Cisco 7300-6T3 Especificaciones descargar pdf (Pagina 47)

4-11

OC12 Packet Over SONET Line Card Installation and Configuration

OL-3437-01

Chapter 4 Configuring the OC12 POS Line Card

Checking the Configuration

Hardware is Packet over Sonet

MTU 4470 bytes, BW 622000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

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

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

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 “Related

Documentation” section on page viii for detailed command descriptions and examples.

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

Router#

If the connection fails, verify that you have the correct IP address for the destination and that the device

is active (powered on), and repeat the ping command.

Using loopback Commands

The loopback test allows you to troubleshoot, detect, and isolate equipment malfunctions by testing the

connection between the OC-12 interface and a remote device. The loop subcommand places an interface

in internal loopback (also called local loopback) or line loopback mode, which enables test packets that

are generated from the ping command to loop through a remote device or a cable. If the packets complete

the loop, the connection is good. If not, you can isolate a fault to the remote device or the cable in the

path of the loopback test.

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