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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Chapter 7 Configuring Encryption Services
Verifying the Configuration
Configure Encryption on the T1 Channel Group Serial Interface
The fourth step is to configure a T1 serial interface with an IP address and a crypto map.
To configure encryption on the T1 channel group, follow this procedure:
For more information about configuration commands and about configuring LAN and WAN interfaces
on your switch, refer to the Cisco IOS configuration guides and command references.
Verifying the Configuration
After configuring the new interface, use the following commands to verify that it is operating correctly:
• Use show version to display the router hardware configuration. Verify that the list includes the new
interface.
• Use show controllers to display all network modules and their interfaces.
• Use show interfaces type slot/port to display the details of a specified interface. Verify that the first
line of the display shows the correct slot and port number and that the interface and line protocol
are in the correct state (up or down).
• Use show protocols to display the protocols configured for the entire router and for individual
interfaces. If necessary, add or remove protocol routing on the router or its interfaces.
• Use show running-config to display the running configuration.
• Use show startup-config to display the configuration stored in NVRAM.
• Use ping to send an echo request to a specified IP address.
Command Purpose
Step 1
gateway (config)# interface serial
slot|port:timeslot
Selects the serial interface and enter interface
configuration mode.
Step 2
gateway (config-if)# ip address
address mask
Specifies an IP address followed by the subnet mask for
this interface.
Step 3
gateway (config-if)# crypto map
map_name
Assigns a crypto map to this interface.
Step 4
gateway(config-if)# exit
Returns to global configuration mode.
Step 5
gateway(config)# exit
Returns to the enable mode.
Step 6
gateway# show running-config
Displays the current operating configuration, including
any changes just made.
Step 7
gateway# show startup-config
Displays the configuration currently stored in nonvolatile
random-access memory (NVRAM).
Step 8
gateway# copy running-config
startup-config
At the enable prompt, write your changes to NVRAM.
Note The results of the show running-config and
show startup-config commands differ if you
have made changes to the configuration but
have not yet written them to NVRAM.
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