Cisco PA-2CT1 Installation And Configuration Manual page 32

VIP2 and the 2CT1 Port Adapter
Using the ping and loopback Commands
The packet internet groper (ping) and loopback commands allow you to verify that an interface port
is functioning properly and to check the path between a specific port and connected devices at
various locations on the network after the system has booted successfully and is operational. This
section provides brief descriptions of these commands. Refer to the publications listed in the
"Related Documentation" section on page 2, 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 command 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 timeout 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 that the connection failed.
Following is an example of a successful ping command to a remote server with the address
10.1.1.10:
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.
The loopback test allows you to detect and isolate equipment malfunctions by testing the connection
between the 2CT1 port adapter interface and a remote device such as a modem or a CSU. The
loopback command places an interface in loopback mode, which enables test packets that are
generated from the ping command to loop through a remote device or interface cable. If the packets
complete the loop, the connection is good. If not, you can isolate a fault to the remote device or
interface cable in the path of the loopback test.
Note
When no interface cable is attached to a 2CT1 port adapter interface, issuing the loopback controller
command tests the path between the VIP2 and the interface port only (without leaving the VIP2 and
port adapter).
For complete descriptions of interface commands and the configuration options available for
Cisco 7000 series and Cisco 7500 series-related interfaces, refer to the publications listed in the
section "Related Documentation" section on page 2.
32 Channelized T1 Port Adapter Installation and Configuration
Total Data (last 1 15 minute intervals):
10 Line Code Violations, 1 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins,
1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 1 Unavail Secs
[display text omitted]
Router# ping 10.1.1.10 <Return>
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echoes to 10.1.1.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms
Router#
The 2CT1 supports only the controller loopback test.