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Chapter 4
Configuring the OC12 POS Line Card
Using the show interfaces Command
The show interfaces command displays status information (including the physical slot and interface
address) for the interfaces you specify. All of the examples that follow specify POS interfaces.
Note
The outputs that appear in this document may not match the output you receive when running these
commands. The outputs in this document are examples only.
Cisco 7304 Router
Following is an example of the show interfaces command for an OC12 POS line card in slot 3 of a Cisco
7304 router:
Router# show interfaces pos 3/0
POS3/0 is up, line protocol is up
Hardware is Packet over Sonet
MTU 4470 bytes, BW 622000 Kbit, DLY 100 usec,
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Scramble disabled
Last input 00:00:07, output 00:00:07, output hang never
Last clearing of "show interface" counters never
Input queue:0/75/0/0 (size/max/drops/flushes); Total output drops:0
Queueing strategy:fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
Using the ping Command to Verify Network Connectivity
Using the ping command, you can verify that an interface port is functioning properly. This section
provides a brief description of this command. Refer to the publications listed in the
Documentation" section on page 8
The ping command sends echo request packets out to a remote device at an IP address that you specify.
After sending an echo request, the system waits a specified time for the remote device to reply. Each
echo reply is displayed as an exclamation point (!) on the console terminal; each request that is not
returned before the specified time-out is displayed as a period (.). A series of exclamation points (!!!!!)
indicates a good connection; a series of periods (.....) or the messages [timed out] or [failed] indicate a
bad connection.
Following is an example of a successful ping command to a remote server with the address 10.0.0.10:
Router# ping 10.0.0.10 <Return>
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echoes to 10.0.0.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms
OL-3437-01
reliability 255/255, txload 1/255, rxload 1/255
1 packets input, 24 bytes
Received 1 broadcasts, 0 runts, 0 giants, 0 throttles
0 parity
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1 packets output, 24 bytes, 0 underruns
0 output errors, 0 applique, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
for detailed command descriptions and examples.
OC12 Packet Over SONET Line Card Installation and Configuration
Checking the Configuration
"Related
4-11
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