Using ISDN BRI leased lines to implement MP bundling
Network requirements
As shown in Figure 20, Router A is connected to Router B through two BRI leased lines, which are used for MP bundling.
Figure 20: Network diagram
Configuration procedure
Configure Router A:
<RouterA> system-view [RouterA] interface bri 2/0 [RouterA-Bri2/0] link-protocol ppp [RouterA-Bri2/0] ppp mp virtual-template 5 [RouterA-Bri2/0] dialer enable-circular [RouterA-Bri2/0] dialer isdn-leased 0 [RouterA-Bri2/0] dialer isdn-leased 1 [RouterA-Bri2/0] quit [RouterA] interface virtual-template 5 [RouterA-Virtual-Template5] ip address 202.38.154.1 255.255.0.0
Configure Router B:
<RouterB> system-view [RouterB] interface bri2/0 [RouterB-Bri2/0] link-protocol ppp [RouterB-Bri2/0] ppp mp virtual-template 5 [RouterB-Bri2/0] dialer enable-circular [RouterB-Bri2/0] dialer isdn-leased 0 [RouterB-Bri2/0] dialer isdn-leased 1 [RouterB-Bri2/0] quit [RouterB] interface virtual-template 5 [RouterB-Virtual-Template5] ip address 202.38.154.2 255.255.0.0
Only virtual-templates can be used as the MP binding templates for ISDN leased lines.
As leased lines do not require dialing, you do not need to configure dial numbers.
The system accepts MP bundles formed by 64-kbps, 128-kbps ISDN leased lines or a mix of both. For more information, see the three ways to configure MP bundles discussed in "Configuring PPP and MP."