Network Issue

[Hunki]

We have two network interfaces on our server.One is used to connect to the 172.x.x.x servers and carries a 172.x.x.x IP.The other is used to connect to 151.x.x.x server and has the 132.x.x.x as its IP.We have this drive where we need to route the 172.x.x.x network through the 132.x.x.x interface.My question is that can we test the connectivity through the 132 interface to the 172 server.In the present scenario the traceroute takes me through the 172 gateway coz the routing table is set in this way.No matter how I send the packet through the 132 interface using the traceroute -i option , but no luck what so ever because of the routing table.Can I make it leave my machine overlooking the routing table, in order to test the connectivity without actually touching the routing table.Is there a way beyond the traceroute.

Thanks to all the brilliant samaritans.

[Warren_9]

hi,

is it possible to add a static route to a host in 172 network?

# route add [172 host] [132 gateway] 1

and then test the traceroute to the 172 host.

GOOD LUCK!!

[Hunki]

What I meant was that they are removing the 172.x.x.x network interface and all the routes associated with it.And I need to test the routing of packets marked for 172.x.x.x server through the other interface i.e. 132.x.x.x.So how do I test the connectivity without changing anything currenly there on the server.Once again I want to test the connectivity between the 132.x.x.x interface on our end and 172.x.x.x server without changing anything on the server and also if that is successfull then we can make the change.So I want to know the method of testing the connectivity.traceroute is taking me through the 172.x.x.x , which I presume is becoz of the 172.x.x.x interface already there on the server, so I want to overlook that interface even though its configured .Pls let me know a command which can work for me in order to test.

[Warren_9]

hi,

i don't thing any command which could help to test the route from 132 interface to 172 host without any changes.

therefore, i suggest to add a static route to a host in 172 subnet to force it the through the 132 interface.

GOOD LUCK!!

[Fabio Ettore]

Hi Hanki,

did you try linkloop?

That command tests at a low level the connection bewteen lan cards. You just need the MAC address or HW station address available by lanscan.

man linkloop

The linkloop command uses IEEE 802.2 link-level test frames to check connectivity within a local area network (LAN).
....

HTH.

Best regards,
Fabio