I have an 831 running Version 12.4(19b) IOS. For some reason the ARP table includes every single address visited, whether it is on the LAN or through a VPN or on the internet. I believe this is slowing the performance of the router and might even be causing routing issues. The router hangs for a few seconds whenever I clear the ARP table. I've attached the config and a sample of the ARP table. Why would the router include all those non-LAN addresses in the ARP table?
Because of that in your config:
ip route 0.0.0.0 0.0.0.0 Ethernet1
Configure "no ip route ..." for the command above. You have already a default route because the interface is using dhcp.
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