From: Huan Pham (Huan.Pham@peopletelecom.com.au)
Date: Thu Jul 17 2008 - 21:17:12 ART
This is an interesting question!
I do not think that Joseph's solution answers the question. This is
because:
For this particular example, as VLAN A is behind R1, SW2 only sees a
single MAC of R1--Fa0/1, and not all MAC of PC in VLAN A. Therefore, it
can not (effectively) do load-balancing based on destination MAC, nor
can it do load-balancing based on source IP (traffic from server in VLAN
C only have one single source IP). Note that switches can only influence
(load-balance) traffic going out, and not traffic coming back.
Similarly, SW1 can not do load-balance based on source MAC, although it
can do load-blance based on source IP.
So my solution is:
SW1: load-balance based on source IP (or source-destination IP)
SW2: load-balance based on destination IP (or source-destination IP)
BTW, Joseph, how do you configure SW1 with both source Mac and Source IP
(assuming you only have IP traffic)?
Regards,
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Joseph Saad
Sent: Monday, 7 July 2008 2:24 AM
To: Cisco certification
Subject: Re: Etherchannel load-balance
in this particular scenario I'd configure
SW1 with source Mac (or Source IP or both)
SW2 with destination Mac (or Source IP or both)
The simple rule is:
You configure the switch "sending out the traffic to the etherchannel"
in a way to suit the destination SW connected hosts.
HTH,
Joseph.
On Fri, Jul 4, 2008 at 7:49 PM, Cisco Addicted
<cisco.addicted@gmail.com>
wrote:
> Dears,
>
> I want to know what is to consider when deciding the ether channel
> load balancing if I may have the following scenario:
>
>
>
>
>
> VLANA-(Fa0/0--R1--Fa0/1)------ SW1 (3560)=== ===SW2 (3560)
> ------(fa0/1-R2----fa0/0) ----- VLAN C
>
>
>
> And considering there is a many users in VLAN-A accessing server on
> VLAN-C, and there is etherchannel trunk configured between SW1 & SW2.
>
>
>
> Thanks in advance.
>
>
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