Backup FEP configuration example (transparent mode)

In transparent mode, a pair of primary and backup FEPs can provide service for only one POS terminal.

As shown in Figure 27, Server A (primary FEP) and Server B (backup FEP) provide service for the FCM POS terminal. If Server A is unreachable, Server B is used. Server C (primary FEP) and Server D (backup FEP) provide service for the AM POS terminal. If Server C is unreachable, Server D is used.

The FEPs have POS access enabled and use the listening port 2000.

1. Enable the POS access server:

   <RouterA> system-view
   [RouterA] posa server enable
   

2. Configure POS application 1:

   # Create TCP-based POS application 1 and enter its view.

   [RouterA] posa app 1 type tcp
   

   # Specify the primary FEP Server A with IP address 2.2.2.1 and port number 2000 for POS application 1.

   [RouterA-posa-app1] ip 2.2.2.1 port 2000
   

   # Specify the backup POS application 2 to use Server B as the backup FEP.

   [RouterA-posa-app1] backup app 2
   

   # Set the quiet timer for POS application 1 to 10 minutes.

   [RouterA-posa-app1] timer quiet 10
   [RouterA-posa-app1] quit
   

3. Configure POS application 2:

   # Create TCP-based POS application 2 and enter its view.

   [RouterA] posa app 2 type tcp
   

   # Specify the FEP Server B with IP address 2.2.2.2 and port number 2000 for POS application 2.

   [RouterA-posa-app2] ip 2.2.2.2 port 2000
   [RouterA-posa-app2] quit
   

4. Configure POS application 3:

   # Create TCP-based POS application 3 and enter its view.

   [RouterA] posa app 3 type tcp
   

   # Specify the primary FEP Server C with IP address 2.2.2.3 and port number 2000 for POS application 3.

   [RouterA-posa-app3] ip 2.2.2.3 port 2000
   

   # Specify the backup POS application 4 to use Server D as the backup FEP.

   [RouterA-posa-app3] backup app 4
   

   # Set the quiet timer for POS application 3 to 10 minutes.

   [RouterA-posa-app3] timer quiet 10
   [RouterA-posa-app3] quit
   

5. Configure POS application 4:

   # Create TCP-based POS application 4 and enter its view.

   [RouterA] posa app 4 type tcp
   

   # Specify the FEP Server D with IP address 2.2.2.4 and port number 2000 for POS application 4.

   [RouterA-posa-app4] ip 2.2.2.4 port 2000
   [RouterA-posa-app4] quit
   

6. Configure the AM POS terminal:

   # Configure interface AM 5/0 as the access interface of terminal 11 and specify terminal 11 to use POS application 1 (transparent mode).

   [RouterA] interface analogmodem 5/0
   [RouterA-Analogmodem5/0] posa bind terminal 11 app 1
   [RouterA-Analogmodem5/0] quit
   

7. Configure the FCM POS terminal:

   # Configure interface FCM 1/0 as the access interface of terminal 12 and specify terminal 12 to use POS application 3 (transparent mode).

   [RouterA] interface fcm 1/0
   [RouterA-Fcm1/0] posa bind terminal 12 app 3
   [RouterA-Fcm1/0] quit