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Transcript of Lab_Guide
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HCDA-HNTD
HUAWEI TECHNOLOGIES
Huawei Certification
HCDA-HNTD
Huawei Networking Technology and Device
Lab Guide
Huawei Technologies Co.,Ltd
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HCDA-HNTD
HUAWEI TECHNOLOGIES
Copyright Huawei Technologies Co., Ltd. 2010. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei
Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei
Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The information in this document is subject to change without notice.
Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of
any kind, express or implied.
Huawei Certification
HCDA-HNTD Huawei Networking Technology and Device
Lab Guide
Jan 2012 v1.5
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HCDA-HNTD
HUAWEI TECHNOLOGIES
Huawei Certification System
Relaying on its strong technical and professional training system, according to different customers at different levels of ICT technology, Huawei certification is committed to provide customs with authentic,
professional certification.
Based on characteristics of ICT technologies and customersneeds at different levels, Huawei certification provides customers with
certification system of four levels.
HCDA (Huawei Certification Datacom Associate) is primary for IP network maintenance engineers, and any others who want to learn the IP
network knowledge. HCDA certification covers the TCP/IP basics, routing, switching and other common foundational knowledge of IP networks, together with Huawei communications products, versatile routing
platform VRP characteristics and basic maintenance.
HCDP (Huawei Certification Datacom Professional-Enterprise) is aimed at enterprise-class network maintenance engineers, network
design engineers, and any others who want to in depth grasp routing, switching, network adjustment and optimization technologies. HCDP-Enterprise is consist of IESN (Implement Enterprise Switch
Network), IERN (Implement Enterprise Routing Network), and IENP (Improving Enterprise Network performance), which includes advanced IPv4 routing and switching technology principle, IP technology of
network security, high availability and Qos, as well as the implementation in Huawei products.
HCIE (Huawei Certified Internetwork Expert) is designed to endue
engineers with a variety of IP network technology and proficiency in maintenance, diagnostics and troubleshooting of Huawei products, which equips the engineers with competence in planning, design and
optimization of large-scale IP network.
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HCDA-HNTD
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Referenced icon
Router L3 Switch L2 Switch Firewall Net cloud
Ethernet line Serial line
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HCDA-HNTD
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Lab environment specification
The Lab environment is suggested below:
Identifier Device OS version
R1 AR 2220 Version 5.90 ( V200R001C01SPC300)
R2 AR 2220 Version 5.90 ( V200R001C01SPC300)
R3 AR 2220 Version 5.90 ( V200R001C01SPC300)
S1 S5700-28C-EI-24S Version 5.70 (V100R006C00SPC800)
S2 S5700-28C-EI-24S Version 5.70 (V100R006C00SPC800)
S3 S3700-28TP-EI-AC Version 5.70 (V100R006C00SPC800)
S4 S3700-28TP-EI-AC Version 5.70 (V100R006C00SPC800)
FW Eudemon 200E-X2 Version 5.30 (V100R005C00SPC100)
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HCDA-HNTD
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CONTENTS
Chapter 1 Basic Operations on the VRP Platform ............................................................................................... 1
Lab 1-1 Basic Operations on the VRP Platform ............................................................................................... 1
Chapter 2 Configuring Static Routes and Default Routes .................................................................................. 23
Lab 2-1 Configuring Static Routes and Default Routes .................................................................................. 23
Chapter 3 RIP Configuration ............................................................................................................................. 41
Lab 3-1 Configuring RIPv1 and RIPv2 ............................................................................................................ 41
Lab 3-2 RIPv2 Route Aggregation and Authentication .................................................................................. 58
Chapter 4 OSPF Configuration .......................................................................................................................... 74
Lab 4-1 OSPF Single-area Configuration ....................................................................................................... 74
Lab 4-2 OSPF Multi-area and Authentication Configuration ......................................................................... 89
Chapter 5 RIP and OSPF Route Import ............................................................................................................ 103
Lab 5-1 RIP and OSPF Route Import ........................................................................................................... 103
Chapter 6 Ethernet and STP ........................................................................................................................... 114
Lab 6-1 Ethernet Interface and Link Configuration ..................................................................................... 114
Lab 6-2 STP Configuration .......................................................................................................................... 122
Lab 6-3 VLAN Configuration ....................................................................................................................... 134
Chapter 7 Layer3 Configuration and VRRP ...................................................................................................... 146
Lab 7-1 Configuring Layer 3 Switching ........................................................................................................ 146
Lab 7-2 Configuring the VRRP .................................................................................................................... 160
Chapter 8 WAN Configuration ........................................................................................................................ 176
Lab 8-1 HDLC and PPP Configuration.......................................................................................................... 176
Lab 8-2 FR Configuration (Back to Back) ..................................................................................................... 192
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Lab 8-3 FR Configuration (Using FR Switch) ................................................................................................ 213
Chapter 9 Firewall Configuration .................................................................................................................... 230
Lab 9-1 Eudemon Firewall Configuration ................................................................................................... 230
Lab 9-2 Packet Filtering Configuration ....................................................................................................... 245
Lab 9-3 Eudemon Firewall Zone Configuration ........................................................................................... 260
Lab 9-4 NAT Configuration on the Eudemon Firewall ................................................................................. 277
Chapter 10 Comprehensive Exercise .............................................................................................................. 290
Lab 10-1 Comprehensive Exercise .............................................................................................................. 290
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HCDA-HNTD Chapter 1 Basic Operations on the VRP Platform
HC Series HUAWEI TECHNOLOGIES 1
Chapter 1 Basic Operations on the VRP Platform
Lab 1-1 Basic Operations on the VRP Platform
Learning Objectives
The objectives of this lab are to learn and understand how to perform the following operations:
Configure the connection from a personal computer (PC) to a
router using the Windows built-in terminal software.
Configure a device name, time, and time zone.
Configure the value for Console port idle timeout.
Configure the login information.
Configure the login password and super password.
Save and delete a configuration file.
Configure IP addresses for router interfaces.
Test the connectivity between two routers that are connected
directly.
Control a router after using Telnet to another router.
Copy configuration files from one router to another using File
Transfer Protocol (FTP).
Restart a router.
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Topology
Figure 1.1 Lab topology of the basic operations on the VRP platform
Scenario
A company purchases two AR G3 routers. You need to commission the two AR G3 routers before using them. Items to be commissioned include configuration modes, device names, time, passwords, file
management, and restart operations.
Tasks
Step 1 Connect devices.
This step describes how to connect to a router using the Windows XP
built-in HyperTerminal.
Connect a PC to a router using a console cable. Run a terminal emulation program such as Windows XP HyperTerminal on the PC to create a
connection, as shown in Figure 3.1. The name and icon provided in the figure are only examples.Creating a connection
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HCDA-HNTD Chapter 1 Basic Operations on the VRP Platform
HC Series HUAWEI TECHNOLOGIES 3
Select a COM port.Selecting a COM port
If the PC has multiple COM ports, select a proper one. The serial port of a PC is usually COM1.Setting port communication parameters
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In the COM1 Properties dialog box, click Restore Defaults to retain the default settings. Click OK.
