Hi,
I understand yes that CEF can assist with load balancing but, be aware it must be set
at both ends of a service as I understand it. Unfortunately I don't know enough about
CEF yet. We do however have it configured in a number of instances.
Teunis,
Hobart, Tasmania
Australia
On Friday, December 15, 2000 at 11:27:59 AM, Priscilla Oppenheimer wrote:
> Fast switching definitely has the problem you refer to. Fast switching
> offers per-destination load-sharing. Since the router caches information on
> how to forward traffic to a destination, all traffic to that destination
> exits the same interface.
>
> One of the goals of CEF was to overcome this problem. I can't remember the
> details, but I think you can do more precise load-balancing with CEF. I'll
> see if I can dig up more details and get back to you. Or maybe some other
> folks who use CEF can chime in.
>
> Priscilla
>
> At 12:31 PM 12/13/00, Adam Hickey wrote:
> >Hey all,
> >
> >Question:
> >1) On a router with multiple outbound paths, if fast switching (or CEF) =
> >is enabled and outbound traffic comes through towards a given =
> >destination, is all traffic for that same destination then locked to the =
> >same path untill the route cache is cleared?
> >
> >2) If the above is yes, how long does the router maintain its route =
> >cache?
> >
> >Purpose:
> >We have a 7507 that will be running BGP over 2 T1's. We are attempting =
> >to establish load balancing both inbound and out. Halabi (2nd Ed.) in =
> >Chapter 7 warns that to do this one must be familiar with the different =
> >methods of switching. Thus I am studying to find the pro's and cons of =
> >each. CEF or fast switching sounds about right, however, the above =
> >question was raised as I was discussing this with our lead engineer.
> >
> >
> >Thank You
> >Adam
> >[EMAIL PROTECTED]
> >
> >_________________________________
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>
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
>
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