Multilink provides a true load-sharing option as the packets are hashed by the protocol and distributed evenly among the participating links.
CEF also provides load-sharing when using per destination but you will find a link being utilized more than the other. It all depends on the traffic flow and what destination is being used.
For instance, if you are using CEF per destination and you are accessing a Database server, you will find one link by used for that database server traffic flow (same source/destination pair) while using Multilink both links will be used on this traffic flow.
CEF per destination does not require the remote router to be configured with CEF per destination or per packet but with Multilink, you must configure both routers the same - that's its only drawback.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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