ospf design and routing loop issue
Hello INE Users:
This is my first post at INE. Currently I am preparing for the CCIE Lab Exam. I came across below design of OSPF and want to lab it up and see its behavior. Below is the design:
This is a 9 node topology:[View:/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.01.83.99/nssa_5F00_area.zip]
2 areas are configured: Area 0 and Area 1 (NSSA)
REDIST-1 & REDIST-2 are the two routers where redistribution is happening for static routes in ospf
REDIST-1 & REDIST-2 are connected to ROUTER-6 & ROUTER-7 via area 1 interface (passive)
All the routers except ROUTER-6 & ROUTER-7 are part of Area 0 and Area 1 (NSSA) which means that each of these routers is a ABR/ASBR
All the routers except ROUTER-6 & ROUTER-7 have IPVLAN interfaces configured. .1 interface is part of Area 0 and has a high cost. .2 interface is part of Area 1 (NSSA) and has a low cost.
Translator role for Type7 to Type 5 conversion is done by REDIST-2 - this is selected based on highest router id
I would like to take help from INE community and it would be good if we can discuss on this design and its pros and cons if any. Also if this design would call for any routing loop issues for the redistributed routes.
I have attached the topology as well for better understanding.