wrong default route

[Thomas Fess]

What everyone just wrote is totally correct!

run "route add default gw xxx.xxx.xxx.xxx eth1"  for your REAL default gw

and do what I wrote below for additional routes

here is an example of my route table:

[root at myserver~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.xxx.32.0     *               255.255.255.0   U     0      0        0 eth1
172.xxx.30.0     Backup-Default- 255.255.255.0   UG    0      0        0 eth1
172.xxx.31.0     Backup-Default- 255.255.255.0   UG    0      0        0 eth1
192.xxx.xxx.0    *               255.255.255.0   U     0      0        0 eth0
192.254.0.0     *               255.255.0.0     U     0      0        0 eth1
default         DB-Dev-DefaultG 0.0.0.0         UG    0      0        0 eth0


--- On Tue, 7/8/08, Thomas Fess <dfezz1 at yahoo.com> wrote:

> From: Thomas Fess <dfezz1 at yahoo.com>
> Subject: Re: wrong default route
> To: "General Red Hat Linux discussion list" <redhat-list at redhat.com>
> Date: Tuesday, July 8, 2008, 10:54 AM
> Yes, modify the /etc/sysconfig/network  with the actual
> default you want and you CAN add the GATEWAY=whatever here
> on the actual production NIC = eth1 if I am reading this
> correctly and then remove the GATEWAY=WRONG-IPS from ALL of
> the other NIC eth? "service network restart" and
> you should be in business.  happenes to me alot, we are
> building 100+ servers and we have backup ip's and LOMs
> etc.  If you need to access them and you can't without
> using the GATEWAY... add a regular route  to the NIC
> config.  example route-eth0 inside that file use some like
> the following:
> 
> Using 172.xxx.32.1 as your main gateway on that NIC to
> access you other networks from that IP/NIC whatever???
> 
> Notice the GATEWAY0, NETMASK0, ADDRESS0 change for each
> subnet I am trying to access, but my gateway IP stays the
> same, I am using it to access different networks. 
> 
> ADDRESS0
> ADDRESS1
> ADDRESS2
> ADDRESS3  if needed etc
> 
> 
> 
> ####################################
> 
> [root at dlxkrc2db5 ~]# cat
> /etc/sysconfig/network-scripts/route-eth1
> GATEWAY0=172.xxx.32.1
> NETMASK0=255.255.255.0
> ADDRESS0=172.xxx.32.0
> 
> GATEWAY1=172.xxx.32.1
> NETMASK1=255.255.255.0
> ADDRESS1=172.xxx.31.0
> 
> GATEWAY2=172.xxx.32.1
> NETMASK2=255.255.255.0
> ADDRESS2=172.xxx.30.0
> 
> #######################################################
> 
> 
> 
> --- On Tue, 7/8/08, Sir June <sir_june at yahoo.com>
> wrote:
> 
> > From: Sir June <sir_june at yahoo.com>
> > Subject: wrong default route
> > To: redhat-list at redhat.com
> > Date: Tuesday, July 8, 2008, 10:30 AM
> > 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 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"
> > 
> > 
> >       
> > 
> > -- 
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>       
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