[c-nsp] Cisco Nexus as MetroE switch?

Mark Tinka mark.tinka at seacom.mu
Sat Oct 17 00:51:38 EDT 2015



On 17/Oct/15 06:20, Mark Walters wrote:

>
> One big caveat in that setup: the N5ks consider MPLS-tagged traffic to be
> ³non-IP², for which the only etherchannel hashing is ³src-dst-mac².  So
> one link in a 4x10G etherchannel can get slammed while the others are
> idle.  We worked around by creating multiple(/parallel) layer3 peerings
> between some devices and manually setting the MAC address on the SVIs to
> influence the hashing decision.  Annoying.

I didn't think serious vendors built switches like that anymore.

Juniper's initial attempt at switching had the same problem (EX4200).
However, they fixed this in later releases.

Mark.


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