>The limit on Cisco routers is 4 Serials in the same subnet... but my
>question is:
>
>What problem does that solve? Why would I want/need to do that?
My gut tells me that this is not really a planned-for limit, and sort
of happened.
>
>Any thoughts?
As a wild guess, it might be to allow the support of NBMA
hub-and-spoke subnets that have more than one hub interface. Not sure
how useful this would be -- I tend to think that the marginal
improvement in reliability of having more than one interface of the
same router in the same subnet is very small. If I need multiple
hubs, multiple routers become appropriate.
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