From: marc van hoof (mvh@marcvanhoof.com)
Date: Fri Aug 20 2004 - 10:15:49 GMT-3
Well, I got rid of the filter and put the metric for intra-area routes up to
115
So I have the route via serial 0/0 that is admin distance 110, and I shut
down the serial 0/0 interface, and the dialer comes up, and I get a new
route for 150.2.5.5 via the BRI 0/0 interface with an admin distance of 115.
So I re-enable the serial 0/0 interface, the ospf sessions come back up, but
the 110 admin distance route doesn't replace the 115 admin distance route...
it prefers going over the bri 0/0 link.
Why ?
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, 00:00:04 ago
Routing Descriptor Blocks:
* 142.2.0.5, from 150.2.5.5, 00:00:04 ago, via Serial0/0
Route metric is 65, traffic share count is 1
Rack2R4(config-if)#int serial 0/0
Rack2R4(config-if)#shut
Rack2R4(config-if)#
*Mar 1 02:58:49.123: %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 02:58:49.123: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.3.3 on Serial0/0
from FULL to DOWN, Neighbor Down: Interface down or detached
Rack2R4(config-if)#
*Mar 1 02:58:49.131: DDR: Dialer Watch: watch-group = 1
*Mar 1 02:58:49.131: DDR: network 150.2.5.5/255.255.255.255 DOWN,
*Mar 1 02:58:49.131: DDR: primary DOWN
*Mar 1 02:58:49.131: DDR: Dialer Watch: Dial Reason: Primary of group 1
DOWN
*Mar 1 02:58:49.131: DDR: Dialer Watch: watch-group = 1,
*Mar 1 02:58:49.131: DDR: dialing secondary by dialer map 150.2.5.5
on BR0/0
*Mar 1 02:58:49.131: BR0/0 DDR: Attempting to dial 8358662
*Mar 1 02:58:49.475: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to
up
Rack2R4(config-if)#do show ip route 150.2.5.5
Routing entry for 150.2.5.5/32
Known via "ospf 1", distance 115, metric 1563, type intra area
Last update from 142.2.45.5 on BRI0/0, 00:00:01 ago
Routing Descriptor Blocks:
* 142.2.45.5, from 150.2.5.5, 00:00:01 ago, via BRI0/0
Route metric is 1563, traffic share count is 1
Rack2R4(config-if)#int serial 0/0
Rack2R4(config-if)#no shut
Rack2R4(config-if)#
*Mar 1 03:00:45.063: %LINK-3-UPDOWN: Interface Serial0/0, changed state to
up
*Mar 1 03:00:46.063: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial0/0, changed state to up
Rack2R4(config-if)#
*Mar 1 03:00:49.475: BR0/0:1 DDR: idle timeout
*Mar 1 03:00:49.475: DDR: Dialer Watch: watch-group = 1
*Mar 1 03:00:49.475: DDR: network 150.2.5.5/255.255.255.255 UP,
*Mar 1 03:00:49.475: DDR: primary DOWN
Rack2R4(config-if)#
*Mar 1 03:01:13.447: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.5.5 on Serial0/0
from LOADING to FULL, Loading Done
Rack2R4(config-if)#
*Mar 1 03:01:24.355: %OSPF-5-ADJCHG: Process 1, Nbr 150.2.3.3 on Serial0/0
from LOADING to FULL, Loading Done
Rack2R4(config-if)#do show ip route 150.2.5.5
Routing entry for 150.2.5.5/32
Known via "ospf 1", distance 115, metric 1563, type intra area
Last update from 142.2.45.5 on BRI0/0, 00:03:30 ago
Routing Descriptor Blocks:
* 142.2.45.5, from 150.2.5.5, 00:03:30 ago, via BRI0/0
Route metric is 1563, traffic share count is 1
> -----Original Message-----
> From: Alberto Pasquale [mailto:a.pasquale@tiscalibs.com]
> Sent: Friday, 20 August 2004 11:18 PM
> To: marc van hoof
> Subject: Re: dialer watch-list - please help !!
>
> You must not filter that route. Being OSPF a link state protocol it is not
> wise to filter routes that way.
> Moreover, dialer watch does not need the route to be filtered: it is smart
> enough to differentiate between primary and backup routes.
>
> You must just make sure that the backup route has an higher cost than the
> primary, so that the primary route gets reinstalled when the primary link
> is
> restored.
>
>
> Alberto Pasquale, CCIE No.13515
>
>
> ----- Original Message -----
> From: "marc van hoof" <mvh@marcvanhoof.com>
> To: <ccielab@groupstudy.com>
> Sent: Friday, August 20, 2004 2:44 PM
> 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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This archive was generated by hypermail 2.1.4 : Fri Sep 03 2004 - 07:02:46 GMT-3