Turn on the power switch to start the router. If the preceding parameters
are set properly, the terminal window displays the startup information until the startup process is complete, and the system asks you to press
Enter. If the command prompt, such as , is displayed on the user interface, you have successfully entered the user view configuration environment.
Step 2 View the system information.
Run the display version command to view the software version and hardware information for the system.
display version
Huawei Versatile Routing Platform Software
VRP (R) software, Version 5.90 (AR2200 V200R001C01SPC300)
Copyright (C) 2011 HUAWEI TECH CO., LTD
Huawei AR2220 Router uptime is 0 week, 0 day, 0 hour, 2 minutes
BKP 0 version information:
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......output omit......
The command output includes the VRP operating system version, device model, and startup time.
Step 3 Change the system time parameter.
The system automatically saves the time. If the time is incorrect, run the clock datetime command in the user view to change the system time.
clock datetime 12:00:00 2011-09-15
Run the display clock command to check that the new system time has
taken effect.
display clock
2011-09-15 12:00:21
Thursday
Time Zone(Default Zone Name) : UTC+00:00
Step 4 Use the question mark (?) or press Tab to enter
commands.
The question mark (?) is a wildcard, and the Tab is used as a shortcut to
enter commands.
display ?
aaa AAA
access-user User access
accounting-scheme Accounting scheme
acl acl command group
adp-ipv4 Ipv4 information
adp-mpls Adp-mpls module
anti-attack Specify anti-attack configurations
arp arp command group
arp-limit Display the number of limitation
atm ATM status and configuration information
authentication-scheme Authentication scheme
authorization-scheme Display AAA authorization scheme
If you want to display all the commands that start with a specific letter or string of letters, enter the desired letters and the question mark (?). The
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system displays all the commands that start with the letters you enter.
For example, if you enter dis?, the system displays all the commands that start with dis.
Make sure that there is a space between the string and the question mark (?). The system identifies the command corresponding to the string and displays the parameters of the command. For example, if you enter
dis ? and only the display command starts with dis, the system displays the parameters of the display command. If multiple commands start with dis, the system displays an error.
You can also press Tab to complete a command. For example, if you enter dis and press Tab, the system completes the display command. If multiple commands start with dis, you can select the appropriate one.
If there are no other commands start with the same letters, you can type dis or disp to indicate display, and int or inter to indicate interface.
Step 5 Access the system view.
Run the system-view command to access the system view where you configure interfaces and protocols.
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]
Step 6 Change device names.
To more easily identify devices, set device names during the device configuration. Change device names based on the lab topology, as shown below:
Change the name of the R1 router to R1.
[Huawei]sysname R1
[R1]
Change the name of the R2 router to R2.
[Huawei]sysname R2
[R2]
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Step 7 Configure the login information.
Configure the login information to indicate the login result.
[R1]header shell information "Welcome to Huawei certification lab"
Run the preceding command to configure the login information. To
check whether the login information has been changed, quit out of the router command line interface, and log back in to view the login information.
[R1]quit
quit
Configuration console exit, please retry to log on
Password:
Welcome to Huawei certification lab
Note: Login information usually provides warnings of illegal logins. Do not use words that are welcoming.
Step 8 Configure the login authentication mode and
timeout interval of the console port.
The console port by default does not have a login password. Therefore, users can log in to the device without passwords.
This presents a serious risk to the device. You need to change the login
mode of the console port to the password authentication mode. The password in the password authentication mode is huawei in plain text.
If there is no activity on the console port for the period of time specified
by the timeout interval, the system automatically exits. When this occurs, you need to log in to the system again using the password.
The default timeout interval is 10 minutes. If 10 minutes are not a
reasonable amount of time for the timeout interval, change the timeout interval to 20 minutes.
[R1]user-interface console 0
[R1-ui-console0]authentication-mode password
[R1-ui-console0]set authentication password simple huawei
[R1-ui-console0]idle-timeout 20 0
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Run the display this command to check the configuration results.
[R1-ui-console0]display this
[V200R001C01SPC300]
#
user-interface con 0
authentication-mode password
set authentication password simple huawei
idle-timeout 20 0
Log out of the system and log back in to verify that you need to enter the password.
[R1-ui-console0]return
quit
Configuration console exit, please retry to log on
Password:
Welcome to Huawei certification lab
Step 9 Configure IP addresses and descriptions for the
interfaces.
Configure an IP address for the S1/0/0 interface of R1. The IP address can use the subnet mask length or use a complete subnet mask, such as 24
or 255.255.255.0.
[R1]interface Serial 1/0/0
[R1-Serial1/0/0]ip address 10.0.12.1 24
[R1-Serial1/0/0]description This interface connects to R2-S1/0/0
Run the display this command to check the configuration results.
[R1-Serial1/0/0]display this
[V200R001C01SPC300]
#
interface Serial1/0/0
link-protocol ppp
description This interface connect to R2-S1/0/0
ip address 10.0.12.1 255.255.255.0
#
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Return
Run the display interface command to view the interface description.
[R1-Serial1/0/0]display interface Serial2/0/0
Serial1/0/0 current state : UP
Line protocol current state : UP
Last line protocol up time : 2011-09-15 17:38:48
Description:This interface connect to R2-S1/0/0
Route Port,The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Internet Address is 10.0.12.1/24
Link layer protocol is PPP
LCP opened, IPCP stopped
Last physical up time : 2011-09-16 17:38:45
Last physical down time : 2011-09-16 17:38:34
Current system time: 2011-09-16 17:42:58
Physical layer is synchronous, Baudrate is 64000 bps
Interface is DCE, Cable type is V35, Clock mode is DCECLK
Last 300 seconds input rate 2 bytes/sec 16 bits/sec 0 packets/sec
Last 300 seconds output rate 2 bytes/sec 16 bits/sec 0 packets/sec
Input: 212 packets, 2944 bytes
broadcasts: 0, multicasts: 0
errors: 0, runts: 0, giants: 0
CRC: 0, align errors: 0, overruns: 0
dribbles: 0, aborts: 0, no buffers: 0
frame errors: 0
Output: 216 packets, 2700 bytes
errors: 0, underruns: 0, collisions: 0
deferred: 0
DCD=UP DTR=UP DSR=UP RTS=UP CTS=UP
Input bandwidth utilization : 0.13%
Output bandwidth utilization : 0.13%
[R1-Serial1/0/0]
The command output shows that the physical status and protocol status of the interface are UP, and the corresponding physical layer and data
link layer are functional.
The interface link cables are V.35 DCE.
Once you have verified the status, configure the IP address and
description for the interface of R2.
[R2]interface Serial 1/0/0
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[R2-Serial1/0/0]ip address 10.0.12.2 255.255.255.0
[R2-Serial1/0/0]description This interface connect to R1-S2/0/0
[R2-Serial1/0/0]
After completing the configuration, run the ping command to test the connection between R1 and R2.
