Configuration procedure

Configure Router A:

# Configure interface Serial 2/0 to operate in asynchronous and protocol mode.

<RouterA> system-view
[RouterA] interface serial 2/0
[RouterA-Serial2/0] physical-mode async
[RouterA-Serial2/0] async mode protocol

# Enable SLIP encapsulation on interface Serial 2/0.

[RouterA-Serial2/0] link-protocol slip

# Assign an IP address to interface Serial 2/0.

[RouterA-Serial2/0] ip address 200.1.1.1 16

Configure Router B:

# Configure interface Serial 2/0 to operate in asynchronous and protocol mode.

<RouterB> system-view
[RouterB] interface serial 2/0
[RouterB-Serial2/0] physical-mode async
[RouterB-Serial2/0] async mode protocol

# Enable SLIP encapsulation on interface Serial 2/0.

[RouterB-Serial2/0] link-protocol slip

# Assign an IP address to interface Serial 2/0.

[RouterB-Serial2/0] ip address 200.1.1.2 16

Verify the configuration:

Use the display interface command to view the information about interface Serial 2/0. The physical layer status and link layer status of Serial 2/0 are both up, and Router A and Router B can successfully ping each other.

[RouterB-Serial2/0] display interface serial 2/0
Serial2/0 current state: UP
Line protocol current state: UP
Description: Serial2/0 Interface
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Internet Address is 200.1.1.2/16 Primary
Link layer protocol is SLIP
Output queue : (Urgent queuing : Size/Length/Discards)  0/100/0
Output queue : (Protocol queuing : Size/Length/Discards)  0/500/0
Output queue : (FIFO queuing : Size/Length/Discards)  0/75/0
Physical layer is asynchronous, Baudrate is 9600 bps
Last clearing of counters: Never
    Last 300 seconds input rate 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
    Last 300 seconds output rate 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
    Input: 11753 packets, 147028 bytes
           0 broadcasts, 0 multicasts
           16 errors, 0 runts, 3 giants
           1 CRC, 0 align errors, 0 overruns
           0 dribbles, 0 aborts, 0 no buffers
           12 frame errors
    Output:11741 packets, 142014 bytes
           0 errors, 0 underruns, 0 collisions
           0 deferred
    DCD=DOWN  DTR=UP  DSR=UP  RTS=UP  CTS=UP

[RouterB-Serial2/0] ping 200.1.1.1
  PING 200.1.1.1: 56  data bytes, press CTRL_C to break
    Reply from 200.1.1.1: bytes=56 Sequence=1 ttl=255 time=103 ms
    Reply from 200.1.1.1: bytes=56 Sequence=2 ttl=255 time=1 ms
    Reply from 200.1.1.1: bytes=56 Sequence=3 ttl=255 time=1 ms
    Reply from 200.1.1.1: bytes=56 Sequence=4 ttl=255 time=1 ms
    Reply from 200.1.1.1: bytes=56 Sequence=5 ttl=255 time=10 ms

  --- 200.1.1.1 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 1/23/103 ms