Bug 82859 - routing issues with multiple nics in same subnet.
routing issues with multiple nics in same subnet.
Status: CLOSED WONTFIX
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: net-tools (Show other bugs)
2.1
All Linux
medium Severity medium
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Assigned To: Radek Vokal
Ben Levenson
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2003-01-27 15:18 EST by Chris Kloiber
Modified: 2007-11-30 17:06 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2005-03-29 06:18:54 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
host file (278 bytes, text/plain)
2003-01-28 08:52 EST, John Cotter
no flags Details
ifcfg for eth0 (104 bytes, text/plain)
2003-01-28 08:53 EST, John Cotter
no flags Details
ifcfg for eth1 (103 bytes, text/plain)
2003-01-28 08:54 EST, John Cotter
no flags Details
ifcfg for eth2 (103 bytes, text/plain)
2003-01-28 08:55 EST, John Cotter
no flags Details
network file (63 bytes, text/plain)
2003-01-28 08:55 EST, John Cotter
no flags Details
route -n output (562 bytes, text/plain)
2003-01-28 08:56 EST, John Cotter
no flags Details

  None (edit)
Description Chris Kloiber 2003-01-27 15:18:09 EST
Description of problem:

A customer's large Oracle server (10 nics, 2 onboard and 2- 4 port cards) 
He can use both eth0 and eth1 (the onboard cards) on the same network
(172.13.36.0) but add any of the others and this problem occurs.

I verified I see the same problem using single 4 port card on my 7.2 Alpha at
home. When more than 2 nics are configured in the same subnet, all of the cards
in that subnet stop working and the route -n looks like:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.21.36.0     0.0.0.0         255.255.255.0   U     0      0        0 eth2
172.21.36.0     0.0.0.0         255.255.255.0   U     0      0        0 eth2
172.21.36.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
172.21.36.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         172.21.36.1     0.0.0.0         UG    0      0        0 eth1

I currently don't have the hardware to test this in 8.x
Comment 1 John Cotter 2003-01-28 08:52:11 EST
Created attachment 89639 [details]
host file
Comment 2 John Cotter 2003-01-28 08:53:51 EST
Created attachment 89640 [details]
ifcfg for eth0
Comment 3 John Cotter 2003-01-28 08:54:35 EST
Created attachment 89641 [details]
ifcfg for eth1
Comment 4 John Cotter 2003-01-28 08:55:04 EST
Created attachment 89642 [details]
ifcfg for eth2
Comment 5 John Cotter 2003-01-28 08:55:42 EST
Created attachment 89643 [details]
network file
Comment 6 John Cotter 2003-01-28 08:56:56 EST
Created attachment 89644 [details]
route -n output
Comment 7 Phil Knirsch 2003-01-28 08:59:33 EST
Well, for one, the GATEWAY in the network file is wrong. It should read:

GATEWAY=172.21.36.1

although i doubt that this is the source of the problem.

Unfortunately i don't have the hardware here either to reproduce the problem, so
until i have this bug will have to wait.

Read ya, Phil
Comment 8 Radek Vokal 2005-03-29 06:18:54 EST
If this bug still persists please reopen. Otherwise I'm closing this with WONTFIX

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