On Thu, 20 Jan 2000, Michael Daniels wrote about, Can't Ping Other machines in local
LAN:
> Hello,
>
> I recently upgraded my RH 5.2 to RH 6.1. Before the upgrade I had my
> machine configured correctly and was able to ping, telnet, basically
> communicate with the other machines on my Local LAN. After the upgrade I
> can no longer ping anything.
>
> I am using a 3Com 3C509B-TPO NIC. The eth0 device is (as far as I can tell)
> set up correctly and activates without any errors. I have stopped and
> restarted the network (/ect/rc.d/init.d/network stop and start) without any
> problems. Whenever I try to ping another machine I get the message
> 'Destination Host Unreachable'.
Well if it is as you say then you need to check routes, the error
Destination Host Unreachable means there is no route to host.
Firstly dmesg should give the card details, remember if the machine has
been up a while the chances are that the eth0 part of dmesg has been over
written, you can with Redhat look at /var/log/dmesg that is a copy of
dmesg from bootime.
Then ifconfig eth0 to make sure the interface is up and "configured"
properly.
Then use the route command, here we may have problems, route does DNS
lookups so if you issue the route command as is, "route" and it seems to
hang and show nothing, then that would say you dont have access to a dns
server, route -ne will show routing in ip number format and route will then
do no DNS lookups.
If route does hang then you have found one of your problems, check that
/etc/resolv.conf has the nameserver defined and that you have a route to
your nameserver.
To try out the NIC without a DNS server either enter the host into
/etc/hosts or ping by IP# not domainname.
> Any help will be greatly appreciated. I was getting ready to set up SAMBA
> when I realized that my network wasn't working.
>
> Thanks
>
> MikeD
--
Regards Richard
[EMAIL PROTECTED]
http://people.zeelandnet.nl/pa3gcu/
