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Community Member

ISDN testing

How will i force/test the ISDN link to dial to ensure good link/configuration on both routers.

The ISDN was used in the event that primary link is DOWN.

Configurations.

Router A

interface BRI0/1

description Backup for Deonar, Mahim and Higi - 3801350

ip unnumbered Loopback0

encapsulation ppp

no ip route-cache

no ip mroute-cache

logging event subif-link-status

dialer idle-timeout 100

dialer map ip 182.192.2.50 name CONINHI1

dialer map ip 182.192.2.58 name CONINNR1

dialer map ip 10.198.124.50 name CONINMH1

dialer hold-queue 10

dialer-group 1

no fair-queue

ppp authentication chap

ppp multilink

hold-queue 75 in

Router CONINNR1

interface BRI0/0

no ip address

encapsulation ppp

dialer rotary-group 0

isdn switch-type basic-net3

priority-group 1

!

interface Dialer0

ip address 182.192.2.58 255.255.255.252

encapsulation ppp

no ip route-cache

no ip mroute-cache

delay 210000

dialer in-band

dialer idle-timeout 100

dialer string 3801350

dialer hold-queue 10

dialer-group 1

priority-group 1

ppp authentication chap

bridge-group 1

3 REPLIES
Community Member

Re: ISDN testing

Hi Oliver,

I guess that 3801350 is the number dialed to reach the other router? Bit confusing as you have the number in the description of the first router and also as a dialer string on CONINN. If so use,

isdn call interface BRI 0/1 (dialer string)

This will force B0/1 to dial the far end.

To disconnect the call:

isdn disconnect interface B0/1 all

Also, on Router CONINNR1, you need to have the "dialer pool-member (number)" command under BRI0/0 and the "dialer pool (number)" command under D0 if this interface is to place calls. This will associate the BRI port with the correct Dialer interface.

Hope this is of some use.

Ali

Community Member

Re: ISDN testing

Don't know what you have defined as interesting traffic but if it is something like "ip any any" you can just ping the distant end to generate interesting traffic. Of course, you have to logically shut the primary interface that is being backed up or pull the cable.

Community Member

Re: ISDN testing

dont forget to remove the backup interface command from your backedup interface, or it will not dial.

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