[R1]ping 10.0.12.2
PING 10.0.12.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.12.2: bytes=56 Sequence=1 ttl=255 time=35 ms
Reply from 10.0.12.2: bytes=56 Sequence=2 ttl=255 time=32 ms
Reply from 10.0.12.2: bytes=56 Sequence=3 ttl=255 time=32 ms
Reply from 10.0.12.2: bytes=56 Sequence=4 ttl=255 time=32 ms
Reply from 10.0.12.2: bytes=56 Sequence=5 ttl=255 time=32 ms
--- 10.0.12.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 32/32/35 ms
Step 10 Configure the telnet login mode.
Set the telnet login mode of R1 to password authentication mode, password to huawei, and user privilege level to 3.
[R1]user-interface vty 0 4
[R1-ui-vty0-4]authentication-mode password
[R1-ui-vty0-4]set authentication password simple huawei
[R1-ui-vty0-4]user privilege level 3
Run the display this command to check the configuration results.
[R1-ui-vty0-4]display this
[V200R001C01SPC300]
#
user-interface con 0
authentication-mode password
set authentication password simple huawei
idle-timeout 20 0
user-interface vty 0 4
user privilege level 3
set authentication password simple huawei
user-interface vty 16 20
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HC Series HUAWEI TECHNOLOGIES 11
#
Return
Set the telnet login mode of R2 to user name and password authentication mode.
[R2]user-interface vty 0 4
[R2-ui-vty0-4]authentication-mode aaa
[R2-ui-vty0-4]quit
Note: You can run the quit command to return to the previous view or
the return command to return to the user view.
[R2]aaa
[R2-aaa]local-user huawei password simple huawei
[R2-aaa]local-user huawei privilege level 15
[R2-aaa]local-user huawei service-type telnet
Run the display this command to check the configuration results.
[R2-aaa]display this
[V200R001C01SPC300]
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http
local-user huawei password simple huawei
local-user huawei privilege level 15
local-user huawei service-type telnet
#
Return
Telnet to R2 from R1.
telnet 10.0.12.2
Press CTRL_] to quit telnet mode
Trying 10.0.12.2 ...
Connected to 10.0.12.2 ...
Login authentication
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Username:huawei
Password:
----------------------------------------------------------------------------
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User last login information:
----------------------------------------------------------------------------
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Access Type: Telnet
IP-Address : 10.0.12.1
Time : 2011-09-14 13:19:59+00:00
----------------------------------------------------------------------------
-
Based on the output above, the login is successful.
Telnet to R1 from R2.
telnet 10.0.12.1
Press CTRL_] to quit telnet mode
Trying 10.0.12.1 ...
Connected to 10.0.12.1 ...
Login authentication
Password:
Welcome to Huawei certification lab
Based on the output above, the login is successful.
Step 11 Configure a super password for the device.
When there are low user rights, for example, the value of user privilege
level is 0 or 1 for the telnet login, you can use the super command to
increase the user rights. To minimize risks caused by illegal right elevations, set super passwords.
Set a super password for R1. The super password is stored in simple
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HC Series HUAWEI TECHNOLOGIES 13
(plain text) mode.
[R1]super password simple Huawei
Run the display current-configuration command to check the configuration results.
[R1]display current-configuration
......output omit......
#
super password level 3 simple huawei
user-interface con 0
authentication-mode password
......output omit......
As shown in the command output, the super password is stored in plain text, which is relatively unsecure and unsafe.
Set a super password for R2. The super password is stored in cipher
(cipher text) mode.
[R2]super password cipher huawei
[R1]display current-configuration
......output omit......
#
super password level 3 cipher Q;L]@C0S3[%;LEEP8+INFQ!!
user-interface con 0
authentication-mode password
......output omit......
As shown in the command output, the super password is stored in cipher text, which is more secure and safe.
Step 12 View the file list stored on the current device.
Run the dir command in the user view to display the list of files in the current directory.
dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 14 2011 11:50:24 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:17:58 ar2220_V200R001C01SPC300.cc
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1,927,476 KB total (1,856,548 KB free)
dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 14 2011 11:50:58 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:19:02 ar2220_V200R001C01SPC300.cc
1,927,476 KB total (1,855,076 KB free)
Step 13 Upload and download files between R1 and R2
using FTP.
Routers are considered as FTP clients by default. In this lab, R1 is considered as an FTP client, and R2 is considered as an FTP server.
Enable the FTP server function on R2.
[R2]ftp server enable
Info: Succeeded in starting the FTP server
[R2]set default ftp-directory sd1:/
Create a local account ftpuser as the FTP login account on R2.
[R2]aaa
[R2-aaa]local-user ftpuser password cipher huawei
[R2-aaa]local-user ftpuser service-type ftp
[R2-aaa]local-user ftpuser privilege level 15
Log in to R2 from R1 using FTP.
ftp 10.0.12.2
Trying 10.0.12.2 ...
Press CTRL+K to abort
Connected to 10.0.12.2.
220 FTP service ready.
User(10.0.12.2:(none)):ftpuser
331 Password required for ftpuser.
Enter password:
230 User logged in.
[R1-ftp]
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If the [R1-ftp] prompt is displayed, you have successfully logged in to
the R2 FTP server.
Transfer a file from R1 to the R2 FTP server using FTP.
[R1-ftp]put hq-r.cfg file-from-R1.bak
200 Port command okay.
150 Opening ASCII mode data connection for file-from-R1.bak.
226 Transfer complete.
FTP: 0 byte(s) sent in 0.627 second(s) 0.00byte(s)/sec.
[R1-ftp]
Note: The source file names on the lab device may be different. You need to use the actual file name. Run the dir command in the R1 user view to
check the file names in the file list.
Run the dir command to view the result of the transfer.
[R1-ftp]dir
200 Port command okay.
150 Opening ASCII mode data connection for *.
-rwxrwxrwx 1 noone nogroup 1738816 Sep 14 11:50 web.zip
-rwxrwxrwx 1 noone nogroup 68288896 Jul 12 14:19
ar2220_V200R001C01SPC300.cc
-rwxrwxrwx 1 noone nogroup 0 Sep 14 14:10 file-from-r1.bak
226 Transfer complete.
FTP: 551 byte(s) received in 0.619 second(s) 890.14byte(s)/sec.
The command output lists files on the R2 FTP server.
Download the file-from-r1.bak file from the R2 FTP server to R1 and
change the file name to file-from-r2.bak.
[R1-ftp]get file-from-r1.bak file-from-r2.bak
200 Port command okay.
150 Opening ASCII mode data connection for file-from-r1.bak.
226 Transfer complete.
FTP: 0 byte(s) received in 0.591 second(s) 0.00byte(s)/sec.
Exit from the R2 FTP server and check the file list on R1. Make sure that the file-from-r2.bak file has been downloaded successfully.
[R1-ftp]quit
221 Server closing.
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dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 16 2011 18:44:54 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:17:58 ar2220_V200R001C01SPC300.cc
2 -rw- 0 Sep 16 2011 19:13:00 file-from-r2.bak
1,927,476 KB total (1,856,548 KB free)
Delete the files on the devices.
Warning: Delete only the two lab files file-from-r1.bak and
file-from-r2.bak. Do not delete other files; otherwise, the devices
may fail to boot.
