> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Ross S. W. Walker
> Sent: Tuesday, January 29, 2008 17:38
> To: CentOS mailing list
> Subject: RE: Network routes
>
> Jason Pyeron wrote:
> >
> > I am unable to ping NE.TW.RKB.IP1 from an outside network.
> > Other machines
> > which do not have access or routes for NET.WOR.KA.0 respond
> just fine.
> >
> > How do I get it to respond on both NET.WOR.KA.0 and
> > NE.TW.RKB.0 given all
> > default traffic should go through NET.WOR.KA.1 unless it is
> > in reply to
> > traffic from NE.TW.RKB.1 or there is an outage.
> >
> > [root@host20 ~]# route -n
> > Kernel IP routing table
> > Destination Gateway Genmask Flags Metric
> > Ref Use
> > Iface
> > NET.WOR.KA.0 0.0.0.0 255.255.255.0 U 0
> > 0 0 eth1
> > 192.168.1.0 0.0.0.0 255.255.255.0 U 0
> > 0 0 eth0
> > NE.TW.RKB.0 0.0.0.0 255.255.255.0 U 0
> > 0 0 eth0
> > 169.254.0.0 0.0.0.0 255.255.0.0 U 0
> > 0 0 eth1
> > 0.0.0.0 NET.WOR.KA.1 0.0.0.0 UG 0
> > 0 0 eth1
> > 0.0.0.0 NE.TW.RKB.1 0.0.0.0 UG 20
> > 0 0 eth0
> >
> > [root@host20 ~]# ifconfig
> > eth0 Link encap:Ethernet HWaddr 00:17:31:0F:04:AE
> > inet addr:NE.TW.RKB.IP1 Bcast:NE.TW.RKB.255
> > Mask:255.255.255.0
> > eth0:pn Link encap:Ethernet HWaddr 00:17:31:0F:04:AE
> > inet addr:192.168.1.20 Bcast:192.168.1.255
> > Mask:255.255.255.0
> > eth1 Link encap:Ethernet HWaddr 00:01:03:E9:42:D0
> > inet addr:NET.WOR.KA.IP2 Bcast:NET.WOR.KA.255
> > Mask:255.255.255.0
> > lo Link encap:Local Loopback
> > inet addr:127.0.0.1 Mask:255.0.0.0
> >
>
> You can have only 1 default route.
>
> You can use RIP or some other routing protocol to
> advertise defualt routes to the host from the
> gateways based upon route availability or weight,
> or you can deploy reverse NAT'ing on the gateways
> so external IPs will be masqueraded as the
> internal IP of the gateway and thus be routed to
> the appropriate gateway based on which IP they
> arrived on.
>
> -Ross
>
But I have 2 physical network cards, on 2 different networks. Should they
not both have default routes?
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- -
- Jason Pyeron PD Inc. http://www.pdinc.us -
- Sr. Consultant 10 West 24th Street #100 -
- +1 (443) 269-1555 x333 Baltimore, Maryland 21218 -
- -
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