Dialer watch-list

Unanswered Question
Aug 2nd, 2007

Hi Guys,

On one of our router we have a frame-relay link and a isdn back up link. We use dialer watch-list. Please find below the configuration.

interface BRI0/0/0

no ip address

encapsulation ppp

dialer pool-member 1

isdn switch-type basic-net3

isdn point-to-point-setup

ppp authentication chap

ppp multilink

interface Dialer0

bandwidth 128

ip address 10.x.x.x x.x.x.x

encapsulation ppp

dialer pool 1

dialer remote-name xxxxxxxxx

dialer idle-timeout 300

dialer string xxxxxxxxxx

dialer hold-queue 30

dialer watch-disable 60

dialer watch-group 1

dialer-group 1

ppp authentication chap

ppp multilink

ppp multilink load-threshold 3 either

dialer watch-list 1 ip 10.206.0.0 255.255.252.0

dialer watch-list 1 ip 10.252.248.39 255.255.255.255

show ip route:

B 10.252.248.39/32 [20/0] via

The problem is when the primary link is back up the isdn line did not disconnect automatically. Is it a bug in the IOS. On this router we are running version 12.4 (3b).

Rgds

I have this problem too.
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kuldeep.kaur Thu, 08/02/2007 - 04:32

interface FastEthernet0/1.10

encapsulation dot1Q 10

ip address 10.x.x.x 255.255.255.0

ip pim dense-mode

no snmp trap link-status

h323-gateway voip bind srcaddr 10.x.x.x

!

interface BRI0/0/0

description ISDN backup to Sydney

no ip address

encapsulation ppp

dialer pool-member 1

isdn switch-type basic-net3

isdn point-to-point-setup

ppp authentication chap

ppp multilink

!

interface Serial0/1/0:0

description Access link to BT MPLS 512K

bandwidth 512

no ip address

encapsulation frame-relay IETF

frame-relay fragment 397 end-to-end

frame-relay lmi-type ansi

max-reserved-bandwidth 95

service-policy output customer_cos

!

interface Serial0/1/0:0.101 point-to-point

description PVC to BT MPLS 512K

bandwidth 512

ip unnumbered Loopback0

frame-relay interface-dlci 101

class FRTS

!

interface Serial0/2/0:23

description PSTN PCCW +852 0700-0999

no ip address

isdn switch-type primary-net5

isdn incoming-voice voice

isdn send-alerting

isdn bchan-number-order ascending

isdn sending-complete

no cdp enable

This is the main config on the router plus the earlier which I have posted.

Tks

spremkumar Thu, 08/02/2007 - 04:40

Hi

How long you are seeing your isdn active ?

I think it should be active for 5minutes based even after the primary comes up thats because of the idle timeout configured over there.

Is it possible to reduce the same to least possible value which you feel can suit your enviroment and check ?

regds

kuldeep.kaur Thu, 08/02/2007 - 07:08

Hi Mate,

If you dont shut down the interface it will remain up for ever. I have see this earlier also for another customer and the isdn bills were huge. Any work around.

Tks

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