From: Darren Johnson (dazza_johnson@yahoo.co.uk)
Date: Wed Jan 02 2008 - 11:42:52 ARST
To load-balance from source at SW1 to destinations at SW2, you will need to
configure the etherchannel as:
port-channel load-balance dest-mac
Obviously, the return traffic would need the opposite (source-mac)....
Check it out.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/1
2.2_25_see/configuration/guide/swethchl.html#wp1020011
Dazzler
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Frank CCIE
Sent: 31 December 2007 03:29
To: shiran guez
Cc: WorkerBee; Herbert Maosa; mazhar minhas; ccielab@groupstudy.com
Subject: Re: port-channel load-balance for 3550/3560
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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