[nsp] Performance of gsr engine-0 and -1 LC's with ACLs

[Dave O'Shea]

I ran into a problem with line card CPU going very
high when I hit about 120,000 packets/sec in either
direction on E0 linecards. Only E0 card I can generate
that traffic level on is 1xOC12....

Going to compiled (but still running in software)
ACL's did not make any measurable difference, still
bogged down when I hit 120k/95k PPS out/in. Compiled
ACL's also have a few caveats that are good to read.

On engine 1 linecards, I have not managed to hit a
traffic level that gave me any problems even with
traditional ACL's.

--- Steve Francis
<Steve.Francis at exchange-server.fastclick.com> wrote:
> Does anyone have any light to shed on the actual
> performance impacts of running ACL's on GSR engine-0
> and engine-1 line cards?
> Per cio, engine-1 LC's can support inbound ACL's in
> hardware with recent IOS releases. Does that mean no
> impact?
> WIth engine-0 LCs, what effective pps can be
> supported with inbound acls? in- and outbound acls?
> (Specifically on a 4 port OC3 POS card, only one
> port in use.)
>  
> Is there any info about the impacts, or do I just
> have to try it and see?
> Thanks
>  
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