ISDN config 1700 router 1

[Speaker]

I have to configure a new 1700 router for a remote site and ship it to them. They have an ISDN line (the last time I configured ISDN was in a lab two years ago). It is an always-on ISDN line with the local ISP.

I followed the 1700 configuration guide, but I can't remember which lines are optional.

Do I need to configure PPP multilink?
Do I need to configure a dialer map?
Do I need to configure a dialer group?

CONFIG

ip subnet-zero
no ip domain-lookup
isdn switch-type basic-ni1
!
interface BRI0
ip address 1.2.100.1 255.255.255.252
no ip directed-broadcast
encapsulation ppp
isdn spid1 1234567890101
isdn spid2 1234569870101
no fair-queue
ppp authentication chap pap
!
router rip
version 2
redistribute connected
network 1.0.0.0
no auto-summary

 

[chenchuk77]

ppp multilink is optional (make a bundle of 2 bri channels as 1 link - use it if u want to use 2 calls of 128K instead of using 64K )

u should use command "dialer-list 1 protocol ip permit" which cause the router to "open" the line for any ip traffic. because u have RIP configured it will hold the line "open forever" .
after this u should enter "dialer-group 1" on the bri interface which tell the router to use dialer-list 1 on this interface "

if i remember correct - dialer-map use when dialing in the "old way" ( using rotary-group ) so u dont need to use it.

consider - dialer idle-timeout 10000 to make the line open always.

and of course - "dialer-string xxx" (xxx=phone number)


BTW - using logical "interface dialer 0" is better than make the configuration on the physical BRI interface, but in your case its doesnt matter ....

i hope i help u .... bye