> -----Original Message----- > From: centos-bounces at centos.org > [mailto:centos-bounces at centos.org] On Behalf Of Ross S. W. Walker > Sent: Tuesday, January 29, 2008 17:38 > To: CentOS mailing list > Subject: RE: [CentOS] 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 at 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 at 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? -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Sr. Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, purge the message from your system and notify the sender immediately. Any other use of the email by you is prohibited.