07-23-2007 07:41 AM - edited 03-05-2019 05:26 PM
hi,
i have a switch 2950.
i create 2 interface vlan (1 and 2).
the problem is when i do "conf t" , "interface vlan 1), "no shut" the int vlan1 is up but vlan2 is down.
and the same with int vlan2.
i dont know what's the problem.
why they can not be up in the same time.
07-23-2007 07:45 AM
You are creating two Layer3 interfaces and this switch is only Layer2, hence it's a limitation in the hardware.
However, you are allowed to create multiple Layer2 Vlans but in order to perform inter-vlan routing, you need a Layer3 device (router or switch) connected to both Vlans.
07-23-2007 08:11 AM
but the switch accept ip address for vlan interfaces.
07-23-2007 08:13 AM
They do but those IP addresses will never become active if the interface is down/down.
That's how the hardware limit its use. Only one Layer3 up/up at the time.
07-23-2007 08:16 AM
thanks in understand now.
but there is no solution without change hardware?
07-23-2007 08:26 AM
No solution without changing the hardware, that's correct.
If you need to play with inter-vlan routing at the switch level, the cheapest switch would be a 3560 compact switch (8 port model).
http://www.cisco.com/en/US/products/hw/switches/ps5528/index.html
and here is the current Cisco switch line
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: