Configuring ISDN dialup links between routers

This config asumes that we will be using CLI to identify the incomming call. PPP as the transport protocol. PAP as the authentication protocol, and that calls may be in either direction.

Chris's RULE allways use CLI

Collect data to set up link, See Davids PPP Faq for an example form.

Decide on names for isdn call and a number for the ppp interface.

Configure ISDN call information

Add isdn call={remote router name} number={remotes routers phone number} prec=out searchcli=on

Note One end usualy the main or central site is configured as prec=out with the outher site as prec=in.

Configute PPP control information

Note 100 PPP control sets can be configured. 0<=nn<=99

create ppp=nn idle=55 over=isdn-{remote router name}

set ppp=nn iprequest=off username={local router name} password={PAP password to send}

set ppp=nn over=isdn-{remote router name} authorization=pap authmode=in

Add routing table entery

We need to add routing enteries for the remote network we can see accross this l ink. Note If we are not calling out to an ISP, and all acces is to be acc ross this connection you could use a default route see config for ISP.

add ip route={remote network address} mask={remote network mask} int=ppp{nn} next={ppp interface address of remote}

Repeat for all routes via this connection.

Add User entery for remote router

If we are using an external RADIUS server to authenticate connections, configure the user info on the RADIUS server.

If we are doing are own authentication

add user={PAP user name sent by remote router} password={PAP password sent by remote router} desc="PAP connection authentication from remote router"