Specifications

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Cisco 7100 Series VPN Router Installation and Configuration Guide
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Chapter 4 Performing a Basic Startup Configuration
Configuring a Router
At any time, you can exit the privileged level and return to the user level by entering disable at the
prompt as follows:
Router# disable
Step 1 At the Router (config)# prompt, enter the interface type slot/port command to enter the interface
configuration mode. In this example, the serial port 0 is configured:
Router(config)# interface serial 1/0
Router(config-if)#
You can now enter any changes to the configuration.
Note To see a list of the configuration commands available to you, enter ? at the prompt or press the Help key
while in configuration mode.
Step 2 Specify the IP address. The following example uses an IP address of 10.1.1.40:
Router(config-if)# ip address 10.1.1.40 255.0.0.0
Step 3 Change the default settings or configure other features on the interface as needed.
The following example shows you how to set the clock source to internal (the default is line) and reduce
the effective bandwidth (the default is 34010 kbps):
Router(config-if)# clock source internal
Router(config-if)# dsu bandwidth 16000
Note The local port configuration must match the remote port configuration. For example, if you reduce the
effective bandwidth to 16000 on the local port, you must do the same on the remote port.
(See Table 4-4 for a list of commands used to change the default settings. See Table C-17 on page C-18
for information regarding DSU feature compatibilities.)
Note For more information on configuring interfaces, refer to the Cisco IOS Interface Configuration
Guide and the Cisco IOS Interface Command Reference publications. See “Related Documentation”
section on page xi for more information.
Step 4 Enable the interface.
Router(config-if)# no shutdown
Step 5 Press Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration mode
and return to the EXEC command interpreter.
Step 6 Save the new configuration to NVRAM as follows:
Router# copy running-config startup-config
[OK]
(See the “Saving the Running Configuration to NVRAM” section on page 4-17. Also see the “Checking
the Interface Configurations” section on page 4-18 for examples of interface configurations.)