From: boby2kusa@hotmail.com
Date: Fri Sep 05 2003 - 13:18:54 GMT-3
You might be able to enter the command under the interface but per-packet
load-balancing is not supported on CEF based MSFC's which is MSFC2:
Load Balancing
Cisco Express Forwarding also delivers additional functionality with respect
to load balancing of traffic across multiple equal-cost parallel paths.
Traditionally, routing protocols such as OSPF and Enhanced Interior Gateway
Routing Protocol (EIGRP) have limited equal-cost load-balancing paths to
four paths. With CEF, this has been increased to six equal-cost parallel
paths. With routing protocols, more than four parallel paths can exist, but
a maximum of four can be installed in the actual routing table. Routing
protocols such as EIGRP and OSPF support the concept of a Routing
Information Base (RIB). If a route cannot be installed into the routing
table, it can be maintained in the RIB. Because CEF relies upon a FIB and an
adjacency table for forwarding decisions, it is not limited to that which is
actually present in the routing table, and, in fact, can reference the RIB,
which enables CEF to install a greater number of parallel paths (with
entries gleaned from the RIB). It is important to note that the Catalyst
6500 Family offers the ability to load balance across parallel paths on a
per-flow basis only. This means that per-packet load balancing is not
supported on the Catalyst 6500 Family of Switches when using CEF-based
forwarding.
http://www.cisco.com/warp/public/cc/pd/si/casi/ca6000/tech/c65sp_wp.htm
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "'MADMAN'" <dmadlan@qwest.com>; "'Ccielab (E-mail)'"
<ccielab@groupstudy.com>
Sent: Friday, September 05, 2003 9:03 AM
Subject: RE: Cisco 6506 and BGP problem
> Dave,
>
> Are there any toys that you *don't* have in you lab? No matter
> what platform someone is asking about, you always seem to come back with
> a config example ;)
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-334-8987
> Direct: 708-362-1418 (Outside the US and Canada)
>
>
> -----Original Message-----
> From: MADMAN [mailto:dmadlan@qwest.com]
> Sent: Friday, September 05, 2003 9:13 AM
> To: Mike Williams
> Cc: 'Hugo Padilla Prad '; 'Brian McGahan'; 'zhang-meng'; 'Ccielab
> (E-mail)'
> Subject: Re: Cisco 6506 and BGP problem
>
>
> I haven't tested it but the per packet loadsharing appears to be
> supported:
>
> MSFC15(config)#inter vlan 64
> MSFC15(config-if)#ip load-sharing per-packet
>
> Dave
>
>
> Mike Williams wrote:
>
> >I don't see why it wouldn't. If you're using and MSFC/MSFC2 you can
> use
> >CEF for load balancing or even just equal-cost path load balancing (I'm
> >using Native IOS but I'm sure that running IOS on an MSFC on a 65xx in
> >Hybrid mode would use these features are they're IOS based). I think
> >Brian's idea is a perfect idea that's both simple and effective.
> >
> >Mike W.
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> >Hugo Padilla Prad
> >Sent: Thursday, September 04, 2003 10:09 PM
> >To: 'Brian McGahan'; 'zhang-meng'; 'Ccielab (E-mail)'
> >Subject: RE: Cisco 6506 and BGP problem
> >
> >
> >Brian,
> >
> >My understanding is that 6506 doesn't support per-packet load balance.
> >Regards,
> >
> >-Hugo
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> >Brian McGahan
> >Sent: Thursday, September 04, 2003 10:18 AM
> >To: 'zhang-meng'; 'Ccielab (E-mail)'
> >Subject: RE: Cisco 6506 and BGP problem
> >
> >
> >Meng,
> >
> > Why not just put two static default routes? With CEF you can
> >load balance between these routes on a per-packet or per-destination
> >basis.
> >
> >HTH,
> >
> >Brian McGahan, CCIE #8593
> >bmcgahan@internetworkexpert.com
> >
> >Internetwork Expert, Inc.
> >http://www.InternetworkExpert.com
> >Toll Free: 877-334-8987
> >Direct: 708-362-1418 (Outside the US and Canada)
> >
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> >zhang-meng
> >Sent: Thursday, September 04, 2003 4:02 AM
> >To: Ccielab (E-mail)
> >Subject: Cisco 6506 and BGP problem
> >
> > Hi: Group
> > A problem, I want to use 6506 (with layer 3 function) to connect
> >with two ISP(using two 1000BaseT port) load balance, but Tel can't
> >support BGP, they worried statibility.
> > What kinds of solution and Could you give some suggestion and
> >design.
> >
> > Regards
> > Meng Zhang
> >
> >
> >_______________________________________________________________________
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>
> --
> David Madland
> CCIE# 2016
> Sr. Network Engineer
> Qwest Communications
> 612-664-3367
>
> "Emotion should reflect reason not guide it"
>
>
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