From: Rich Collins (nilsi2002@gmail.com)
Date: Mon Nov 05 2007 - 11:18:55 ART
So if I understand correctly the initiating switch "has the say" in how the
load-balancing gets decided (it doesn't have to match a certain reciprocal
arrangement on the other side)?
Looking through various exercises it seemed to me that only one Switch on
the etherchannel was ever configured and the other side was always left in a
default.
-Rich
On 11/4/07, dara tomar <wish2ie@gmail.com> wrote:
>
> Hi Joseph,
>
> The behavior of traffic flow described by you is the default when CEF
> based switching is enabled i.e, this is flow based switching that is
> taking place here for 3550 when src-mac is used!!!
>
>
> Regards,
> Dara
>
> On Nov 4, 2007 6:17 PM, Scott Morris <smorris@ipexpert.com> wrote:
>
> > Like routing, it's a one-way decision. The other side will not care
> > even if
> > configured differently.
> >
> >
> > Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> > JNCIE-M
> > #153, JNCIS-ER, CISSP, et al.
> > CCSI/JNCI-M/JNCI-ER
> > VP - Technical Training - IPexpert, Inc.
> > IPexpert Sr. Technical Instructor
> >
> > A Cisco Learning Partner - We Accept Learning Credits!
> >
> > smorris@ipexpert.com
> >
> > Telephone: +1.810.326.1444
> > Fax: +1.810.454.0130
> > http://www.ipexpert.com
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com ] On Behalf Of
> > Tarun Pahuja
> > Sent: Saturday, November 03, 2007 4:36 PM
> > To: Rich Collins
> > Cc: groupstudy
> > Subject: Re: Basics- Etherchannel load-balancing
> >
> > Rich,
> > The choice depends on a lot of factors namely, what platform?
> > what version of IOS? Load balancing features supported and most
> > important of
> > all, what are you trying to achieve.
> >
> > For example, If you are backing up to a server and would like to perfom
> > etherchannel load balancing in intermediate switches it would not be a
> > good
> > idea to use the destination Mac or IP, it would be more optimal to use
> > source ip address or Mac. Basically, the IOS uses a Hashing algorithm to
> > find out the port it should send the packet to, similar inputs to the
> > hashing algorithm would give the same port number.
> >
> > HTH,
> > Tarun
> >
> > On 11/3/07, Rich Collins <nilsi2002@gmail.com> wrote:
> > > Hi,
> > >
> > > After reading some of the documentation I think that I am still
> > > missing some basics. For example:
> > >
> > > many hosts --SW1 ===== Sw2 ---server
> > > (on same VLAN)
> > >
> > > With 3550's I suppose you would want src-mac on SW1 and then do you
> > need
> > the
> > > reciprocal on SW2 (dst-mac)? Also a big question - what about a 3560
> > on
> > > one side and a 3550 on the other. What type of mixed matrices would
> > work
> > or
> > > are suggested? i.e src-mac and dst-ip
> > >
> > > thanks
> > > Rich
> > >
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