L2 or L3 Load Sharing

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Hi!

Is there anyone who can explain a bit about the differences between layer 2 and layer 3 load sharing?

Why would I choose layer 2 before layer 3 for example?

If there's only multicast on the ports, would it be better to use layer 3?

Any information is greatly appreciated.

Thanks!
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Prinfo

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Posted 4 years ago

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PARTHIBAN CHINNAYA, Alum

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Layer 2 will consider only Mac address for hashing

L3 considers Ip .... If it is multicast with different IP subnets l3 should be good
(Edited)
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Paul

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Hi PARTHIBAN,

Is it Multicast traffic will load shared in a lag???
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rbrt_weiler

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Additionally, when using L3 routing algorithms you can benefit of "equal cost load balancing", which actually distributes traffic based on link load.
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Paul

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Hi Robert,

Could you explain more about L3 routing protocol to "equal path load balancing" for traffic to distributes the load on links. Thanks.
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rbrt_weiler

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Hi Paul,
Just ask Google about it. For example, it leads to this Wikipedia article: http://en.wikipedia.org/wiki/Equal-cost_multi-path_routing
The common routing protocol to use in a LAN is OSPF by the way. Again, Google knows a lot about it.
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Paul

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Thanks anyway Robert, Here i am in the HUB.