[c-nsp] Dumb question of the day (on vlans)

[Jeff Kell]

You have a layer-2 2950 switch, and you're trying to add multiple SVIs 
to it.  A layer-2 switch can only have one active SVI which corresponds 
to the management vlan/address.  Consequently, you can only have one 
active at a time, and it will keep the others shutdown.

To add vlans to the switch, just use the "vlan" commands.  You don't 
need SVIs for layer-2 vlans.  If you DO want to route multiple vlans, 
you'll need a layer-3 switch (e.g., a 3550).

Jeff

Security Admin (NetSec) wrote:
> If this is the wrong question for this newsgroup my apologies
>
> Been having trouble setting up vlans on a Cisco 2950 switch.  I add one using the typical method via CLI:
>
> Int vlan x
> Ip address 192.xxx.yyy.zzz 255.255.255.240
> No ip route-cache
> No shut
>
> The CLI screen notes that the vlan is up. As soon as I add another vlan (vlan y) vlan y will come up but vlan x will administratively go down.  This process is repeated each time I add a vlan so that only one vlan is up at any one time, which is the last vlan created.  Please note that I have vlan 1 shutdown and it is not used.
>
> Question is how do I keep all my vlans up simultaneously?