Chapter 1 Product Overview

Front-Panel Description

Table 1-2 System LED (continued)

Color

System Status

 

 

Green

System is operating normally.

 

 

Amber

System is receiving power but is not functioning properly.

 

 

RPS LED

The RPS LED shows the RPS status. Table 1-3lists the LED colors and their meanings.

Table 1-3 RPS LED

Color

RPS Status

 

 

Off

RPS is off or not properly connected.

 

 

Solid green

RPS is connected and ready to provide back-up power, if required.

 

 

Blinking green

RPS is connected but is unavailable because it is providing power to another device

 

(redundancy has been allocated to a neighboring device).

 

 

Solid amber

The RPS is in standby mode or in a fault condition. Press the Standby/Active button

 

on the RPS, and the LED should turn green. If it does not, the RPS fan could have

 

failed. Contact Cisco Systems.

 

 

Blinking amber

The internal power supply in a switch has failed, and the RPS is providing power

 

to the switch (redundancy has been allocated to this device).

 

 

For more information about the Cisco RPS 300 or the Cisco RPS 675, see the documentation included with the RPS.

Port LEDs and Modes

Each RJ-45 port and GBIC module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port mode determines the type of information displayed through the port LEDs. Table 1-4lists the mode LEDs and their associated port modes and meanings.

To select or change a mode, press the Mode button (or Mode label on the Catalyst 3550-48 switch) until the desired mode is highlighted. When you change port modes, the meanings of the port LED colors also change. Table 1-5explains how to interpret the port LED colors in different port modes.

You can also use the Mode button to activate the Express Setup program or to clear the switch IP address and all switch settings. See the “Clearing the Switch IP Address and Configuration” section on page 3-1for more information.

Table 1-4 Port Mode LEDs

 

 

Mode LED

Port Mode

Description

 

 

 

 

 

 

 

STATUS

Port status

The port status. This is the default mode.

 

 

 

 

 

 

 

UTIL1

Switch utilization

The current bandwidth in use by the switch. (See Figure 1-4

 

 

 

 

through Figure 1-8.)

 

 

 

 

 

 

 

DUPLX

Port duplex mode

The port duplex mode: full duplex or half duplex.

 

 

 

 

 

 

 

 

 

 

 

Catalyst 3550 Switch Hardware Installation Guide

 

 

 

 

 

 

 

 

OL-6155-01

 

 

 

1-7

 

 

 

 

 

 

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Cisco Systems 3550 manual Color RPS Status, Mode LED Port Mode Description
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3550 specifications

Cisco Systems 3550 is a series of enterprise-class multilayer switches that have gained popularity in both enterprise and service provider networks. Introduced in the early 2000s, the 3550 series was designed to meet the increasing demand for advanced networking capabilities, including Layer 2 and Layer 3 switching, making it suitable for various network environments.

A standout feature of the Cisco 3550 is its support for advanced Layer 3 switching capabilities. This means it can perform routing functions similar to traditional routers while maintaining the speed and efficiency of a switch. The 3550 facilitates IP routing, enabling enhanced communication among different subnets without the need for additional routing devices.

The Cisco 3550 series is equipped with a range of ports, typically providing up to 48 Ethernet 10/100 ports and optional Gigabit Ethernet ports, ensuring scalability and flexibility in various network designs. The switches support Power over Ethernet (PoE), allowing the delivery of electrical power through Ethernet cables to connected devices, such as IP phones and wireless access points, streamlining installations and reducing cable management complexity.

Quality of Service (QoS) is another essential feature of the Cisco 3550. The switch supports advanced QoS mechanisms, which provide the ability to prioritize traffic. This is crucial in environments where bandwidth is limited, as it ensures that time-sensitive applications, like VoIP and video conferencing, receive sufficient bandwidth to function optimally.

In terms of security, the Cisco 3550 includes features such as access control lists (ACLs), port security, and VLANs (Virtual Local Area Networks). These features help in segmenting network traffic and preventing unauthorized access to sensitive information, thereby enhancing network security.

The Cisco 3550 is highly regarded for its robustness and reliability, making it a suitable choice for various organizations looking to maintain high availability in their networking environments. Its management capabilities include support for Cisco's IOS software, which offers a command-line interface for configuration, as well as options for SNMP and web-based management tools.

Overall, the Cisco Systems 3550 series is well-regarded for its multilayer switching capabilities, comprehensive feature set, and versatility in meeting the diverse needs of modern networking, making it a favored solution for businesses aiming to build efficient and secure network infrastructures.
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