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• 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
Switch D
Spanning Tree Protocol
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 C
Switch A
FA0/24
FA0/24
FA0/23 FA0/24
FA0/23
I'm the RootI'm the Root
I'm the Root
Switch B
Spanning Tree Protocol
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
Switch B
Switch C
Switch A
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
FA0/23FA0/24
FA0/24
FA0/23 FA0/24
FA0/23
Switch D
Spanning Tree Protocol
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
Bridge ID:32768.0000-0000-00002 Bridge ID:32768.0000-0000-00003
Switch B
Switch C
Switch A
A Root ID:32768.0000-0000-00001A Root ID:32768.0000-0000-00001A Root ID:32768.0000-0000-00001
Root :ARoot :A
Root ID:32768.0000-0000-00001Root ID:32768.0000-0000-00001
FA0/23FA0/24
FA0/24
FA0/23 FA0/24
B is not Root Because A ID
is Lesser
I'm the Not Root Because A ID Is Lesser
Bridge ID:32768.0000-0000-00001
Bridge ID:32768.0000-0000-00002 Bridge ID:32768.0000-0000-00003
Switch BSwitch C
Switch A
Root :A Root ID:32768.0000-0000-00001
Root :ARoot :A
Root ID:32768.0000-0000-00001Root ID:32768.0000-0000-00001
Spanning Tree Protocol
Spee
d 10
0 M
bps S
peed
100 Mbps
Speed 100 Mbps
Root Port
D P
ort D P
ort
Non D. Port
X
FA0/23FA0/24
FA0/24
FA0/23 FA0/24
FA0/23
Root Port D Port
• 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
• Disable - No Limits.
• Blocking - 20 Sec Or No Limits.
• Listening - 15 Sec.
• Learning - 15 Sec.
• Forwarding - No Limits.
Switch - Port States
• vlan provide 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
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
MarketingVlan no.
20
SalesVlan no.
10
192.168.20.6 192.168.20.5 192.168.20.4
Fa0/24
S65
S75
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
MarketingVlan no. 6
SalesVlan no. 5
192.168.20.6 192.168.20.5 192.168.20.4 Fa0/24
Fa0/24
VTP Server
VTP Client
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 troubleshooting.
• 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 troubleshoot only between two Cisco
devices not any other like Pc To switch.
Disadvantages Of CDP
CDP
E0 E0 E0 E0 E0 E0
E0
E0
HYD CHEBombay Agra Simla DEL
Surat
CHE
SRI
S24 S50
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: ****
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, Fa0/241002 fddi-default act/unsup1003 trcrf-default act/unsup1004 fddinet-default act/unsup1005 trbrf-default act/unsup
--More--
Switch65#Show Vlan
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
switch65(config-if)#switch65(config-if)#
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
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>pinging 192.168.20.1 with 32 bytes of data:
ping 192.168.20.1
Ping statistics for 192.168.20.1: 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 = 0, Lost = 4 (100% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0msC:\>
Request timed out.Request timed out.Request timed out.Request timed out.
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 192.168.20.1 with 32 bytes of data:ping 192.168.20.1
Ping statistics for 192.168.20.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0msC:\>
Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255
switch65# Config terminalswitch65(config)# interface FastEthernet 0/24
switch65(config-if)#switch65(config-if)#
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 mode trunkSwitch(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 mode trunkSwitch(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 terminalswitch75(config)# interface FastEthernet 0/24
switch75(config-if)#switch75(config-if)#
switchport mode trunkswitchport trunk allowed vlan all
switch75(config-if)#exitswitch75(config)# ^Zswitch75# 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)
switch65# Config terminalswitch65(config)# interface FastEthernet 0/24
switch65(config-if)#switch65(config-if)#
switchport mode trunkswitchport trunk allowed vlan all
switch65(config-if)# 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)
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)
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 = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>
Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255
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
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>pinging 192.168.20.1 with 32 bytes of data:
ping 192.168.20.1
Ping statistics for 192.168.20.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>
Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255
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
Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>pinging 192.168.20.1 with 32 bytes of data:
ping 192.168.20.1
Ping statistics for 192.168.20.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>
Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255Reply from 192.168.20.1: bytes=32 time<10ms TTL=255
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 = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0msC:\>
Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255Reply from 192.168.20.2: bytes=32 time<10ms TTL=255
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
chennai#
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
chennai#