From: Earl Aboytes (earl@xxxxxxxxxxxx)
Date: Sun Mar 12 2000 - 06:54:19 GMT-3
I thought that I would share something that I recently discovered. I hope this
isn't obvious to the rest of you.
If you are injecting a distance vector routing protocol into OSPF and ISDN is u
sing OSPF as its routing protocol, a multicast with address 224.0.0.5 (all spf
routers) will keep your circuit up forever. Even with the ip ospf demand-circui
t command this still occurs. OSPF sees these external routes and floods them a
s Type 7 LSA's.
My first thoughts were to configure the offending areas as NSSAs. Area 1 is on
e of the areas but has a virtual link running through it. Is this a concern?
The other area is area 0 which cannot be configured as a NSSA. I was left with
no choice but to configure 224.0.0.5 as uninteresting traffic. Am I right?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Earl Aboytes
Senior Technical Consultant
GTE-Managed Solutions
800-483-5325 x8817
earl.aboytes@telops.gte.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:23:04 GMT-3