From: kasturi cisco (kasturi_cisco@hotmail.com)
Date: Tue Mar 04 2003 - 19:07:35 GMT-3
Gerry,
I am surprised how it works without the dialer map statement for the
watched route, bcoz when i have tried it does not work without it ? Are
there any situations where this should be used Vs not used. when i did it
worked only after adding the additonal dialer map.
Can anyone add some expert comments on this.
Thanks,
Good Luck,[IMAGE]
Kasturi.
>From: Gerry Hilton >Reply-To: Gerry Hilton >To: adz >CC: >Subject: Re:
Dialer watch - BRI interface won't go down when primary is back up >Date:
Tue, 04 Mar 2003 14:27:14 -0500 > >Thanks! Your suggestion did work. The
reason that I included the >dialer map statement for the watched route is
that is what my Solie book >plus the Cisco CD said to do. For example,
the following is an excerpt >from the Cisco CD: > >interface BRI0 > ip
address 172.20.10.2 255.255.255.0 >!IP address for the BRI interface
(backup link). > encapsulation ppp > dialer idle-timeout 30 >!Idle
timeout(in seconds)for this backup link. >!Dialer watch checks the status
of the primary link every time the >!idle-timeout expires. > dialer
watch-disable 15 >!Delays disconnecting the backup interface for 15
seconds after the >!primary interface is found to be up. > dialer map ip
172.20.10.1 name maui-nas-05 broadcast 5551111 >!Dialer map for the BRI
interface of the remote router. >* dialer map ip 172.22.53.0 name
maui-nas-05 broadcast 5551111 >!Map statement for the route/network being
watched by the >!dialer watch-list command. >!This address must exactly
match the network configured with the >!dialer watch-list command. >!When
the watched route disappears, this dials the specified phone number.* >
dialer watch-group 8 >!Enable Dialer Watch on this backup interface.
>!Watch the route specified with dialer watch-list 8. > dialer-group 1
>!Apply interesting traffic defined in dialer-list 1. > isdn switch-type
basic-ni > isdn spid1 51255522220101 5552222 > isdn spid2 51255522230101
5552223 > ppp authentication chap >!Use chap authentication. > >I'm very
grateful for your help! > >Gerry > >adz wrote: > > >Hi, > > > >I'ma bit
confused as to why you have a dialer map statment for 15.5.5.5, > >the
problem in having this, is that the router asumes that this address is >
>owned by the remote router. > > > >the dialer watch method will cause
your router to dial, if the route is > >missing, you don't need the extra
dialer map. > > > >consider the following: > >interface BRI0 > > ip
address 14.40.0.4 255.255.255.0 > > encapsulation ppp > > dialer
idle-timeout 10 > > dialer watch-disable 2 > > dialer string 8358662 > >
dialer watch-group 8 > > dialer-group 1 > > isdn switch-type basic-ni > >
isdn spid1 0835866101 > > isdn spid2 0835866301 > >! > > > >this should
make it work ok > > > > > >-----Original Message----- > >From:
nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of > >Gerry
Hilton > >Sent: 04 March 2003 18:22 > >To: ccielab@groupstudy.com >
>Subject: Dialer watch - BRI interface won't go down when primary is back
> >up > > > > > >Hi. I know this issue has been raised before as I
searched the > >archives. However, I did not find a solution that solves
the problem > >that I am seeing. > > > >The problem is that the BRI
interface will not drop after the primary > >interface goes back up, as
it thinks that the primary is still down (as > >indicated by debug
dialer). I believe this has to do with the way that > >the routing table
changes after the primary interface is shut down. > > Instead of showing
as via OSPF or EIGRP, it shows as directley > >connected to BRI0.
Bringing the primary interface up again doesn't > >change this. The only
way to fix this is to shut down BRI0, which > >causes the routing table
to change and then dialer debug shows the > >primary as up again. > > >
>The version on each router is Version 12.1(17) > >. > >Thanks for any
help, > > Gerry > > > >Details and config follow: > > > >The route being
watched is 15.5.5.5. It has the appropriate map > >statement under BRI0.
