[c-nsp] Performance issue on link

Mikael Abrahamsson swmike at swm.pp.se
Mon Apr 1 23:37:43 EDT 2013

On Tue, 2 Apr 2013, CiscoNSP List wrote:

> class-map match-any MATCH_ANY match any
> policy-map 40MB_SHAPE
> class MATCH_ANY
>  shape average 41943040

Try lowering this to 35 megabit/s to make sure you avoid the policer your 
provider has in place.

When you do the tcp testing, do a packet capture on the servers and look 
for packet loss. Wireshark has excellent TCP analysis tools that can show 
you exactly what's going on, if the problem is maxed out TCP windows or if 
it's caused by TCP saw-toothing due to packet loss.

Mikael Abrahamsson    email: swmike at swm.pp.se

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