Networking problems

[Sen7inel]

Hello,

I'm pretty new to Linux, and just finished installing Debian 3.0 r1. The problem is that I can't connect to anything. It doesn't seem to route correctly, and I can't even ping my own vlan.

Let's say my ip is 61.58.26.213, netmask 255.255.255.192, and gw 61.58.26.161. Now, when I check out the routing table it only shows localnet with "*" gw. Also, I can't ping any other computers near me, like 61.58.26.215. Ok then, when I connect my laptop (Win98) with a cross-over cable and set its ip to 61.58.26.212, I can ping it just fine from the Linux box and everything else also works between these machines. Then, when I disconnect the x-over cable and plug the one which goes to the switch downstairs, I get exactly _ONE_ ping reply from this .215 machine I know should be responding.

The normal cable is ok and the NIC should be ok.

What gives?

 

[clonny2]

first, make sure that networking is at least working.

type ifconfig and make sure there is a entry for lo and an entry for each nic.

ie eth0.

 

[justice41]

You also need to add a default route to your routing tables
[tt]
route add default gw 61.58.26.161
[/tt]
so that [tt]'route -n'[/tt] will show something that looks like
[tt]
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 61.58.26.161 0.0.0.0 UG 0 0 0 eth0
[/tt]
jaa

 

[Sen7inel]

> route add default gw 61.58.26.161

This gives me SIOCADDRT: Network is unreachable.

As for ifconfig, there are valid(looking) entries for both eth0 and eth1. eth1 works fine (192.168.0.1), and I use it all the time to get to the box (no i/o devices)..

This problem with the 61.58.26.192-network was there before I installed the second nic.

 

[Sen7inel]

Yet some more hints.. I have a Windows machine and the Linux machine here. If I unplug the network cable from Windows computer, connect the freshly booted Linux to the network, I can once again ping ONCE a host in my own network (61.58.26.193-254). Now, after this the Linux system is silent, so I switch the cable back to the Win computer. I can now ping all computers in my own network succesfully from Windows, but can't go any further untill I explicitly ping 61.58.26.193, which apparently is a router of some sort.. Ok, so I check out the arp table and what do I find out: both 61.58.26.193 and .161 have the same MAC address. Setting the .193 as gw on the Linux box doesn't help.

Anyone? (or just tell me if I'm making a damn fool out of myself)