[98332] in RedHat Linux List
DHCP Problems - "The Saga Continues"
daemon@ATHENA.MIT.EDU (Steve Ettorre)
Sun Nov 8 09:57:59 1998
Date: Sun, 08 Nov 1998 09:55:06 -0500
From: Steve Ettorre <sme@nycap.rr.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
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I previously posted:
> I am hooking up a second computer to the Time Warner roadrunner cable
> modem network in Albany, NY. The first computer has been running
> smoothly using RH v4.2 with dhcp at boot time. I am running v5.1 on
> the new computer. At boot the ethernet card is detected properly and
> dhcp fires. However, it is consistently fails. As additional
> information, I have somehow screwed up the configuration such that I
> cannot successfully ping anything - even localhost! When I run the
> network configurator under the control panel, both localhost and eth0
> are inactive - I cannot activate them. Also, an odd observation - for
> v4.2 when dhcp fires it updates some network information contained in
> two files (resolv.conf and hostinfo-eth0) in /etc/dhcpc. This
> directory does not exist in v5.1. I went ahead and created it.
>
> I must be doing something stupid. Anyone have any recommendations for
> things to check or try out?
>
> ---------------------------------------------------------
I have generated some additional information from ifconfig, route and
netstat - please see the following:
"invoke: ifconfig"
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:304 errors:0 dropped:0 overruns:0
TX packets:304 errors:0 dropped:0 overruns:0
eth0 Link encap:Ethernet HWaddr 00:10:5A:25:3E:C8
inet addr:24.92.53.42 Bcast:24.92.53.255 Mask:255.255.255.0
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
TX packets:45 errors:0 dropped:0 overruns:0
Interrupt:10 Base address:0x300
"invoke: route -n"
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
24.92.53.0 24.92.53.1 255.255.255.0 UG 0 0 1
eth0
24.92.53.0 0.0.0.0 255.255.255.0 U 0
0 1 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0
0 6 lo
0.0.0.0 24.92.53.1 0.0.0.0 UG 0
0 2 eth0
"invoke: netstat -i"
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP
TX-OVR Flags
lo 3584 0 304 0 0 0 304 0
0 0 BLRU
eth0 1500 0 0 0 0 0 46 0 0
0 BNRU
As you can see from the ifconfig output, there are no packets received.
A physical observation - I am using a cable modem - absolutely no lights
flicker at all when I try to ping my gateway. The stuff is not getting
out from the box to the network. I tried to ping this computer
(24.92.53.42) from another network computer - no go!
I would appreciate any insights/recommendations.
TIA,
Steve Ettorre
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<br>I previously posted:
<blockquote TYPE=CITE>I am hooking up a second computer to the Time Warner
roadrunner cable modem network in Albany, NY. The first computer has been
running smoothly using RH v4.2 with dhcp at boot time. I am running v5.1
on the new computer. At boot the ethernet card is detected properly and
dhcp fires. However, it is consistently <u>fails</u>. As additional information,
I have somehow screwed up the configuration such that I cannot successfully
ping anything - even localhost! When I run the network configurator under
the control panel, both localhost and eth0 are inactive - I cannot activate
them. Also, an odd observation - for v4.2 when dhcp fires it updates some
network information contained in two files (resolv.conf and hostinfo-eth0)
in /etc/dhcpc. This directory does not exist in v5.1. I went ahead and
created it.
<p>I must be doing something stupid. Anyone have any recommendations for
things to check or try out?
<p>---------------------------------------------------------</blockquote>
<p><br>I have generated some additional information from ifconfig, route
and netstat - please see the following:
<p>"invoke: ifconfig"
<br>lo Link encap:Local Loopback
<br> inet addr:127.0.0.1
Bcast:127.255.255.255 Mask:255.0.0.0
<br> UP BROADCAST
LOOPBACK RUNNING MTU:3584 Metric:1
<br> RX packets:304
errors:0 dropped:0 overruns:0
<br> TX packets:304
errors:0 dropped:0 overruns:0
<p>eth0 Link encap:Ethernet HWaddr
00:10:5A:25:3E:C8
<br> inet addr:24.92.53.42
Bcast:24.92.53.255 Mask:255.255.255.0
<br> UP BROADCAST
NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
<br> RX packets:0
errors:0 dropped:0 overruns:0
<br> TX packets:45
errors:0 dropped:0 overruns:0
<br> Interrupt:10
Base address:0x300
<br>
<p>"invoke: route -n"
<br>Kernel IP routing table
<br>Destination Gateway
Genmask Flags Metric Ref
Use Iface
<br>24.92.53.0 24.92.53.1 255.255.255.0
UG 0 0
1 eth0
<br>24.92.53.0 0.0.0.0
255.255.255.0 U
0 0
1 eth0
<br>127.0.0.0 0.0.0.0
255.0.0.0
U 0 0
6 lo
<br>0.0.0.0 24.92.53.1
0.0.0.0
UG 0 0
2 eth0
<br>
<p>"invoke: netstat -i"
<br>Kernel Interface table
<br>Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR
TX-OK TX-ERR TX-DRP TX-OVR Flags
<br>lo 3584
0 304 0
0 0 304
0 0 0 BLRU
<br>eth0 1500 0
0 0 0
0 46 0
0 0 BNRU
<p>As you can see from the ifconfig output, there are no packets received.
A physical observation - I am using a cable modem - absolutely no lights
flicker at all when I try to ping my gateway. The stuff is not getting
out from the box to the network. I tried to ping this computer (24.92.53.42)
from another network computer - no go!
<p>I would appreciate any insights/recommendations.
<p>TIA,
<br>Steve Ettorre
<br>
<br>
<br> </html>
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