Switch vlan

• Spanning Tree Protocol (STP) uses Spanning Tree

Algorithm to avoid the Switching loops in layer-2

devices (bridges or switches).

• STP works when multiple switches are used with

redundant links avoiding Broadcast Storms, Multiple

Frame Copies & Database instability.

• First Developed By DEC

• STP is a open standard (IEEE 802.1D)

Spanning Tree Protocol

STP

Switch D


Root :B

Root :A

Root :C

Root ID:32768.0000-0000-00001

Root ID:32768.0000-0000-00003Root ID:32768.0000-0000-00002

Bridge ID:32768.0000-0000-00001

Bridge ID:32768.0000-0000-00002 Bridge ID:32768.0000-0000-00003

FA0/23

Switch B Switch C

Switch AFA0/24

FA0/24

FA0/23 FA0/24

FA0/23

I'm the Root

I'm the RootI'm the Root

STP

Switch D


Root :B

Root :A

Root :C

Root ID:32768.0000-0000-00001

Root ID:32768.0000-0000-00003Root ID:32768.0000-0000-00002

Bridge ID:32768.0000-0000-00001


FA0/23

Switch B Switch C

Switch AFA0/24

FA0/24

FA0/23 FA0/24

FA0/23

I'm the Root Because MY ID is Lesser

I'm the Not Root Because B ID is Lesser

B Root ID:32768.0000-0000-00002B Root ID:32768.0000-0000-00002B Root ID:32768.0000-0000-00002Root ID:32768.0000-0000-00002

Root :B

STP

Switch D


Root :B

Root :A

Root :B

Root ID:32768.0000-0000-00001

Root ID:32768.0000-0000-00002Root ID:32768.0000-0000-00002

Bridge ID:32768.0000-0000-00001


FA0/23

Switch B Switch C

Switch AFA0/24

FA0/24

FA0/23 FA0/24

FA0/23

A Root ID:32768.0000-0000-00001A Root ID:32768.0000-0000-00001A Root ID:32768.0000-0000-00001

B is not Root Because A ID

is Lesser

I'm the Not Root Because A ID Is Lesser

Root :ARoot :A

Root ID:32768.0000-0000-00001Root ID:32768.0000-0000-00001

Bridge ID:32768.0000-0000-00001


FA0/23

Switch B Switch C

Switch AFA0/24

FA0/24

FA0/23 FA0/24

FA0/23

Root :A Root ID:32768.0000-0000-00001

Root :ARoot :A

Root ID:32768.0000-0000-00001Root ID:32768.0000-0000-00001


Spee

d 10

0 M

bps S

peed

100 Mbps

Speed 100 Mbps

Root Port Root Port

D P

ort D P

ort

D Port Non D. Port

X

• BPDU

– All switches exchange information through what is

called as Bridge Protocol Data Units (BPDUs)

– BPDUs contain a lot of information to help the switches

determine the topology and any loops that result from

that topology.

– BPDUs are sent every 2 sec

• Bridge ID

– Each switch has a unique identifier called a Bridge ID or

Switch ID

– Bridge ID = Priority + MAC address of the switch

– When a switch advertises a BPDU , they place their

switch id in these BPDUs.

STP Terminology

• Root Bridge

– The bridge with the Best (Lowest) ID.

– Out of all the switches in the network , one is elected

as a root bridge that becomes the focal point in the

network.

• Non-Root bridge

– All Switches other than the Root Bridge are Non-Root

Bridges

STP Terminology

• Designated port

– Either a port On a root bridge or a port that has been

determined as having the best (lower) cost.

– A designated port will always in Forward Mode

• Root port

– The link directly connected to the root bridge, or the

shortest path to the root bridge.

– Priority and Alternatives if Config occurred.

• Root port with the least cost (Speed) connecting to the root bridge.

• The bridge with the Best (Lowest) Switch ID.

• Lowest Physical Port Number.

– Only One root port will Be in Bridge or switch.

• Non Designated port

– All the Port or ports which are blocked by STP to avoid switching loop.

