[j-nsp] Conditionally Generating Default Routes

Saku Ytti saku at ytti.fi
Fri May 8 16:40:40 EDT 2015


On (2015-05-08 11:39 -0700), Bill Blackford wrote:

Hey,

> Is there a BCP in this scenario? A stable (non changing) CIDR block? Does
> Team CYMRU offer this? Is there a better solution to achieve the same
> objective?

I'm not entirely sure what is the scenario. Is the scenario one where you have
PE and CE, where PE may become isolated and if such, it should not inject
default to CE?
If this is the scenario, then you might want to consider one of these two
options:

a) generate your aggregate networks in core, ask customer to static default
route to specific network. Once your PE becomes isolated, the prefix is gone,
and CE's static route won't anymore route to you.

b) generate static route in core boxes, via lets say discard route.

-- 
  ++ytti


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