From: Ali Sheeraz Mehdi (ali.mehdi@atosorigin-me.com)
Date: Thu Jan 04 2007 - 10:33:58 ART
Just my thoughts,
1. From Single source to Many Destinations ---> (DST-MAC or DST-IP)
Since there is only one source sending traffic to many destinations,
load-balancing has to be based on destination, otherwise for the same source
only one port in channel will be used always.
2. From Many Sources to Single Destination ---> (SRC-MAC or SRC-IP)
Since there are many sources sending traffic to a single destination host,
load-balancing has to be based on source, otherwise for same destination
only one port in channel will be used always.
3. From Many Sources to Many Destinations ---> (SRC-DST-MAC or SRC-DST-IP)
This is the case where we actually don't know what is best for switch so
leave it on switch by manually configuring SRC-DST-IP or SRC-DST-MAC to load
balance on its own.
3550 only supports SRC-MAC and DST-MAC mechanisms.
3560 supports all load-balancing mechanisms.
Regards
Ali
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Chee
Chew Leong
Sent: Thursday, January 04, 2007 2:58 PM
To: ccielab@groupstudy.com
Subject: RE: EtherChannel Load Balancing
Here, it discovers more and more minor different behaviour between the two
model of the switch.
"Michy Eika" <cciemaster@shingor.net>
Sent by: nobody@groupstudy.com
01/04/2007 02:40 AM
Please respond to
"Michy Eika" <cciemaster@shingor.net>
To
"'Frank'" <ocsic@web.de>
cc
Subject
RE: EtherChannel Load Balancing
Thnaks.
I'm concerned about most efficent method for load balancing in previous
sample.
According to URL stated below, Dst(3550) and Src(3560) combination seems
to
be
respectable method.
Michy
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Frank
Sent: Thursday, January 04, 2007 12:31 AM
To: Michy Eika
Subject: Re: EtherChannel Load Balancing
Michy Eika schrieb:
Hi,
right, look at the picture in the documentation on the cisco site:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12225see/scg/swe
thchl.htm#wp1275731
Figure 33-3 Load Distribution and Forwarding Methods
I would say, it does not depend on ip or mac based forwarding then using
the
right forwarding src odr destination based on the right side.
Frank
> Thanks for your reply.
>
> [For example]
> many clients -- Cat3560---etherchannel---Cat3550--- few servers
>
> In this case, following configuration would work well efficiently ?
>
> [Cat3560]
> src-dst-ip" or "src-dst-mac
> [Cat3550]
> dst-mac
>
> Michy
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Frank
> Sent: Wednesday, January 03, 2007 8:21 PM
> To: Michy Eika; ccielab@groupstudy.com
> Subject: Re: EtherChannel Load Balancing
>
> Michy Eika schrieb:
>
> Hi,
>
>
> options for etherchannel load balancing differs between 3550 and 3560.
> There are more options for the 3560.
>
> 3550 only MAC based decisions
>
> 3560 ip or MAC based decision
>
> src - dest based is used for many to few hosts
>
> I would say it depends on the question.
>
> Frank
>
>> Hi group!
>>
>> I read following URL and would like to clarify my understainding.
>> http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12225sed/s
>> cg/swe
>> thchl.htm#wp1140955
>>
>> With respect to etherchannel load balancing on Cat3560, generally I
>> think it is best choice to use "src-dst-ip" or "src-dst-mac" base
>> rather than "dst-ip,dst-mac,src-ip,src-mac" base.
>>
>> Is it correct ?
>> Mostly I wonder if we don' t determine to use method based on latter
base
>>
> .
>
>> Michy
>>
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