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New Member

VPLS - Single broadcast domain


In VPLS, it's emulating a switch which means a single broadcast domain. What effects does it have for EIGRP? Lots of multicast traffic? Scalability is an issue?

New Member

Re: VPLS - Single broadcast domain

In general it will behave exactly the same way as when you configure it in a LAN, now there are some issues to consider:

With VPLS in its "l2 vfi" form, you can setup a point-to-point, point-to-multipoint and full-mesh logical architecture. You should consider this in your EIGRP configuration because you may experience some "split horizon" on point-to-multipoint setup.

Also, depending on how many CEs you are going to be including in your deployment, it is always recommend to tune-up the routing protocol. For example, you may need to consider the hello timers, updates times, "ip bandwidth-percent eigrp percent" and others.


New Member

Re: VPLS - Single broadcast domain

i read from somewhere, for eigrp deployments in a single broadcast domain, it's best to keep the CEs below 20-30. Why is that so? Or how true is this?

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