– A Non Designated port Will Always in Blocked Mode.

STP Terminology

• Blocking - 20 Sec Or No Limits.

• Listening - 15 Sec.

• Learning - 15 Sec.

• Forwarding - No Limits.

• Disable - No Limits.

Switch - Port States

• A Layer 2 Security

• Divides a Single Broadcast domain into Multiple

Broadcast domains.

• By default all ports of the switch are in VLAN1 . This

VLAN1 is known as Administrative VLAN or

Management VLAN

• VLAN can be created from 2 – 1001

• Can be Configured on a Manageable switch only

• 2 Types of VLAN Configuration

– Static VLAN

– Dynamic VLAN

Virtual LAN

Static VLAN

• Static VLAN’s are based on port numbers

• Need to manually assign a port on a switch to a

VLAN

• Also called Port-Based VLANs

• It can be a member of single VLAN and not

multiple VLAN’s

• Dynamic VLAN’s are based on the MAC address of

a PC

• Switch automatically assigns the port to a VLAN

• Each port can be a member of multiple VLAN’s

• For Dynamic VLAN configuration, a software called

VMPS( VLAN Membership Policy Server) is needed

Dynamic VLAN

• The PC port from which you Telnet to the switch

must be in a Default VLAN

• If all the ports are in different VLAN’s ,can you

Telnet to the switch?

Answer : NO

• So to remove the VLAN’s enter through console

port

Important Notes

192.168.20.6 192.168.20.5 192.168.20.4

192.168.20.7 192.168.20.8 192.168.20.9

192.168.20.1 192.168.20.2 192.168.20.3

SWITCH

Default VLANi.e. VLAN No. 1

VLAN - Lab Diagram

SalesVlan no.

10

SalesVlan no.

10

VLAN - Lab Diagram

192.168.20.1 192.168.20.2 192.168.20.3

SWITCH

SalesVlan no.

10

SalesVlan no.

10

VLAN - Configuration

192.168.20.1 192.168.20.2 192.168.20.3

SWITCH

SalesVlan no.

10

SalesVlan no.

10

VLAN - Lab Diagram

192.168.20.1 192.168.20.2 192.168.20.3

SWITCH

Trunking Configuration

MarketingVlan no.

20

SalesVlan no.

10

192.168.20.1 192.168.20.2 192.168.20.3

s65

MarketingVlan no.

20

SalesVlan no.

10

192.168.20.6 192.168.20.5 192.168.20.4

S75

Fa0/24

Fa0/24

• VTP is a CISCO proprietary protocol

• used to share the VLAN configurations with multiple

switches.

• Information will be passed only if switches

connected with FastEthernet or higher ports.

• Note: Switches Should be configure with same Domain. Domain are not

Case sensitive.

Virtual LAN Trunking Protocol

VTP Mode are of three types :

• Server Mode

– A Switch configured in Server mode can Add , Modify

and Delete VLAN’s

– A Default VTP mode for all switches

• Client Mode

– A switch configured in Client mode cannot Add , Modify and

Delete its VLAN configurations

– Doesn’t store its VLAN configuration information in the

NVRAM. Instead , learns it from the server every time it

boots up

• Transparent Mode

– A switch configured in a Transparent Mode can Add ,

Modify and Delete VLAN configurations. Changes in one

transparent switch will not affect any other switch.

VTP Modes

VTP Messages

• Advertisement Request

• Subset Advertisement

• Summary Advertisement

VLAN Trunking Protocol Configuration

MarketingVlan no. 6

SalesVlan no. 5

192.168.20.1 192.168.20.2 192.168.20.3

VTP Server

MarketingVlan no. 6

SalesVlan no. 5

192.168.20.6 192.168.20.5 192.168.20.4

VTP Client

Fa0/24

Fa0/24

CDP

• Cisco Property Protocol.• CDP is enable by default in All Cisco Networking

Devices.• CDP Advertisement are send through all the

ports by default.• CDP Advertisement are send every 60 second.• Advertisement are send via multicast.

