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Cisco SG500-28 - User Manual

Cisco SG500-28
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Cisco 500 Series Stackable Managed Switches

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Summary

Cisco Switch Mounting and Environment

Ambient Temperature Guidelines

Lists maximum ambient temperatures for various switch models to prevent overheating.

Rack-Mount Installation Guide

Provides step-by-step instructions for physically mounting the switch in a rack.

Network Connectivity Setup

Connecting Devices to the Network

Details the process of connecting the switch to network devices using Ethernet cables.

Power over Ethernet (PoE) Specifications

PoE Capabilities and Safety

Information on power delivery, supported PoE standards, and safety warnings for PoE models.

Switch Configuration and Access

Pre-Configuration Steps

Outlines necessary checks and prerequisites before configuring the switch.

Accessing and Managing the Switch

Describes methods for accessing and managing the switch, focusing on the web interface.

Advanced Stacking Features

Stack Unit Modes Explained

Details various operating modes for switches in a stack, like Standalone and Hybrid.

Stack Configuration Options and Scenarios

Covers typical stack configurations, port speeds, and example scenarios for stacking.

External Features and Port Identification

Front Panel Layout and LEDs

Describes the front panel layout, including ports, LEDs, and their functions.

Model-Specific Panel Views

Visual guides to the left and right side panels for different 500 series models.

Ethernet and SFP Port Details

Details on RJ-45 Ethernet and SFP/SFP+ ports for connectivity and stacking.

Device Maintenance and Troubleshooting

Reset Button and Back Panel Ports

Explains the reset button and identifies power/console ports on the back panel.

Restoring Factory Default Settings

Step-by-step guide to reset the switch to its original factory settings.

Troubleshooting Network Connectivity

Provides guidance on diagnosing and resolving network connectivity problems.

Summary

Cisco Switch Mounting and Environment

Ambient Temperature Guidelines

Lists maximum ambient temperatures for various switch models to prevent overheating.

Rack-Mount Installation Guide

Provides step-by-step instructions for physically mounting the switch in a rack.

Network Connectivity Setup

Connecting Devices to the Network

Details the process of connecting the switch to network devices using Ethernet cables.

Power over Ethernet (PoE) Specifications

PoE Capabilities and Safety

Information on power delivery, supported PoE standards, and safety warnings for PoE models.

Switch Configuration and Access

Pre-Configuration Steps

Outlines necessary checks and prerequisites before configuring the switch.

Accessing and Managing the Switch

Describes methods for accessing and managing the switch, focusing on the web interface.

Advanced Stacking Features

Stack Unit Modes Explained

Details various operating modes for switches in a stack, like Standalone and Hybrid.

Stack Configuration Options and Scenarios

Covers typical stack configurations, port speeds, and example scenarios for stacking.

External Features and Port Identification

Front Panel Layout and LEDs

Describes the front panel layout, including ports, LEDs, and their functions.

Model-Specific Panel Views

Visual guides to the left and right side panels for different 500 series models.

Ethernet and SFP Port Details

Details on RJ-45 Ethernet and SFP/SFP+ ports for connectivity and stacking.

Device Maintenance and Troubleshooting

Reset Button and Back Panel Ports

Explains the reset button and identifies power/console ports on the back panel.

Restoring Factory Default Settings

Step-by-step guide to reset the switch to its original factory settings.

Troubleshooting Network Connectivity

Provides guidance on diagnosing and resolving network connectivity problems.

Overview

This document describes the Cisco 500 Series Stackable Managed Switches, a line of network communication devices designed for small and medium-sized businesses. These switches are engineered to be operational right out of the box, functioning as standard Layer 2 and Layer 3 switches that forward packets between connected devices upon power-up.

The Cisco 500 Series switches offer robust functionality for network connectivity and management. They are designed to be deployed in various network environments, providing a flexible solution for connecting computers, printers, network storage, and other network devices. A key feature of these switches is their stackable nature, allowing multiple units to be combined into a single logical unit, which simplifies management and increases network capacity and resilience.

Function Description

The primary function of the Cisco 500 Series switches is to facilitate network communication by forwarding data packets. They operate at both Layer 2 (data link layer) and Layer 3 (network layer) of the OSI model, enabling them to handle both local network traffic and routing functions. In their factory default configuration, they are ready to forward packets immediately after being powered on, making initial setup straightforward.

These switches support Power over Ethernet (PoE) on specific models, allowing them to supply DC power to attached Powered Devices (PDs) such as VoIP phones, IP cameras, and wireless access points over the same Ethernet cable that carries data. This eliminates the need for separate power outlets for these devices, simplifying deployment and reducing cabling complexity. The PoE models are capable of detecting and supplying power to both pre-standard and standard PoE Powered Devices. However, users are cautioned to disable PoE on ports connected to other Power Sourcing Equipment (PSEs) to prevent false detection and potential operational issues.

The stacking capability is a significant feature, allowing up to eight 500 Series switches to be connected together to form a single, high-performance stack. This provides increased port density, aggregated bandwidth, and simplified management as the entire stack can be managed as a single entity. The switches support different stack unit modes:

  • Standalone: The device operates independently and is not connected to any other device as part of a stack.
  • Native Stacking: Devices of the same type (all Sx500s or all SG500Xs) connect through their stack ports to form a stack.
  • Basic Hybrid: Allows different types of 500 Series devices to form a stack. In this mode, any device can function as master or backup, but only 5G stacking ports can be used. VRRP (Virtual Router Redundancy Protocol) and RIP (Routing Information Protocol) are not supported.
  • Advanced Hybrid: Also allows different 500 Series devices to form a stack, but with enhanced capabilities. Only SG500X devices can function as master/backup, and auto-numbering of units is not supported. VRRP and RIP are supported in this mode. Sx500 devices can only act as slaves, with up to six Sx500 units stackable with two SG500X devices.
  • Advanced Hybrid XG: Specifically for SG500XG series devices connecting to other SG500X devices, offering the SG500X feature set with VRRP and RIP support. Any device can function as master, backup, or slave.

