Router hangs every day

[harpal singh]

Hi

I have cisco 2951 router having 2mbps(WAN) serial link & internal lan connected to gigabit interface  L2-switch(Primary)  having approx 150 users,

Every day i have to restart router atleast once a day, somtimes thrice a day.

I have just default route towards wan link.

when router hangs internal lan pings perfectly. but router gateway not . After restart everthing works smoothly.

what will cause this problem ?

[Sandeep Choudhary]

Hi Harpal,

please check this document:

http://www.cisco.com/en/US/products/hw/routers/ps359/products_tech_note09186a0080106fd7.shtml

which IOS u r running on router ??

paste sh version output.

Regards

Dont forget to rate helpful posts.

[Leo Laohoo]

If your routers hangs every day, then you should consider upgrading the IOS.

[Joseph W. Doherty]

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Posting

Does your default route direct to next hop IP or to the interface?  If the latter, ARP table can fill causing issues.  So also if the latter, change to the former.