Channelized T1 Port Adapter Installation and Configuration 51
Configuring 2CT1 Interfaces
To determine which type of port adapter is installed in your system, use the show diag slot
command. Specific port adapter information is displayed, as shown in the following example of a
2CT1 port adapter in chassis slot 1:
Router# show diag 1
Slot 1:
Channelized T1 port adapter, 2 ports
Port adapter is analyzed
Port adapter insertion time 02:18:20 ago
Hardware revision 255.255 Board revision UNKNOWN
Serial number 4294967295 Part number 255-65535-255
Test history 0xFF RMA number 255-255-255
EEPROM format version 255
EEPROM contents (hex):
0x20: FF 07 FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
For command descriptions and examples for Cisco 7200 series routers, refer to the publications
listed in the “Related Documentation” section on page 2.
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:
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#
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 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
The 2CT1 supports only the controller loopback test.
