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aveen Patel
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Point to Point
Protocol
Open Standard Protocol
(works with same and
different company
Routers i.e. Cisco
Nortel, CiscoMulticom.
Supports
Authentication
Supports Compression
High level Data link
Control
Vendor proprietary
Protocol (works with
same company Router
only, i.e. Cisco-Cisco,
Nortel-Nortel, etc.)
No Support for
Authentication
No Support for
Compression
PPP HDLC
Wan Encapsulation
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Data Communication
Equipment
Generate clocking
(i.e. Speed). Master
Example of DCE device in
Leased line setup : V.35 &
G.703 Modem & Exchange
(Modem & MUX)
Example of DCE device in
Dial up setup : Dialup
Modem
Data Termination
Equipment
Accept clocking
(i.e. Speed). Slave
Example of DTE device in
Leased line setup : Router
Example of DTE device in
Dial up setup : Computer
DCE DTE
Device Classification
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A Back to Back Cable is used which emulates the
copper wire, modems and MUX , the complete
exchange setup.
Without DCE & DTE device communication is not
possible.
Lab Setup
S0
S1
Wan Representation
HYD CHE
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V.35 Back to Back Cable
DTEDCE
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V.35 Smart Serial DTE & DCE Cable
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aveen Patel
V.35 DCE Cable
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aveen Patel
S117.0.0.2/8
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aveen Patel
LAN192.168.1.0/24LAN192.168.2.0/24
Wan Interface Configuration
10.0.0.1/8
S0
10.0.0.2/8
S1
E0
192.168.1.1/24
E0
192.168.2.1/24
HYD CHE
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aveen Patel
8/13/2019 Wan Interface
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aveen Patel
================================Welcome to HYDERABAD Router================================User Access Verificationpassword :****
****enableshow controllers S 0hyderabad>password :Hyderabad#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
HD unit 0, idb = 0xB7574, driver structure at 0xBC2F8buffer size 1524 HD unit 0, V.35 DCE cablecpb = 0x1, eda = 0x4940, cda = 0x4800RX ring with 16 entries at 0x401480000 bd_ptr=0x4800 pak=0x0BE054 ds=0x401B6A8 status=80 pak_size=001 bd_ptr=0x4814 pak=0x0BED04 ds=0x401E5B0 status=80 pak_size=002 bd_ptr=0x4828 pak=0x0BE224 ds=0x401BD60 status=80 pak_size=003 bd_ptr=0x483C pak=0x0BEED4 ds=0x401EC68 status=80 pak_size=0--More--
telnet 192.168.1.1
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04 bd_ptr=0x4850 pak=0x0BEB34 ds=0x401DEF8 status=80 pak_size=005 bd_ptr=0x4864 pak=0x0BF0A4 ds=0x401F320 status=80 pak_size=006 bd_ptr=0x4878 pak=0x0BDE84 ds=0x401AFF0 status=80 pak_size=007 bd_ptr=0x488C pak=0x0BE794 ds=0x401D188 status=80 pak_size=008 bd_ptr=0x48A0 pak=0x0BDCB4 ds=0x401A938 status=80 pak_size=009 bd_ptr=0x48B4 pak=0x0BE964 ds=0x401D840 status=80 pak_size=010 bd_ptr=0x48C8 pak=0x0BE3F4 ds=0x401C418 status=80 pak_size=011 bd_ptr=0x48DC pak=0x0BDAE4 ds=0x401A280 status=80 pak_size=012 bd_ptr=0x48F0 pak=0x0BD914 ds=0x4019BC8 status=80 pak_size=013 bd_ptr=0x4904 pak=0x0BD744 ds=0x4019510 status=80 pak_size=014 bd_ptr=0x4918 pak=0x0BD574 ds=0x4018E58 status=80 pak_size=015 bd_ptr=0x492C pak=0x0BD3A4 ds=0x40187A0 status=80 pak_size=016 bd_ptr=0x4940 pak=0x0BD1D4 ds=0x40180E8 status=80 pak_size=0cpb = 0x1, eda = 0x5014, cda = 0x5014TX ring with 2 entries at 0x401500000 bd_ptr=0x5000 pak=0x000000 ds=0x4031838 status=80 pak_size=2201 bd_ptr=0x5014 pak=0x000000 ds=0x000000 status=80 pak_size=002 bd_ptr=0x5028 pak=0x000000 ds=0x000000 status=80 pak_size=00 missed datagrams, 0 overruns0 bad datagram encapsulations, 0 memory errors0 transmitter underruns0 residual bit errorsHyderabad#
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aveen Patel
