[c-nsp] Handling redundancy between buildings.

[Kevin Graham]

If you're going to the effort of chopping up that /16, kill the cross-building VLANs. You've already got local redundancy in the stack, no need to involve both buildings in duplicate STP, ARP, etc.

Let each building be its own L2 domain and turn those 10GbE hauls into PtP L3 links (worst case, use a floating static default between the two, though even IP Base should get you RIPv2).

You'll benefit from traffic on both those xconnects (rather that STP blocking one all the time), and each building can get a full 3750's worth of SVIs.


On Apr 30, 2012, at 12:33 PM, Kevin Seich <kseich at gmail.com> wrote:

> I will take a look at that.  32 might just be enough

Either way you go, just be mindful of SDM templates.