From: Roger RPF (rpf@bluemail.ch)
Date: Wed Feb 11 2009 - 10:28:24 ARST
Hi Jared,
In this case, which mode would you use if the switches are 3550's? They only
provide source or destination mac address loadbalancing.
Switch 2 learns only one mac address, the one of BB2, so how can he
differentiate?
R1 <> SW1 <> SW2 <> BB2 ---clients
In the DocCD under the 3550 they write:
"When source-MAC address forwarding is used, load distribution based on the
source and destination IP address is also enabled for routed IP traffic"
But in our case, what does that mean? Does SW2 look in the payload of the
frame? I mean, for switch 2, this traffic Is only switched?
Maybe I missunderstand something....
regards
Roger
-----Urspr|ngliche Nachricht-----
Von: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Im Auftrag von
Jared Scrivener
Gesendet: Dienstag, 10. Februar 2009 14:31
An: 'BALA'; ccielab@groupstudy.com
Betreff: RE: ether channel load balancing
Hey Balavignesh,
Src-dst-ip will give you the best load balancing if applied on both
switches. This will cause the switches to load balance based on a hash of
the source and destination IP for traffic in both directions. For
documentation, check out the 3560 Configuration Guide on the Cisco website.
Cheers,
Jared Scrivener CCIE3 #16983 (R&S, Security, SP), CISSP
Technical Instructor - IPexpert, Inc.
Telephone: +1.810.326.1444
Fax: +1.810.454.0130
Mailto: jscrivener@ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of BALA
Sent: Tuesday, 10 February 2009 1:03 AM
To: <ccielab@groupstudy.com>
Subject: ether channel load balancing
Hi GS,
I've a query reg etherchannel, pls can someone help me understand better.
Router_1 connected to SW1 (3560) and BB2 connected to SW2 (3560). Both
switches have L2 etherchannel between them. If Router_1 is servicing clients
connected to BB2, what is the best load-balancing method.
R1 <> SW1 <> SW2 <> BB2 ---clients
Answers:
SW1 - dst-mac
SW2 - src-dst-ip
Is this correct? I am also looking for a good documentation on etherchannel
load-balancing, if any of you come across, pls share it to the group.
-- Thanks & RegardsBalavignesh R CCNP CCSP CAWLANFE JNCIS - M - FRW JNCIA - SSL - WX - IDP
Blogs and organic groups at http://www.ccie.net
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