[j-nsp] Conditional advertising of default routes

[Craig Pierantozzi]

Use the 'generate' route with a combination of a policy to define
the contributor routes you would like:

http://www.juniper.net/techpubs/software/junos/junos74/swconfig74-routing/ht
ml/routing-tables-config50.html

http://www.juniper.net/techpubs/software/junos/junos74/swconfig74-routing/ht
ml/routing-tables-config49.html

regards


On 1/26/06 12:28 AM, "Jee Kay" <jeekay at gmail.com> wrote:

> 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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