Example for Configuring Network Interworking by Using Synchronous Serial Interfaces

Procedure

1. Set physical attributes for synchronous serial interfaces.

   # Configure RouterA.

   <Huawei> system-view
   [Huawei] sysname RouterA
   [RouterA] interface serial 1/0/0
   [RouterA-Serial1/0/0] virtualbaudrate 72000

   # Configure RouterB.

   <Huawei> system-view
   [Huawei] sysname RouterB
   [RouterB] interface serial 1/0/0
   [RouterB-Serial1/0/0] baudrate 72000

2. Set link layer attributes for synchronous serial interfaces.

   # Configure RouterA.

   [RouterA-Serial1/0/0] link-protocol ppp
   [RouterA-Serial1/0/0] mtu 1400
   [RouterA-Serial1/0/0] shutdown
   [RouterA-Serial1/0/0] undo shutdown

   # Configure RouterB.

   [RouterB-Serial1/0/0] link-protocol ppp
   [RouterB-Serial1/0/0] mtu 1400
   [RouterB-Serial1/0/0] shutdown
   [RouterB-Serial1/0/0] undo shutdown

3. Configure IP addresses for synchronous serial interfaces.

   # Configure RouterA.

   [RouterA-Serial1/0/0] ip address 10.1.1.1 30
   [RouterA-Serial1/0/0] quit

   # Configure RouterB.

   [RouterB-Serial1/0/0] ip address 10.1.1.2 30
   [RouterB-Serial1/0/0] quit

4. Verify the configuration.

   # View the status of and traffic statistics on the synchronous serial interfaces. Use the command output of RouterA as an example. You can view that the physical status and the link layer protocol status of the serial interface are Up.

   [RouterA] display interface Serial 1/0/0
   Serial1/0/0 current state : UP
   Line protocol current state : UP
   Last line protocol up time : 2012-07-18 11:12:29
   Description:HUAWEI, AR Series, Serial1/0/0 Interface
   Route Port,The Maximum Transmit Unit is 1400, Hold timer is 10(sec)
   Internet Address is 10.1.1.1/30
   Link layer protocol is PPP
   LCP opened, IPCP opened  
   Last physical up time   : 2008-01-09 12:25:52
   Last physical down time : 2008-01-09 12:25:51
   Current system time: 2008-01-09 19:18:44
   Physical layer is synchronous, Virtualbaudrate is 72000 bps
   Interface is DTE, Cable type is V35, Clock mode is DTECLK1
   Last 300 seconds input rate 0 bytes/sec 0 bits/sec 0 packets/sec
   Last 300 seconds output rate 0 bytes/sec 0 bits/sec 0 packets/sec
   
   Input: 47266 packets, 662564 bytes                                              
     Broadcast:              0,  Multicast:              0                         
     Errors:                 0,  Runts:                  0                         
     Giants:                 0,  CRC:                    0                         
                                                                                   
     Alignments:             0,  Overruns:               0                         
     Dribbles:               0,  Aborts:                 0                         
     No Buffers:             0,  Frame Error:            0                         
                                                                                   
   Output: 47267 packets, 662592 bytes                                             
     Total Error:            0,  Overruns:               0                         
     Collisions:             0,  Deferred:        
   
   DCD=UP DTR=UP DSR=UP RTS=UP CTS=UP
       Input bandwidth utilization  : 0.09%
       Output bandwidth utilization : 0.09%

   # Check the routing table of the serial interface. Use the command output of RouterA as an example. You can view information about the routes destined for the peer end.

   [RouterA] display ip routing-table
   Route Flags: R - relay, D - download to fib, T - to vpn-instance
   ------------------------------------------------------------------------------
   Routing Tables: Public
            Destinations : 5        Routes : 5
   Destination/Mask    Proto  Pre  Cost     Flags NextHop         Interface
        10.1.1.0/30  Direct 0   0         D  10.1.1.1      Serial1/0/0
          10.1.1.1/32  Direct 0    0           D  127.16.0.1       Serial1/0/0
          10.1.1.2/32  Direct 0    0           D  10.1.1.2        Serial1/0/0
          10.1.1.3/32  Direct 0    0           D  127.16.0.1       Serial1/0/0
         127.16.0.0/8   Direct 0    0           D  127.16.0.1       InLoopBack0
         127.16.0.1/32  Direct 0    0           D  127.16.0.1       InLoopBack0

   # RouterA and RouterB can ping each other successfully. Use the command output of RouterA as an example. Ping RouterB from RouterA, and you can view the following command output:

   [RouterA] ping 10.1.1.2
     PING 10.1.1.2: 56  data bytes, press CTRL_C to break
       Reply from 10.1.1.2: bytes=56 Sequence=1 ttl=255 time=90 ms
       Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=50 ms
       Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=50 ms
       Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=40 ms
       Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=30 ms
    --- 10.1.1.2 ping statistics ---
       5 packet(s) transmitted
       5 packet(s) received
       0.00% packet loss
       round-trip min/avg/max = 30/52/90 ms