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18 Channelized T1 Port Adapter Installation and Configuration
VIP2 and the 2CT1 Port Adapter
Using the EXEC Command Interpreter
You modify the configuration of your router through the software command interpreter called the
EXEC. You must enter the privileged level of the EXEC command interpreter with the enable
command before you can use the configure command to configure a new interface or to change the
existing configuration of an interface. The system prompts you for a password if one has been set.
The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket
(>). At the console terminal, use the following procedure to enter the privileged level:
Step 1
At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for
privileged-level passwords:
Router> enable
Password:
Step 2
Enter the password (the password is case sensitive). For security purposes, the password
is not displayed.
When you enter the correct password, the system displays the privileged-level system
prompt (#):
Router#
Proceed to the following section to configure the new interfaces.
Configuring 2CT1 Interfaces
If you installed a new 2CT1-equipped VIP2 or if you want to change the configuration of an existing
interface, you must use the privileged-level configure command. If you replaced a 2CT1 port
adapter that was previously configured, the system will recognize the new 2CT1 port adapter
interfaces and bring each of them up in their existing configuration.
After you verify that the new 2CT1 port adapter is installed correctly (the enabled LED goes on),
use the configure command to configure the new interfaces. Be prepared with the information you
will need, such as the following:
•
ISDN switch type, when configuring ISDN PRI (Table 5 lists ISDN service provider
switch types)
•
T1 information, for example, clock source, line code, framing type, and so on
•
Channel group and PRI group information and timeslot mapping
•
Protocols and encapsulations you plan to use on the new interfaces
•
Protocol specific information, such as IP addresses, if you plan to configure the interfaces for IP
routing
•
Whether the new interface will use bridging
Note
Configuration commands are executed from the privileged level of the EXEC command
interpreter, which usually requires password access. See the previous section “Using the EXEC
Command Interpreter” and contact your system administrator, if necessary, to obtain access.