The primary is S0. > > > > > >router4-1750-1#sh ip route > >Codes: C -
connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP > > D -
EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area > > N1 - OSPF
NSSA external type 1, N2 - OSPF NSSA external type 2 > > E1 - OSPF
external type 1, E2 - OSPF external type 2, E - EGP > > i - IS-IS, L1 -
IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS > >inter area > > * -
candidate default, U - per-user static route, o - ODR > > P - periodic
downloaded static route > > > >Gateway of last resort is 14.70.0.7 to
network 0.0.0.0 > > > > 14.0.0.0/8 is variably subnetted, 4 subnets, 2
masks > >C 14.30.0.4/32 is directly connected, Loopback0 > >C
14.40.0.0/24 is directly connected, BRI0 > >O 14.37.0.7/32 [110/2] via
14.70.0.7, 00:02:01, Serial0 > >C 14.70.0.0/24 is directly connected,
Serial0 > > 15.0.0.0/32 is subnetted, 1 subnets > >O 15.5.5.5 [110/2] via
14.70.0.7, 00:02:01, Serial0 > >O*E2 0.0.0.0/0 [110/1] via 14.70.0.7,
00:02:01, Serial0 > > > >Once S0 is shut down, the routing table changes
and remains in this > >state even when S0 is brought back up: > > >
>router4-1750-1#sh ip route > >Codes: C - connected, S - static, I -
IGRP, R - RIP, M - mobile, B - BGP > > D - EIGRP, EX - EIGRP external, O
- OSPF, IA - OSPF inter area > > N1 - OSPF NSSA external type 1, N2 -
OSPF NSSA external type 2 > > E1 - OSPF external type 1, E2 - OSPF
external type 2, E - EGP > > i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS
level-2, ia - IS-IS > >inter area > > * - candidate default, U - per-user
static route, o - ODR > > P - periodic downloaded static route > > >
>Gateway of last resort is not set > > > > 14.0.0.0/8 is variably
subnetted, 2 subnets, 2 masks > >C 14.30.0.4/32 is directly connected,
Loopback0 > >C 14.40.0.0/24 is directly connected, BRI0 > > 15.0.0.0/32
is subnetted, 1 subnets > >C 15.5.5.5 is directly connected, BRI0 >
>router4-1750-1# > > > >debug dialer event and debug dialer packet shows
the primary as down > >even when S0 is brought up: > > > >router4-1750-1#
> >*Mar 2 05:40:44: %OSPF-5-ADJCHG: Process 1, Nbr 14.37.0.7 on Serial0 >
>from LOADING to FULL, Loading Done > >router4-1750-1# > >1d05h: BR0:1
DDR: idle timeout > >1d05h: DDR: Dialer Watch: watch-group = 8 > >1d05h:
DDR: network 15.5.5.5/255.255.255.255 UP, > >1d05h: DDR: primary DOWN >
>router4-1750-1# > >1d05h: BR0 DDR: ip (s=14.40.0.4, d=224.0.0.5), 64
bytes, outgoing > >uninteresting (list 101) > >1d05h: BR0 DDR: sending
broadcast to ip 15.5.5.5 > >1d05h: BR0 DDR: sending broadcast to ip
14.40.0.7 -- succeeded > >router4-1750-1# > >1d05h: BR0:1 DDR: idle
timeout > >1d05h: DDR: Dialer Watch: watch-group = 8 > >1d05h: DDR:
network 15.5.5.5/255.255.255.255 UP, > >1d05h: DDR: primary DOWN >
>router4-1750-1# > >1d05h: BR0 DDR: ip (s=14.40.0.4, d=224.0.0.5), 64
bytes, outgoing > >uninteresting (list 101) > >1d05h: BR0 DDR: sending
broadcast to ip 15.5.5.5 > >1d05h: BR0 DDR: sending broadcast to ip
14.40.0.7 -- succeeded > >router4-1750-1# > > > >Manually shutting down
BRI0 results in the primary (S0) being shown as > >up, although it was
already: > > > >1d05h: BR0:1 DDR: disconnecting call > >1d05h: DDR:
Dialer Watch: watch-group = 8 > >1d05h: DDR: network
15.5.5.5/255.255.255.255 UP, > >1d05h: DDR: primary UP > >*Mar 2
05:41:30: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down >
>1d05h: BR0:2 DDR: disconnecting call > >1d05h: DDR: Dialer Watch:
watch-group = 8 > >1d05h: DDR: network 15.5.5.5/255.255.255.255 UP, >
>1d05h: DDR: primary UP > >*Mar 2 05:41:31: %LINEPROTO-5-UPDOWN: Line
protocol on Interface > >BRI0:1, changed state to down > > > >Configs: >
> > >Calling router: > > > >router4-1750-1#sh ver > >Cisco Internetwork
Operating System Software > >IOS (tm) C1700 Software
(C1700-BNO3R2SV3Y56I-M), Version 12.1(17), > >RELEASE SOFTWARE (fc1) > >
> > > >router4-1750-1#sh ru > >Building configuration... > > > >Current
configuration : 1722 bytes > >! > >version 12.1 > >no service
single-slot-reload-enable > >service timestamps debug uptime > >service
timestamps log datetime > >no service password-encryption > >! >
>hostname router4-1750-1 > >! > >logging buffered 10000 debugging > >! >
>username zz privilege 15 nopassword > >username router7-1750-2 password
0 ipexpert > >! > >! > >! > >! > >memory-size iomem 25 > >ip subnet-zero
> >no ip domain-lookup > >! > >ip audit notify log > >ip audit po
max-events 100 > >ip multicast-routing > >isdn switch-type basic-ni > >!
