[j-nsp] Conditional advertising of default routes

[Thomas Salmen]

You could ask your transit providers to send you a default route as well as
full routes?

/t

> 
> I've got a pair of Juniper M7is that handle our internet connectivity.
> At the moment, they are generating default routes via static discard
> configuration, and advertising them into OSPF. Obviously this is less
> than ideal, as if one router's uplink disappears it will continue to
> advertise the default and we'll get blackholed traffic at worst (at
> best, iBGP plugs the gap, but right now that isn't in place).
> 
> With Cisco, in a similar situation, you can do a default-information
> originate route-map blah, where route-map blah just matches a network
> you expect always to be available (I use the RIPE F golden network).
> In this way, if a border routers peering drops, it stops advertising
> the default and traffic gets routed correctly internally.
> 
> I've been searching through the Juniper documentation, but have been
> unable to figure out how to produce the same effect on them.
> 
> Any ideas?
> 
> Thanks in advance,
> Ras
> 
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