Specifications

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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
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Chapter 4 Getting Started with CMS
Front Panel View
Alarm Relay and Power LEDs on Catalyst 2955 Switches
The alarm relay LED images are labeled Alarm MAJ and MIN on the CMS Front Panel view and show
when a major or minor alarm has occurred on the switch. You can configure alarm relays for traffic signal
failure or degradation, equipment malfunction, and SNMP messages. Red means that an alarm has
occurred. No LED, or black, means the absence of alarms on the switch.
Power A and Power B LED images on the CMS Front Panel view for the Catalyst 2955 switch show the
status of the primary (A) and secondary (B) power supplies. Green means that the power supply is
connected and operating; red means that the power supply is off or not installed. Power B is green only
if a secondary power supply is installed and is operating; otherwise, it is red.
Note Refer to the online help for more information about configuring alarm relay settings.
Redundant Power System LED
The Redundant Power System (RPS) LED shows the RPS status, as listed in Table 4-3 and Table 4-4.
Certain switches in the switch cluster use a specific RPS model:
• Cisco RPS 300 (model PWR300-AC-RPS-N1)—Catalyst 2900 LRE XL, Catalyst 2950,
Catalyst 2950 LRE, Catalyst 3524-PWR XL, and Catalyst 3550 switches
• Cisco RPS 600 (model PWR600-AC-RPS)—Catalyst 2900 XL and Catalyst 3500 XL switches,
except the Catalyst 2900 LRE XL and Catalyst 3524-PWR XL switches
• Cisco RPS 675 (model PWR675-AC-RPS-N1=)—Catalyst 2950, Catalyst 2950 LRE, and
Catalyst 3550 switches.
Note The Cisco RPS 675 does not support the Catalyst 3550-24-DC switch.
Note The Cisco RPS 300 does not support the Catalyst 2955 switch.
Refer to the appropriate switch hardware documentation for RPS descriptions specific for the switch.
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Table 4-3 Cisco RPS 300 and Cisco RPS 675 LED
Color RPS Status
Black (off) RPS is off or is not installed.
Green RPS is connected and operational.
Blinking green RPS is providing power to another switch in the stack.