• Once the Layer 1 is Active CDP Sends the information to its neighbor.

• It can be used for Layer 1, layer 2, layer 3 trouble shouting.

• Information– Logical Address (if define). – Hostname (given by hostname command).– Hardware Platform.– IOS Version.– Interface Type and Interface Number of local and

remote device connected.

Advantages Of CDP

• CDP Can be used only between Cisco Devices.

• Information about only directly connected neighbors can be known.

• Can be used to trouble only between two Cisco devices not any other like Pc To switch.

Disadvantages Of CDP

CDP

S50S24

HYD Bombay CHE Agra Simla DELE0 E0 E0 E0 E0 E0

surat

sri

E0

E0

THE END

User Access Verification

Password:

Microsoft Windows [Version 5.2.3790](C) Copyright 1985-2003 Microsoft Corp.

C:\>telnet 192.168.20.165Connecting To 192.168.20.165...

****

switch65>switch65>EnablePassword: ****Switch65#Show VlanVLAN Name Status Ports---- -------------------------------- --------- -------------------------------1 Default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10, Fa0/11, Fa0/12 Fa0/13, Fa0/14, Fa0/15, Fa0/16 Fa0/17, Fa0/18, Fa0/19, Fa0/20 Fa0/21, Fa0/22, Fa0/23, Fa0/241002 fddi-default act/unsup1003 trcrf-default act/unsup1004 fddinet-default act/unsup1005 trbrf-default act/unsup

--More--

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------1 enet 100001 1500 - - - - - 0 01002 fddi 101002 1500 - - - - - 0 01003 trcrf 101003 4472 1005 3276 - - srb 0 01004 fdnet 101004 1500 - - - ieee - 0 01005 trbrf 101005 4472 - - 15 ibm - 0 0

VLAN AREHops STEHops Backup CRF---- ------- ------- ----------1003 7 7 off

Remote SPAN VLANs------------------------------------------------------------------------------

Primary Secondary Type Ports------- --------- ----------------- ------------------------------------------

Show interface statusswitch65#Port Name Status Vlan Duplex Speed TypeFa0/1 notconnect 1 auto auto 10/100BaseTXFa0/2 notconnect 1 auto auto 10/100BaseTXFa0/3 notconnect 1 auto auto 10/100BaseTXFa0/4 notconnect 1 auto auto 10/100BaseTXFa0/5 notconnect 1 auto auto 10/100BaseTXFa0/6 notconnect 1 auto auto 10/100BaseTXFa0/7 connected 1 a-full a-100 10/100BaseTXFa0/8 connected 1 a-full a-100 10/100BaseTXFa0/9 connected 1 a-full a-100 10/100BaseTXFa0/10 connected 1 a-full a-100 10/100BaseTXFa0/11 notconnect 1 auto auto 10/100BaseTXFa0/12 notconnect 1 auto auto 10/100BaseTXFa0/13 notconnect 1 auto auto 10/100BaseTXFa0/14 notconnect 1 auto auto 10/100BaseTXFa0/15 notconnect 1 auto auto 10/100BaseTXFa0/16 connected 1 a-full a-100 10/100BaseTXFa0/17 notconnect 1 auto auto 10/100BaseTXFa0/18 notconnect 1 auto auto 10/100BaseTXFa0/19 notconnect 1 auto auto 10/100BaseTX---More---

Port Name Status Vlan Duplex Speed TypeFa0/20 notconnect 1 auto auto 10/100BaseTXFa0/21 notconnect 1 auto auto 10/100BaseTXFa0/22 notconnect 1 auto auto 10/100BaseTXFa0/23 notconnect 1 auto auto 10/100BaseTXFa0/24 connected 1 a-full a-100 10/100BaseTX

switch65# Config terminalswitch65(config)# vlan 10

switch65(config-vlan)# name salesswitch65(config-vlan)# exit

switch65(config)# ^zswitch65#

switch65(config)# vlan 20

switch65(config-vlan)# name mktswitch65(config-vlan)# exit

VLAN Creation – 2950 SeriesSwitch(config)# vlan <no>Switch(config-Vlan)# name <name>

