Re: 10G wan etherchannel bundling between 12410 routers or betwe
we are speaking of high end routers that are expected to process tens of thousands of flows per second even just differentiating on source and destination ip addresses there should be enough variety in your traffic to use the parallel CEF links in a fair way.
CEF uses an EXOR of ip source and ip destination and an hash seed that changes only when the system is reloaded.
etherchannel can use EXOR of different fields:
MAC SA exor MAC DA
IP SA exor IP DA
L4 SA port exor L4 DA port
but only one of them applies to a type of traffic at a specific time.
Or you expect a few very high volume flows on the links (DR or DB synchronization just to say)
So to answer your question, unless used for connecting two data centers, I don't expect to gain in fairness by using a bundle.
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