Y Commands

The commands shown in this chapter apply to the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. Where an entire command or certain attributes of a command have values specific to a particular switch or switch router, an exception is indicated by the following callouts:

Catalyst 8540 MSR
Catalyst 8510 MSR and LightStream 1010

Note Commands that are identical to those documented in the Cisco IOS software documentation have been removed from this chapter.

Note Commands that no longer function as expected in ATM environments have also been removed from this chapter.

Refer to Appendix D of this command reference for a detailed list of commands that have been removed, changed or replaced.

yellow (Catalyst 8510 MSR and LightStream 1010)

To enable the functionality of generation and detection of the yellow alarm in the system, use the yellow interface configuration command. To disable the functionality, use the no form of this command.

yellow {generation | detection}

no yellow {generation | detection}

Syntax Description

generation

If set, yellow alarm is generated in the event of frame loss.

detection

If set, yellow alarm is detected in the event of the remote end experiencing frame loss and transmitting yellow.

generation	If set, yellow alarm is generated in the event of frame loss.
detection	If set, yellow alarm is detected in the event of the remote end experiencing frame loss and transmitting yellow.

Defaults

Both generation and detection are enabled.

Command Modes

Interface configuration

Command History

Release Modification

12.0(3c)W5(9)

New command

Release	Modification
12.0(3c)W5(9)	New command

Usage Guidelines

If the received signal has been lost the yellow alarm should be generated to indicate a frame loss event, thus ensuring that the alarm is sent to the remote end.

When the remote end is transmitting a yellow alarm indicating a frame loss event, the yellow alarm detection must be enabled to detect the alarm condition.

Disable the yellow alarm generation and detection depending upon the circumstances. Enabling yellow detection would be useless if the remote end has yellow generation disabled.

Examples

The following example shows how to enable the generation and detection of yellow alarm.

Switch(config)# interface atm 0/1/0
Switch(config-if)# yellow generation
Switch(config)# interface atm 0/1/0
Switch(config-if)# yellow detection

The following examples shows how to disable the generation and detection of yellow alarm.

Switch(config)# interface atm 0/1/0
Switch(config-if)# no yellow generation
Switch(config)# interface atm 0/1/0
Switch(config-if)# no yellow detection

Table of Contents

Y Commands

Y Commands

yellow (Catalyst 8510 MSR and LightStream 1010)