RE: What use are ospf demand circuits when you have

From: OhioHondo (ohiohondo@columbus.rr.com)
Date: Sun May 11 2003 - 03:31:32 GMT-3


I believe OSPF demand circuits, because they cause the LSA's learned by the
ISDN circuit to be saved, have a quicker convergence -- therefor data
traffice is less disrupted when the primary fails.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Umair Hoodbhoy
Sent: Saturday, May 10, 2003 11:00 PM
To: ccielab@groupstudy.com
Subject: What use are ospf demand circuits when you have dialer-watch?

Hi folks,

If you're using dialer-watch in an OSPF environment, and have the
following lines for interesting traffic:

access-list 101 deny ospf any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101

then why would you want to configure OSPF Demand Circuits? Shouldn't the
first statement of access-list 101 do the same thing i.e. deny OSPF
Hellos and LSAs from bringing up the link?

Thanks.

-- Umair



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