Removing netflow locked my router up?

Unanswered Question
May 8th, 2009

All,

I had to enable netflow on an interface this morning to see what was taking all of our bandwidth. After finding the host, I created a class map to add to the already existing policy map that was on the serial interface. I wrote my changes, and then realized that I wanted to take netflow off. When I took it off, the router locked up and brought all of our branches down.

I've enabled/disabled netflow on many production networks and haven't had this happen. Can anyone think of a cause? Processor seemed to have been fine.

Thanks,

John

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Joseph W. Doherty Fri, 05/08/2009 - 14:21

I would suspect a "software defect" that only arises under rare conditions. I have seen router crashes and corrupted running configs while making legal config changes. Fortunately, seems to happen rarely.

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