Enterasys Networks BL-89710ENT, BL-89720ENT, BL-89520ENT Powering Up, Power Sensing Considerations

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Powering Up

Powering Up

Simply plug one end of the power cord into the unit, and the other end into a grounded AC power source. Units are typically connected to a power strip or other power outlet that may be cycled on and off. An uninterruptible power supply may also be used.

Check to make sure each module installed displays a green Power LED (see Figure 2-4). Verify that any module that does not display a green LED is properly seated in the chassis backplane.

Power Sensing Considerations

The Mid-Span IEEE 802.3af PoE modules look for a 25K resistance in the sense phase, but can have trouble properly sensing the class resistor value when the powered device has any ground connection. This is especially true when some ground currents may exist such as from a motor or a fluorescent ballast. If the mount results even in a large capacitance to ground, it may cause the mid-span module to reject the load as a short.

For best consistent results regardless of local electrical conditions, the physical mounting of the PoE clients should be electrically insulated from ground. The use of an insulated bracket and nylon washers/screws may be necessary.

For example, make sure that

•the PoE client is not mounted with a metal bracket and screws to the metal drop ceiling structural grid, or

•the fluorescent light fixtures are not connected to the junction box through flexible metal conduit.

If problems exist, refer to the troubleshooting checklist in Chapter 3, Troubleshooting.

If you require assistance, contact Enterasys Networks using one of the methods described in “Getting Help” on page x.

Mid-Span Power Hub 20-Port and 10-Port User’s Guide 2-5

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Contents Mid-Span Power Hub Port and 10-Port User’s Guide Page Regulatory Compliance Information Industry Canada Notice ONE-YEAR Limited Warranty Enterasys Networks, Inc Firmware License Agreement Page Page Contents Figures Document Conventions About This GuidePurpose Who Should Use This GuideSupport@enterasys.com Getting HelpPort Indicators Functions and FeaturesIntroduction Port Indicators Introduction Verifying the Kit Installation and ConnectionKit Contents Technical Considerations Data Power Sensing Considerations Powering UpData From Ethernet Switch Troubleshooting Checklist Problem Recommended Action TroubleshootingProduct Consideration Regulatory Compliance Standards Hardware SpecificationsProduct Standards Port Model BL-89710ENT Port Model Physical/Mechanical SpecificationsPhysical/Environmental Specifications LED Indicators/ModuleAC Power Input Electrical SpecificationsPhysical/Mechanical Specifications Data/Power Splitter SpecificationsElectrical Specifications

BL-89420ENT, BL-89520ENT, BL-89620ENT, BL-89720ENT, BL-89710ENT specifications

Enterasys Networks, a provider of secure networking solutions, offers a range of high-performance networking devices designed to meet the needs of modern data-intensive environments. Among their offerings are the BL-89720ENT, BL-89520ENT, BL-89620ENT, BL-89710ENT, and BL-89420ENT models, which are distinguished by their high scalability, advanced features, and robust performance.

The BL-89720ENT is a cutting-edge switch tailored for enterprise networks that require high throughput and reliability. With its 32 ports, it supports both copper and fiber connections, making it versatile for various deployment scenarios. Key features include layer 2 and layer 3 switching capabilities, advanced Quality of Service (QoS) for traffic prioritization, and comprehensive security features to safeguard sensitive data transmissions.

The BL-89520ENT is another notable model designed for medium to large enterprise networks. This switch provides excellent performance with high-density 10 Gigabit Ethernet ports, ensuring seamless connectivity for bandwidth-hungry applications. It is equipped with intelligent management tools that automate configuration and monitoring, facilitating easy scalability and efficient network management.

The BL-89620ENT is distinguished by its support for Power over Ethernet (PoE), enabling it to power IP phones, cameras, and other devices directly over the network connection. This switch features advanced security protocols and VLAN support, allowing organizations to create segmented networks for improved security and performance.

The BL-89710ENT serves as a reliable solution for organizations seeking cost-effective yet powerful networking options. It offers essential features for layer 2 switching, with options for both PoE and non-PoE configurations, making it adaptable to various environments. Its user-friendly interface simplifies setup and management, ensuring that IT teams can maintain network efficiency.

Lastly, the BL-89420ENT is designed for deployment in environments that require rugged and durable networking equipment. Built for high availability, this model includes features such as fanless operation and wide temperature tolerance, making it ideal for challenging conditions. It supports a range of networking protocols and is well-suited for industrial applications.

In summary, Enterasys Networks’ range of switches, including the BL-89720ENT, BL-89520ENT, BL-89620ENT, BL-89710ENT, and BL-89420ENT, is characterized by high performance, versatility, and advanced management features. These devices are engineered to support the evolving demands of modern enterprises, ensuring connectivity, security, and ease of management in increasingly complex networking environments.
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