VTP Issue

From: naveen M S (navin.ms@gmail.com)
Date: Fri Feb 27 2009 - 04:55:03 ARST


Folks,

Here is my scenario. Seems trivial but can't get it to work.

SW1-------SW4-------SW2

SW1 : VTP domain = cisco, Mode = server
SW2 : VTP domain = cisco, Mode = client
SW4 : VTP domain = iewb, Mode = server

The 802.1q trunk links are established b/n the 3 switches and vlan 1 is
native on them.

Changes to vlan in SW1 are NOT propogated to SW2. What could be the problem
?

*SW1:*
interface GigabitEthernet1/0/20
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport nonegotiate

*SW4:*
interface GigabitEthernet1/0/14
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/16
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport nonegotiate

*SW2:*
interface GigabitEthernet1/0/19
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport nonegotiate

Rack1SW1# sh int trunk

Port Mode Encapsulation Status Native vlan
Gi1/0/20 on 802.1q trunking 1

Rack1SW4# show int trunk

Port Mode Encapsulation Status Native vlan
Gi1/0/14 on 802.1q trunking 1
Gi1/0/16 on 802.1q trunking 1

Rack1SW2# sh int trunk

Port Mode Encapsulation Status Native vlan
Gi1/0/19 on 802.1q trunking 1

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