Looks like what you said is multilayer switching.
Can we use mulitlayer switching and CEF inter-changeably?
jp
""Stephen Skinner"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> 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
> >FAQ, list archives, and subscription info:
> >http://www.groupstudy.com/list/cisco.html
> >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
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