I am trying to find a way to summarize routes "redistributed" from another IGP, say RIP, into OSPF.
For example, if I had an ASBR in Area 0 redistributing 100.100.0.0/24, 100.100.1.0/24, 100.100.2.0/24 and 100.100.3.0/24 from RIP to OSPF, I only want to advertise the 100.100.0.0/22 Type-5 LSA into the backbone.
This is possible in IOS with the use of the "summary-address" command.
So far as I can tell, Junos only does summarization at ABRs using "area-range" or "nssa area-range" commands.
Is this even possible in Junos, to do this on the ASBR itself?
Thanks, that was helpful.
The salient points that I carried away are as follows, can someone verify -
1. No specific IOS equivalent "summary-address" command
2. Create an aggregate/generated route covering the desired routes
3. Instead of importing the IGP routes in the routing policy, import the aggregate/generated route
Would this workflow be the only possible way or does someone have a more streamlined flow?
As of my understanding you are correct.
You could convert the area to nssa and then apply area-range command under the nssa stanza on the ABR, that will summerize external routes.