Delete the file-from-r1.bak file from R2.
dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 14 2011 11:50:58 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:19:02 ar2220_V200R001C01SPC300.cc
2 -rw- 0 Sep 14 2011 14:10:08 file-from-r1.bak
1,927,476 KB total (1,855,076 KB free)
delete /unreserved file-from-r1.bak
Warning: The contents of file sd1:/file-from-r1.bak cannot be recycled. Continue?
(y/n)[n]:y
Info: Deleting file sd1:/file-from-r1.bak...succeed.
The /unreserved parameter indicates that the file is to be deleted
permanently and cannot be restored. Use this parameter with caution.
dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 14 2011 11:50:58 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:19:02 ar2220_V200R001C01SPC300.cc
1,927,476 KB total (1,855,076 KB free)
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Compare the file list with the preceding file list and make sure that
the file-from-r1.bak file has been deleted.
Delete the file-from-r2.bak file from R1.
delete /unreserved file-from-r2.bak
Warning: The contents of file sd1:/file-from-r2.bak cannot be recycled. Continue?
(y/n)[n]:y
Info: Deleting file sd1:/file-from-r2.bak...succeed.
dir
Directory of sd1:/
Idx Attr Size(Byte) Date Time(LMT) FileName
0 -rw- 1,738,816 Sep 16 2011 18:44:54 web.zip
1 -rw- 68,288,896 Jul 12 2011 14:17:58 ar2220_V200R001C01SPC300.cc
1,927,476 KB total (1,856,548 KB free)
Step 14 Manage configuration files of a device.
Save the current configuration file.
save
The current configuration will be written to the device.
Are you sure to continue? (y/n)[n]:y
It will take several minutes to save configuration file, please wait............
Configuration file had been saved successfully
Note: The configuration file will take effect after being activated
Run the following command to view the saved configuration
information:
display saved-configuration
[V200R001C01SPC300]
#
sysname R1
header shell information "Welcome to Huawei certification lab"
#
board add 0/1 1SA
board add 0/2 1SA
............
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18 HUAWEI TECHNOLOGIES HC Series
Run the following command to view the current configuration
information:
display current-configuration
[V200R001C01SPC300]
#
sysname R1
header shell information "Welcome to Huawei certification lab"
#
board add 0/1 1SA
board add 0/2 1SA
board add 0/3 2FE
............
A router can store multiple configuration files. You can select the configuration file to be used after the next startup of the router as required.
startup saved-configuration iascfg.zip
This operation will take several minutes, please wait.........
Info: Succeeded in setting the file for booting system
Run the following command to select the configuration file to be used after the next startup:
display startup
MainBoard:
Startup system software: sd1:/ar2220_V200R001C01SPC300.cc
Next startup system software: sd1:/ar2220_V200R001C01SPC300.cc
Backup system software for next startup: null
Startup saved-configuration file: null
Next startup saved-configuration file: sd1:/iascfg.zip
Startup license file: null
Next startup license file: null
Startup patch package: null
Next startup patch package: null
Startup voice-files: null
Next startup voice-files: null
Delete configuration files from the flash memory.
reset saved-configuration
This will delete the configuration in the flash memory.
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HC Series HUAWEI TECHNOLOGIES 19
The device configurations will be erased to reconfigure.
Are you sure? (y/n)[n]:y
Clear the configuration in the device successfully.
Step 15 Restart a router.
Run the reboot command to restart a router.
reboot
Info: The system is now comparing the configuration, please wait.
Warning: All the configuration will be saved to the next startup configuration.
Continue ? [y/n]:n
System will reboot! Continue ? [y/n]:y
Info: system is rebooting ,please wait...
The system asks whether you want to save the current configuration.
Determine whether to save the current configuration based on the requirements for the lab. If you are unsure whether you should save the current confirmation, do not save it.
Additional Exercises: Analyzing and Verifying
1. You can use USB cables to connect to the USB ports of AR G3 routers to perform configuration management. For more information,
see the related product guide.
2. Currently, most laptops do not have COM ports. How do we configure routers without laptop COM ports? List all the methods you have in mind.
Final Configurations
[R1]display current-configuration
[V200R001C01SPC300]
#
sysname R1
tftp client-source -i Serial2/0/0
header shell information "Welcome to Huawei certification lab"
#
board add 0/1 1SA
board add 0/2 1SA
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20 HUAWEI TECHNOLOGIES HC Series
board add 0/3 2FE
#
voice
#
http server enable
#
drop illegal-mac alarm
#
l2tp aging 0
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http
#
interface Ethernet3/0/0
#
interface Ethernet3/0/1
#
interface Serial1/0/0
link-protocol ppp
description This interface connect to R2-S2/0/0
ip address 10.0.12.1 255.255.255.0
#
interface Serial2/0/0
link-protocol ppp
#
interface GigabitEthernet0/0/0
#
interface GigabitEthernet0/0/1
#
interface GigabitEthernet0/0/2
#
interface Cellular0/0/0
link-protocol ppp
#
interface Cellular0/0/1
link-protocol ppp
#
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interface NULL0
#
super password level 3 simple huawei
user-interface con 0
authentication-mode password
set authentication password simple huawei
idle-timeout 10 0
user-interface vty 0 4
user privilege level 3
set authentication password simple huawei
user-interface vty 16 20
#
return
[R2]display current-configuration
[V200R001C01SPC300]
#
sysname R2
ftp server enable
set default ftp-directory sd1:/
#
board add 0/1 1SA
board add 0/2 1SA
board add 0/3 2FE
#
voice
#
http server enable
#
drop illegal-mac alarm
#
l2tp aging 0
#
dhcp enable
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http
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22 HUAWEI TECHNOLOGIES HC Series
local-user ftpuser password cipher N`C55QK
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HC Series HUAWEI TECHNOLOGIES 23
Chapter 2 Configuring Static Routes and Default
Routes
Lab 2-1 Configuring Static Routes and Default Routes
Learning Objectives
The objectives of this lab are to learn and understand:
Advantages of static routes and default routes over dynamic
routes
Routing functions and operation processes
Procedure for configuring a static route with the next hop as an
interface
Procedure for configuring a static route with the next hop as an IP
address
Method of testing connectivity of a static route
Method of implementing interconnection between the distal
network and external network by configuring a default route
Procedure for testing a default route
Procedure for configuring a backup static route on a router with
redundant links
Method of testing a backup static route
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HCDA-HNTD Chapter 2 Configuring Static Routes and Default Routes
24 HUAWEI TECHNOLOGIES HC Series
Topology
Figure 2.1 Lab topology of static routes and default routes
Scenario
Assume that you are a network administrator of a company with a headquarters (HQ) and two branches. R1 is the router in the HQ, and the HQ has a network segment. R2 and R3 are the routers in the two
branches. R1 is connected to R2 and R3 through the Ethernet and serial cables. R2 and R3 are connected through serial cables.
Because the network scale is small, static routes and default routes
are used to implement interworking. For the IP addressing information, see Figure 2.1.
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Tasks
Step 1 Perform basic configurations and configure IP
addresses.
Configure the device names and IP addresses for R1, R2, and R3.
