[f-nsp] XMR 10G speed issue

[Rens Ariens - YISP]

Just to add: cpu and lp-cpu usage are < 5%.

Regards,
Rens Ariens
Yisp

On 01/23/2014 03:40 PM, Rens Ariens - YISP wrote:
> Hello all,
>
> We replaced one of our Brocade RX devices with a Brocade XMR. Beside 
> some small syntax changes we copied its config (some basic BGP and 
> OSPF) to the XMR. We now see the issue that from 6+ Gbit on a 10GE 
> port single-session transfers (simple wget) slow down below 1GE 
> speeds. The port can and will reach 8-9 Gbit without packet loss, but 
> single-session wgets will slow down further. We currently have to keep 
> them below 6.5Gbit to prevent any possible impact.
>
> Note: this is in a LAG, our non-LAG ports are currently not pushing 
> enough traffic to test this quickly.
>
> Anyone an idea what we are missing / forgetting?
>
> We tried:
>
> - Downgrade / Upgrade software (from 5.5d to 5.4e and 5.6a)
> - Shutdown 1 switch fabric (tried both options)
> - Switchover to standby management
> - Single port new lag on unused 10G module
>
> Total amount of traffic has no impact, when removing 2 uplinks from 
> 30G LAG early in the morning we also see this issue.
>
> Thanks in advance.
>
> Regards,
> Rens Ariens
> Yisp
>
>
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