Cisco Systems ASR 1000 Series How the Cisco ASR1000-RP1 Alarm LEDs Work, Label Type Description

Chapter 2 Cisco ASR 1000 Series Routers Components

Cisco ASR 1000 Series Route Processor

How the Cisco ASR1000-RP1 Alarm LEDs Work

The Cisco ASR1000-RP1 faceplate displays the CRIT, MAJ, and MIN alarm indicator LEDs. A female DB-25 connector on the power supply faceplate enables you to attach an external alarm monitoring facility to the router. See Cisco ASR 1006 Router DB-25 Pinout Assignments for Alarm Relays, page A-4.

The alarm signals sent to this DB-25 connector are identical in function to those sent to the system LEDs on the Cisco ASR1000-RP1. Each alarm consists of three contact pins that are switched when an alarm becomes active which causes a corresponding contact closure between the DB-25 connector pins.

Thus, a critical, major, or minor alarm condition detected in the router can trigger a simultaneous fault indication in some of the following ways:

•System alarm LEDs—The three system alarm LEDs on the Cisco ASR1000-RP1 faceplate constitute the standard method of alarm notification in the router. These LEDs indicate router status at all times, but you must directly observe these LEDs to become aware of a router alarm condition.

•External alarm monitoring facility—By equipping your router with a telco-style external alarm monitoring facility, you can provide a more physical indication of router status. A visual alarm, however, can be reset only by resolving the problem that caused the alarm condition.

For example, the same alarm signal that illuminates one of the three system alarm LEDs on the Cisco ASR1000-RP1 faceplate for a critical, major, or minor alarm condition is also sent to the DB-25 connector by means of an associated alarm relay in the Cisco ASR1000-RP1.

An external alarm monitoring facility uses this signal to activate a visible alarm (such as a flashing light) or an audible alarm that immediately alerts site personnel to the existence of a router alarm condition.

An external audible alarm can be reset by clearing the condition that caused the alarm or by pressing the Audible Cutoff (ACO) button on the Cisco ASR1000-RP1. An audible alarm can be sounded to immediately alert you of an alarm condition in the router. An audible alarm generated by the system continues to sound until you either clear the alarm condition itself or press the ACO button to silence the alarm. Pressing this button does not resolve the alarm condition.

Table 2-2lists the Cisco ASR 1000 Series Route Processors connectors and description.

Table 2-2	Cisco ASR 1000 Series Route Processor Connectors
Label		Type	Description
ACO		Audible Cutoff button	When you press this button, an interrupt is
			generated informing software that the audible alarm
			relays will be disabled. This interrupt generates to
			both processors.
0		USB0 interface	Side-by-side USB connector used with memory
			sticks or smart cards for secure key distribution
1		USB1 interface	Side-by-side USB connector used with memory
			sticks or smart cards for secure key distribution
BITS		RJ-45 connector	Indicates BITS timing reference.
MGMT		One RJ-45 jack for	The route processor has an ENET port with a RJ-45
ETHERNET		copper Ethernet	connector to attach a management device or
		Management Port	network for network management.

Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide

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