wrong default route

wrong default route

[Jake Ravenwood]

I have a server out there that i remotely manage.  i had a downtime the other day when we
restarted network services. then we found a wrong default route is laoded on the server
upon restart. i have the configs below. The defaultroute should be 
GATEWAY=192.168.65.142  but it loaded GATEWAY=10.2.1.14 upon restart.
Could it be the sequence the interfaces are enabled from eth0 then eth1 then eth5, the
last interface activated its own gateway as the default?

Should i delete the gateway on eth0 and eth5 such that it would make sure only the
defaultgateway on eth1 is loaded upon restart?

i just can't restart network services and see what happens, the server is in production
and it takes a lot of authorization before i can restart it. 

thanks,
june


/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=no
BOOTPROTO=static
IPADDR=10.11.13.150
NETMASK=255.255.255.192
GATEWAY=10.11.13.129
HOSTNAME=web2003
HWADDR=00:19:BB:AB:CD:EF
ETHTOOL_OPTS="speed
100 duplex full autoneg off"


/etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
HWADDR=00:19:BB:AA:DD:CC
ONBOOT=yes
TYPE=Ethernet
IPADDR=192.168.65.131
NETMASK=255.255.255.240
GATEWAY=192.168.65.142
HOSTNAME=web2003.domain.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"


/etc/sysconfig/network-scripts/ifcfg-eth5
DEVICE=eth5
HWADDR=00:18:FE:BB:CC:DD
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=static
IPADDR=10.2.1.1
NETMASK=255.255.255.240
GATEWAY=10.2.1.14
HOSTNAME=web2003.domain.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"



      

Re: wrong default route

[Jake Ravenwood]

thanks for the answers. can you confirm that the should be default route eth1 was overwritten by eth5 gateway? 



      

Re: wrong default route

[Striker]

Quoting Jake Ravenwood <jakeravenwood@yahoo.com>: Jake Ravenwood once said:

> thanks for the answers. can you confirm that the should be default 
> route eth1 was overwritten by eth5 gateway?

Would those who have answered Jake, PLEASE respond to the list also,
for the benefit of all list members?

Thanks

>
>
>
>
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Re: wrong default route

[Yuri Csapo]

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Oops sorry Striker, this list has been quiet for so long I forgot my 
manners. Anyway my answer was:

"Hi Jake and welcome to the list. You only need one default gateway. I 
don't know why some distros do it like this and seem to encourage you to 
enter a gateway for each interface; my suggestion is to leave the 
GATEWAY entry blank for all entries except the actual one.

Yuri"



Striker wrote:
> Quoting Jake Ravenwood <jakeravenwood@yahoo.com>: Jake Ravenwood once said:
> 
>> thanks for the answers. can you confirm that the should be default 
>> route eth1 was overwritten by eth5 gateway?
> 
> Would those who have answered Jake, PLEASE respond to the list also,
> for the benefit of all list members?
> 
> Thanks
> 
>>
>>
>>
>>
>>
>> -- 
>> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
> 
> 
> 
> 
> -- 
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
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-- 
Yuri Csapo
Academic Computing & Networking
Colorado School of Mines
CT-256
Phone:  (303) 273-3503
Fax:      (303) 273-3475
Email:   ycsapo@mines.edu

Please use the following link to open a service request:
http://helpdesk.mines.edu
===========================================
With a PC, I always felt limited
by the software available.
On Unix, I am limited only by my knowledge.
--Peter J. Schoenster

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Re: wrong default route

[Ben Kevan]

On Tuesday 08 July 2008 08:43:48 am you wrote:
> Quoting Jake Ravenwood <jakeravenwood@yahoo.com>: Jake Ravenwood once said:
> > thanks for the answers. can you confirm that the should be default
> > route eth1 was overwritten by eth5 gateway?
>
> Would those who have answered Jake, PLEASE respond to the list also,
> for the benefit of all list members?
>
> Thanks

I was thinking the same thing, then I honestly thought Jake may have been 
talking to himself? 

Jake, can you forward the resolution email to the list, or the original author 
please re-reply to the list? It would be good to have in the thread. 

Re: wrong default route

[Striker]

Quoting Yuri Csapo <ycsapo@mines.edu>: Yuri Csapo once said:

>
> "Hi Jake and welcome to the list. You only need one default gateway. I
> don't know why some distros do it like this and seem to encourage you to
> enter a gateway for each interface; my suggestion is to leave the
> GATEWAY entry blank for all entries except the actual one.
>
> Yuri"

Thank you, Yuri. Your reply is exactly what I was thinking, but not 
being a networking guru, I hesitated to reply. Thanks for your answer.

Re: wrong default route

[Jake Ravenwood]

thank you for all answers and suggestions. I am modifying my network settings to only one GATEWAY defined.

-jake


--- On Tue, 7/8/08, Striker <jevb+admin@tuffmail.com> wrote:

> From: Striker <jevb+admin@tuffmail.com>
> Subject: Re: wrong default route
> To: linux-admin@vger.kernel.org
> Date: Tuesday, July 8, 2008, 4:15 PM
> Quoting Yuri Csapo <ycsapo@mines.edu>: Yuri Csapo once
> said:
> 
> >
> > "Hi Jake and welcome to the list. You only need
> one default gateway. I
> > don't know why some distros do it like this and
> seem to encourage you to
> > enter a gateway for each interface; my suggestion is
> to leave the
> > GATEWAY entry blank for all entries except the actual
> one.
> >
> > Yuri"
> 
> Thank you, Yuri. Your reply is exactly what I was thinking,
> but not 
> being a networking guru, I hesitated to reply. Thanks for
> your answer.
> 
> 
> 
> --
> To unsubscribe from this list: send the line
> "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at 
> http://vger.kernel.org/majordomo-info.html


      

Re: wrong default route

[Striker]

Quoting Jake Ravenwood <jakeravenwood@yahoo.com>: Jake Ravenwood once said:

>
> thank you for all answers and suggestions. I am modifying my network 
> settings to only one GATEWAY defined.
>
> -jake

That's great, Jake. Please let us know how it works out.


Cheers