Switch(config-Vlan)# Exit

VLAN Creation – 2900 SeriesSwitch# vlan databaseSwitch(vlan)# vlan <no> name <name>Switch(vlan)# exit

VLAN Creation – 2950 SeriesSwitch(config)# vlan <no>Switch(config-Vlan)# name <name>

Switch(config-Vlan)# Exit

VLAN Creation – 2900 SeriesSwitch# vlan databaseSwitch(vlan)# vlan <no> name <name>Switch(vlan)# exit

VLAN Name Status Ports---- -------------------------------- --------- -------------------------------1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4

Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10, Fa0/11, Fa0/12

Fa0/13, Fa0/14, Fa0/15, Fa0/16 Fa0/17, Fa0/18, Fa0/19, Fa0/20 Fa0/21, Fa0/22, Fa0/23, Fa0/2410 sales active20 mkt active1002 fddi-default act/unsup1003 trcrf-default act/unsup1004 fddinet-default act/unsup1005 trbrf-default act/unsup

switch65# Show Vlan

switch65# Config terminalswitch65(config)# interface fastEthernet 0/1

switch65(config-if)#switch65(config-if)#

switchport mode access

switchport access vlan 10

switch65(config)# interface fastEthernet 0/3


switchport mode access

switchport access vlan 10

VLAN Name Status Ports---- ------------------------------ --------- -------------------------------1 default active Fa0/2, Fa0/4, Fa0/5, Fa0/6, Fa0/7, Fa0/8, Fa0/9,

Fa0/10, Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15,

Fa0/16, Fa0/17, Fa0/18, Fa0/19, Fa0/20, Fa0/21,

Fa0/22, Fa0/23, Fa0/2410 sales active Fa0/1, Fa0/320 mkt active1002 fddi-default act/unsup1003 trcrf-default act/unsup1004 fddinet-defaultact/unsup

switch65# show vlan

switch65(config-if)# exit

switch65(config)# ^z

Vlan Implementation Switch(config)# interface <interface type> <interface no.>Switch(config-if)# switchport mode access

Switch(config-if)# switchport access Vlan <no>

Vlan Implementation Switch(config)# interface <interface type> <interface no.>Switch(config-if)# switchport mode access

Switch(config-if)# switchport access Vlan <no>

Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>pinging 192.168.20.2 with 32 bytes of data:

ping 192.168.20.2

Ping statistics for 192.168.20.2: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>

Request timed out.Request timed out.Request timed out.Request timed out.

pinging 192.168.20.3 with 32 bytes of data:ping 192.168.20.3

Ping statistics for 192.168.20.3: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0msC:\>

Reply from 192.168.20.3: bytes=32 time<10ms TTL=255Reply from 192.168.20.3: bytes=32 time<10ms TTL=255Reply from 192.168.20.3: bytes=32 time<10ms TTL=255Reply from 192.168.20.3: bytes=32 time<10ms TTL=255


ping 192.168.20.1


C:\>






ping 192.168.20.2


C:\>





switch65# Config terminalswitch65(config)# interface FastEthernet 0/24


switchport mode trunkswitchport trunk allowed vlan all

switch65(config)# exitswitch65(config)# ^Zswitch65# show interface trunk

Port Mode Encapsulation Status Native vlanFa0/24 on 802.1q trunking 1

Port Vlans allowed on trunkFa0/24 1-4094

Port Vlans allowed and active in management domainFa0/24 1,10,20

Port Vlans in spanning tree forwarding state and not prunedFa0/24 1,10,20

Trunking Configuration – 2900 SeriesSwitch(config)# interface <interface type> <interface no.>Switch(config-if)# switchport trunk allowed vlan {<vlan no.>|all}

Switch(config-if)# switchport trunk encapsulation dot1q (2900)

Trunking Configuration – 2900 SeriesSwitch(config)# interface <interface type> <interface no.>Switch(config-if)# switchport trunk allowed vlan {<vlan no.>|all}

