Directly connecting routers through POS interfaces

As shown in Figure 2, connect the routers through POS interfaces.

1. Configure POS 2/1/1 on Router A:

   # Assign an IP address to the interface.

   <RouterA> system-view
   [RouterA] interface pos 2/1/1
   [RouterA-Pos2/1/1] ip address 10.110.1.10 255.255.255.0
   

   # Configure the data link layer protocol of the interface.

   [RouterA-Pos2/1/1] link-protocol ppp
   

   # Set the MTU to 1500 bytes for the interface.

   [RouterA-Pos2/1/1] mtu 1500
   

   # Shut down, and then bring up the interface for the settings to take effect.

   [RouterA-Pos2/1/1] shutdown
   [RouterA-Pos2/1/1] undo shutdown
   

2. Configure POS 2/1/1 on Router B:

   # Set the clock mode to master on the interface.

   <RouterB> system-view
   [RouterB] interface pos 2/1/1
   [RouterB-Pos2/1/1] clock master
   

   # Assign an IP address to the interface.

   [RouterB-Pos2/1/1] ip address 10.110.1.11 255.255.255.0
   

   # Configure the data link layer protocol of the interface.

   [RouterB-Pos2/1/1] link-protocol ppp
   

   # Set the MTU to 1500 bytes for the interface.

   [RouterB-Pos2/1/1] mtu 1500
   

   # Shut down, and then bring up the interface for the settings to take effect.

   [RouterB-Pos2/1/1] shutdown
   [RouterB-Pos2/1/1] undo shutdown
   

# Verify the POS interface settings, for example, on Router A.

<RouterA> display interface pos

# Verify that Router A and Router B can ping each other at the POS interfaces. (Details not shown.)