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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