From what I recall only 1 VLAN interface can be up at one time.  Think of 
the VLAN interfaces like the sc0 interface on a Cat5000 in that you can 
assign the VLAN and IP address of the switch itself for telnet/SNMP or 
other remote access to the switch.  The difference being you don't have to 
reconfigure the VLAN interfaces when you want to change them, just shut one 
down and no shut the one you want to work.
If you shutdown the VLAN 1 interface then do a no shut on the VLAN100 
interface it should come up, make sure you have console access or telnet 
access to the IP address you assigned to the VLAN 100 interface or the 
switch may become unreachable..

Also note that even though the VLAN 100 interface is down that VLAN 100 
would still exist and work for any ports that belong to that VLAN..

This is the same behavior as the Cat2900XL switches..

I hope this is what you were looking for...

Greg Myran
CCIE#5906


At 03:15 PM 6/5/2000 , Lance Hubbard wrote:

>Got a new toy to play with...a Cat 3548G.  Problem is, that while creating 
>a new VLAN (in this case I chose "VLAN 100"), The VLAN interface seems to 
>have a love affair with the shutdown/Administratively down state.  Anyone 
>had similar hurdles to clear?  (besides the obvious "no shutdown", it is 
>ineffective)
>
>Cheers,
>
>Lance
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