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

[Frank Bulk]

I believe that each VLAN on the 2950 (active or not) can have multiple IP
addresses, by making them secondary.  

Frank

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Marco van den
Bovenkamp
Sent: Saturday, July 25, 2009 1:28 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Dumb question of the day (on vlans)

Security Admin (NetSec) wrote:

> 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?

You don't, at least not like that. A 2950 is a pure L2 switch, and it 
can have only one IP address at the same time, purely for management 
purposes. So as soon as you assign an IP adress to a VLAN interface (the 
'int vlan xxx' command), the other one will go admin down.

You create L2 VLANs with the 'vlan xxx' command.

		Regards,

			Marco.
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