I have a relatively new 1811 router and it seems like every other day the memory is completely full and no one is able to transfer any data on the network until it is restarted. The unit has the standard 128 MB ram running IOS 12.4(6)T10. Any suggestions would be greatly appreciated.
Please change the following route statement -
ip route 0.0.0.0 0.0.0.0 FastEthernet0
Instead of pointing the route to fa0 point it to next hop IP address.
This statement must be causing ARP request to be generated on the ethernet for every destination the router finds through the default route because the router considers all of these destinations as directly connected to FA0.