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New Member

4506/4515 and vlan interfaces / routing

I just got a new 4506 with a 4515 sup IV module.

I powered it up, and entered the following:

en

conf t

vlan 41

int vlan41

ip address 10.41.254.254 255.255.0.0

no shut

^z

^z

now, if I type

ping 10.41.254.254

I get no replies . . . what am I doing wrong?

When I session # into the router blade on a 4006 and create a vlan interface and give it an IP, I can ping it immediately . . . so I think I'm missing something here.

And when I try to make port channels, such as

int port-channel1.41

I get an error. It only allows me to make a port channel as a whole number, for example 41, but on the 4006 blade, I can make port-channels with 1.41, 1.100, 1.241, etc. etc.

I'm having a hard time finding documentation on the 4515 that explains how to make a pingable virtual lan interface, or that deals with port channels aside from the regular command reference info, but that doesn't help me much.

Any help would be appreciated!

2 REPLIES
Cisco Employee

Re: 4506/4515 and vlan interfaces / routing

Do you have any active members in VLAN 41? I guess not. Your layer 3 VLAN interface will be down/down with no members in the VLAN due to autostate(do a sh interface vlan 41 and check)

Unline a 4232-L3, you do not need port channels to configure inter VLAN routing. Refer to the following configuration guidelines

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12_1_19/config/index.htm

New Member

Re: 4506/4515 and vlan interfaces / routing

Well, I did read over the documentation there, but I found it sparse in terms of explaining really how ip addresses attached to vlan interfaces function. In any case, I figured I probably just needed to add ports to the vlans and connect the ports to something, so I threw in an LX/LH gbic, setup the trunk options on the port, then attached it to a 3524 switch, and it all started working. Now I have the routing setup, and the 4506 completely configured and ready to install as soon as the fiber is ready in the new building (hah).

I guess I should have tried that sooner, I just thought you could ping vlan interfaces without having any real hardware there to begin with, my mistake !

Thanks for the help, though, it was valuable!

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