Switch(config-if)# switchport trunk encapsulation dot1q (2900)

Show interface statusSwitch65#Port Name Status Vlan Duplex Speed TypeFa0/1 connect 10 auto auto 10/100BaseTXFa0/2 connect 1 auto auto 10/100BaseTXFa0/3 connect 10 auto auto 10/100BaseTXFa0/4 notconnect 1 auto auto 10/100BaseTXFa0/5 notconnect 1 auto auto 10/100BaseTXFa0/6 notconnect 1 auto auto 10/100BaseTXFa0/7 connected 1 a-full a-100 10/100BaseTXFa0/8 connected 1 a-full a-100 10/100BaseTXFa0/9 connected 1 a-full a-100 10/100BaseTXFa0/10 connected 1 a-full a-100 10/100BaseTXFa0/11 notconnect 1 auto auto 10/100BaseTXFa0/12 notconnect 1 auto auto 10/100BaseTXFa0/13 notconnect 1 auto auto 10/100BaseTXFa0/14 notconnect 1 auto auto 10/100BaseTXFa0/15 notconnect 1 auto auto 10/100BaseTXFa0/16 connected 1 a-full a-100 10/100BaseTXFa0/17 notconnect 1 auto auto 10/100BaseTXFa0/18 notconnect 1 auto auto 10/100BaseTXFa0/19 notconnect 1 auto auto 10/100BaseTX---More---

Port Name Status Vlan Duplex Speed TypeFa0/20 notconnect 1 auto auto 10/100BaseTXFa0/21 notconnect 1 auto auto 10/100BaseTXFa0/22 notconnect 1 auto auto 10/100BaseTXFa0/23 notconnect 1 auto auto 10/100BaseTXFa0/24 connected trunk a-full a-100 10/100BaseTX

Switch65#

VLAN Name Status Ports---- ------------------------------ --------- -------------------------------1 default active Fa0/2, Fa0/4, Fa0/5, Fa0/6, Fa0/7, Fa0/8, Fa0/9,

Fa0/10, Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15,

Fa0/16, Fa0/17, Fa0/18, Fa0/19, Fa0/20, Fa0/21,

Fa0/22, Fa0/2310 sales active Fa0/1, Fa0/320 mark active1002 fddi-default act/unsup1003 trcrf-default act/unsup1004 fddinet-defaultact/unsup1005 trbrf-default act/unsup

show vlan




switch75(config-if)#exitswitch75(config)# ^Zswitch75# show interface trunk





Trunking Configuration – 2900 SeriesSwitch(config)# interface <interface type> <interface no.>Switch(config-if)# switchport trunk allowed vlan {<vlan no.>|all}Switch(config-if)# switchport trunk encapsulation dot1q (2900)





switch65(config-if)# exitswitch65(config)# ^Zswitch65# show interface trunk







switch65# Config terminalswitch65(config)# vtp domain zoom

switch65(config)#switch65(config)#

vtp mode servervtp password cisco

switch65(config)# ^zswitch65# show vtp status

switch65(config)# vtp pruning

VTP Version : 2Configuration Revision : 0Maximum VLANs supported locally : 64Number of existing VLANs : 7VTP Operating Mode : ServerVTP Domain Name : zoomVTP Pruning Mode : EnabledVTP V2 Mode : EnabledVTP Traps Generation : DisabledMD5 digest : 0xE4 0x74 0xA1 0xA3 0x21 0x8D 0xF1 0xB0Configuration last modified by 192.168.20.65 at 3-1-93 01:13:25Local updater ID is 192.168.20.65 on interface Vl1 (lowest numbered VLAN interface found)

VTP Configuration – 2950 SeriesSwitch(config)# VTP Domain <Name>Switch(config)# VTP Password <password>Switch(config)# VTP Mode <server/client/transparent>Switch(config)# VTP pruning

VTP Configuration – 2900 SeriesSwitch#VLAN DatabaseSwitch(VLAN)# VTP Domain <Name>Switch(VLAN)# VTP Password <password>Switch(VLAN)# VTP Mode <server/client/transparent>Switch(VLAN)# VTP pruning

