Basic ISDN question

The senario is, connecting two routers via bri0/0. Is it necessary to provide a switch-type? If it's not, SPIDS are obviously not necessary. But say for instance, you connecting through a telco, using basic-ni, are the SPIDS for basic-ni used with the dialer map command?

Connecting 2 routers:

isdn switch-type basic-ni
ip route 192.168.12.0 255.255.255.0 10.0.0.1
dialer-list 1 protocol ip permit
!
ip address 192.168.10.2 255.255.255.0
isdn switch-type basic-ni
encapsulation ppp
ppp authentication chap
dialer idle-timeout 300
username R password p
isdn spid1 xxxyyyzzz 5552121
dialer map ip 10.0.0.1 name R 5552121
dialer-group 1
!

Is this config correct in a point to point (directly connected setup) or via a telco?

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Comments

keenon

cisco_trouble wrote:

The senario is, connecting two routers via bri0/0. Is it necessary to provide a switch-type? If it's not, SPIDS are obviously not necessary. But say for instance, you connecting through a telco, using basic-ni, are the SPIDS for basic-ni used with the dialer map command?

Connecting 2 routers:

isdn switch-type basic-ni
ip route 192.168.12.0 255.255.255.0 10.0.0.1
dialer-list 1 protocol ip permit
!
ip address 192.168.10.2 255.255.255.0
isdn switch-type basic-ni
encapsulation ppp
ppp authentication chap
dialer idle-timeout 300
username R password p
isdn spid1 xxxyyyzzz 5552121
dialer map ip 10.0.0.1 name R 5552121
dialer-group 1
!

Is this config correct in a point to point (directly connected setup) or via a telco?

is this for the first and second router? if this is only for 1 i can tell you that
the ip address is wrong
http://www.cisco.com/warp/public/793/access_dial/ddr_dialer_profile.html

cisco_trouble

ignore the ip address scheme. I couldve replaced them with "next-hop" etc...

Just wanted to know for basic-ni switch type, you need spids right?
If its router to router backtoback, is it necessary to configure spids and dialer maps?

mikej412

cisco_trouble wrote:

Just wanted to know for basic-ni switch type, you need spids right?
If its router to router backtoback, is it necessary to configure spids and dialer maps?

Two SPIDs are required, assigned by service provider; format will vary

What do you mean backtoback? You either have ISDN and are connecting to an ISDN switch or you have an ISDN Simulator pretending to be an ISDN switch. If you have a Simulator, it may not make you put in the SPIDs.

Yankee

The need or not for SPIDs in a config is based on switch-type. Generally in Europe they are not required (auto-detected) and in the US are almost always required to be configured.

Yankee

cisco_trouble

i came across a question where its a debug output of isdn showing the "spid not sent", "incorrect spid"...or something to that effect. using basic-ni switch type...now if the spids are correctly configured and its the correct switch-type...why would you have such an output? enlighten me people...ohyes, passed the bcran last week...

Yankee

The SPID is really nothing but a phone number, but it often requires an extension like "0000" or "0100" at the end to be properly configured. The carrier doesn't always tell you this, so that may result in your error.

In any case what you are seeing is your SPID configuration not matching what the carrier's ISDN switch is expecting from you.

Yankee