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]interface Serial 1/0/0
[R1-Serial1/0/0]ip address 10.0.12.1 24
[R1-Serial1/0/0]description this port connect to R2-S1/0/0
[R1-Serial1/0/0]quit
[R1]interface GigabitEthernet 0/0/0
[R1- GigabitEthernet 0/0/0]ip address 10.0.13.1 24
[R1- GigabitEthernet 0/0/0]description this port connect to R3-G0/0/0
[R1- GigabitEthernet 0/0/0]interface loopback 0
[R1-LoopBack0]ip address 10.0.1.1 24
[R1-LoopBack0]
Run the display current-configuration command to check the configurations.
[R1-LoopBack0]display current-configuration
......output omit......
#
interface GigabitEthernet 0/0/0
description this port connects to R3-G0/0/0
ip address 10.0.13.1 255.255.255.0
#
interface Ethernet3/0/1
#
interface Serial1/0/0
link-protocol ppp
description this port connects to R2-S1/0/0
ip address 10.0.12.1 255.255.255.0
#
......output omit......
interface LoopBack0
ip address 10.0.1.1 255.255.255.0
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#
......output omit......
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R2
[R2]interface serial 1/0/0
[R2-Serial1/0/0]ip address 10.0.12.2 24
[R2-Serial1/0/0]description this port connect to R1-S1/0/0
[R2-Serial1/0/0]interface serial 2/0/0
[R2-Serial2/0/0]ip address 10.0.23.2 24
[R2-Serial2/0/0]description this port connect to R3-S2/0/0
[R2-Serial2/0/0]interface loopback0
[R2-LoopBack0]ip address 10.0.2.2 24
[R2-LoopBack0]display current-configuration
......output omit......
interface Serial1/0/0
link-protocol ppp
description this port connect to R1-S1/0/0
ip address 10.0.12.2 255.255.255.0
#
interface Serial2/0/0
link-protocol ppp
description this port connect to R3-S1/0/0
ip address 10.0.23.2 255.255.255.0
#
......output omit......
#
interface LoopBack0
ip address 10.0.2.2 255.255.255.0
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R3
[R3]interface Serial 2/0/0
[R3-Serial2/0/0]ip address 10.0.23.3 24
[R3-Serial2/0/0]description this port connects to R2-S2/0/0
[R3-Serial2/0/0]quit
[R3]interface GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]ip address 10.0.13.3 24
[R3-GigabitEthernet0/0/0]description this port connects to R1-G0/0/0
[R3-GigabitEthernet0/0/0]interface loopback 0
[R3-LoopBack0]ip address 10.0.3.3 24
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[R3-LoopBack0]display current-configuration
......output omit......
#
interface Serial1/0/0
link-protocol ppp
description this port connect to R2-S2/0/0
ip address 10.0.23.3 255.255.255.0
#
interface GigabitEthernet0/0/0
description this port connect to R1-G0/0/0
ip address 10.0.13.3 255.255.255.0
#
......output omit......
interface LoopBack0
ip address 10.0.3.3 255.255.255.0
#
......output omit......
Run the ping command to test network connectivity.
ping 10.0.12.2
PING 10.0.12.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.12.2: bytes=56 Sequence=1 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=2 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=3 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=4 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=5 ttl=255 time=30 ms
--- 10.0.12.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/30/30 ms
ping 10.0.13.3
PING 10.0.13.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.13.3: bytes=56 Sequence=1 ttl=255 time=6 ms
Reply from 10.0.13.3: bytes=56 Sequence=2 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=3 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=4 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=5 ttl=255 time=2 ms
--- 10.0.13.3 ping statistics ---
5 packet(s) transmitted
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28 HUAWEI TECHNOLOGIES HC Series
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 2/2/6 ms
ping 10.0.23.3
PING 10.0.23.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=2 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=3 ttl=255 time=41 ms
Reply from 10.0.23.3: bytes=56 Sequence=4 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=5 ttl=255 time=41 ms
--- 10.0.23.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/35/41 ms
Step 2 Test connectivity from R2 to 10.0.13.0/24 and
10.0.3.0/24.
[R2]ping 10.0.13.3
PING 10.0.13.3: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
Request time out
--- 10.0.13.3 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
[R2]ping 10.0.3.3
PING 10.0.3.3: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
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Request time out
--- 10.0.3.3 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
Note: If R2 needs to communicate with the network segment 10.0.3.0, the routes destined for this network segment must be configured on R2, and the routes destined for the R2 interface must be configured on R3.
The preceding test result shows that R2 cannot communicate with 10.0.3.3 and 10.0.13.3.
Run the display ip routing-table command to view the routing table
of R2. The routing table does not contain the routes of the two networks.
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 15 Routes : 15
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0
10.0.23.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0
10.0.23.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
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Step 3 Configure static routes on R2.
Configure a static route for destination networks 10.0.13.0/24 and 10.0.3.0/24, with the next hop as R3 interface's IP address 10.0.23.3 ,
preference of 60 is the default and not needed to be set. Also in the example the preference is not set.
system-view
Enter system view, return user view with Ctrl+Z.
[R2]ip route-static 10.0.13.0 24 10.0.23.3
[R2]ip route-static 10.0.3.0 24 10.0.23.3
Note: In the ip route-static command, 24 indicates the subnet mask
length, which can also be expressed in 255.255.255.0.
Step 4 Configure backup static routes.
The data exchanged between R2 and 10.0.13.3 and 10.0.3.3 is
transmitted through the link between R2 and R3. R2 fails to communicate with 10.0.13.3 and 10.0.3.3 if the link between R2 and R3 is faulty.
According to the topology, R2 can communicate with R3 through R1 after the link between R2 and R3 is faulty. You can configure a backup static route to solve the preceding problem. Backup static routes do not
take effect in normal cases. If the link between R2 and R3 is faulty, backup static routes are used to transfer data.
You must configure preferences for backup static routes to ensure
that the backup static routes are used only when the primary link is faulty. In this example, the preference of the backup static route is set to 80.
[R1]ip route-static 10.0.3.0 24 10.0.13.3
[R2]ip route-static 10.0.13.0 255.255.255.0 Serial 1/0/0 preference 80
[R2]ip route-static 10.0.3.0 24 Serial 1/0/0 preference 80
[R3]ip route-static 10.0.12.0 24 10.0.13.1
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Step 5 Test the static routes.
View the routing table of R2.
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 17 Routes : 17
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.3.0/24 Static 60 0 RD 10.0.23.3 Serial2/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.13.0/24 Static 60 0 RD 10.0.23.3 Serial2/0/0
10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0
10.0.23.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0
10.0.23.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
The routing table contains two static routes that are configured in
step 3. The value of the Proto field is Static, indicating a static route. The value of the Pre field is 60, indicating the default preference of a route.
Test network connectivity when the link between R2 and R3 works
properly.
