[c-nsp] Cisco 2960G, 255 VLANs

Lukas Tribus luky-37 at hotmail.com
Sat Jun 13 07:16:14 EDT 2015

Hi Tom,

> Hi everyone.
> Simple question I hope.
> 2960G datasheet says it supports 255 active VLANs.
> I have a situation where I would like to (potentially) trunk more than
> 255 VLANs (lab environment.)
> Am I right in thinking that the switches VLAN database is limited to
> 255 entries, but if I want to trunk more than that through the switch
> at any point in time, regardless of whats configured in the VLAN
> database, then this would be fine?

No. If the vlan is not in the database, in won't forward frames, it doesn't
matter if ingress and egress ports are trunks.

The only thing you can do is to dot1q-tunnel them, but probably not on
a 2960G.



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