[c-nsp] 6500 / 7600 output drops

[Phil Bedard]

Are the blades DFC-equipped?

Phil

On Apr 16, 2007, at 9:59 AM, Colin Whittaker wrote:

> Hi All,
>
> We are seeing some very serious with output drops on our 6500 / 7600
> platforms. We have sup720-3b with 6748 series lines cards, rj45 and  
> sfp.
>
> We have our IPTV headend connected via a single interface (int 1)   
> and is
> producing 400 - 450 Mbit/sec of multicast traffic.
> We have a downstream network connected to a second interface (int 2)
> that is watching all the tv channels at the same time and so all  
> groups
> are forwarded out int 2
> With just multicast traffic flowing between two interfaces  
> everthing works
> fine but as soon as we add any unicast traffic to the downstream  
> network
> which enters the 7600 via a different ingress interface we start to  
> see
> output drops on interface 2 and the associated problems in the video.
>
> The unicast traffic is about 200Mbit/sec so the total traffic on the
> link is 600Mbit/sec at 50kpps
>
> Disabling QOS / giving the video queue the highest priority don't seem
> to make a difference.
>
> Is there anything else I should try.
>
> Colin
> -- 
> Colin Whittaker						+353 (0)86 8211 965
> http://colin.netech.ie				   colin@(magnet|netech).ie
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