I have 2 force10 s25 switches that are used for a dark fiber link between two school buildings. One of my switches is filling its ARP table to the brim and then failing. This can happen as often as every 1.5 hours. I noticed that one of the addresses in the cache is an address from our previous web filter that has not been online in 6 months. We can't think of anything that would be holding an ARP cache but something seems to be feeding our force10 with addresses, but by running show arp summary, sometimes up to 50 new addresses per second are being added. What should I be looking for to figure out where this is coming from?
Here is my show ip route connected
MiddleSchool#show ip route connected Destination Gateway Dist/Metric Last Change ----------- ------- ----------- ----------- C 10.4.0.0/16 Direct, Vl 400 0/0 03:39:18 C 192.168.1.0/30 Direct, Te 0/28 0/0 03:39:20
The only static route is the default route (0.0.0.0 /0 over the tengig 0/28 port) over the fiber link since all traffic must leave this switch and go to the other building to reach the internet.