From: Suryakant P (suryakant.pandian@gmail.com)
Date: Thu Apr 17 2008 - 09:32:58 ART
Hi All,
Routers A ,B and C are connected to the ethernet LAN network.OSPF peering is
established between them and the area is configured as the NSSA area.
Router C acts as the ASBR and Routers A and B have connectivity
to Area 0 and hence act as ABRs.
I have made the router A as the type 7 to type 5 converter(by increasing the
router-id on the A).
Now when C advertises a network(by redistributing into OSPF),both router A
and B receive the TYPE 7 LSA.
A and B will have the TYPE 5 LSA generated by the router A.
*Scenario 1 :* When the forwardaddress in TYPE 5 LSA is set to Router C
router id.
Router A installs N2 route in the routing table but router B installs E2
route in the routing table?Could you please explain the reason behind the
selection of E2 route on the router B.
*Scenario 2 :* When the forwardaddress in TYPE 5 LSA is set to
0.0.0.0(suppress-fa configured on the converter)
Both router A and router B install N2 route to the network advertised.Could
you please explain the reason behind the change in route selection once the
forward has been suppressed.
Thanks
With regards
Suryakant
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