topic eth down Intermittent and up in secs ? in Operating System - Linux

eth down Intermittent and up in secs ?

AA786 — Thu, 28 Aug 2008 05:58:59 GMT

eth down Intermittent and up in secs ?

Why its happening ?

Aug 28 12:49:18 noki kernel: e1000: eth5: e1000_watchdog:
> NIC Link is Down Aug 28 12:49:18 noki kernel: bonding:
> bond1: link status definitely down for interface eth5,
> disabling it Aug 28 12:49:18 noki kernel: e1000: eth5:
> e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex Aug 28
> 12:49:18 noki kernel: e1000: eth5: e1000_watchdog: 10/100
> speed: disabling TSO Aug 28 12:49:18 noki kernel:
> bonding: bond1: link status definitely up for interface eth5.

Re: eth down Intermittent and up in secs ?

Ivan Ferreira — Thu, 28 Aug 2008 10:08:02 GMT

Try disabling the autonegotiation at the network switch.

Re: eth down Intermittent and up in secs ?

Steven E. Protter — Thu, 28 Aug 2008 11:16:43 GMT

Shalom,

If the network cards are e1000 then autonegotiate is the way to go on the switch.

Setting it to a particular speed can cause this problem.

Most of the time this is either a NIC card ready to fail or creative setting in the network swtich port.

SEP

Re: eth down Intermittent and up in secs ?

AA786 — Wed, 01 Oct 2008 10:41:15 GMT

In this case
wat ll be the setting in NIC card and in switch side

auto negotiation ON ?or need to put it fix

Re: eth down Intermittent and up in secs ?

Matti_Kurkela — Thu, 02 Oct 2008 11:38:45 GMT

Did this work OK before? Or was this a new installation?

You have a gigabit NIC but it's indicating only 100Mbps link. What is on the other end of the cable?

An intermittent connection could be caused by a bad cable: check the cable and the connectors for damage and dirt.

MK