Multiple netcards and problems

From: MONZ (monz@danbbs.dk)
Date: Wed Oct 18 2000 - 08:14:49 EST


I have four 3c905 cards in a firewall/router, each its own IRQ and I/O.
BIOS detects tham all and initializes them, ie., with a hub connected,
all display connection ok. It's an Aopen PII/III mobo, don't have its
version.

Booting Linux, two cards consequently goes dead while network in
started.
Same thing with network restart/reload.

Tried shuffling cards in the fife different PCI slots, no change
(especially since PCI #1 and #5 share IRQ's). Also tried combinations of
Auto and manual IRQ-assignments in BIOS (just to try it), no change.
Tried combinations of three 905C's with one 905B, and half of each;
don't have access to four identical cards. Maybe a problem here?

Tried with only three cards. Som PCI#/card combinations work, some not.

Some stats:

cat /proc/pci |grep IRQ :
  Medium devsel. IRQ 7. Master Capable. Latency=32. Min Gnt=10.Max
Lat=10.
  Medium devsel. IRQ 9. Master Capable. Latency=32. Min Gnt=10.Max
Lat=10.
  Medium devsel. IRQ 10. Master Capable. Latency=32. Min Gnt=10.Max
Lat=10.
  Medium devsel. IRQ 11. Master Capable. Latency=32. Min Gnt=10.Max
Lat=10.

cat /proc/pci |grep I/O :
  I/O at 0xf000 [0xf001].
  I/O at 0x6400 [0x6401].
  I/O at 0x6800 [0x6801].
  I/O at 0x6c00 [0x6c01].
  I/O at 0x7000 [0x7001].
  I/O at 0x7400 [0x7401].
  I/O at 0xe000 [0xe001].

cat /proc/net/netlink :
  sk Eth Pid Groups Rmem Wmem Dump Locks
  c1fe29c0 0 0 00000000 0 0 00000000 0
  c1fe2700 3 0 00000000 0 0 00000000 0

This is interesting: Netlink shows only eth0 and eth3; 1 and 2, th
troublemakers, don't show at all. I have no explanation...

ifconfig :
  eth0 Link encap:Ethernet HWaddr 00:01:02:14:E3:4F
          inet addr:10.0.0.2 Bcast:10.0.255.255 Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:71 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:7 Base address:0x6800

  eth1 Link encap:Ethernet HWaddr 00:01:02:14:E3:81
          inet addr:10.13.0.1 Bcast:10.13.255.255 Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:9 Base address:0x6c00

  eth2 Link encap:Ethernet HWaddr 00:01:02:15:04:73
          inet addr:10.12.0.1 Bcast:10.12.255.255 Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:10 Base address:0x7000

  eth3 Link encap:Ethernet HWaddr 00:50:DA:2C:FD:75
          inet addr:10.1.0.1 Bcast:10.1.255.255 Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:11 Base address:0x7400

-- 
Regards,
              Mogens Valentin
    Networking - Security - Programming
  Linux configuration and troubleshooting
http://www.danbbs.dk/~monz - monz@danbbs.dk
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