[c-nsp] Sup 720 question

[Dale W. Carder]

Thus spake Drew Weaver (drew.weaver at thenap.com) on Thu, Sep 28, 2006 at 12:13:35PM -0400:
>     Does anyone know if the CPU overhead is greater when using the
> On-board sup 720 gig-e as opposed to using a line card? We had an
> incident where 190kpps going over Gig 5/1 (attached to the sup720)
> choked an entire switch.

The port asic that the gig-e on the front of the 720 sits on
also feeds the RP and the SP CPU's.  If you anger that port 
asic, you could anger the router.

Don't use the the ports on the sup720 unless for OOB mgmt where
you have control over the situation.

Dale

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Dale W. Carder - Network Engineer
University of Wisconsin at Madison
http://net.doit.wisc.edu/~dwcarder