In OSPF unlike DV protocols (including EIGRP) the router should have
COMPLETE vision of the network. So distribute-lists and passive interfaces
can breake all routing at once.

Regards, Ruslan Tchinyakov,
CCNP, CCDP,MCSE

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Olden
Pieterse
Sent: Tuesday, July 18, 2000 7:55 PM
To: 'Evan You'
Cc: '[EMAIL PROTECTED]'
Subject: RE: OSPF On Demand Circuit


Hi there
My 2 cents ...
Try and put passive interface on your bri0 so it doesnt send out routing
updates .
Some updates (routing ???) is bringing up that line .

Hope it helps
Cheers
Olden

-----Original Message-----
From: Evan You [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 18, 2000 5:33 PM
To: [EMAIL PROTECTED]
Subject: OSPF On Demand Circuit


Hey all,

I have two routers in OSPF Area 0 that have ISDN backup connections from one
to the other.

The ISDN config is working great. When the primary FR link goes down, the
ISDN kicks in instantly and it dies when the primary link goes back up. My
dilemma is that even though the primary FR link is up, the ISDN link goes up
every few minutes.

I've configured EIGRP DDR scenarios and had to use Access-list to control
EIGRP traffic over the BRI interface. Is it the same with OSPF?  What can be
causing the ISDN BRI to go up every few minutes?

The routers are currently running:
OSPF
IP
Frame Relay
And nothing else!

interface BRI0
 ip address 212.1.22.34 255.255.255.240
 encapsulation ppp
 ip ospf cost 200
 ip ospf demand-circuit
 bandwidth 64000
 isdn spid1 xxxxxxxxx xxxxx
 dialer idle-timeout 180
 dialer map ip 212.1.22.33 name R2 broadcast xxxxxxx
 dialer hold-queue 75
 dialer-group 1
 no cdp enable
 ppp authentication chap


Thanks,

Evan You - CCNA

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