topic Re: Linux Bonding in Operating System - Linux

Linux Bonding

V.Venkatesh_1 — Fri, 18 Jun 2004 15:59:07 GMT

Hi,

I have a Red Hat Enterprise Linux server version 3.1. Currently we have setup bonding with eth0,eth1 and eth2 as bond0. Somehow the system is working slow. Even normal "ll" command takes a while to respond. When I ruled out all other issues like CPU, Memory and disk, I checked the network with mii-tool command. The following is the output
# mii-tool
eth0: negotiated 100baseTx-FD, link ok
eth1: no autonegotiation, 100baseTx-HD, link ok
eth2: negotiated 100baseTx-FD, link ok
eth3: negotiated 100baseTx-FD, link ok
eth4: no link
Please note that eth1 is in half duplex. My question is will this cause the system to slow down or could be something else. Also please ignore eth4 as it is not connected. Your help will be appreciated.

Re: Linux Bonding

Thierry Poels_1 — Fri, 18 Jun 2004 16:52:59 GMT

Hi,

Half duplex for eth2 is OK when and only when the port of the switch it connects to is also configured for half duplex. Network traffic get disoriented if you start mixing up FD & HD between a network card and the network appliance it connects to.

But FD / FD will probably give better results.

regards,
Thierry.

Re: Linux Bonding

Vernon Brown_4 — Fri, 18 Jun 2004 18:17:48 GMT

Sometimes slow responses on network clients can be DNS. Make sure your /etc/resolv.conf points to your best name server.

Re: Linux Bonding

Jeroen Peereboom — Mon, 21 Jun 2004 01:03:49 GMT

To rule out bonding as the cause, can you disable it? Or just unplug eth1? How long do you have this problem?

If switching off bonding solves your problem then you'll have to take a closer look at your bonding config:
* What bonding mode do you have
* Which interfaces are connected to which switches?

JP.

Re: Linux Bonding

V.Venkatesh_1 — Mon, 21 Jun 2004 09:21:49 GMT

Actually I have planned to unplug the eth1 and see whether it works. I would like to thank all for having taken time to reply.

regards
V.Venkatesh

Re: Linux Bonding

Fred Ruffet — Mon, 21 Jun 2004 12:28:14 GMT

You're talking about ll... on a local FS ?

As long as you're using RH, you may already have something like sadc already collecting stats for you. I don't have a linux box here, but you may gain info on what your system have done with this. Look at "man sadc", and maybe someone here may help you with this.

Regards,

Fred