VTP Configuration – 2950 SeriesSwitch(config)# VTP Domain <Name>Switch(config)# VTP Password <password>Switch(config)# VTP Mode <server/client/transparent>Switch(config)# VTP pruning

VTP Configuration – 2900 SeriesSwitch#VLAN DatabaseSwitch(VLAN)# VTP Domain <Name>Switch(VLAN)# VTP Password <password>Switch(VLAN)# VTP Mode <server/client/transparent>Switch(VLAN)# VTP pruning

Vtp clientswitch75# Config terminalswitch75(config)# vtp domain zoom

switch75(config)#switch75(config)#

vtp mode Clientvtp password cisco

switch75(config)# ^zswitch75# show vtp status

switch75(config)# vtp pruning

VTP Version : 2Configuration Revision : 0Maximum VLANs supported locally : 64Number of existing VLANs : 7VTP Operating Mode : ClientVTP Domain Name : zoomVTP Pruning Mode : EnabledVTP V2 Mode : EnabledVTP Traps Generation : DisabledMD5 digest : 0xE4 0x74 0xA1 0xA3 0x21 0x8D 0xF1 0xB0Configuration last modified by 192.168.20.65 at 3-1-93 01:13:25Local updater ID is 192.168.20.65 on interface Vl1 (lowest numbered VLAN interface found)


ping 192.168.20.2


C:\>






ping 192.168.20.1


C:\>





Cdp

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r – Repeater

Device ID Local Intrfce Holdtme Capability Platform Port IDHYD Fas 0/4 140 R 2500 Eth 0S50 Fas 0/24 126 S I WS-C2950T- Fas 0/24Agra Fas 0/8 130 R 2500 Eth 0Simla Fas 0/10 160 R 2500 Eth 0Bombay Fas 0/5 158 R 2500 Eth 0Surat Fas 0/6 124 R 2500 Eth 0CHE Fas 0/7 140 R 2520 Eth 0Sri Fas 0/18 120 R 2611 Eth 0/0Del Fas 0/9 150 R 2500 Eth 0

s24#

Global CDP information: Sending CDP packets every 60 seconds Sending a holdtime value of 180 seconds Sending CDPv2 advertisements is enabled

s24# show cdp neighbors

show cdp

cdp2s24# show cdp neighbors detail -------------------------Device ID: HYDEntry address(es): IP address: 192.168.4.150Platform: cisco 2500, Capabilities: RouterInterface: FastEthernet0/4, Port ID (outgoing port): Ethernet0Holdtime : 131 secVersion : Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-P-L), Version 12.0(24), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Mon 30-Sep-02 20:43 by sraniadvertisement version: 1-------------------------Device ID: s50Entry address(es): IP address: 192.168.20.50Platform: cisco WS-C2950T-24, Capabilities: Switch IGMPInterface: FastEthernet0/24, Port ID (outgoing port): FastEthernet0/24Holdtime : 177 sec--More--

cdp3Version :Cisco Internetwork Operating System SoftwareIOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(12c)EA1, RELEASE SOFTWA (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Sun 24-Nov-02 23:31 by antoninoadvertisement version: 2Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=000000FFFFFFFF010221FF000000000000000BFDFE9800FF0000VTP Management Domain: ‘zoom'Native VLAN: 1Duplex: full-------------------------Device ID: AgraEntry address(es): IP address: 192.168.8.150Platform: cisco 2500, Capabilities: RouterInterface: FastEthernet0/8, Port ID (outgoing port): Ethernet0Holdtime : 174 secVersion :-- More --

Cdp4Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.1(12b), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Fri 01-Feb-02 07:30 by kellythwadvertisement version: 2Duplex: half-------------------------Device ID: SIMLAEntry address(es): IP address: 192.168.10.150Platform: cisco 2500, Capabilities:Interface: FastEthernet0/10, Port ID (outgoing port): Ethernet0Holdtime : 141 secVersion :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.0(9), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2000 by cisco Systems, Inc.Compiled Mon 24-Jan-00 21:19 by bettyladvertisement version: 1

