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Bi-directionally rate limiting Customer Facing GbE Interfaces on the GSR

With the GSR platform and 3 Port GbE line card, is anyone aware of a way to provide INBOUND/OUTBOUND "tiering" of these interfaces? While configuring CAR (rate-lilmite IN/OUT) is still a valid configuration command for these interfaces, I have been told that Engine 2 cards will not support CAR. Can anyone comment?

Regards, Andrew

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Re: Bi-directionally rate limiting Customer Facing GbE Interface

Hi Andrew,

The Engine2 LC supports PIRC ( per interface rate control ) on certain versions where CAR is not supported. You can configure PIRC using a 'rate-limit input' command. However it is only applicable on IP and not on MPLS.

Engine 2-based line cards cannot support simultaneously all the Cisco IOS software features. To enable certain features on the Engine 2 line card, several PSA microcode bundles are customized. For instance, ACLs cannot co-exist with per interface rate control (PIRC) or CAR.

Here's a good doc on Managing Outbound Interface Oversubscription

http://www.cisco.com/warp/public/63/ignored_nomem_18003.html#outinterover

Hope this helps.

Oscar

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