From: henryd31@comcast.net
Date: Thu Sep 15 2005 - 18:00:04 GMT-3
I wonder if the responses here went a bit too far off what the guy was asking for.
The question is not clear in itself, because you don't need to configure
variance in order to achieve load balancing. So, either he was confused thinking
variance would be needed as a main attribute to enable load balancing, or
he understands what variance achieves and is asking for other ways to get
load balancing achieved that does not use variance, and in this case he's
asking for unequal load balancing. If the former, the answer is in here already, if
the latter then you have the options available to manipulate metrics such as bandwidth
and delay, use offset lists, maybe even manipulate the K values...
> bandwidth is definitlly going to be the main way to achieve load-balancing.
> if the paths are equal metric you're set. if not, use the bandwidth
> command. there may be a circumstance where you cannot use the bandwitch
> command so you'll have to use varience. if you cannot use varience then
> you'll have to manipulate the delay (there is a good IE lab that
> illustrates this........i won't pretended to fully understand this aspect
> yet).
>
> so
> 1) bandwitch already equal - do nothing, unless you want more than 2 path,
> then issue "manimum-paths X"
> 2) bandwidth is not equal - use bandwitch command, or use varience command
> 3) if your not allowed to use variance, then use delay
>
>
> Regards,
>
> John D. Matus
> Technical Support / PAS
> Fujitsu Consulting
> 626-568-7716
> John.Matus@tokiom.com
>
>
>
> Ed Tan
> <tytanx@gmail.com
> > To
> Sent by: ccielab@groupstudy.com
> nobody@groupstudy cc
> .com
> Subject
> Re: EIGRP load balance
> 09/15/2005 11:39
> AM
>
>
> Please respond to
> Ed Tan
> <tytanx@gmail.com
> >
>
>
>
>
>
>
> Hi All,
>
> Below are the conclusions from my testing and I welcome any input.
>
> The key is to adjust the metric/cost to "equal-metric" path if variance
> command is not allow for EIGRP unequal-cost path load balancing.
>
> 1) Bandwidth command under EIGRP interface - if the path calculation is not
> too complex, this is the easiest!
> 2) Offset-list command under router eigrp - use it when you need more
> advance route control eg ACL, or when the bandwidth calculation is too
> complicated (+- the metric definitely easier than */+)
> 3) If redistribution involved, tune the metric during the redistribution.
>
> Thanks again for your time.
> Ed.
>
>
> On 9/14/05, John Matus <john_matus@hotmail.com> wrote:
> >
> > i guess i should have said "equal-metric" paths, and i probably should
> > have
> > read scott's response first :)
> >
> >
> > >From: "John Matus" <john_matus@hotmail.com>
> > >Reply-To: "John Matus" <john_matus@hotmail.com>
> > >To: swm@emanon.com, tytanx@gmail.com, ccielab@groupstudy.com
> > >Subject: RE: EIGRP load balance
> > >Date: Wed, 14 Sep 2005 19:38:17 +0000
> > >
> > >yes, by default eigrp does load-balance for equal-cost paths. it's the
> > >unequaual cost paths you have to worry about....
> > >
> > >
> > >>From: "Scott Morris" <swm@emanon.com>
> > >>Reply-To: "Scott Morris" <swm@emanon.com>
> > >>To: "'Ed Tan'" <tytanx@gmail.com>, "'Group Study'"
> > >><ccielab@groupstudy.com>
> > >>Subject: RE: EIGRP load balance
> > >>Date: Wed, 14 Sep 2005 09:07:28 -0400
> > >>
> > >>So... Ask yourself some questions.
> > >>
> > >>1. What does the variance command do?
> > >>2. If I understand what the variance command does, where do I find the
> > >>information that it would use to influence its decisions?
> > >>3. Once this is found, you have the answer to what needs to change (and
> > >>which direction) in order to make this work. Go to 'router eigrp 1' and
> > >>use
> > >>the '?' command to assist in looking for things that will manipulate
> > what
> > >>you want to.
> > >>
> > >>Post your findings and reasons and we'll go from there!
> > >>
> > >>DocCD may assist as well.
> > >>
> > >>Scott
> > >>
> > >>-----Original Message-----
> > >>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Ed
> > >>Tan
> > >>Sent: Wednesday, September 14, 2005 2:52 AM
> > >>To: Group Study
> > >>Subject: EIGRP load balance
> > >>
> > >>Hi group,
> > >>
> > >>I am just wondering is it anyway to configure EIGRP load balance
> without
> > >>using "variance" command?
> > >>
> > >>TIA,
> > >>Ed
> > >>
> > >>_______________________________________________________________________
> > >>Subscription information may be found at:
> > >>http://www.groupstudy.com/list/CCIELab.html
> > >>
> > >>_______________________________________________________________________
> > >>Subscription information may be found at:
> > >>http://www.groupstudy.com/list/CCIELab.html
> > >
> > >_________________________________________________________________
> > >Dont just search. Find. Check out the new MSN Search!
> > >http://search.msn.click-url.com/go/onm00200636ave/direct/01/
> > >
> > >_______________________________________________________________________
> > >Subscription information may be found at:
> > >http://www.groupstudy.com/list/CCIELab.html
> >
> > _________________________________________________________________
> > Is your PC infected? Get a FREE online computer virus scan from McAfee(r)
> > Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Sun Oct 02 2005 - 14:40:15 GMT-3