From: Dennis J. Hartmann (dennisjhartmann@hotmail.com)
Date: Fri Apr 22 2005 - 19:11:52 GMT-3
I've been noticing in most scenarios that the OSPF routing protocol is
being advertised with the wildcard mask for the interface in which it's
being advertised.
Example
Interface Fast 0/0
ip address 172.16.20.2 255.255.255.128 (/25)
router ospf 1
network 172.16.20.0 0.0.0.127 area 3
I would never do it this way, I would specify the exact IP Address of
the interface and a wildcard mask of 0.0.0.0 as shown below:
router ospf 1
network 172.16.20.2 0.0.0.0 area 3
The scenario does not call for any "special type of advertising in any
way. Is there a valid reason why I would ever use the wildcard mask that
the NMC answer is giving?
Sincerely,
Dennis J. Hartmann
White Pine Communications
CCSI#23402/CCIP/CCNP/CCDP/CCNA/CCDA
Cisco IP Voice Support & Design Specialist
Cisco Optical, VPN & IDS Specialist
MCSE
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