[c-nsp] Troubleshooting vtp pruning

[Ian Henderson]

On 10 Nov 2014, at 4:02 pm, Victor Sudakov <vas at mpeks.tomsk.su> wrote:
> Port        Vlans in spanning tree forwarding state and not pruned
> Gi0/1       1,3,10,20,22,24-28,30,32,34,36,200,308
> Gi0/2       1,3,10,20,22,24-28,30,32,34,36,200,308


VTP won’t prune because you have dual uplinks. It doesn’t know that they both go to the core layer. One could be a downstream switch as far as VTP is concerned.