Re: Load balancing on AIX system.

From: cbaker@GOODYEAR.COM
Date: Thu Oct 30 2003 - 10:15:28 EST

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NOTE:There is a regression in AIX 5.2 ML02 and AIX 5.2 ML01 with IY46313.
These regressions cause problems with EtherChannel.

There is an e-Fix (48170) for this. Real fix (IY48170) due out soon.

Christopher M. Baker
Senior Technical Support Analyst
DSE/TCO
Goodyear Tire and Rubber Company

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                      Raj Atwal
                      <atwalrs@YAHOO.C To: aix-l@Princeton.EDU
                      OM> cc: (bcc: Chris Baker/NA/GDYR)
                      Sent by: IBM AIX Subject: Re: Load balancing on AIX system.
                      Discussion List
                      <aix-l@Princeton
                      .EDU>

                      10/28/2003 08:58
                      AM
                      Please respond
                      to IBM AIX
                      Discussion List

Hi Kiran,

Question2: Yes, you do need a switch that supports EtherChannel. You will
not be able to do it without one.

Kiran Maraju <kiran@ISAC.ERNET.IN> wrote:
 Hi there,

 Has anyone implemented load balancing on a AIX Host with specifying two
 default gateways of equal cost. though I have'nt managed to locate a
 configuration document as such.

 i want to do balance the load of outgoing packets over more than one
 ethernet cards evenly.

 could u tell me the way to do load balancing on AIX host connected to
 multi links.

 i have 2 Questions 2 ask u.

 Quest (1):

 one adapter configured with IP ( 192.168.0.20 ) connected to one ISP
 (192.168.0.1)
 other adapter configured with IP address( 172.168.0.20) connected to
 different
 ISP{ 172.168.0.1) ,
 such that both adapters configured as a Etherchannel defined should
 distribute
 packets in equal order / Round Robin way .
 How to configure the above situation? any Idea?

 Quest (2) :

 Though, its possible to configure the above sit! uation with
 "Etherchannel"
 setting "Mode" as a " round_robin " mode . but, the adapters should be
 cabled
 with Etherchannel-enabled switch. Is this Etherchannel switch Required?
 can i
 configure without the switch ? i dont want to put a switch after
 etherchannel ?
 how to handle this case to get efficient usage of bandwidth ?

 Regards,

 Kiran Maraju

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