I have a question about Cisco GLBP and the 'host-dependent' configuration option (as opposed to round-robin).
With host-dependent load sharing configured
glbp 10 load-balancing host-dependent
...I understand from the documentation that it uses the host MAC address, to fix a host to a specific GLBP router (AVF), but what exactly about the MAC address does it base its calculation on? Is it a simple odd/even (ie for a 2-node GLBP group, do MACs ending in 1,3,5,7 use one gateway, and 2,4,6,8 use the other) or something else?
My scenario is that we have 2 WAN link routers configured in a GLBP group, currently set to the default round-robin mode. Behind these we have 4 host devices, of which 2 have significantly higher bandwidth requirements than the other 2 - so we want to ensure that the 2 high usage ones are kept on separate links so they dont interfere with each other.
Obviously we could just enable the 'host dependent' setting and see what happens, but i very much prefer to know what will happen before making these changes (and unfortunately we do not have spare equipment capable of doing a test-lab equivalent setup at this time).
Many thanks in advance for answers to this one.
Note: I know we could use other approaches such a multiple HSRP groups, however GLBP is fixed in this case, so i need advice regarding GLBP specifically, thanks.