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Chapter 8
Troubleshooting ISDN
Bottom#show int bri0
BRI0 is up, line protocol is up (spoofing)
Hardware is BRI with U interface and POTS
Internet address is 10.1.1.2/24
MTU 1500 bytes, BW 64Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Last input 00:00:05, output 00:00:05, 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 0/1/256 (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
85 packets input, 791 bytes, 0 no buffer
Received 4 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored,
0 abort
92 packets output, 701 bytes, 0 underruns
0 output errors, 0 collisions, 4 interface resets
0 output buffer failures, 0 output buffers swapped
out
1 carrier transitions
show interface bri n 1 2
The show interface bri1 2 n command is used to display a single B
channel of the BRI interface. In this example, the circuit is down.
Although this command can be important when isolating an individual B
channel problem, the show interface bri n command usually suffices for
the majority of troubleshooting processes.
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