22 Channelized T1 Port Adapter Installation and Configuration
VIP2 and the 2CT1 Port Adapter
Step 8
To reenable the interfaces, repeat the above steps, but use the no shutdown command in
Step 4; then write the new configuration to memory as follows:
Router(config)# interface serial 3/1/0:0
Router(config-if)# no shutdown
Ctrl-Z
Router#
Router# copy running-config startup-config
[OK]
Router# show interface serial 3/1/0:0
Serial3/1/0:0 is up, line protocol is up
Hardware is cxBus T1
[display text omitted]
For complete descriptions of software configuration commands, refer to the publications listed in the
“Related Documentation” section on page 2.
Configuring Channelized T1 Interfaces
Following are instructions for a basic channelized T1 configuration: enabling a controller and
specifying IP routing. You might also need to enter other configuration commands depending on the
requirements for your system configuration and the protocols you plan to route on the interface. For
complete descriptions of configuration commands and the configuration options available, refer to
the publications listed in the “Related Documentation” section on page 2.
The channel groups must be mapped before the 2CT1 controller can be configured. The following
are controller commands used to map the channel group (the default variable is listed first):
•
controller t1 chassis slot number/port adapter number/interface port number
•
clock source [line | internal]
•
linecode [ami | hdb3]
•
framing [sf | esf]
•
loopback [local | remote]
•
shutdown
•
channel-group number timeslots list [speed {56 | 48 | 64}]
number is the channel group 0 to 23.
timeslots is a number between 1 to 24. You can enter timeslots individually and separate them
by commas or enter them as a range separated by a hyphen (for example, 1-3, 8, 9-18). Timeslot 0
is an illegal configuration.
speed specifies the DS0 speed of the channel group; 56 kbps is the default.
Note
Cisco 7000 series and Cisco 7500 series routers identify channel groups as serial interfaces
by chassis slot number, port adapter (0 or 1), interface port number (0 or 1), and channel-group
number (0 to 23). For example, the address of the 2CT1 installed in chassis slot 4, port adapter slot
1, interface port 1, and channel group 5, would be serial 4/1/1:5.
