From: Alexander Arsenyev (GU/ETL) (alexander.arsenyev@ericsson.com)
Date: Fri Aug 20 2004 - 10:53:03 GMT-3
Hello,
When Serial0/0 is UP and BRI0/0 is DOWN (initial state) You are getting 150.2.5.5/32 as OSPF inter-area route (O IA).
When Serial0/0 and BRI0/0 are both UP (after You re-enable Serial0/0) You are getting 150.2.5.5/32
as OSPF intra-area route :
O 150.2.8.8/32 [110/1573] via 142.2.45.5, 00:04:08, BRI0/0
There is no way OSPF inTRA-area route could be displaced/superceded by OSPF inTER-area route, You have to rethink
the solution.
HTH,
Cheers
Alex
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
marc van hoof
Sent: 20 August 2004 13:44
To: ccielab@groupstudy.com
Subject: dialer watch-list - please help !!
Hey all,
I'm having immense problems with a dialer watch list. R4 and R5 are
connected via ISDN and are both on a frame-relay cloud. R4 is watching R5's
loopback address in the routing table with dialer watch.
So R4 is watching for 150.2.5.5 in the routing table, which is there:
Rack2R4#show ip route 150.2.5.5
Routing entry for 150.2.5.5/32
Known via "ospf 1", distance 110, metric 65, type inter area
Last update from 142.2.0.5 on Serial0/0, 01:28:52 ago
Routing Descriptor Blocks:
* 142.2.0.5, from 150.2.5.5, 01:28:52 ago, via Serial0/0
Route metric is 65, traffic share count is 1
Rack2R4#
Then I shut down the serial 0/0 interface to get rid of the route and induce
the dialer to become active:
Rack2R4#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack2R4(config)#int serial 0/0
Rack2R4(config-if)#shut
Rack2R4(config-if)#
*Mar 1 02:31:16.955: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on Serial0/0
from FULL to DOWN, Neighbor Down: Interface down or detached
*Mar 1 02:31:16.955: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.3.3 on Serial0/0
from FULL to DOWN, Neighbor Down: Interface down or detached
*Mar 1 02:31:16.963: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:31:16.963: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:31:16.963: DDR: primary DOWN
*Mar 1 02:31:16.963: DDR: Dialer Watch: Dial Reason: Primary of group 1
DOWN
*Mar 1 02:31:16.963: DDR: Dialer Watch: watch-group = 1,
*Mar 1 02:31:16.963: DDR: dialing secondary by dialer map 150.2.5.5
on BR0/0
*Mar 1 02:31:16.963: BR0/0 DDR: Attempting to dial 8358662
*Mar 1 02:31:17.311: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to
up
*Mar 1 02:31:17.311: BR0/0:1 DDR: Dialer Watch: resetting call in progress
*Mar 1 02:31:17.375: BR0/0:1 DDR: dialer protocol up
*Mar 1 02:31:18.363: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0/0:1, changed state to up
*Mar 1 02:31:18.955: %LINK-5-CHANGED: Interface Serial0/0, changed state to
administratively down
*Mar 1 02:31:19.955: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial0/0, changed state to down
*Mar 1 02:31:23.311: %ISDN-6-CONNECT: Interface BRI0/0:1 is now connected
to 8358662 ROUTER5
*Mar 1 02:31:26.379: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on BRI0/0
from LOADING to FULL, Loading Done
Rack2R4(config-if)#exit
Rack2R4(config)#exit
Rack2R4#show ip
*Mar 1 02:31:33.019: %SYS-5-CONFIG_I: Configured from console by console
Rack2R4#show ip route 150.2.5.5
% Subnet not in table
*Mar 1 02:31:42.671: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on OSPF_VL1
from LOADING to FULL, Loading Done
!
There is an ospf virtual-link set up over the dialer, to ensure that R4
maintains a connection to area 0 (the area of the isdn connection is area
45), and there is a distribute-list route-map applied to the ospf instance
on R4 inbound to ensure that R4 doesn't receive the "watched route" over the
isdn circuit.
Rack2R4#show ip route 150.2.5.5
% Subnet not in table
Rack2R4#
So far so good.
Now watch this. I re-enable the serial 0/0 interface and the ospf sessions
across it come back up... but no route to 150.2.5.5
Rack2R4#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack2R4(config)#int serial 0/0
Rack2R4(config-if)#no shut
Rack2R4(config-if)#
*Mar 1 02:34:45.287: %LINK-3-UPDOWN: Interface Serial0/0, changed state to
up
*Mar 1 02:34:46.287: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial0/0, changed state to up
Rack2R4(config-if)#
*Mar 1 02:35:17.311: BR0/0:1 DDR: idle timeout
*Mar 1 02:35:17.311: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:35:17.311: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:35:17.311: DDR: primary DOWN
Rack2R4(config-if)#
*Mar 1 02:35:24.315: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.3.3 on Serial0/0
from LOADING to FULL, Loading Done
Rack2R4(config-if)#
*Mar 1 02:35:35.163: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on Serial0/0
from LOADING to FULL, Loading Done
Rack2R4(config-if)#do show ip route ospf
142.2.0.0/16 is variably subnetted, 9 subnets, 2 masks
O IA 142.2.5.0/24 [110/1572] via 142.2.45.5, 00:00:26, BRI0/0
O 142.2.0.5/32 [110/64] via 142.2.0.5, 00:00:26, Serial0/0
O 142.2.0.3/32 [110/64] via 142.2.0.3, 00:00:26, Serial0/0
O 142.2.58.0/24 [110/1572] via 142.2.45.5, 00:04:08, BRI0/0
150.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
O 150.2.8.8/32 [110/1573] via 142.2.45.5, 00:04:08, BRI0/0
Rack2R4(config-if)#
It stays like this and consequently doesn't shut down the isdn link due to
the dialer watch still being active. if I manually shutdown the bri
interface, the route entry appears again.