[R2]ping 10.0.13.3
PING 10.0.13.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.13.3: bytes=56 Sequence=1 ttl=255 time=34 ms
Reply from 10.0.13.3: bytes=56 Sequence=2 ttl=255 time=34 ms
Reply from 10.0.13.3: bytes=56 Sequence=3 ttl=255 time=34 ms
Reply from 10.0.13.3: bytes=56 Sequence=4 ttl=255 time=34 ms
Reply from 10.0.13.3: bytes=56 Sequence=5 ttl=255 time=34 ms
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--- 10.0.13.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 34/34/34 ms
ping 10.0.3.3
PING 10.0.3.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.3.3: bytes=56 Sequence=1 ttl=255 time=41 ms
Reply from 10.0.3.3: bytes=56 Sequence=2 ttl=255 time=41 ms
Reply from 10.0.3.3: bytes=56 Sequence=3 ttl=255 time=41 ms
Reply from 10.0.3.3: bytes=56 Sequence=4 ttl=255 time=41 ms
Reply from 10.0.3.3: bytes=56 Sequence=5 ttl=255 time=41 ms
--- 10.0.3.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 41/41/41 ms
The command output shows that communication is normal.
You can also run the tracert command to view the routers through which data is transferred.
tracert 10.0.13.3
traceroute to 10.0.13.3(10.0.13.3), max hops: 30 ,packet length: 40,
press CTRL_C to break
1 10.0.23.3 40 ms 31 ms 30 ms
tracert 10.0.3.3
traceroute to 10.0.3.3(10.0.3.3), max hops: 30 ,packet length: 40,
press CTRL_C to break
1 10.0.23.3 40 ms 30 ms 30 ms
The command output shows that R2 directly sends data to R3.
Step 6 Test the backup static routes.
Disable Serial2/0/0 on R2 and observe the changes in the routing
tables.
Compare the routing tables with the previous routing tables before
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HC Series HUAWEI TECHNOLOGIES 33
Serial2/0/0 was disabled.
[R2]int Serial 2/0/0
[R2-Serial2/0/0]shutdown
[R2-Serial2/0/0]quit
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 13 Routes : 13
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.3.0/24 Static 80 0 D 10.0.12.2 Serial1/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.13.0/24 Static 80 0 D 10.0.12.2 Serial1/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
The next hops and preferences of the two routes in the preceding information are changed.
Test connectivity between R2 and the destination addresses 10.0.13.3 and 10.0.3.3 on R2.
ping 10.0.3.3
PING 10.0.3.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.3.3: bytes=56 Sequence=1 ttl=255 time=3 ms
Reply from 10.0.3.3: bytes=56 Sequence=2 ttl=255 time=2 ms
Reply from 10.0.3.3: bytes=56 Sequence=3 ttl=255 time=2 ms
Reply from 10.0.3.3: bytes=56 Sequence=4 ttl=255 time=2 ms
Reply from 10.0.3.3: bytes=56 Sequence=5 ttl=255 time=2 ms
--- 10.0.3.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
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34 HUAWEI TECHNOLOGIES HC Series
0.00% packet loss
round-trip min/avg/max = 2/2/3 ms
ping 10.0.13.3
PING 10.0.13.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.13.3: bytes=56 Sequence=1 ttl=255 time=3 ms
Reply from 10.0.13.3: bytes=56 Sequence=2 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=3 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=4 ttl=255 time=2 ms
Reply from 10.0.13.3: bytes=56 Sequence=5 ttl=255 time=2 ms
--- 10.0.13.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 2/2/3 ms
The network is not disconnected when the link between R2 and R3 is shut down.
You can also run the tracert command to view the routers through
which data is transferred.
tracert 10.0.13.3
traceroute to 10.0.13.3(10.0.13.3), max hops: 30 ,packet length: 40,press CTRL_C
to break
1 10.0.12.1 40 ms 21 ms 21 ms
2 10.0.13.3 30 ms 21 ms 21 ms
tracert 10.0.3.3
traceroute to 10.0.3.3(10.0.3.3), max hops: 30 ,packet length: 40,press CTRL_C
to break
1 10.0.12.1 40 ms 21 ms 21 ms
2 10.0.13.3 30 ms 21 ms 21 ms
The command output shows that the data sent by R2 reaches R3 through R1.
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HC Series HUAWEI TECHNOLOGIES 35
Step 7 Configure a default route on R1 to implement
network connectivity.
Enable the interface that was disabled in step 6 on R2.
[R2]int Serial 2/0/0
[R2-Serial2/0/0]undo shutdown
Test connectivity between R1 and R3.
[R1]ping 10.0.23.3
PING 10.0.23.3: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
Request time out
--- 10.0.23.3 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
R3 cannot be pinged because the route destined for 10.0.23.3 is not configured on R1.
You can configure a default route on R1 to implement network
connectivity.
[R1]ip route-static 0.0.0.0 0.0.0.0 10.0.13.3
After the configuration is complete, test connectivity between R1 and 10.0.23.3.
[R1]ping 10.0.23.3
PING 10.0.23.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=255 time=3 ms
Reply from 10.0.23.3: bytes=56 Sequence=2 ttl=255 time=2 ms
Reply from 10.0.23.3: bytes=56 Sequence=3 ttl=255 time=2 ms
Reply from 10.0.23.3: bytes=56 Sequence=4 ttl=255 time=2 ms
Reply from 10.0.23.3: bytes=56 Sequence=5 ttl=255 time=2 ms
--- 10.0.23.3 ping statistics ---
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5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 2/2/3 ms
Step 8 Configure a backup default route.
If the link between R1 and R3 is faulty, R1 can communicate with
10.0.23.3 and 10.0.3.3 through R2.
However, R1 does not learn about this route by default. You can also configure a backup default route in this step.
[R1]ip route-static 0.0.0.0 0.0.0.0 10.0.12.2 preference 80
[R3]ip route-static 10.0.12.0 24 10.0.23.2 preference 80
Step 9 Test the backup default route.
View the routes of R1 when the link between R1 and R3 works properly.
display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 16 Routes : 16
Destination/Mask Proto Pre Cost Flags NextHop Interface
0.0.0.0/0 Static 60 0 RD 10.0.13.3 GigabitEthernet0/0/0
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.3.0/24 Static 80 0 RD 10.0.13.3 GigabitEthernet0/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.2/32 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.13.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
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127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
Disable GigabitEthernet0/0/0 on R1, and then view the routes of R1. Compare the current routes with the routes before GigabitEthernet0/0/0 was disabled.
[R1]interface GigabitEthernet0/0/0
[R1-GigabitEthernet0/0/0]shutdown
[R1-GigabitEthernet0/0/0]quit
[R1]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 12 Routes : 12
Destination/Mask Proto Pre Cost Flags NextHop Interface
0.0.0.0/0 Static 80 0 RD 10.0.12.2 Serial1/0/0
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.0/24 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.2/32 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
According to the preceding routing table, the value of 80 in the Pre column indicates that backup default route 0.0.0.0 is valid.
Test network connectivity on R1.
