[SLUG] network failure

[David <david@nospam.kenpro.com.au>]

I'm having a strange intermittent ethernet failure. I've changed the NIC, 
the cables and the hub port, but it persists.

Symptoms: RH6 box is permenently connected to the 'net by modem and works
fine. This box is connected to the rest of a mixed LAN via ethernet (4
Macs, 1 NT, 1 Win98, 1 other Linux). When the problem occurs, the
RH6 box disconnects from the rest of the LAN, although all the
other machines can see each other. The modem connection is not effected.

To fix the problem, I do: /etc/rc.d/init.d/network restart
Then everything is ok till the next time (usually a few days).

Any one got any thoughts? ifconfig and route output below.

TIA, David.


[root@nospam.ns log]#ifconfig
eth0      Link encap:Ethernet  HWaddr 00:A0:CC:66:42:21
          inet addr:203.23.36.1  Bcast:203.23.36.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:162833 errors:65 dropped:516 overruns:15 frame:100
          TX packets:131711 errors:0 dropped:0 overruns:0 carrier:0
          collisions:21 txqueuelen:100
          Interrupt:9 Base address:0x6000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:3924  Metric:1
          RX packets:105 errors:0 dropped:0 overruns:0 frame:0
          TX packets:105 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0

ppp0      Link encap:Point-to-Point Protocol
          inet addr:139.130.32.150  P-t-P:139.130.32.129  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:1111783 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1138244 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10

[root@nospam.ns log]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
203.23.36.1     *               255.255.255.255 UH    0      0        0 eth0
139.130.32.129  *               255.255.255.255 UH    0      0        0 ppp0
203.23.36.0     *               255.255.255.0   U     0      0        0 eth0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         139.130.32.129  0.0.0.0         UG    0      0        0 ppp0
[root@nospam.ns log]# /etc/rc.d/init.d/network restart
Shutting down interface eth0                               [  OK  ]
Disabling IPv4 packet forwarding                           [  OK  ]
Enabling IPv4 packet forwarding                            [  OK  ]
Bringing up interface lo                                   [  OK  ]
Bringing up interface eth0                                 [  OK  ]
[root@nospam.ns log]#

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