Posted on September 27, 2016 3:03 pm
 |  Asked by Arindam Chatterjee
 |  512 views
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I am having 7050 SX, which interfaces should be used to build MLAG peer

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Posted by Jeremy Georges
Answered on September 27, 2016 3:16 pm

Hello Arindam,

There is no restrictions on which ports you use for MLAG. But a few guidelines:

1. You should port channel at least 2 interfaces. That way you have some redundancy for the MLAG interface.
2. Make sure the link has ample bandwidth for your use case.
In other words, if you have a lot of single homed devices which could place a load on the MLAG cross link, you’ll want to have a ’big enough pipe’ between the MLAG pairs. So a couple of the 40G links would probably be sufficient. Additionally, if you are planning on a redundancy scheme that can count for multiple failures where a heavier load is placed on the cross link, then you’ll need to plan accordingly by using enough interfaces to provide that bandwidth on the cross link.

Hope that helps.

-J

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