topic Re: default gateway was removed in Operating System - Linux

default gateway was removed

Wilfred Chau_1 — Wed, 01 Aug 2007 15:35:03 GMT

Hi
We had an network issue on eth0 network for a day or two. Then we discover the gateway of eth1 was removed from the routing table.

The driver for eth1 is tg3. And I am running
Red Hat Linux Advanced Server release 2.1AS

One observation, whenever eth0 became unavailable, kernel would log eth1 is up in /var/log/messages.

Have any of you come across this?

thanks.

Re: default gateway was removed

skt_skt — Wed, 01 Aug 2007 21:31:14 GMT

"We had an network issue on eth0 network for a day or two. Then we discover the gateway of eth1 was removed from the routing table"

what was the issue?i hope your default gateway is configured on eth1.

"The driver for eth1 is tg3. And I am running Red Hat Linux Advanced Server release 2.1AS"

tg3 driver on 2.1 does not make any diffrence.What is the driver version?what kernel do you have?

"One observation, whenever eth0 became unavailable, kernel would log eth1 is up in /var/log/messages"

Was eth1 not really up till then?or just logs a message like that

Re: default gateway was removed

Vitaly Karasik_1 — Thu, 02 Aug 2007 01:57:59 GMT

can you send us:

1) ifconfig -a output
2) /etc/sysconfig/network
3) /etc/sysconfig/network-scripts/ifcfg-ethX
4) netstat -rn

Re: default gateway was removed

Van den Broeck Tijl — Thu, 02 Aug 2007 04:38:58 GMT

additional to the previous logs Vitaly mentioned, please also attach /etc/sysconfig/network/ifroute-ethX
/etc/sysconfig/network/routes

If they happened to exist (could also be in network-scripts, not sure, don't have access to a RHES/AS 2.x to check).