================================Welcome to Chennai Router================================User Access Verificationpassword :****
****enableshow controllers S 1Chennai>password :Chennai#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
HD unit 0, idb = 0xB7574, driver structure at 0xBC2F8buffer size 1524 HD unit 0, V.35 DTE cablecpb = 0xE1, eda = 0x4814, cda = 0x4828RX ring with 16 entries at 0xE1480000 bd_ptr=0x4800 pak=0x0BEB34 ds=0xE1DEF8 status=80 pak_size=1301 bd_ptr=0x4814 pak=0x0BF0A4 ds=0xE1F320 status=80 pak_size=1302 bd_ptr=0x4828 pak=0x0BED04 ds=0xE1E5B0 status=80 pak_size=003 bd_ptr=0x483C pak=0x0BE964 ds=0xE1D840 status=80 pak_size=0--More--
telnet 192.168.2.1
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aveen Patel
04 bd_ptr=0x4850 pak=0x0BE794 ds=0xE1D188 status=80 pak_size=005 bd_ptr=0x4864 pak=0x0BE5C4 ds=0xE1CAD0 status=80 pak_size=006 bd_ptr=0x4878 pak=0x0BE3F4 ds=0xE1C418 status=80 pak_size=007 bd_ptr=0x488C pak=0x0BE224 ds=0xE1BD60 status=80 pak_size=008 bd_ptr=0x48A0 pak=0x0BE054 ds=0xE1B6A8 status=80 pak_size=009 bd_ptr=0x48B4 pak=0x0BDE84 ds=0xE1AFF0 status=80 pak_size=010 bd_ptr=0x48C8 pak=0x0BDCB4 ds=0xE1A938 status=80 pak_size=011 bd_ptr=0x48DC pak=0x0BDAE4 ds=0xE1A280 status=80 pak_size=012 bd_ptr=0x48F0 pak=0x0BD914 ds=0xE19BC8 status=80 pak_size=013 bd_ptr=0x4904 pak=0x0BD744 ds=0xE19510 status=80 pak_size=014 bd_ptr=0x4918 pak=0x0BD574 ds=0xE18E58 status=80 pak_size=015 bd_ptr=0x492C pak=0x0BD3A4 ds=0xE187A0 status=80 pak_size=016 bd_ptr=0x4940 pak=0x0BD1D4 ds=0xE180E8 status=80 pak_size=0cpb = 0xE1, eda = 0x5028, cda = 0x5028TX ring with 2 entries at 0xE1500000 bd_ptr=0x5000 pak=0x000000 ds=0xE31964 status=80 pak_size=1301 bd_ptr=0x5014 pak=0x000000 ds=0xE31964 status=80 pak_size=1302 bd_ptr=0x5028 pak=0x000000 ds=0x000000 status=80 pak_size=00 missed datagrams, 0 overruns0 bad datagram encapsulations, 0 memory errors0 transmitter underruns0 residual bit errorsChennai#
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aveen Patel
telnet 192.168.1.1================================Welcome to Hyderabad Router================================User Access Verificationpassword :****
****enableconfigure terminalinterface serial 0ip address 10.0.0.1 255.0.0.0
no shutdownclockrate 64000encapsulation hdlc
Hyderabad>password :Hyderabad#Enter configuration commands, one per line. End with CNTL/Z.Hyderabad(config)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
Configuring Serial interface
Router(config)#interface serial
Router(config-if)#ip address
Router(config-if)#no shutdown
Router(config-if)#clockrate
Router(config-if)#encapsulation {ppp|hdlc}
exitHyderabad(config)#
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================================Welcome to Chennai Router================================User Access Verificationpassword :****
****enableconfigure terminal
ip address 10.0.0.2 255.0.0.0no shutdownencapsulation hdlcexit
Chennai>password :Chennai#Enter configuration commands, one per line. End with CNTL/Z.Chennai(config)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#Chennai(config)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....Configuring Serial interface
Router(config)#interface serial
Router(config-if)#ip address
Router(config-if)#no shutdown
Router(config-if)#clockrate
Router(config-if)#encapsulation {ppp|hdlc}
telnet 192.168.2.1
interface serial 1
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Hyderabad(config-if)#
telnet 192.168.1.1
================================Welcome to Hyderabad Router================================User Access Verificationpassword :****
****enableconfigure terminalinterface serial 0ip address 10.0.0.1 255.0.0.0
no shutdownclockrate 64000encapsulation hdlc
Hyderabad>password :Hyderabad#Enter configuration commands, one per line. End with CNTL/Z.Hyderabad(config)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#Hyderabad(config-if)#
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....
