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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