Yellow - Cisco ASR 9000 Series Command Reference Manual

T3, E3, T1, E1 Controller Commands on the Cisco ASR 9000 Series Router

yellow

To enable detection and generation of T1 yellow alarms, use the yellow command in T1 configuration mode.
To disable detection and generation of T1 yellow alarms, use the no form of this command.
yellow {detection| generation} {disable| enable}
no yellow {detection| generation} {disable| enable}
Syntax Description
detection
generation
disable
enable
Command Default
Yellow alarms are detected and generated on the T1 channel.
Command Modes
T1 configuration
Command History
Release
Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
If the T1 framing type is super frame (SF), you should consider disabling yellow alarm detection as the yellow
alarm can be incorrectly detected with SF framing.
Serial interface may flap and eventually, go down if yellow alarm detection is not disabled on its T1 controller
configured with SF framing.
The default state of the yellow command is enabled. If you disable yellow alarm detection and want to reenable
it, you can use the no form of the command. Alternatively, you can use the enable keyword.
The yellow command is only applicable to T1 lines.
Task ID
Task ID
sonet-sdh
Detects yellow alarms.
Generates yellow alarms.
Disables detection or generation of T1 yellow alarms.
Enables detection or generation of T1 yellow alarms. The default is enable.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Modification
This command was introduced.
Operations
read, write
yellow
Release 5.3.x
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