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Checking the Configuration
PA-T3 Serial Port Adapter Installation and Configuration
8-14
For a Cisco 7100 series, Cisco 7200 series, or Cisco uBR7200 series router, use the following
example:
router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#
router(config)# interface serial 3/0
router(config-int)# crc 32
Ctrl-z
For a VIP2, use the following example:
router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#
router(config)# interface serial 1/0/0
router(config-if)# crc 32
Ctrl-z
For a Catalyst RSM/VIP2, use the following example:
router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#
router(config)# interface serial 0/0
router(config-if)# crc 32
Ctrl-z
To disable CRC-32 and return to the default CRC-16 setting, specify the slot and port address (and
the interface port number for a VIP2) and use the no crc 32 command. For complete command
descriptions and instructions, refer to the related software documentation.
Note When enabling a 32-bit CRC on an interface, ensure that the remote device is also configured
for a 32-bit CRC. Both the sender and the receiver must use the same CRC setting.
To check the interface configuration using show commands, proceed to the following section,
“Checking the Configuration.”
Checking the Configuration
After configuring the new interface, use the show commands to display the status of the new
interface or all interfaces, the ping command to check connectivity, and the loopback command to
troubleshoot the physical interface.
Using show Commands to Verify Status
Use the show commands to verify that the new interfaces are configured and operating correctly:
Step 1 Use the show version command to display the system hardware configuration. Ensure
that the list includes the new interfaces.
Step 2 Display all the current port adapters and their interfaces with the show controllers
command. Verify that the new PA-T3 serial port adapter appears in the correct slot.