Cisco Systems 8510 CSR, 8540 CSR appendix Configuring Sonet Alarms

Chapter 4 Configuring Interfaces

Configuring the POS OC-12c Uplink Interface (Catalyst 8540)

Configuring SONET Alarms

The OC-12c POS uplink interface supports SONET alarm monitoring. To configure alarm monitoring, perform the following steps, beginning in global configuration mode:

	Command	Purpose
Step 1
	Router(config)# interface pos	Enters interface configuration mode and specifies the POS
	slot/subslot/interface	interface to configure.
	Router(config-if)#
Step 2
	Router(config-if)# pos report	Permits console logging of selected SONET alarms.
	{b1-tca b2-tca b3-tca lais	The alarms are as follows:
	lrdi pais plop prdi plm-p
		• b1-tca(B1 bit error rate [BER] threshold crossing alarm)
	sd-ber sf-ber slof slos
	uneq-p}	• b2-tca(B2 BER threshold crossing alarm)
		• b3-tca(B3 BER threshold crossing alarm)
		• lais (line alarm indication signal)
		• lrdi (line remote defect indication)
		• pais (path alarm indication signal)
		• plop (path loss of pointer)
		• prdi (path remote defect indication)
		• plm-p(payload label, C2 mismatch alarm)
		• sd-ber(LBIP BER in excess of threshold)
		• sf-ber(signal failure BER)
		• slof (section loss of frame)
		• slos (section loss of signal), uneq-p(path unequipped C2
		alarm).
		The b1-tca,b2-tca,b3-tca,sf-ber,slof, and slos errors are
		reported by default.
Step 3
	Router(config-if)# pos threshold	Sets the BER threshold values of the specified alarms. Default
	{b1-tca b2-tca b3-tca sd-ber	values are 6 for b1-tca, b2-tca, b3-tca, and sd-ber; 3 for sf-ber.
	sf-ber}rate
Step 4
	Router(config-if)# pos ais-shut	Sends a line alarm indication signal (AIS-L) to the other end of
		the link after a shutdown command has been issued to the
		specified POS interface. By default, the AIS-L is not sent to the
		other end of the link.
		You can stop transmitting the AIS-L by issuing either the
		no shutdown or the no pos ais-shut commands.

To determine which alarms are reported on the POS interface, and to display the BER thresholds, use the show controllers pos command, as described in the next section, “Verifying the POS Configuration” section on page 4-22.For a detailed description of the pos report and pos threshold commands, refer to the Cisco IOS Interface Command Reference publication.

	Layer 3 Switching Software Feature and Configuration Guide
4-20	78-6235-04, Cisco IOS Release 12.0(10)W5(18)