[c-nsp] Re: Vlans and catalyst 2950

matthew zeier mrz at intelenet.net
Wed Feb 9 13:45:04 EST 2005


My non-scientific method was to replace all the 2950s with 2970 running the 
EI image.  Though I also never saw your exact problem since I wasn't running 
VTP on the 2950s and had to manually add Vlans anways.


----- Original Message ----- 
From: "Alban Dani" <albcisco at gmail.com>
To: <mrz at intelenet.net>
Cc: <cisco-nsp at puck.nether.net>
Sent: Tuesday, February 08, 2005 5:58 PM
Subject: Vlans and catalyst 2950


> Hello Matthew,
>
> I also am having a very wierd issue with vlans and 2950-s.
>
> We are running pst+.
> We have a 6509 in the core and everytime we try to get a new vlan
> passed through a chain  of switches( all connected via dot1q trunks)
> that has a 2950 in it, it does not work. The only workaround we found
> so far is to go to a port on the given 2950 , set the port on the
> requried vlan and connect a machine to it and through some traffic.
> That makes the 2950 aware of  that vlan.
>
> If this was not enough, if the vlan in question does not see traffic
> for a couple of days the 2950 totally forgets about it.
>
> I am wondering if you ever found a solution to your problem and if so
> what was it?
>
> I have upgraded to the latest IOS but it did not help.
>
> thanks,
>
> Alban
> 



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