Rack2R4(config-if)#int bri 0/0
Rack2R4(config-if)#shut
Rack2R4(config-if)#
*Mar 1 02:37:33.447: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to
down
*Mar 1 02:37:33.447: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0, TEI
120 changed to down
*Mar 1 02:37:33.447: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0, TEI
121 changed to down
*Mar 1 02:37:33.451: BR0/0:1 DDR: disconnecting call
*Mar 1 02:37:33.451: BR0/0:1 DDR: Dialer Watch: resetting call in progress
*Mar 1 02:37:33.451: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:37:33.451: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:37:33.451: DDR: primary DOWN
*Mar 1 02:37:33.451: DDR: Dialer Watch: Dial Reason: Secondary of group 1
DOWN
*Mar 1 02:37:33.451: DDR: Dialer Watch: watch-group = 1,
*Mar 1 02:37:33.451: DDR: Dialer Watch: No free dialer on BR0/0
*Mar 1 02:37:33.451: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on BRI0/0
from FULL to DOWN, Neighbor Down: Interface down or detached
*Mar 1 02:37:33.463: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to
do
Rack2R4(configwn
*Mar 1 02:37:33.467: BR0/0:1 DDR: disconnecting call
*Mar 1 02:37:33.467: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:37:33.467: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:37:33.467: DDR: primary DOWN
*Mar 1 02:37:33.467: DDR: Dialer Watch: Dial Reason: Secondary of group 1
DOWN
*Mar 1 02:37:33.467: DDR: Dialer Watch: watch-group = 1,
*Mar 1 02:37:33.467: DDR: Dialer Watch: No free dialer on BR0/0
*Mar 1 02:37:33.499: %LINK-5-CHANGED: Interface BRI0/0, changed state to
administratively down
*Mar 1 02:37:33.499: %LINK-3-UPDOWN: Interface BRI0/0:2, changed state to
down
*Mar 1 02:37:33.499: BR0/0:2 DDR: disconnecting call
*Mar 1 02:37:33.499: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:37:33.499: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:37:33.499: DDR: primary DOWN
*Mar 1 02:37:33.499: DDR: Dialer Watch: Dial Reason: Secondary of group 1
DOWN
*Mar 1 02:37:33.499: DDR: Dialer Watch: watch-group = 1,
*Mar 1 02:37:33.499: DDR: Dialer Watch: No free dialer on BR0/0
*Mar 1 02:37:34.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0/0:1, changed state to down-if)#
Rack2R4(config-if)#do show ip r
*Mar 1 02:37:38.951: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on OSPF_VL1
from FULL to DOWN, Neighbor Down: Interface down or detached
Rack2R4(config-if)#do show ip route 150.2.5.5
Routing entry for 150.2.5.5/32
Known via "ospf 1", distance 110, metric 65, type inter area
Last update from 142.2.0.5 on Serial0/0, 00:00:06 ago
Routing Descriptor Blocks:
* 142.2.0.5, from 150.2.5.5, 00:00:06 ago, via Serial0/0
Route metric is 65, traffic share count is 1
Rack2R4(config-if)#
*Mar 1 02:37:48.959: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:37:48.959: DDR: network 150.2.5.5/255.255.255.255 UP,
*Mar 1 02:37:48.963: DDR: primary UP
Rack2R4(config-if)#
Configs are attached below.
Thanks heaps for any help,
-marc.
!
interface Serial0/0
ip address 142.2.0.4 255.255.255.0
encapsulation frame-relay
ip ospf authentication
ip ospf authentication-key CISCO
ip ospf network point-to-multipoint
ip ospf flood-reduction
frame-relay map ip 142.2.0.3 413 broadcast
frame-relay map ip 142.2.0.5 405 broadcast
no frame-relay inverse-arp
frame-relay lmi-type cisco
!
interface BRI0/0
ip address 142.2.45.4 255.255.255.0
encapsulation ppp
dialer map ip 142.2.45.5 name ROUTER5 broadcast 8358662
dialer map ip 150.2.5.5 name ROUTER5 broadcast 8358662
dialer watch-group 1
isdn switch-type basic-ni
isdn spid1 .
isdn spid2 .
ppp authentication eap callin
ppp eap identity ROUTER4
ppp eap password 0 CISCO
ppp eap local
!
router ospf 1
router-id 150.2.4.4
max-metric router-lsa on-startup 600
log-adjacency-changes
area 45 virtual-link 150.2.5.5 authentication message-digest
area 45 virtual-link 150.2.5.5 message-digest-key 1 md5 CISCO
area 45 virtual-link 150.1.5.5
network 142.2.0.4 0.0.0.0 area 345
network 142.2.45.4 0.0.0.0 area 45
network 150.2.4.4 0.0.0.0 area 45
distribute-list route-map FILTER_R5_LOOPBACK in
!
ip prefix-list R5_LOOPBACK seq 5 permit 150.2.5.5/32
!
dialer watch-list 1 ip 150.2.5.5 255.255.255.255
dialer-list 1 protocol ip permit
!
route-map FILTER_R5_LOOPBACK deny 10
match ip address prefix-list R5_LOOPBACK
match interface BRI0/0
!
route-map FILTER_R5_LOOPBACK permit 20
!
!
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