Hi all, can anyone tell me if we can load balance at layer 2 ? I have used a nortel smlt solution before, but I see cisco does not do this ? is there any reason, and does etherchannel load balance at layer 2 ?
Cisco switches do not support anything of the sort of SMLT.
If you have two redundant links from your access switches to the 2 distribution switches, the only way to loadbalance and utilize the links is to configure the dist switches in such a way that they are primary root for a set of vlans and secondary for the other
As Aijaz mentions, channeling will L2 load balance between logical switches. (NB: take careful note of which hashing method is used - they often offer several choices.)
A variation of what Narayan suggests, if trying to load balance, again L2, between a logical edge switch and two upstream switches, and if using multiple VLANs, Flexlink would support static load balancing by manual configuration of which VLANs transverse which link.
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