--More--

Cdp5-------------------------Device ID: BombayEntry address(es): IP address: 192.168.5.150Platform: cisco 2500, Capabilities: RouterInterface: FastEthernet0/5, Port ID (outgoing port): Ethernet0Holdtime : 135 secVersion :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-P-L), Version 12.0(24), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Mon 30-Sep-02 20:43 by sraniadvertisement version: 1-------------------------Device ID: suratEntry address(es): IP address: 192.168.6.150Platform: cisco 2500, Capabilities: RouterInterface: FastEthernet0/6, Port ID (outgoing port): Ethernet0Holdtime : 158 sec

-- More--

cdp6Version :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.1(12b), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Fri 01-Feb-02 07:30 by kellythwadvertisement version: 2Duplex: half-------------------------Device ID: CHEEntry address(es): IP address: 192.168.7.150Platform: cisco 2520, Capabilities: RouterInterface: FastEthernet0/7, Port ID (outgoing port): Ethernet0Holdtime : 173 secVersion :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.1(12b), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Fri 01-Feb-02 07:30 by kellythwadvertisement version: 2Duplex: half--More--

cdp7Device ID: sriEntry address(es): IP address: 192.168.11.150Platform: cisco 2611, Capabilities: RouterInterface: FastEthernet0/18, Port ID (outgoing port): Ethernet0/0Version :Cisco Internetwork Operating System SoftwareIOS (tm) C2600 Software (C2600-I-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)Copyright (c) 1986-1999 by cisco Systems, Inc.Compiled Tue 07-Dec-99 02:12 by phanguye-------------------------Device ID: delEntry address(es): IP address: 192.168.9.150Platform: cisco 2500, Capabilities: RouterInterface: FastEthernet0/9, Port ID (outgoing port): Ethernet0Version :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-P-L), Version 12.0(24), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Mon 30-Sep-02 20:43 by sraniadvertisement version: 1

cdp8s24# show cdp interface fa 0/24

FastEthernet0/24 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds

CDP On CHE Routerchennai#

chennai#

Global CDP information: Sending CDP packets every 60 seconds Sending a holdtime value of 180 seconds

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - RepeaterDevice ID Local Intrfce Holdtme Capability Platform Port IDBan Ser 0 145 R 2509 Ser 1Hyd Ser 1 141 R 2500 Ser 0S50 Eth 0 124 S I WS-C2950T-Fas 0/2

show cdp

show cdp neighbors

Cdp r 2chennai# show cdp neighbors detail -------------------------Device ID: s50Entry address(es): IP address: 192.168.20.50Platform: cisco WS-C2950T-24, Capabilities: Switch IGMPInterface: Ethernet0, Port ID (outgoing port): FastEthernet0/2Version :Cisco Internetwork Operating System SoftwareIOS - C2950 Software (C2950-I6Q4L2-M), Version 12.1(12c), RELEASE SOFTWARCopyright (c) 1986-2002 by cisco Systems, Inc.-------------------------Device ID: banEntry address(es): IP address: 11.0.0.2Platform: cisco 2509, Capabilities: RouterInterface: Serial0, Port ID (outgoing port): Serial1Holdtime : 121 secVersion :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.1(12b), RELEASE SOFTWARECopyright (c) 1986-2002 by cisco Systems, Inc.-- More --

Cdp r 3`Device ID: hydEntry address(es): IP address: 10.0.0.1Platform: cisco 2500, Capabilities: RouterInterface: Serial1, Port ID (outgoing port): Serial0Holdtime : 175 secVersion :Cisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-I-L), Version 12.1(12b), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.

show cdp interfaceEthernet0 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 secondsSerial0 is up, line protocol is up Encapsulation HDLC Sending CDP packets every 60 seconds Holdtime is 180 secondsSerial1 is up, line protocol is up Encapsulation HDLC Sending CDP packets every 60 seconds

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