VTP issue

[hamza-ali]

Hi All, i have an vtp server switch i want that my client switch get an vlan from server switch..but client switch unable to get an vlans from server...


please find server switch trunk config:

description "3850_Switch_VTP"
switchport trunk encapsulation dot1q
switchport mode trunk
end

please find client switch trunk config: (Configuration not excepted on cisco switch  interface: switchport trunk encapsulation dot1q)
switchport mode trunk
end

[pieterh]

Start with " show CDP neighbor" 

The output shows the configured vtp domain, and management vlan  wich should match both ends 

Next check " show vtp status"

If different,  configure vtp domain. vtp version. vtp password. Then 

[Cristian Matei]

Hi,

   Please provide following output of following commands from both switches: "show vlan brief" , "show vtp status" , "show vtp password" , "show vtp interface" , "show vtp devices" , "show interfaces trunk" , "show cdp neighbors".

   Are switches directly connected or are there other intermediate switches in the path?

Thanks,

Cristian.

[paul driver]

Hello
make sure the switches are running the same vtp domain/version
disable dynamic pruning (caution if on live production network)

your Trks are allowing all vlans
delete /recreate a vlan and then check the vtp D/B  of the switches thereafter 

Note:
mismatched vtp domains:
defined domain1 & null domain = vtp propagation should work 
defined donain1 & defined domain2 = vtp propagation WONT work

[balaji.bandi]

i take this as 3850 as VTP server, what model of switch is Client ?

can you post more information on client and server side configuration in related to VTP

good reference if you like to refer :

https://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/98154-conf-vlan.html#toc-hId-2098124139

[pieterh]

>>> (Configuration not acccepted on cisco switch  interface: switchport trunk encapsulation dot1q) <<<
this does not need to be a problem, depends on switch model and IOS version
some recent models support encapsulation dot1q only  (and no encapsulation ISL anymore)
so those switches do not need (c.q. do not allow ) for this in the configuration

of course "switchport mode trunk" is needed on both sides of the link