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ASA 5550 8.0 sub interface causing cpu to max out

Unanswered Question
Jan 8th, 2014
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Hi


how many sub interfaces can an intefaces handle on a 5550 ASA.

I had three sub interfaces configured with no problems. I now need 7 for my wireless dmz but when adding more the cpu max's out and the firewall struggles.


any help would be appreciated.


thanks

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prateeve Thu, 01/09/2014 - 06:56
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Hi Michael,


It actually depends on the amount of traffic that it coming behind one physical interface (interface on which you have created sub interefaces). If there would be a burst of traffic that the interface Rx ring is unable to handle it could cause a cpu spike.


- Prateek Verma

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