This is mildly off topic since it has more to do with TCP/IP networking than with CentOS per se. However, at the risk of ruffling a few feathers I would like some advice on how to resolve the following routing problem: Given: dual homed host running CentOS-5.2 with eth0 = 2xx.yyy.zzz.23 eth1 = 192.168.219.1 and a Cisco gateway at 2xx.1xx.y7y.1 with the following networks: interface FastEthernet0/1 description connected to EthernetLAN ip address 10.0.0.1 255.0.0.0 secondary ip address 172.16.0.1 255.240.0.0 secondary ip address 192.168.71.1 255.255.255.0 secondary ip address 192.168.0.1 255.255.0.0 secondary ip address 2xx.yyy.zzz.1 255.255.255.0 ip access-group 101 in ip inspect FastEthernet_0_1 in speed 100 full-duplex ! router rip version 2 passive-interface FastEthernet0/0 network 10.0.0.0 network 172.16.0.0 network 192.168.0.0 network 2xx.yyy.zzz.0 no auto-summary ! ip classless ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 and with the following routes on the CentOS host: # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.219.0 * 255.255.255.0 U 0 0 0 eth1 2xx.yyy.zzz.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 default gw-fibrewire 0.0.0.0 UG 0 0 0 eth0 # ip route 192.168.219.0/24 dev eth1 proto kernel scope link src 192.168.219.1 2xx.yyy.zzz.0/24 dev eth0 proto kernel scope link src 2xx.yyy.zzz.23 169.254.0.0/16 dev eth1 scope link default via 2xx.yyy.zzz.1 dev eth0 The situation is this. >From the host itself I can ping 192.168.218.102 on 192.168.219.0/24 >From any other host on 2xx.1xx.y7y.0/24 I can ping 192.168.219.1 >From any other host on 2xx.1xx.y7y.0/24 I cannot ping 192.168.219.102 What setup steps on the CentOS host have I overlooked or what configuration errors have I committed? As I am a digest subscriber please use "reply all" so that I get an immediate copy of any replies. Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3