Cisco 10000 Series Configuration Manual page 214

Creating a T3, VT, or AUG Controller
Controlling Yellow Alarms
Use the t1 yellow command to turn the detection or generation of a yellow alarm on or off.
t1 t1-number yellow
[ ]
no
Where:
•
•
•
When you select SF framing for a full T1 interface (24 timeslots) that uses the default speed of 64,
consider using the no t1-number yellow detection command to turn off yellow alarm detection, because
the yellow alarm can be incorrectly detected with SF framing.
In the following example, T1 interface 1 is set to yellow detection:
Router(config)# controller t3 2/0/0.1
Router(config-controller)# t1 1 yellow detection
Setting the T1 Clock Source
You can set the internal or line (network) clock source for a T1 interface using the controller command.
t1 t1-number clock source {internal | line}
Where:
•
•
•
The default is clock source internal.
In the following example, the interface is instructed to get its clock source from the line:
Router(config)# controller T3 1/0/0.1
Router(config-controller)# t1 1 clock source line
Configuring FDL
You can use the fdl ansi command to enable 1-second transmissions of ANSI T1.403 performance
reports through the facility data link (FDL), on both ends of the T1 connection.
t1 t1-number fdl ansi
[ ]
no
Where t1-number is T1 interface 1 to 28.
Use the no form of the command to disable this feature.
You can use this command only when the T1 framing is ESF.
Note
Cisco 10000 Series Router Line Card Configuaration Guide
7-30
{
detection
{
t1 t1-number yellow detection
t1-number is T1 interface 1 to 28
detection means that the interface is told that it is failing by the remote device, causing Cisco IOS
software to send a message to the console
generation means that the interface notifies the remote device if it is failing, causing Cisco IOS
software to send a message to the console
t1-number is T1 interface 1 to 28
internal specifies that the internal clock source is used
line specifies that the network clock source is used
t1 t1-number fdl ansi
Chapter 7 4-Port Channelized OC-3/STM-1 Line Card Configuration
| }
generation
| }
generation
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