5-5
PA-MC-2T3+ Multi-Channel T3 Port Adapter Installation and Configuration
OL-3526-05
Chapter 5 Configuring Channelized mode for the Cisco PA-MC-2T3+
Configuring a Channelized T3 Link
To configure the T3 for channelized mode,
use the channelized command.
The following example is
for a PA-MC-2T3+ in port adapter slot 1 of a Cisco 7200 series router.
Router#
configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
controller T3 1/0
Router (config)#
channelized
The following example is for a PA-MC-2T3+ in port adapter slot 1 of a VIP in a Cisco 7500 series router.
Router#
configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
controller T3 1/1/0
Router (config)#
channelized
Change to channelized mode will cause cbus complex reset. Proceed? [yes/no]:
When the PA-MC-2T3+ is configured for channelized T3 mode, its default MTU size is set to 1500 for
compatibility with other T3 equipment and port adapters.
When the T3 controller is configured to be channelized, 28 T1 lines are created. To configure the T1
lines, refer to the
“Configuring T1 Lines” section on page 5-10
.
Caution
The change in MTU sizes will cause a memory recarve and cbus complex to occur, disrupting all traffic
on the router for several minutes. (This occurs only on Cisco 7500 series routers.)
The following message will be displayed when switching from unchannelized to channelized mode on
Cisco 7500 series routers:
Change to channelized mode will cause cbus complex reset. Proceed? [yes/no]:
Type Y for ‘yes’ at the end of the warning. At the prompt, type ^Z to exit. This will allow you to exit
configuration mode and enter channelized mode.
Setting the Framing Type for the T3 Controller
At the prompt, specify the framing type using the controller command:
framing
[
c-bit
|
m23
|
auto-detect
]
You can set c-bit framing format as follows:
Router(config-controller)#
framing c-bit
You can set m23 framing format as follows:
Router(config-controller)#
framing m23
You can request the PA-MC-2T3+ to detect the framing type it is receiving from the far end and transmit
that same framing type as follows:
Router(config-controller)#
framing auto-detect
