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Re: LAGing backbone links
From: Nick Hilliard <nick () foobar org>
Date: Tue, 05 Apr 2011 20:05:59 +0100

On 05/04/2011 16:30, Shane Amante wrote:
1)  Be mindful of the number of component-links you can put into a
single LAG.  This varies by platform.  In general, for higher-end
routers/switches the minimum number of component-links in a single
LAG is 16.

Some older equipment will unequally prefer certain links over others, depending on the number of members in the LAG. I.e. a 2-member LAG might load balance equally under ideal conditions, but a 3-member LAG might naturally load balance 2:2:1. This is particularly a problem if you have, say an 8-member LAG and you lose a single member, which could drop your overall throughput to the total of 4 members.

Nick


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