The stack ports can be configured with various speeds (1G, 5G, 10G, or auto-detection) depending on the switch model and stacking option chosen. It is crucial that stack ports are configured with the same port speed or have compatible speed capabilities on the modules/cables to ensure proper stack formation.

Usage Features

The Cisco 500 Series switches are designed for ease of use and flexible deployment. They can be placed on a flat surface or mounted in a standard 1-rack unit (1RU) rack. When rack-mounting, it's important to ensure proper airflow and avoid mechanical or circuit overloading. The package includes a rackmount kit, power cord, serial cable, and rubber feet for various installation scenarios.

Connecting network devices is straightforward:

  1. Connect an Ethernet cable from a network device (computer, printer, network storage) to one of the numbered Ethernet ports on the switch.
  2. The Ethernet port light will turn green when an active connection is established.
  3. Cisco recommends using Cat5 or better cable for Gigabit connectivity, with a maximum cabling distance of 100 meters (328 feet).

Management of the switch can be done through two primary methods:

  • Web-Based Interface: This is the recommended method for most users. The switch uses a factory default IP address (192.168.1.254). Users can access the interface by connecting their computer to the switch, configuring their computer's IP address within the same subnet (e.g., 192.168.1.1 to 192.168.1.253), and then entering the switch's IP address into a web browser. The default login credentials are "cisco" for both username and password. Upon the first login, users are prompted to change the default password for security.
  • Command Line Interface (CLI) via Console Port: For advanced users, the switch can be configured using the CLI through a serial console port. This requires connecting a computer to the switch's console port using the provided serial cable and using a terminal application (e.g., HyperTerminal) with specific parameters (115200 bits per second, 8 data bits, no parity, 1 stop bit, no flow control). The default username and password are also "cisco," and users are prompted to change the password on the first login.

The front panel of the switch features various LEDs that provide visual status indicators:

  • Master LED (Green): Steady when the switch is a stack master.
  • Fan LED (Green): Steady when the cooling fan is operational, blinks green if there is a failure.
  • System LED (Green): Steady when powered on, flashes during booting, self-tests, or IP address acquisition. Flashes amber for hardware failures.
  • Stack ID LEDs (Green): Indicate the switch's Stack ID when stacked. For Stack IDs greater than 4, a combination of LEDs lights up to represent the ID.
  • LINK/ACT LED (Green): Located on the left of each port, steady for a link, flashes for traffic.
  • PoE LED (Amber): Located on the right of a PoE port, steady when power is supplied to a device.
  • 100M LED (Green): Located on the right of the port, steady for a 100 Mbps link. Off if speed is under 100 Mbps or no cable.
  • XG LED (Green): Located on the right of a 10G port, steady for a 10G link. Off if speed is under 10G or no cable.
  • Gigabit LED (Green): Located on the right of a GE port, steady for a 1000 Mbps link. Off if speed is under 1000 Mbps or no cable.
  • SFP LED (Green): Located on the right of a GE port, steady when a connection is made through the shared port, flashes for traffic.

Maintenance Features

The Cisco 500 Series switches include features to aid in maintenance and troubleshooting.

  • Reset Button: A reset button on the front panel allows for two functions:
    • Reboot: Press and hold for less than 10 seconds to reboot the switch.
    • Factory Default Settings Restore: Disconnect the switch from the network or disable DHCP servers, then with power on, press and hold for more than 10 seconds to restore factory defaults.
  • Configuration Saving: It is crucial to save any configuration changes made through the web-based interface to the Startup configuration before exiting or rebooting the switch. Failure to do so will result in the loss of all current changes. When using the CLI, the command copy running-config startup-config is used to save changes.
  • Troubleshooting Connection Issues: The manual provides guidance for troubleshooting common connection problems:
    • Bad Ethernet Connection: Check port LEDs and cable connectors.
    • Bad Console Port Connection: Verify console cable connections and terminal application parameters.
    • Wrong IP Address: Confirm the switch's IP address (via System LED or console port) and ensure no other device uses the same IP.
    • No IP Route: If the switch and computer are in different IP subnets, a router is needed.
    • Unusually Long Access Time: New connections might take 30-60 seconds to become operational due to spanning tree loop detection logic.

The switches support SFP (small form-factor pluggable) and SFP+ modules, which are connection points for linking to other switches. These ports are also known as miniGigaBit Interface Converter (miniGBIC) ports. The SFP ports are compatible with various Cisco and other brand modules, while SFP+ optical modules are supported in 500X switches for higher-speed connections. SFP interfaces are combination ports, sharing functionality with an adjacent RJ-45 port; when the SFP is active, the RJ-45 port is disabled.

The Cisco 500 Series Stackable Managed Switches are designed to be a reliable and scalable solution for network infrastructure, offering a balance of performance, flexibility, and ease of management for growing businesses.

Cisco SG500-28 Specifications

General IconGeneral
Ports28
Port TypeGigabit Ethernet
LayerLayer 3
Switching Capacity56 Gbps
PoE SupportNo
Form FactorRack-mountable
RAM256 MB
Flash Memory32 MB
Power SupplyInternal
Jumbo Frame Support9KB
VLAN SupportYes
Operating Temperature32°F to 113°F (0°C to 45°C)
Operating Humidity10% to 90% non-condensing
Dimensions17.3 x 10.2 x 1.7 in (440 x 260 x 44 mm)
MAC Address Table Size16, 000 entries

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