Neighbour table overflow

Hello Everybody

I have installed a 3 COM OFFICECONNECT SECURE ROUTER on a LAN
connected to an ADSL connexion .The Router is connected to the isp
server .Everything is OK .
But i have no connexion to the Internet!!!!.
When i see the log of the router This following messages appear :

localhost kernel:NET:311 messages suppressed
localhost kernel:Neighbour table overflow

The config of the router is correct.I have contacted my isp,
everything is OK.
No errors on the line ,it's clear.

I have already installed a linksys router but it's the same problem.

When i connect the router in another ADSL line ,it's working fine!!!.

Thanks for any help you might want to share!

Moun


Mounir