Solved: Packet Tracer LAB(VTP)

Dinesh Kumar Mariappan · ‎07-13-2013

i am working on Packet Tracer on VTP.. But it is not working properly.. VTP client was not receiving the VLAN updates from server switch... please tell me any one facing the same problem on packet tracer.. Sample simple config below for two swithces..

SWITCH 1

sh vtp status

VTP Version : 2

Configuration Revision : 1

Maximum VLANs supported locally : 255

Number of existing VLANs : 6

VTP Operating Mode : Server

VTP Domain Name : CCNP

VTP Pruning Mode : Disabled

VTP V2 Mode : Disabled

VTP Traps Generation : Disabled

MD5 digest : 0x69 0xEA 0x7A 0x35 0x7A 0xD8 0x1D 0xD5

Configuration last modified by 0.0.0.0 at 3-1-93 00:01:23

Local updater ID is 0.0.0.0 (no valid interface found)

sh vlan brief

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, Fa0/24

Gig1/1, Gig1/2

10 VLAN0010 active

1002 fddi-default active

1003 token-ring-default active

1004 fddinet-default active

1005 trnet-default active

Switch 2

h vtp status

VTP Version : 2

Configuration Revision : 0

Maximum VLANs supported locally : 255

Number of existing VLANs : 5

VTP Operating Mode : Client

VTP Domain Name : CCNP

VTP Pruning Mode : Disabled

VTP V2 Mode : Disabled

VTP Traps Generation : Disabled

MD5 digest : 0x1B 0xA3 0x02 0x27 0xF9 0x0D 0x27 0xF1

Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00

sh vlan brief

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, Fa0/24

Gig1/1, Gig1/2

1002 fddi-default active

1003 token-ring-default active

1004 fddinet-default active

1005 trnet-default active

gwes · ‎07-13-2013

You must use trunk ports in order to get VTP going.

interface fa0/1

switchport trunk encapsulation dot1q

swithport mode trunk

end

It could be that after you configure these trunk ports, no vtp updates are getting through. Create a dummy vlan on the VTP master switch to see if it works.

vlan 999

name dummy-vlan

exit

View solution in original post

Reza Sharifi · ‎07-13-2013

Can you post the config for the interface connecting the 2 switches together?

Also, are you using the same VTP password for both switches?

can you post sh run and sh ip int bri from both switches?

HTH

Dinesh Kumar Mariappan · ‎07-13-2013

Switch 1

SW1#sh running-config

Building configuration...

Current configuration : 1034 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname SW1

!

spanning-tree mode pvst

!

interface FastEthernet0/1

!

interface FastEthernet0/2

!

interface FastEthernet0/3

!

interface FastEthernet0/4

!

interface FastEthernet0/5

!

interface FastEthernet0/6

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet1/1

!

interface GigabitEthernet1/2

!

interface Vlan1

no ip address

shutdown

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

end

SW1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

SW1(config)#int

SW1(config)#interface f0/1

SW1(config-if)#no sh

SW1(config-if)#no shutdown

SW1(config-if)#

SW1(config-if)#^Z

SW1#

%SYS-5-CONFIG_I: Configured from console by console

SW1#

SW1#sh run

SW1#sh running-config

Building configuration...

Current configuration : 1034 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname SW1

!

spanning-tree mode pvst

!

interface FastEthernet0/1

!

interface FastEthernet0/2

!

interface FastEthernet0/3

!

interface FastEthernet0/4

!

interface FastEthernet0/5

!

interface FastEthernet0/6

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet1/1

!

interface GigabitEthernet1/2

!

interface Vlan1

no ip address

shutdown

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

end

Switch 2

sh run

SW2#sh running-config

Building configuration...

Current configuration : 1034 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname SW2

!

spanning-tree mode pvst

!

interface FastEthernet0/1

!

interface FastEthernet0/2

!

interface FastEthernet0/3

!

interface FastEthernet0/4

!

interface FastEthernet0/5

!

interface FastEthernet0/6

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet1/1

!

interface GigabitEthernet1/2

!

interface Vlan1

no ip address

shutdown

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

end

both are connected interface fa0/1

SW1#sh interfaces fa0/1

FastEthernet0/1 is up, line protocol is up (connected)

Hardware is Lance, address is 0002.1765.8601 (bia 0002.1765.8601)

BW 100000 Kbit, DLY 1000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s

input flow-control is off, output flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:08, output 00:00:05, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue :0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

956 packets input, 193351 bytes, 0 no buffer

Received 956 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

2357 packets output, 263570 bytes, 0 underruns

0 output errors, 0 collisions, 10 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

SW2#sh interfaces fa0/1

FastEthernet0/1 is up, line protocol is up (connected)

Hardware is Lance, address is 0090.0c69.3301 (bia 0090.0c69.3301)

BW 100000 Kbit, DLY 1000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s

input flow-control is off, output flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:08, output 00:00:05, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue :0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

956 packets input, 193351 bytes, 0 no buffer

Received 956 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

2357 packets output, 263570 bytes, 0 underruns

0 output errors, 0 collisions, 10 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I am not using VTP passwords..

SW1#sh ip interface brief

Interface IP-Address OK? Method Status Protocol

FastEthernet0/1 unassigned YES manual up up

SW2#sh ip interface brief

Interface IP-Address OK? Method Status Protocol

FastEthernet0/1 unassigned YES manual up up

gwes · ‎07-13-2013

You must use trunk ports in order to get VTP going.

interface fa0/1

switchport trunk encapsulation dot1q

swithport mode trunk

end

It could be that after you configure these trunk ports, no vtp updates are getting through. Create a dummy vlan on the VTP master switch to see if it works.

vlan 999

name dummy-vlan

exit

Dinesh Kumar Mariappan · ‎07-13-2013

ya thank you.. I forgot to do that.... its working now..

mytihom · ‎05-11-2019

Hi,

So, do we need to make trunk ports on all the switches. that is on server and on clients both?

Thanks in advance.

DariusLee7571 · ‎10-24-2019

Hi,

I took a detour during a VTP lab and learned to make sure to do a NO VTP PASSWORD command on the clients and server.....I learned even when you change the Domain name the password sticks. Also changed all trunking ports to DYNAMIC DESIRABLE

Hope this helps someone.