Chapter 2 Switch Installation

Powering the Switch and Connecting Devices

Step 6 Using a ratcheting torque screwdriver, torque each ground-lug screw to 15 lbf-in. (240 ozf-in.)

Figure 2-18 Torquing Ground-Lug Screws on the Switch

DC 1

100-240V~ 5-3A 50/60Hz

CONSOLE

93286

Torque to 15 lbf-in.

Powering the Switch and Connecting Devices

These sections describe powering the switch, connecting an RPS, connecting cables, and inserting GBICs.

Powering the Switch

Use the supplied AC power cord to connect the AC power socket on the switch rear panel to an AC power outlet.

When the switch powers on, it automatically begins the power-on self-test (POST), a series of tests that verifies that the switch functions properly. When POST completes, the system LED is green. If the switch fails POST, the system LED is amber, and the port LED associated with the particular test is amber.

If POST fails, see Chapter 3, “Troubleshooting,” to determine a course of action.

Catalyst 3550 Switch Hardware Installation Guide

2-16

OL-6155-01

 

 

Page 46
Image 46
Cisco Systems 3550 manual Powering the Switch and Connecting Devices

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.