[c-nsp] IP multicast traffic overwhelms switches

Łukasz Bromirski lukasz at bromirski.net
Fri Jul 10 16:00:00 EDT 2009


On 2009-07-10 18:12, victor wrote:

> We are getting ready a residential triple-play network for the launch.
> As part of my job I'm conducting various tests on its performance,
> delays, etc before we go into production. Today was the multicast time
> and testing it I got very discouraging results. Under very moderate load
> of 15 IPTV streams (each approximately 1-1,5Mbps) the cpu gauge on the
> core C7604 increased by 15%

What's the software version on the 7604, Sup model and LCs used?

Can you show output of 'show platform hardware capacity' for the
box and 'sh proc cpu sorted'. Also 'sh ip pim int x/y count'
where the ports that multicast traffic is flowing through?

 > but on the distribution C4924 hit 50% from zero!

Clearly there's a problem with moving traffic in hardware.

Can you also drop a 'show ip mroute count' from both boxes?

-- 
"Everything will be okay in the end. |                  Łukasz Bromirski
  If it's not okay, it's not the end. |       http://lukasz.bromirski.net


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