nanog mailing list archives
Re: Linux shaping packet loss
From: Joe Abley <jabley () hopcount ca>
Date: Tue, 8 Dec 2009 15:13:48 +0000
On 2009-12-08, at 15:01, sthaug () nethelp no wrote:
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.Used to set everything hard five years ago. Nowadays auto works just fine most of the time.
I find there is a lot of hard-coded wisdom that hard-coded speed duplex are the way to avoid pain. The last time I saw anybody do a modern survey of switches, routers and hosts, however, it seemed like the early interop problems with autoneg on FE really don't exist today, and on balance there are probably more duplex problems caused by hard-configured ports that are poorly maintained in the heat of battle than there are because autoneg is flaky. I've also heard people say that whatever you think about autoneg in Fast Ethernet, on Gigabit and 10GE interfaces it's pretty much never the right idea to turn autoneg off. I am profoundly ignorant of the details of layer-2. It'd be nice to have more than vague rhetoric to guide me when configuring interfaces. What reliable guidance exists for this stuff? Joe
Current thread:
- Linux shaping packet loss Chris (Dec 08)
- Re: Linux shaping packet loss Bret Clark (Dec 08)
- Re: Linux shaping packet loss sthaug (Dec 08)
- Re: Linux shaping packet loss Joe Abley (Dec 08)
- RE: Linux shaping packet loss Matlock, Kenneth L (Dec 08)
- Re: Linux shaping packet loss sthaug (Dec 08)
- Re: Linux shaping packet loss Scott Howard (Dec 08)
- Re: Linux shaping packet loss Tony Finch (Dec 08)
- Re: Linux shaping packet loss Nathan Ward (Dec 08)
- RE: Linux shaping packet loss Keith Medcalf (Dec 10)
- Re: Linux shaping packet loss sthaug (Dec 08)
- Re: Linux shaping packet loss Brielle Bruns (Dec 08)
- Re: Linux shaping packet loss Michael Holstein (Dec 08)
- Re: Linux shaping packet loss Bret Clark (Dec 08)
- Re: Linux shaping packet loss Chris (Dec 08)
- Re: Linux shaping packet loss Simon Horman (Dec 08)