Connecting routers through ISDN PRI lines

As shown in Figure 18, Router A is connected to Router B through ISDN PRI lines.

1. Configure Router A:

   # Create an ISDN PRI interface.

   <RouterA> system-view
   [RouterA] controller e1 1/0
   [RouterA-E1 1/0] pri-set
   [RouterA-E1 1/0] quit
   

   # Configure an ISDN PRI interface.

   [RouterA] interface serial 1/0:15
   [RouterA-Serial1/0:15] ip address 202.38.154.1 255.255.0.0
   [RouterA-Serial1/0:15] isdn protocol-type dss1
   [RouterA-Serial1/0:15] dialer enable-circular
   [RouterA-Serial1/0:15] dialer route ip 202.38.154.2 8810154
   [RouterA-Serial1/0:15] dialer-group 1
   [RouterA-Serial1/0:15] quit
   [RouterA] dialer-rule 1 ip permit
   

2. Configure Router B:

   Follow the same procedures to configure Router B.