From: Chuck Church (cchurch@xxxxxxxxxxxx)
Date: Wed Aug 08 2001 - 01:17:43 GMT-3
What order are they evaluated in then? I was assuming top down, so the
first statement would put the loopback interface into area 0. The second
statement would match both other interfaces, putting them in area 1.
Chuck
-----Original Message-----
From: Chuck Larrieu [mailto:chuck@cl.cncdsl.com]
Sent: Tuesday, August 07, 2001 11:11 PM
To: Chuck Church; ccielab@groupstudy.com
Subject: RE: Two areas don't make an ABR?
the interfaces are placed into areas based on the order of the network
statements. once a match is made ( just like access-lists ) the processing
stops.
answer C 192.168.1.1 0.0.255.255 area 0.0.0.1 places both interfaces into
area 1. processing stops. nothing ends up in area 0. therefor the router is
not an ABR. QED
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Chuck Church
Sent: Tuesday, August 07, 2001 7:21 PM
To: 'ccielab@groupstudy.com'
Subject: Two areas don't make an ABR?
Gang,
Got this email today from Certification Zone. I'm not quite sure I
agree with the answer. Why doesn't answer 'C' meet the requirement?
Chuck
P.S. I don't have a Certification Zone subscription, otherwise I'd go read
Howard's explanation!
7) This Week's CCIE Challenge Question
==============================================
Which OSPF configuration fragment will cause abr1 to function as an
area border router?
hostname abr1
int loop0
ip addr 10.0.0.1 255.255.255.248
int e0
ip addr 192.168.0.1 255.255.255.0
int e1
ip addr 192.168.1.1 255.255.255.0
a) router ospf 1
network 192.168.0.0 0.0.0.0 area 0.0.0.0
network 192.168.1.0 0.0.0.0 area 0.0.0.1
b) router ospf 1
network 192.168.1.1 0.0.255.255 area 0.0.0.1
network 192.168.0.1 0.0.0.0 area 0.0.0.0
c) router ospf 1
network 10.0.0.1 0.0.0.0 area 0.0.0.0
network 192.168.1.1 0.0.255.255 area 0.0.0.1
network 192.168.0.1 0.0.0.0 area 0.0.0.0
d) router ospf 1
network 10.0.0.1 0.0.0.0 area 0.0.0.0
network 192.168.1.1 0.0.0.0 area 0.0.0.1
network 192.168.0.1 0.0.0.0 area 0.0.0.0
The answer to this week's question can be found at:
http://www.CertificationZone.com/QOW/1/ES/ccie-a.html
Chuck Church
CCNP, CCDP, MCNE, MCSE
Sr. Network Engineer
Magnacom Technologies
140 N. Rt. 303
Valley Cottage, NY 10989
845-267-4000 x218
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