No VTP update received on WS-C3508G-XL-EN from WS-C3508G-XL-EN

[Viconsul]

Hello all,

Recently, I added a new vlan to our existing network, making the total number of vlan 28, everything works okay except on one switch (model WS-C3508G-XL-EN ).
It refused to get the new vlan update and it is stuck to 27 vlans.
I then made the following checks to find out what was wrong.
I checked that it is part of our vtp domain.
I checked and reset the vtp password.
I checked to ensure switch was setup as a client.
I checked that it was running same vtp version.
I checked the configuration revision number was not higher than the vtp server (model WS-C3750G-12S ).
VTP version 2 mode is disabled across the entire network.
I moved the switch to transparent mode and back to client
Still no joy so I deleted the vlan.dat and moved the switch to transparent mode and added new vlan manually and all works okay.
But I need to get this working as a client rather than manually updating the vlan changes.
Any idea what could be wrong?

Many thanks

Viconsul

 

[VinceWhirlwind]

The only oddity I've come across before with 3750 v. 3500 was that a mis-matched native VLAN would cause the 3500 to disable its uplink port.

Apart from that, I seem to recall that sometimes VLANs didn't seem to "exist" unless I had an access port put into that VLAN and then a live device plugged into that port.

You don't have any IP connectivity issues for the switch's management address or any of the devices hanging off it do you?

How about a
"show run int g4/0/48"
"sh run int g0/7

 

[Viconsul]

Below is the running config of the two ports.


C3750G-12S#sh run int gi4/0/48
Building configuration...

Current configuration : 275 bytes
!
interface GigabitEthernet4/0/48
description Link to C3508G-XL G0/7
switchport trunk encapsulation dot1q
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
queue-set 2
mls qos trust cos
auto qos voip trust
end

C3750G-12S#




C3508G-XL#sh run int g0/7
Building configuration...

Current configuration:
!
interface GigabitEthernet0/7
description Link to C3750G Port Gi4/0/48
switchport trunk encapsulation dot1q
switchport mode trunk
end

C3508G-XL#

 

[rroblez]

maybe the vlan needs to be added manually to the trunk?