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New Member

801.1q and L3 routing on the same port on Catalyst 3550-48

Is there a way to configur 802.1Q to extend one of the Vlans between two Catalyst 3550-48's and route between the other vlans? If so, can you point me to a configuration guideline, please.

Thank you.

  • Other Network Infrastructure Subjects
4 REPLIES
Cisco Employee

Re: 801.1q and L3 routing on the same port on Catalyst 3550-48

Hi,

Are you trying to configure dot1q trunking between two switches and then enable routing.

Here are few URL

http://www.cisco.com/warp/customer/473/88.html

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/1219ea1/3550scg/index.htm

New Member

Re: 801.1q and L3 routing on the same port on Catalyst 3550-48

Hello.

I would like to configure a port on the 3550 to do dot1q trunking "and" routing at the same time ... is this possible ?

Regards...

Cisco Employee

Re: 801.1q and L3 routing on the same port on Catalyst 3550-48

If you are thinking of routing by creating sub-interfaces as in a router, no you cannot do it. The 3550 does not support sub-interfaces on routed ports. However, you can configure an interface to just be a dot1q or an ISL trunk and configure layer 3 VLAN interfaces to route

New Member

Re: 801.1q and L3 routing on the same port on Catalyst 3550-48

Thank you for the response. Configuring dot1q and layer 3 VLAN interfaces to route was the info I needed. Again, thank you.

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