exitHyderabad(config)# exitHyderabad# show int s0
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aveen Patel
Serial0 is up, line protocol is upHardware is HD64570Internet address is 10.0.0.1/8MTU 1500 bytes,BW 1544 Kbit,DLY 20000 usec,rely 255/255,load 1/255Encapsulation HDLC, loopback not set, keepalive set (10 sec)Last input 00:05:29, output 00:00:03, output hang neverLast clearing of show interface counters neverInput queue: 0/75/0 (size/max/drops); Total output drops: 0Queueing strategy: weighted fairOutput queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)Reserved Conversations 0/0 (allocated/max allocated)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec997 packets input, 20161 bytes, 0 no bufferReceived 875 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abor 899 packets output, 24785 bytes, 0 underruns0 output errors, 0 collisions, 132 interface resets0 output buffer failures, 0 output buffers swapped out325 carrier transitionsDCD=up DSR=up DTR=up RTS=up CTS=up
Hyderabad# show int s0
1. Serial0 is up, line protocol is up
Implies, all configurations and the connectivity are
fine.
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aveen Patel
Serial0 is up, line protocol is downHardware is HD64570Internet address is 10.0.0.1/8MTU 1500 bytes,BW 1544 Kbit,DLY 20000 usec,rely 255/255,load 1/255Encapsulation HDLC, loopback not set, keepalive set (10 sec)Last input 00:07:56, output 00:00:05, output hang neverLast clearing of show interface counters neverInput queue: 0/75/0 (size/max/drops); Total output drops: 0Queueing strategy: weighted fairOutput queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)Reserved Conversations 0/0 (allocated/max allocated)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec1028 packets input, 20595 bytes, 0 no bufferReceived 906 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abor 917 packets output, 25475 bytes, 0 underruns0 output errors, 0 collisions, 138 interface resets0 output buffer failures, 0 output buffers swapped out341 carrier transitionsDCD=up DSR=up DTR=up RTS=up CTS=up
Hyderabad#
3. Serial0 is up, line protocol is down
Implies , Encapsulation or Clock Rate (Layer2
commands) have not been given or encapsulation on
both the routers are different.
show int s0
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aveen Patel
Serial0 is down, line protocol is downHardware is HD64570Internet address is 10.0.0.1/8MTU 1500 bytes,BW 1544 Kbit,DLY 20000 usec,rely 255/255,load 1/255Encapsulation HDLC, loopback not set, keepalive set (10 sec)Last input 00:12:40, output 00:00:08, output hang neverLast clearing of show interface counters neverInput queue: 0/75/0 (size/max/drops); Total output drops: 0Queueing strategy: weighted fairOutput queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)Reserved Conversations 0/0 (allocated/max allocated)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec1088 packets input, 21435 bytes, 0 no bufferReceived 966 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abor 945 packets output, 26091 bytes, 0 underruns0 output errors, 0 collisions, 147 interface resets0 output buffer failures, 0 output buffers swapped out370 carrier transitionsDCD=down DSR=down DTR=up RTS=up CTS=down
Hyderabad#
4. Serial0 is down, line protocol is down
Implies , No Shut has not been given on the remote
routers interface or some problem with the physical
connectivity.
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