[c-nsp] 3750E as backup edge router default only

Jeffrey G. Fitzwater jfitz at Princeton.EDU
Fri Oct 28 09:31:28 EDT 2011


We would like to try a 3750E as a backup router should we have a catastrophic failure of our current 6500 that has 3 ISP attached.  This would only be used as a temp ISP backup.

The 3750E would only need to connect to one ISP at 1G and only need DEFAULT to peer.


Is there any issues with it acting as a router with apron. 16 subnets?

If I run the 3750E in ROUTER mode vs VLAN mode will there be an issue with the MAC table size being only 3K ROUTE vs 16K VLAN mode?


We are concerned with the size of the ARP and BRIDGING tables possibly maxing out.   Maybe it's not really an issue, but just asking for advise.



We would be using a 3750E because we already have them used elsewhere.



Thanks for any advise.



Jeff Fitzwater
OIT Networking & Communications Systems
Princeton University


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