From: JianBo.Du (getmo1@126.com)
Date: Sun Feb 04 2007 - 04:45:50 ART
For this topology you attached below, there would be one line been set to
BLK by spanntree. You may enable PVST/RPVST in those switch, and active
different vlan on it. However, it is not actual load balance.
Another way may help on load balance in those switch is use L3 with OSPF,
every switch connected with OSPF COST 1, then, every packet will have two
router path to dest. For example, SW3 will have two paths to SW2 by SW1 and
SW4. Hope this would help your question.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
graham@cisco-engineer.com
Sent: Sunday, February 04, 2007 1:58 AM
To: 'Joe Yohannan'; ccielab@groupstudy.com
Subject: RE: Switch load balancing
Agreed this was my initial thought
But SW1 and SW4 arent directly attached and each are connected to SW2 and
SW3 via a single link, can a port channel be done over multiple hops?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Joe
Yohannan
Sent: 03 February 2007 17:15
To: graham@cisco-engineer.com; ccielab@groupstudy.com
Subject: RE: Switch load balancing
The 3560 offers a "src-dst-ip" option under the port-channel load-balance
command. It sounds to me that that is what the question is looking for.
- Joe
>From: <graham@cisco-engineer.com>
>Reply-To: <graham@cisco-engineer.com>
>To: <ccielab@groupstudy.com>
>Subject: Switch load balancing
>Date: Sat, 3 Feb 2007 17:06:09 -0000
>
>Hi group,
>
>
>
>I'm working on a question which asks to load balance between two switch
>endpoints 1 and 4
>
>
>
>The layout is
>
>
>
> ----------------- SW3------------
>
>SW1< >SW4
>
> ----------------SW2--------------
>
>
>
>Question in its self is not hard but the sting is, where you have a choice
>you must prefer source/destination ip Balancing?
>
>
>
>Now the load balance method that came to mind was a Layer 3 etherchannel
>and
>port-channel load balancing, but I can't see how that would fit in this
>scenario? Should I ignore the bit at the end which stipulates where you
>have
>a choice?
>
>
>
>
>
>Thanks
>
>
>
>Graham
>
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