[R1]ping 10.0.23.3
PING 10.0.23.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=254 time=76 ms
Reply from 10.0.23.3: bytes=56 Sequence=2 ttl=254 time=250 ms
Reply from 10.0.23.3: bytes=56 Sequence=3 ttl=254 time=76 ms
Reply from 10.0.23.3: bytes=56 Sequence=4 ttl=254 time=76 ms
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Reply from 10.0.23.3: bytes=56 Sequence=5 ttl=254 time=76 ms
--- 10.0.23.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 76/110/250 ms
[R1]tracert 10.0.23.3
traceroute to 10.0.23.3(10.0.23.2), max hops: 30 ,packet length: 40,press CTRL_C
to break
1 10.0.12.2 30 ms 26 ms 26 ms
2 10.0.23.3 60 ms 53 ms 56 ms
The data packets reach R3 through R2.
Additional Exercises: Analyzing and Verifying
You can run the ping command to control other information about forwarded data packets, such as the source address, data packet size,
and data packet quantity. Consider the following questions:
1. What is the source address of the ping data packets sent from a router by default?
2. In this lab, is connectivity implemented for all the network segments?
3. What is the simplest static route configuration for this lab topology
if only static route are configured to implement connectivity?
4. You can specify the next hop address or an interface when configuring a static route. Consider the differences between the two
configurations. How do non-Huawei vendors configure static routes?
Appendix A: Default Preference of Each Routing Protocol
of Huawei Routers
Routing Protocol and Routing Type Preference
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HC Series HUAWEI TECHNOLOGIES 39
Direct 0
OSPF 10
IS-IS 15
Static 60
RIP 100
OSPF ASE 150
BGP 255
Final Configurations
display current-configuration
[V200R001C01SPC300]
#
sysname R1
#
interface Serial1/0/0
link-protocol ppp
description this port connect to R2-S1/0/0
ip address 10.0.12.1 255.255.255.0
#
interface GigabitEthernet0/0/0
description this port connect to R3-G0/0/0
ip address 10.0.13.1 255.255.255.0
#
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
#
ip route-static 0.0.0.0 0.0.0.0 10.0.13.2
ip route-static 0.0.0.0 0.0.0.0 10.0.12.2 preference 80
ip route-static 3.3.3.3 255.255.255.255 10.0.13.2 preference 80
#
return
display current-configuration
[V200R001C01SPC300]
#
sysname R2
#
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interface Serial1/0/0
link-protocol ppp
description this port connect to R1-S1/0/0
ip address 10.0.12.2 255.255.255.0
#
interface Serial2/0/0
link-protocol ppp
description this port connect to R3-S1/0/0
ip address 10.0.23.1 255.255.255.0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
ip route-static 3.3.3.3 255.255.255.255 10.0.23.2
ip route-static 3.3.3.3 255.255.255.255 Serial1/0/0 preference 80
ip route-static 10.0.13.0 255.255.255.0 10.0.23.2
ip route-static 10.0.13.0 255.255.255.0 Serial1/0/0 preference 80
#
return
display current-configuration
[V200R001C01SPC300]
#
sysname R3
#
interface Serial2/0/0
link-protocol ppp
description this port connect to R2-S2/0/0
ip address 10.0.23.2 255.255.255.0
#
interface GigabitEthernet0/0/0
description this port connect to R1-G0/0/0
ip address 10.0.13.2 255.255.255.0
#
interface LoopBack0
ip address3.3.3.3 255.255.255.255
#
ip route-static 10.0.12.0 255.255.255.0 10.0.13.1 preference 80
ip route-static 10.0.12.0 255.255.255.0 10.0.23.1 preference 80
#
return
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Chapter 3 RIP Configuration
Lab 3-1 Configuring RIPv1 and RIPv2
Learning Objectives
The objectives of this lab are to learn and understand:
Loop prevention mechanism of the Routing Information Protocol
(RIP)
Method of using RIP to exchange routing information between
two routers
Method of configuring RIPv1
Method of enabling RIP on a specified network and interface
Method of using the display and debug commands to test RIP
Procedure for testing connectivity of the RIP network
Formats of the network prefixes sent to or received by RIP
Method of configuring RIPv2
Differences between RIPv1 and RIPv2
Method of importing a static route to RIP
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42 HUAWEI TECHNOLOGIES HC Series
Topology
Figure 3.1 Lab topology of RIPv1 and RIPv2
Scenario
Assume that you are a network administrator of a company that has a small intranet with three routers and five networks. You want to use RIP to transfer routing information. Considering compatibility, you want to
use RIPv1 at first, but you realize that RIPv2 also has many advantages. After certain tests, you finally select RIPv2.
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Tasks
Step 1 Perform basic configurations and IP addressing.
Configure basic device information and set IP addresses based on the topology.
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]interface Serial 1/0/0
[R1-Serial1/0/0]ip address 10.0.12.1 24
[R1-Serial1/0/0]description this port connect to R2-S1/0/0
[R1- Serial1/0/0]interface loopback 0
[R1-LoopBack0]ip address 10.0.1.1 24
[R1-LoopBack0]quit
Run the display current-configuration command to check the configuration results.
[R1-LoopBack0]display current-configuration
......output omit......
#
interface Serial1/0/0
link-protocol ppp
description this port connect to R2-S1/0/0
ip address 10.0.12.1 255.255.255.0
#
......output omit......
interface LoopBack0
ip address 10.0.1.1 255.255.255.0
#
......output omit......
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R2
[R2]interface serial 1/0/0
[R2-Serial1/0/0]ip address 10.0.12.2 24
[R2-Serial1/0/0]description this port connect to R1-S1/0/0
[R2-Serial1/0/0]interface serial 2/0/0
[R2-Serial2/0/0]ip address 10.0.23.2 24
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[R2-Serial2/0/0]description this port connect to R3-S1/0/0
[R2-Serial2/0/0]interface loopback0
[R2-LoopBack0]ip address 10.0.2.2 24
[R2-LoopBack0]display current-configuration
......output omit......
#
interface Serial1/0/0
link-protocol ppp
description this port connect to R1-S1/0/0
ip address 10.0.12.2 255.255.255.0
#
interface Serial2/0/0
link-protocol ppp
description this port connect to R3-S1/0/0
ip address 10.0.23.2 255.255.255.0
#
......output omit......
#
interface LoopBack0
ip address 10.0.2.2 255.255.255.0
#
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R3
[R3]interface Serial 1/0/0
[R3-Serial1/0/0]ip address 10.0.23.3 24
[R3-Serial1/0/0]description this port connect to R2-S2/0/0
[R3- Serial1/0/0]interface loop0
[R3-LoopBack0]ip address 10.0.3.3 24
[R3-LoopBack0]display current-configuration
......output omit......
#
interface Serial1/0/0
link-protocol ppp
description this port connect to R2-S2/0/0
ip address 10.0.23.3 255.255.255.0
#
......output omit......
interface LoopBack0
ip address 10.0.3.3 255.255.255.0
#
......output omit......
