hi,
HSRP ,this is used to setup a Backup router to take-over when the main
router fail`s...that is all...it can do some load balalncing (of a sort)
although not really
you use a virtual ipp address to represent both routers and the HSRP process
just acts as a virtual (switch-box) moving packets from one router to the
other
CEF this is a technique used by cisco routers to switch packets quickly..
what i mean is that, in a router with CEF ,instead of doing a destination
lookup for every single packet (the routing) then moving the packet to the
outbound interface (the switching) CEF uses a cache to route once switch
many..once it finds a route for a packet it keeps records in an mtrie(don`t
worry about the name) and adjancency (can`t spell) table.
and then uses this info to move (switch ) any new packets bound for that
same destination directly to the outbound int..
these two technologys are NOT interchangeable...
HTH
steve
>From: "Rashid Lohiya"
>Reply-To: "Rashid Lohiya"
>To: [EMAIL PROTECTED]
>Subject: IP CEF - explanation required [7:4505]
>Date: Tue, 15 May 2001 04:45:22 -0400
>
>I have been asked by my manager to add the ip cef command to the 3 x 2600
>router configs, instead of configuring HSRP on two of them.
>
>All I know about this is the syntax which I checked on the doc cd and what
>it stands for: Cisco Express Forwarding.
>
>I do not understand what this is actually doing, and how it works, is it
>load balancing in some way?
>
>Can anyone pls help, I hate putting commands on, which I do not know the
>impact on the network/router/memory etc in a live environment.
>
>Thanks
>
>Rashid
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