[c-nsp] OSPF flapping ME3400

Lee Starnes lee.t.starnes at gmail.com
Mon Dec 7 14:28:53 EST 2015


Hello everyone,

We have some ME3400 switches that are doing OSPF. These work fine and have
for a couple years now. However, if a link on them (100M) gets hit with a
ddos attack, the switch will start OSPF flapping. This in turn causes all
the others to do the same. Is there a way to dampen the flapping affect so
that it does not cause a massive network outage?

Is there a best practices for this?

Any pointers or config best practices would be greatly appreciated.

Thank you.

-Lee


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