[f-nsp] XMR 10G speed issue

[Rens Ariens - YISP]

Niels,

We started with 2/3 SFMs, but we quickly upgraded this to 3/3 and have 
tested with all 2/3 combinations. All links show up.

We tested with ports on different 10G modules as well, so traffic 
manager on a module should be excluded as well i think.

Thanks for the suggestions, if you got any other idea's please let me know.

Rens


Niels Bakker schreef op 2/11/2014 2:24 AM:
> * rens at yisp.nl (Rens Ariens - YISP) [Thu 23 Jan 2014, 16:08 CET]:
>> 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?
>
> How many switch fabric modules do you have?  The symptoms sound as if 
> you have one too few.  You should see that in "show sfm-utilization 
> all".  And check that you have enough lanes up with "show sfm-links 
> all | i DOWN" although you hint that you rebooted a few times so that 
> should be ok.
>
>
>     -- Niels.
>