From: steven.j.nelson@xxxxxx
Date: Mon Apr 29 2002 - 11:08:56 GMT-3
Dan
Agreed, they are 2 totally different technologies, OSPF Demand circuit is
designed to exchange routing links over a dial up or demand circuit and to
keep the link from becoming active when there are hellos to exchange.
Dialer watch is used to watch specific routes and instigate a dialed
connection should a watched route dissapear.
Thanks
Steve
-----Original Message-----
From: DAN DORTON [mailto:DHSTS68@dhs.state.il.us]
Sent: 29 April 2002 14:46
To: ccielab; bedup; stan.zhang; babacard2000
Subject: RE: Ospf demand-circuit
I am not totally convinced there is a good reason to use dialer-watch &
demand circuit at the same time.
Demand circuit will come up when there is a change in topology, or
traffic destined for a network that best suits the path through the dial
interface, but will shut back down when no traffic is flowing.
Dialer-watch will bring up the circuit & keep it up as long as the
network you are watching is no longer in the routing table.
I am thinking why keep the line up if no traffic is surpassing the link
anyways?
>>> "BEDA jain" <bedup@hotmail.com> 04/26/02 06:19PM >>>
Hi Group,
1.when there is a watch list with ospf demand circuit and if that
network in the watch list is down , bri circuit will go up. Am i
right?
2. when there is no watch list and only ospf demand circuit and if
that
network is down then also bri circuit will go up because of change in
tropology. Am i right?
Then what is the advantage of dilaer-watch with ospf demand circuit.
Thanks,
Beda
BEDA PRAKASH JAIN Apartment address 1116 woodway bluff circle cary,nc
27513 9196789188 res 9193922891 work 9195220242 cell >From: "Zhang,
Stan"
>Reply-To: "Zhang, Stan" >To: "'Babacar Diop'" , cciegroup >Subject:
RE:
Ospf demand-circuit >Date: Wed, 24 Apr 2002 14:35:10 -0400 > >Babacar,
>
>1. You would use OSPF demand-circuit with dialer-watch in most
instances. > >2. You do not have to use an access-list to block the
OSPF
traffic if your >topology is stable. Watch out for routing loops
within
your topology, >that'll keep your Demand-circuit bouncing. > > >Stan
Zhang > > > > > >-----Original Message----- >From: Babacar Diop
[mailto:babacard2000@yahoo.com] >Sent: Wednesday, April 24, 2002 1:54
PM
>To: cciegroup >Subject: Ospf demand-circuit > > >Group, > >Can anyone
clarify this for me. Which is true, 1 or 2? > >1)When doing ISDN
backup
wiht OSPF demand-circuit, do >you use it in conjunction with
dialer-watch, >floating-static, backup interface or snapshot routing? >
>
>2)Do you use "ip ospf demand-circuit" only by itself >under the BRI.
If
so then you need then how do you >bring up the line since you have to
deny ospf with an >access-list to keep it form bringing the line up. >
>Thanks for your input >
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