From: Anthony Sequeira (terry.francona@gmail.com)
Date: Tue Sep 13 2005 - 18:28:31 GMT-3
It seems to be a simple task to load balance traffic on a VLAN basis across
your trunk links if you are dealing with only two switches that you
completely control. For example, if you are forbidden from using port cost,
just make one of your two switches the root for all VLANs and then set the
port priorities apropriately on this upstream switch for each VLAN.
But what if the root of a VLAN you need to load balance is on a third
switch out of your control? Now you can play with port-priority all you want
on your two switches but your configurations will have no effect.
Must we be able to control the root switch election in order to properly
load balance across trunk links using port priority? I have "labbed" this up
- and it seems that we do need this level of control.
Is there another way to control load balancing across trunk links beyond
port cost and port priority? I think not.....
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