[120024] in North American Network Operators' Group
Re: Linux shaping packet loss
daemon@ATHENA.MIT.EDU (Bret Clark)
Tue Dec 8 09:44:02 2009
Date: Tue, 08 Dec 2009 09:43:19 -0500
From: Bret Clark <bclark@spectraaccess.com>
To: Chris <chris@ghostbusters.co.uk>
In-Reply-To: <c8a7026b0912080513w3fbc7bbewb8cd41f85cdc9021@mail.gmail.com>
Cc: nanog list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Won't say I'm an expert with TC, but anytime I see packet loss on an
interface I always check the interface itself...10% packet loss is
pretty much what you would get if there was a duplex problem. I always
try to hard set my interfaces on both the Linux machines and Switches.
Bret
Chris wrote:
> Hi All,
>
> It would be appreciated if anyone using TC on Linux for shaping could please
> help with an intermittent problem on an egress interface.
>
> I'm seeing about ten per cent of packet loss for all classes at seemingly
> quiet times and random parts of the day using about forty classes and
> 250Mbps. I've isolated it to the egress HTB qdisc.
>
> Any TC experts out there have a spare minute please ? Any thoughts on the
> RED qdisc ?
>
> Thanks very much,
>
> Chris
>
