MPLS over Port-Channel

francisco_1 · ‎06-10-2009

Is it recommended? increasing the MTU on the port-channel will work? Pls provide cico documentation if poss..

cheers

Giuseppe Larosa · ‎06-10-2009

Hello Francisco,

if you mean a L3 port channel supporting IPv4 and MPLS I personally prefer to use parallel indipendent L3 links.

The load balancing on L3 links should be based on the more internal MPLS label.

Increasing the mtu, mpls mtu of port-channel interface (and may be of member links) is needed.

If you mean increasing the MTU on a L2 port-channel connecting two switches this is needed too to support MPLS VPN traffic.

In this case of L2 port-channel load balancing could be based on the external label that points to remote PE (these are generally less variable then inner labels)

Hope to help

Giuseppe

Edison Ortiz · ‎06-10-2009

Francisco,

Not sure what you mean about 'is it recommended' - perhaps, you meant 'is it supported?'

Yes, it is supported.

http://www.cisco.com/en/US/docs/routers/7300/maintain_and_operate_guides/7304_maintain_and_operate_guides/7304eth.html

HTH,

__

Edison.

francisco_1 · ‎06-10-2009

Thanks guys for your comments. To clarify my question sorry what i meant was is it supported to have LDP enable on L3 port-channel and the increase of MTU for the labels on the port-channel.I have a couple of 6509's as distribution and core switches with L3 port-channels between the switches. i would like to enable mpls on the L3 port-channel and increase the MTU for the labels.