Security Basics mailing list archives

RE: Load Balancing on AIX system.


From: Kiran Maraju <kiran () isac ernet in>
Date: Thu, 16 Oct 2003 11:15:21 +0530



 Hi Mahesh,

            Thanks for the Document.
i have already gone through "EtherChannel" configuration.
That attached document, helps to configure as Network Interface Backup connected
to multiple ISP. when one adapter(link) fails load will be balanced to the other
adapter . i.e. one adapter is active at any given time. In fact, My problem is
to configure ether channel in round robin mode such that out going packets
should follow more than one ethernet adapter in equal order connected to
Multiple ISPs ( (both links should be active).

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 situation 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 



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Quoting "R. Maheswaran" <MaheswaranR () catsglobal co in>:

Hi Kiran,

Native AIX itself supports "Etherchanneling" ,,,this feature helps you
with this situation ..but only in AIX5.X

here is the complete step-by-step procedure to configure that same.

(See attached file: etherchannel configuration in AIX51-03.doc)

let me know if u have any Qs.

Mahesh

-----Original Message-----
From: Kiran Maraju [mailto:kiran () isac ernet in]
Sent: Tuesday, October 14, 2003 5:15 PM
To: security-basics () securityfocus com
Subject: Load Balancing on AIX system.


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.


Thanks in Advance

  Regards,

   kiran 

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