From: shiran guez (shiranp3@gmail.com)
Date: Mon Dec 31 2007 - 04:50:05 ARST
I would leave the default on SW2 and SW3 and set dst-mac on SW1
Assuming you scenario is there is a Ether-channel between
SW1 --> SW2 and SW1 --> SW3
if you have Ether-channel
SW1 and SW2 and then SW2 to SW3
so I would put on SW1 dst-mac and on SW2 src-dest-mac and SW3 remain with
default.
it all depends on the ratio of the source to destination, once you
understand it, it is actually relatively simple.
think on the path of your traffic, know that 1 source to 1 destination will
cross a single link
by default 2 source to 1 destination will load balance..... i think you
should get the point by now :-)
On Dec 31, 2007 5:29 AM, Frank CCIE <frankccie@gmail.com> wrote:
> Hi, Experts,
>
> If there is only one source at SW1 and many destination at SW2, and
> SW3 is between SW1 and SW2. SW3 is 3550.
>
> How to config load-balance in SW3?
>
> Thanks
>
> Frank
>
> On Dec 30, 2007 1:33 PM, shiran guez <shiranp3@gmail.com> wrote:
> > if there is only one source and one destination yes it doesn't meter but
> if
> > there is one source and many destination it dose meter the direction of
> the
> > load balancing as if there is src-mac method on SW1 and SW1 connected to
> SW2
> > and behind SW2 there are many destination, then it doesn't meter all
> traffic
> > will be using one link and not really load balance on the ether-channel
> > bundle but if you set on SW1 dst-mac and the host on SW1 is sending to
> many
> > destinations then there will be load balancing on the ether-channel.
> >
> > so it is important to know the ratio of the traffic source to
> destination,
> > if it is almost the same then you have of the 3560 src-dest-mac.
> >
> > so please Random is your worst enemy as Network Expert!
> >
> >
> >
> >
> >
> > On Dec 30, 2007 7:38 PM, WorkerBee <ciscobee@gmail.com> wrote:
> >
> > > Does it matters if the algo is different from both ends? It can be set
> > > differently at
> > > both ends and thins still work because at any one time, the traffic
> > > stream is send
> > > across only 1 link out of x links in that bundle.
> > >
> > > The switch will still receive the packets correctly. Randomness maybe
> the
> > > best
> > > form of load balancing..
> > >
> > > On Dec 30, 2007 10:47 PM, Herbert Maosa <asawilunda@googlemail.com>
> wrote:
> > > > It gets interesting when the port channel is between a 3550 and a
> 3560.
> > > >
> > > > :-)
> > > >
> > > > Herbert.
> > > >
> > > >
> > > > On Dec 30, 2007 1:33 PM, mazhar minhas <mmgnoc@hotmail.co.uk> wrote:
> > > >
> > > >
> > > > > hi,
> > > > >
> > > > > EXPERTS,
> > > > >
> > > > > i have one Questions here.
> > > > >
> > > > > i m trying to configure load-balance between port-channels.
> > > > >
> > > > > Found 2 commands, and need to confirm if you guys can help please
> > > > > ======
> > > > > there are 2 differnet commands as for as i know .....
> > > > > according to my knowledge.....
> > > > > here they are
> > > > >
> > > > > port-channel load-balance src.mac (this is for 3550)
> > > > >
> > > > > por-chanel load-balance src-dst-ip (this is for 3560)
> > > > >
> > > > > can some one please confirm this....
> > > > >
> > > > > many thanks.
> > > > >
> > > > >
> > > > >
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> >
> >
> >
> > --
> > Shiran Guez
> > MCSE CCNP NCE1
> > http://cciep3.blogspot.com
> > http://www.linkedin.com/in/cciep3
> >
> > _______________________________________________________________________
> >
> > Subscription information may be found at:
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> >
>
-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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