Load balancing is a way of splitting up traffic onto multiple paths between
two (or more) endpoints; effectively increasing capacity between those
points. With some methods the maximum rate for a single transmission will be
whatever the single component in that bundle is able to handle.

There's probably a few more lurking around than the ones I've listed below..
Not all are applicable everywhere, research the topics.

- MLFR (both FRF.15 and FRF.16)
- MLPPP
- IMA ;)
- "Etherchannel"/802.3ad
- PVST/PVRST/MST - treat some vlans differently
- Multiple HSRP groups
- GLBP
- Equal cost multipath (ECMP) using statics, RIP, ISIS, EIGRP, BGP, MPLS TE
- Unequal cost multipath using EIGRP, BGP (dmzlink-bw), MPLS TE (multiple
tunnels, different amount of BW on each)
- Anycast
- "load balancers" (in front of a web farm)
- WCCP

Regarding your example on two ISPs is more about managing inbound/outbound
traffic volumes to your AS.. I guess you could consider that load balancing
but I'd think it's more about capacity planning. Nuances, I guess ;-)


Please start create a new thread using a new message instead of replying to
someone else's.


HTH

Kaj



> From: <[email protected]>
> Date: Tue, 15 Sep 2009 13:01:40 -0700
> To: Kaj Niemi <[email protected]>
> Cc: Joe Astorino <[email protected]>, ccie_rs
> <[email protected]>, Cisco certification <[email protected]>
> Subject: Re: [OSL | CCIE_RS] My CCIE R&S "Templates"
> 
> Question to anyone who can give a little insight..when labs or even real life
> senerios..what is load balancing..that is so general when i read it or hear
> it...i can only think of 2 ISPs one being primary and the other being
> secondary....,,,,is that that right ro is there others...

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