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Static vs LACP
I have been looking online and have not been able to find an answer.
I am installing two 5224 switches and plan on using the four SMF optical connections aggregated together to link them. I was wondering if there is a difference between a static and LACP link once it is up and running. For example, does a staticly declared link use the same load balancing algoritm as the LACP link?
Any insight as to which I should go with would also be apprieciated.
And, if there is no difference in performance why have both as an option?
Steven
GregG1
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812 Posts
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Posted May 26th, 2004 18:00
Both static link aggregation and LACP use the same algorithm. They use an XOR of the source and destination addresses.
The primary reason for using LACP is the ability to configure fail-over links for the link aggregation "trunk". With the 5224, you can configure up to 6 "trunks" with 4 ports each. If you were to use LACP, you could configure more than 4 ports in the "trunk" and the additional ports will stay in a standby mode until on of the active ports fails.
When using static link aggregation, if one of the ports fails, the switch will continue to load-balance with the remaining links. You will simply decrease your bandwidth.