[f-nsp] XMR 10G speed issue

[Rens Ariens - YISP]

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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