From: Feldman, Jim (Jim.Feldman@amex.com)
Date: Wed Oct 26 2005 - 11:30:49 GMT-3
Hey Simon,
Did you try using other ospf network types? And, have the same problem?
Off-hand, I don't recall, but what's the default netowrk type for BRI
interfaces?
Jim
-----Original Message-----
From: simon hart [mailto:simon@harttel.com]
Sent: Wednesday, October 26, 2005 10:27 AM
To: Group Study
Subject: ISDN will not stay down
Hi all,
I have a problem with keeping ISDN in the following configuration. I have
created a non-broadcast area between R4 and R5 for Ospf and also create ospf
demand circuit on R5, however the circuit never goes down. It seems that
demand circuit does not like this typr of config.
Any ideas?
R5 config
interface BRI0/0
ip address 129.1.45.5 255.255.255.248
ip ospf network non-broadcast
ip ospf demand-circuit
dialer map ip 129.1.45.4 name Frame_R4 1111
dialer redial interval 10 attempts 3
dialer-group 1
isdn switch-type basic-ni
isdn spid1 2122
router ospf 100
router-id 150.1.5.5
log-adjacency-changes
network 129.1.45.5 0.0.0.0 area 0
network 129.1.54.5 0.0.0.0 area 0
network 129.1.58.5 0.0.0.0 area 0
network 150.1.5.5 0.0.0.0 area 0
neighbor 129.1.45.4
R4 config
interface BRI0
ip address 129.1.45.4 255.255.255.248
ip ospf network non-broadcast
ip ospf priority 0
dialer map ip 129.1.45.5 name Rack1R5 2222
dialer-group 1
isdn switch-type basic-ni
isdn spid1 1211
router ospf 100
router-id 150.1.4.4
log-adjacency-changes
network 129.1.45.4 0.0.0.0 area 0
network 129.1.46.4 0.0.0.0 area 0
network 129.1.54.4 0.0.0.0 area 0
network 150.1.4.4 0.0.0.0 area 0
BRI0:1 - dialer type = ISDN
Idle timer (120 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is data link layer up
Dial reason: ip (s=129.1.45.4, d=129.1.45.5)
Time until disconnect 107 secs
Connected to 2222 (Rack1R5)
Debug IP routing shows no change of routing updates (hence reconvergence is
not keeping the line up)
Neighbor is established
If I look at the packets I can see that R4 and R5 are exchanging hello
packets every 30 seconds.
Oct 26 14:24:09.878: IP: s=129.1.45.4 (local), d=129.1.45.5 (BRI0), len 80,
sending, proto=89
Oct 26 14:24:24.318: IP: s=129.1.45.5 (BRI0), d=129.1.45.4, len 80, rcvd 0,
proto=89
So I guess the question is does ip ospf demand circuit work when the circuit
is configured as non-broadcast??
Thanks
Simon
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