Cisco Cisco IOS Software Release 12.0(19)S

To display information about the current automatic protection switching (APS) configuration, use the 
EXEC command show aps.

Router#show aps 

SONET3/1 APS Group 33:protect channel 0 (inactive) 

        bidirectional, revertive (2 min) 

        SONET framing; SONET APS signalling by default 

        Received K1K2:0x00 0x05 

                No Request (Null) 

        Transmitted K1K2:0x00 0x05 

                No Request (Null) 

        Working channel 1 at 11.11.11.11 (Enabled) 

        Remote APS configuration:(null) 

SONET3/0 APS Group 33:working channel 1 (active) 

        SONET framing; SONET APS signalling by default 

        Protect at 11.11.11.11 

        Remote APS configuration:(null) 

This section provides configuration examples for both concatenated and channelized line cards.

This section contains examples to modify the various interface parameters of a concatenated line card. 
By default, the line card is disables. If the line card is simple enabled with no additional configuration, 
the default parameters will apply. Refer to 

 for detailed 

instructions on the use of these commands and their default settings. 

This section contains examples for the following:

This example configures the interface at slot 2, port 1 for SONET framing and Frame Relay 
encapsulation. This example also shows how to start up the interface and save the configuration.

For the parameters not entered, the default values apply. See 

 for more information.

Router# configure terminal

Router(config)# interface POS 2/1

Router(config-if)# POS framing SONET

Router(config-if)# encapsulation frame-relay

Router(config-if)# no shutdown

Router(config-if)# end

Router# copy running-config startup-config