[Etherboot-developers] Neighbour table overflow and 3com cards

[Jim M. <ja...@Mc...>]

I've seen many messages about 'Neighbour Table Overflow'
on this list.

I did just a very little bit of testing, but I have found
the following:

1) The 3c905b-tx-nm works fine.

2) The 3c905cx-txm has the 'Neighbour' problem.

3) The kernel loads fine, initializes the card and
   then when it goes to find the RPC port for 'nfsd'
   it can't get a response. 

4) If you run tcpdump on the server, you will see:

      arp who-has server.mimss.com tell ws002.mimss.com
      arp reply server.mimss.com is-at 0:60:8:bf:e6:2e
      arp who-has server.mimss.com tell ws002.mimss.com
      arp reply server.mimss.com is-at 0:60:8:bf:e6:2e
      arp who-has server.mimss.com tell ws002.mimss.com
      arp reply server.mimss.com is-at 0:60:8:bf:e6:2e

It appears that the workstation is doing an arp request
to get the mac address of the server.  The server is replying,
but the workstation isn't receiving or processing the reply
properly.  So, it sends the request again, for a total of
3 times.  Then when it fails, you see a 
'neighbour table overflow' message on the screen of the
workstation.

So, any network driver hackers out there have any ideas?

Thanks,
Jim McQuillan
ja...@lt...