Thanks hope this helps.....link is between router 1 and router 3
Router1#sh int serial 1
Serial1 is up, line protocol is down
Hardware is HD64570
Description: Link to Router 3
Internet address is 10.1.2.2/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output 00:00:07, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
89 packets output, 2819 bytes, 0 underruns
0 output errors, 0 collisions, 31 interface resets
0 output buffer failures, 0 output buffers swapped out
106 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Router1#
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router3#
router3#sh int serial 1
Serial1 is up, line protocol is up
Hardware is HD64570
Description: serial link to router 1
Internet address is 10.1.2.3/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input 00:00:03, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/3/256 (active/max active/max total)
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
123 packets input, 3567 bytes, 0 no buffer
Received 123 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
293 packets output, 42809 bytes, 0 underruns
0 output errors, 0 collisions, 77 interface resets
0 output buffer failures, 0 output buffers swapped out
88 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
router3#