From: Colin Barber (Colin.Barber@xxxxxxxxxxxxxx)
Date: Sat Jun 29 2002 - 17:39:52 GMT-3
I always use the address of the interface and 0.0.0.0 mask on production
networks. That way if you need to change the area of interface only that one
is affected. Also looking at the configs it is easy to see what interfaces
are in what areas without having to work out masks.
The only down side is it takes more time to type multiple lines.
Colin
-----Original Message-----
From: Ahmed Al-Ghawas [mailto:ghawas@batelco.com.bh]
Sent: 29 June 2002 20:37
To: ccielab@groupstudy.com
Subject: OSPF wildcard bits
Guys,
I am really getting confused!
>From what I understood from "CCIE Practical Studies" book that when using
the
network command, that you ought to be precise in the extent that you would
add
the interface ip address and not advertise the whole subnet mask!
For example:
R1
S0:10.1.128.1/24
|
|
S0:10.1.128.2/24
R2
S1:10.1.80.1/24
|
|
S1:10.1.80.3/24
R3
R1 config:
router ospf 2001
network 10.1.128.1 0.0.0.0 area x (and not; network 10.1.128.0 0.0.0.255
area
x!!)
R2 config:
router ospf 2001
network 10.1.128.2 0.0.0.0 area x (and not; network 10.1.128.0 0.0.0.255
area
x!!)
network 10.1.80.1 0.0.0.0 area x (and not; network 10.1.80.0 0.0.0.255 area
x!!)
R3 config:
router ospf 2001
network 10.1.80.3 0.0.0.0 area x (and not; network 10.1.80.0 0.0.0.255 area
x!!)
I really need to stick to one concept and understand why this book doest it
differently then the other and avoid loosing marks for such stupid thing in
the real lab!!
Any input is much appreciated
Ahmed
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