Strange network problem

[Brian Densmore]

> -----Original Message-----
> From: Gerald Combs
> 
> Brian Densmore wrote:
> 
> > /etc/modules file and now sound works. Did the same thing 
> for the network
> > card, but even though it comes up and has link and 
> autonegotiates I have
> > no connection to my LAN. The hub shows the card as up with 
> link in 100MB full
> > duplex. The card seems to working by observing the lights. 
> Ifconfig shows the card 
> > as up, working and assigned the proper IP. The only thing 
> that happens if I 
> > try pinging the gateway is I see the TX count go up. So I 
> installed my old 
> > nic and I get the same thing. I've also tried running 
> knoppix from cd and still
> > the same problem. I haven't changed the cable yet or tried my laptop
> > on that connection yet, so there is the possibility 
> something is wrong with 
> > the cable. Anyone have any other ideas? The PC was working 
> fine before I
> > disconnected it and did the upgrade.
> 
> Do you have "mii-tool" or "mii-diag" on your system?  If so, do they

Ah, I was mis-spelling it. I do have ethtool and it shows me
that information.
I should have mentioned that I did configure the card using netcardconfig.
I also added the route and dns entries. I looked at ifconfig and netstat
and route and everything looked fine. I also neglected to mention that with
the onboard NIC I get packets transmitted according to ifconfig in the TX
field, but with the old card I get error packets and no TX packets in
ifconfig. Network unreachable in both cases after doing a ping.

netmask is 172.21.12.255 which is correct.

Unfortunately, ethereal isn't installed on this machine, so I need to find
a CD that has it so I can dpkg it. I think my knoppix 3.3 CD has it.
If not I might be able to copy it off of my laptop.

Haven't tried arp -an or thought to 
watch the gateway for incoming pings from the desktop.

Thanks for the hints!

Brian

> show something like this?
> 
> rufus:/home/gerald# mii-tool -v eth0
> eth0: negotiated 100baseTx-FD, link ok
>   product info: Intel 82555 rev 4
>   basic mode:   autonegotiation enabled
>   basic status: autonegotiation complete, link ok
>   capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
>   advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
>     flow-control
>   link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
> 
> You might also check:
> 
>   - Your netmask.
> 
>   - The output of "arp -an" (e.g. do you see anyone else's address)?
> 
>   - Your routing table ("netstat -rn").
> 
>   - If you run tethereal/tcpdump on your machine, find out if you're
>     seeing any other traffic on your network.
> 
>   - If your gateway is so inclined, show its ARP table, or run
>     tethereal/tcpdump to see if anything from your box is making it to
>     the gateway.
>