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smart load balancing two unstacked switches

Posted on 2014-01-10
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Last Modified: 2014-01-10
researching the internet but getting opposite answers:

two unstacked switches (but trunked)
1 Windows server 2008R2 with 4x 331FLR Broadcom cards

goal: when one switch, card or cable fails still connectivity

Broadcam BASP software for teaming

Smart load balancing or LACP

My opinion: for LACP to configure I need the two switches to be stacked and act as one. This is not possible anymore.

My opinion:

Smart Load Balancing and Failover should work, even if connected to two unstacked switches without problems if one of the switches failes. One ip only on the team of 4 nics.

Do you guys agree although LACP may be more professional. It is not complete clear what advantage LACP would bring but stacking the switches is due to business not an option anymore.
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Question by:ict ict
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Steve earned 500 total points
ID: 39771118
LACP isn't going to work un unstacked, standalone switches so that's off the list, even though it is much better in many ways than 'switch independant' teaming.

with unstacked switches, switch independent teaming basically means all the NICs spoof their MAC address. On basic systems, only one of the NICS is active at one time (meaning no improvement of bandwidth) and in some better ones all ports spoof the same MAC and let the switch randomly send traffic to each NIC as it sees fit.

It does work fine, but LACP is much more efficient and can do much more than random load balancing.
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Author Comment

by:ict ict
ID: 39771276
I forget to add that the two switches are trunked with utp cables, but not stacked. I will try next week and pull out the power off one switch and see if server is still reachable by the other switch.
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LVL 27

Expert Comment

by:Steve
ID: 39771321
Don't doubt yourself. you've already said they weren't stacked... :-)
 
as its not LACP, you may find a brief drop occurs, but it's worth a try. If it doesn't work check your teaming config.
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