> >! > >! > >! > >voice-port 2/0 > >! > >voice-port 2/1 > >! > >! > >! >
>! > >interface Loopback0 > > ip address 14.30.0.4 255.255.255.255 > > ip
ospf network point-to-point > >! > >interface Loopback1 > > no ip address
> >! > >interface Serial0 > > ip address 14.70.0.4 255.255.255.0 > >
clockrate 148000 > >! > >interface BRI0 > > ip address 14.40.0.4
255.255.255.0 > > encapsulation ppp > > dialer idle-timeout 10 > > dialer
watch-disable 2 > > dialer map ip 15.5.5.5 name router7-1750-2 broadcast
8358662 > > dialer map ip 14.40.0.7 name router7-1750-2 broadcast 8358662
> > dialer watch-group 8 > > dialer-group 1 > > isdn switch-type basic-ni
> > isdn spid1 0835866101 > > isdn spid2 0835866301 > >! > >interface
FastEthernet0 > > no ip address > > speed auto > >! > >router ospf 1 > >
log-adjacency-changes > > network 14.30.0.3 0.0.0.0 area 0 > > network
14.40.0.0 0.0.0.255 area 0 > > network 14.70.0.0 0.0.0.255 area 0 > >
maximum-paths 6 > >! > >ip classless > >no ip http server > >! >
>access-list 101 deny ospf any any > >access-list 101 permit ip any any >
>dialer watch-list 8 ip 15.5.5.5 255.255.255.255 > >dialer watch-list 1
ip 14.37.0.7 255.255.255.255 > >dialer-list 1 protocol ip list 101 >
>alias exec c conf t > >alias exec rb show run | begin > >alias exec ri
show run | include > >! > >line con 0 > > exec-timeout 120 0 > > logging
synchronous > > login local > >line aux 0 > >line vty 0 4 > >
exec-timeout 120 0 > > login local > >! > >end > > > >Called router: > >
> >router7-1750-2#sh ver > >Cisco Internetwork Operating System Software
> >IOS (tm) C1700 Software (C1700-BNO3R2SV3Y56I-M), Version 12.1(17), >
>RELEASE SOFTWARE (fc1) > >Copyright (c) 1986-2002 by cisco Systems, Inc.
> > > >router7-1750-2#sh ru > >Building configuration... > > > >Current
configuration : 1794 bytes > >! > >version 12.1 > >no service
single-slot-reload-enable > >service timestamps debug uptime > >service
timestamps log uptime > >no service password-encryption > >! > >hostname
router7-1750-2 > >! > >! > >username zz privilege 15 nopassword >
>username router4-1750-1 password 0 ipexpert > >! > >! > >! > >! >
>memory-size iomem 25 > >ip subnet-zero > >no ip domain-lookup > >! > >ip
audit notify log > >ip audit po max-events 100 > >ip multicast-routing >
>isdn switch-type basic-ni > >! > >! > >! > >! > >voice-port 2/0 > >! >
>voice-port 2/1 > >! > >! > >! > >! > >interface Loopback0 > > ip address
14.37.0.7 255.255.255.255 > > ip ospf network point-to-point > >! >
>interface Loopback1 > > no ip address > >! > >interface Loopback2 > > ip
address 15.5.5.5 255.255.255.255 > >! > >interface Serial0 > > ip address
14.70.0.7 255.255.255.0 > >! > >interface BRI0 > > ip address 14.40.0.7
255.255.255.0 > > encapsulation ppp > > dialer idle-timeout 0 > > dialer
map ip 14.40.0.4 name router4-1750-1 broadcast > > dialer-group 1 > >
isdn switch-type basic-ni > > isdn spid1 0835866201 > > isdn spid2
0835866401 > >! > >interface FastEthernet0 > > no ip address > > ip pim
sparse-dense-mode > > ip ospf message-digest-key 1 md5 ipexpert > > ip
ospf priority 0 > > ip cgmp > > speed auto > >! > >router eigrp 1 > >
network 14.0.0.0 > > no auto-summary > > no eigrp log-neighbor-changes >
>! > >router ospf 1 > > log-adjacency-changes > > network 14.37.0.7
0.0.0.0 area 0 > > network 14.40.0.0 0.0.0.255 area 0 > > network
14.70.0.0 0.0.0.255 area 0 > > network 15.5.5.5 0.0.0.0 area 0 > >
network 15.15.15.15 0.0.0.0 area 0 > > default-information originate > >!
> >no ip classless > >ip route 0.0.0.0 0.0.0.0 Loopback0 > >no ip http
server > >! > >access-list 101 deny eigrp any any > >access-list 101
permit ip any any > >dialer-list 1 protocol ip permit > >alias exec c
conf t > >alias exec rb show run | begin > >alias exec ri show run |
include > >! > >line con 0 > > exec-timeout 120 0 > > login local > >line
aux 0 > >line vty 0 4 > > exec-timeout 120 0 > > login local > >! > >end
------------------------------------------------------------------------
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