[c-nsp] Tx Queue for 7609 WS67xx cards

Jon Lewis jlewis at lewis.org
Fri Aug 30 11:11:59 EDT 2013


On Fri, 30 Aug 2013, Victor Lyapunov wrote:

> Hello all
>
> Got a question about queuing functionality in WS67xx cards. We have a
> typical 7609 setup with TenG uplink and GigE downlink interfaces.
>
> During the day we see an increase in packet drops on the GigE downlink
> interfaces. The average bandwidth is kept around 750Mbps but I suppose
> short bursts may result in dropped packets. Is there any way to improve
> this behavior? (e.g increase output buffer?)

Have you touched ip spd queue max-threshold and ip spd queue 
min-threshold?  Some investigating I was doing recently suggested you 
might want to greatly increase these from the defaults.

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  Jon Lewis, MCP :)           |  I route
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