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R1 and R2 can communicate with each other.
ping 10.0.12.2
PING 10.0.12.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.12.2: bytes=56 Sequence=1 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=2 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=3 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=4 ttl=255 time=30 ms
Reply from 10.0.12.2: bytes=56 Sequence=5 ttl=255 time=30 ms
--- 10.0.12.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/30/30 ms
R2 can successfully ping the IP address 10.0.23.3 of R3.
ping 10.0.23.3
PING 10.0.23.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=2 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=3 ttl=255 time=41 ms
Reply from 10.0.23.3: bytes=56 Sequence=4 ttl=255 time=31 ms
Reply from 10.0.23.3: bytes=56 Sequence=5 ttl=255 time=41 ms
--- 10.0.23.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/35/41 ms
Step 2 Configure RIPv1.
Enable RIP on R1, and then advertise the 10.0.0.0 network segment to RIP.
[R1]rip 1
[R1-rip-1]network 10.0.0.0
Enable RIP on R2, and then advertise the 10.0.0.0 network segment to
RIP.
[R2]rip 1
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46 HUAWEI TECHNOLOGIES HC Series
[R2-rip-1]network 10.0.0.0
Enable RIP on R3, and then advertise the 10.0.0.0 network segment to RIP.
[R3]rip 1
[R3-rip-1]net 10.0.0.0
Step 3 Verify RIPv1 routes.
View the routing tables of R1, R2, and R3. Make sure that these routers have learned the RIP routes that are highlighted in gray in the following command output.
[R1]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0
10.0.3.0/24 RIP 100 2 D 10.0.12.2 Serial1/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.2/32 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 17 Routes : 17
Destination/Mask Proto Pre Cost Flags NextHop Interface
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10.0.1.0/24 RIP 100 1 D 10.0.12.1 Serial1/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.3.0/24 RIP 100 1 D 10.0.23.3 Serial2/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0
10.0.23.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0
10.0.23.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R3]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 2 D 10.0.23.2 Serial2/0/0
10.0.2.0/24 RIP 100 1 D 10.0.23.2 Serial2/0/0
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.3.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.0/24 RIP 100 1 D 10.0.23.2 Serial2/0/0
10.0.23.0/24 Direct 0 0 D 10.0.23.3 Serial2/0/0
10.0.23.2/32 Direct 0 0 D 10.0.23.2 Serial2/0/0
10.0.23.3/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
Test connectivity from R1 to IP address 10.0.23.3. R1 and R3 can
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48 HUAWEI TECHNOLOGIES HC Series
communicate with each other.
[R1]ping 10.0.23.3
PING 10.0.23.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=254 time=70 ms
Reply from 10.0.23.3: bytes=56 Sequence=2 ttl=254 time=65 ms
Reply from 10.0.23.3: bytes=56 Sequence=3 ttl=254 time=65 ms
Reply from 10.0.23.3: bytes=56 Sequence=4 ttl=254 time=65 ms
Reply from 10.0.23.3: bytes=56 Sequence=5 ttl=254 time=65 ms
--- 10.0.23.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 65/66/70 ms
You can run the debug command to view RIP periodic updates.
Run the debug command to enable the RIP debugging function. The
debug command can be used only in the user view. Then run the terminal debugging and terminal monitor commands to display the debugging information.
The information about RIP interactions between routers is displayed.
debug rip 1
terminal debugging
Info: Current terminal debugging is on.
terminal monitor
Info: Current terminal monitor is on.
Sep 19 2011 19:15:22.630.1+00:00 R1 RM/6/RMDEBUG: 6: 11647: RIP 1: Receiving v1
response on Serial1/0/0 from 10.0.12.2 with 2 RTEs
Sep 19 2011 19:15:22.630.2+00:00 R1 RM/6/RMDEBUG: 6: 11698: RIP 1: Receive response
from 10.0.12.2 on Serial1/0/0
Sep 19 2011 19:15:22.630.3+00:00 R1 RM/6/RMDEBUG: 6: 11709: Packet: Version 1,
Cmd response, Length 44
Sep 19 2011 19:15:22.630.4+00:00 R1 RM/6/RMDEBUG: 6: 11758: Dest 10.0.3.0, Cost
2
Sep 19 2011 19:15:22.630.5+00:00 R1 RM/6/RMDEBUG: 6: 11758: Dest 10.0.23.0, Cost
1
Sep 19 2011 19:15:52.650.1+00:00 R1 RM/6/RMDEBUG: 6: 11647: RIP 1: Receiving v1
response on Serial1/0/0 from 10.0.12.2 with 2 RTEs
Sep 19 2011 19:15:52.650.2+00:00 R1 RM/6/RMDEBUG: 6: 11698: RIP 1: Receive response
from 10.0.12.2 on Serial1/0/0
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Sep 19 2011 19:15:52.650.3+00:00 R1 RM/6/RMDEBUG: 6: 11709: Packet: Version 1,
Cmd response, Length 44
Sep 19 2011 19:15:52.650.4+00:00 R1 RM/6/RMDEBUG: 6: 11758: Dest 10.0.2.0, Cost
1
You can run the undo debug rip or undo debug all command to disable debugging functions.
undo debug rip 1
In addition, you can run the commands that have more parameters
to view the debugging information of a certain type. For example, run the debug rip 1 event command to view the periodical update events sent or received by routers. You can add the question mark (?) to the
command to query other parameters.
debug rip 1 event
Sep 19 2011 19:23:44.200.1+00:00 R1 RM/6/RMDEBUG: 25: 3873: RIP 1: Periodic timer
expired for interface Serial1/0/0 (10.0.12.1) and its added to periodic update
queue
Sep 19 2011 19:23:44.210.1+00:00 R1 RM/6/RMDEBUG: 25: 4201: RIP 1: Interface
Serial1/0/0 (10.0.12.1) is deleted from the periodic update queue
undo debug all
Info: All possible debugging has been turned off
Warning: If too many debugging functions are enabled, a large number of router resources are used. This may lead to break down.
Therefore, use the commands (such as debug all) for enabling debugging functions in batches with caution.
Step 4 Configure RIPv2.
After the preceding configuration, you need to configure only version 2 in the RIP sub view.
[R1]rip 1
[R1-rip-1]version 2
[R2]rip 1
[R2-rip-1]version 2
[R3]rip 1
[R3-rip-1]version 2
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HCDA-HNTD Chapter 3 RIP Configuration
50 HUAWEI TECHNOLOGIES HC Series
Step 5 Verify RIPv2 routes.
View the routing tables of R1, R2, and R3.
Run the display ip routing-table command to view the routing
tables of R1, R2, and R3. Compare the routes that are highlighted in gray with RIPv1 routes.
[R1]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0
10.0.3.0/24 RIP 100 2 D 10.0.12.2 Serial1/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.2/32 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
----------------------------------------------------------------------------
Routing Tables: Public
Destinations : 17 Routes : 17
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.12.1 Serial1/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
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HCDA-HNTD Chapter 3 RIP Configuration
HC Series HUAWEI TECHNOLOGIES 51
10.0.3.0/24 RIP 100 1 D 10.0.23.3 Serial2/0/0
10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0
10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0
10.0.12.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.12.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0
10.0.23.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0
10.0.23.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R3]display ip routing-table
Route Flags: R - relay, D - download to fib
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Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 2 D 10.0.23.2 Serial2/0/0
10.0.2.0/24 RIP 100 1 D 10.0.23.2 Se