Hello.

I have the following setup 

2 Linux based routers.. 
#1 has 5 NIC's, 4 CN100TX and one NE2000. (tulip + ne driver)
#2 has one CN100TX and 1 DFE-570TX (4port) (tulip driver)

#1 has about 20 virtual interfaces extra and #2 has 5
Total # of ip's are now 10 C-blocks.

The problem I come across is that routes that go to #2 dissappear and
reappear radomly although they are added statically when I went over to
the 2.2.x series of kernels. I have a slight suspicion that this is caused
in the arp code as I had problems with the default settings in 2.0.x also.

In 2.0.x series the problem was that machines dropped connection for a
minute and then could continue. Fixed that by increasing ARP_MAXSIZE
to 4096 before compiling the kernel. However in the 2.2.x series the arp
state machine is totally rewritten, and I am at a loss trying to figure
out how it works. As the traffic flow trough these routers is relatively
high, running an arp daemon seems not to be an attractive option.

The version of the tulip driver is 0.91

Thankful for any information about this phenomena...

/Roger

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Roger Abrahamsson
System/Network Administrator,  Obbit AB

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