RE: OSPF Adv Tech Labs, problem:strange area range command

From: subodh.rawat@wipro.com
Date: Thu Aug 23 2007 - 08:34:34 ART


Please paste ur configuration of R4, R1 and R6.

Subodh

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
sirus MOGHADASIAN
Sent: Thursday, August 23, 2007 3:52 PM
To: Cisco certification
Subject: OSPF Adv Tech Labs, problem:strange area range command issue

I have a simple scenario. (it's diagram is as same as advance
technologies lab of IE ,OSPF,NSSA area ABR External prefix Filtering)

           |-----R4
 R6 -----| ----frame-Relay ---R5
           |-----R1

R6 connects to R4 and R1 through ethernet segment (area 1)
 ,and R4 ,R1 ,R5 are connected by frame-relay cloud (R5 hub and R4 ,R1
spoke) (area 0)

R6 configuration:
int loopback ip 6.6.6.6/32 .
ip route 120.0.0.1 255.255.255.255 null0

router ospf 1
redistribute static
area 1 nssa

when I configure "area 1 range 6.6.6.6 255.255.255.255 not-advertised"
on
R4 something very strange happens.

6.6.6.6 removed from R5 as expected, but I 120.0.0.1 removed as well
!!!
and no longer I cannot see 120.0.0.1 as my external route.

I configured area 1 as nssa (R1 R4 R6).

why my external route disappears????

by the way if i do not configure area 1 as nssa every thing works fine

thanks



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