From: Paul Jin (PJin@EIGRP.Org)
Date: Wed Feb 19 2003 - 02:04:05 GMT-3
Hi all,
I thought the router's switching mechanism (like CEF) is what actually does
the packet load sharing (per dest or packet) as long as the router has
installed multiple
equal cost routes to those destination in the routing table.
And by default IGP such as ospf, etc will install up to 4 equal routes (6
max) or even static routes can be load shared,
and for eBGP routes, the default is one, however you can install up to
6 equal routes by configuring it to do so with max-path command.
I believe iBGP routes are the ones that can install one and only one route
in the route table no matter what (at least on the standard code).
It has been awhile since I checked, so someone let me know if I am off on
this one.
As far as the difference between the two, I think people use those 2 terms
generally as the same thing. However you would want to get the definition
straight with the person you are speaking to.
I have see examples where people used the term load share to mean things
like CEF load sharing, but the same people with use the term load balance to
mean things like MLPPP where the multiple paths/pipes are seen as one big
logical link.
thanks,
Paul
-----Original Message-----
From: Albert Lu [mailto:albert_lu@optushome.com.au]
Sent: Tuesday, February 18, 2003 9:10 PM
To: 'Gary Duncanson'; ccielab@groupstudy.com
Subject: RE: BGP load sharing or load balancing
Hi,
Depends on your definition of load sharing and load balancing. BGP allows
for redundancy and traffic engineering going in and out of the AS. You can
balance your traffic out your links by manipulating localpref and prepend
based on data collected of how much traffic is being pumped out for which AS
destination.
BGP does not do per packet load sharing like OSPF or EIGRP if that was what
your looking for.
Albert
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Gary Duncanson
Sent: Wednesday, February 19, 2003 10:07 AM
To: ccielab@groupstudy.com
Subject: BGP load sharing or load balancing
Could someone please expand as to whether BGP provides load sharing or load
balancing?
Thanks
Gary
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