Router# configure terminal
Router(config)# controller e1 1/1/0
Router(config-controll)# channel-group 20 timeslot 1-5, 20-23
Router(config-controll)# channel-group 21 timeslot 6-19
Router(config-controll)# interface serial 1/1/0:20
Router(config-if)# ip address 10.20.30.1 255.255.255.0
Router(config-if)# interface serial 1/1/0:21
Router(config-if)# ip address 10.20.40.1 255.255.255.0
Router# show interface serial 3/0:30
Serial3/0:30 is up, line protocol is up (looped)
Hardware is Multichannel E1
MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, CRC 16, Data non-inverted, keepalive set (10 sec)
Last input 00:00:08, output 00:00:08, output hang never
Last clearing of “show interface” counters 00:00:27
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/64/0 (size/threshold/drops)
Conversations 0/1 (active/max active)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2 packets input, 48 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
2 packets output, 48 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffers copied, 0 interrupts, 0 failures
0 carrier transitions
no alarm present
Timeslot(s) Used:31, subrate: 64Kb/s, transmit delay is 0 flags
这是打环测试