Chapter 2 Preparing for Installation

Power Requirements

Power Connection Guidelines for AC-Powered Systems

This section provides basic guidelines for connecting AC-input power supplies to site source AC.

•In some systems, you may decide to use an uninterruptible power supply (UPS) to protect against power failures at your site. Be aware when selecting a UPS that some UPS models that use ferroresonant technology can become unstable when operating with the ME 6524 switch power supplies that use power factor correction (PFC). This configuration can cause the output voltage waveform to the switch to become distorted resulting in an undervoltage situation in the system.

•In systems configured with two power supplies, connect each of the two power supplies to a separate input power source. If you fail to do this, your system might be susceptible to total power failure due to a fault in the external wiring or a tripped circuit breaker.

•The AC-input power supply has a detachable power cord that allows you to connect each power supply to the site power source.

•To prevent a loss of input power, be sure that the total maximum load on each source circuit is within the current ratings of the wiring and breakers.

•If you are using a 200/240 VAC power source in North America, the circuit must be protected by a two-pole circuit breaker.

•Ensure that all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) and any additional local codes.

•The source AC outlet must be within 6 feet (1.8 meters) of the system and should be easily accessible.

•The AC power receptacles used to plug in the chassis must be the grounding type. The grounding conductors that connect to the receptacles should connect to protective earth ground at the service equipment.

•The circuit breaker is considered the disconnect device and should be easily accessible.

•You must protect the circuit by using a dedicated two-pole circuit breaker. The circuit breaker should be sized according to the power supply input rating and local or national code requirements.

Power Connection Guidelines for DC-Powered Systems

This section provides basic guidelines for connecting DC-input power supplies to site source DC.

When preparing your site for the switch installation, follow these requirements:

•In systems configured with two power supplies, connect each of the two power supplies to a separate input power source. If you fail to do this, your system might be susceptible to total power failure due to a fault in the external wiring or a tripped circuit breaker.

•To prevent a loss of input power, be sure that the total maximum load on each source circuit is within the current ratings of the wiring and breakers.

•You can connect the DC-input power supply to the power source with heavy gauge wiring with either insulated crimp-on spade lugs or insulated crimp-on ring connectors connected to a terminal block. The wire gauge size and connector size is determined by local electrical codes and restrictions.

•Ensure that all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) and any additional local codes.

•Ensure that the DC return remains isolated from the system frame and the chassis (DC-I).

Cisco ME 6500 Series Ethernet Switch Installation Guide

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Cisco Systems ME 6500 manual Power Connection Guidelines for AC-Powered Systems
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ME 6500 specifications

The Cisco Systems ME 6500 is a sophisticated Ethernet switch designed to cater to the demanding needs of service providers and large enterprises. Engineered to deliver high performance and reliability, the ME 6500 series is ideal for both metro Ethernet applications and data center environments. One of its standout features is the ability to handle massive bandwidth, making it suitable for high-capacity networks. The switch supports a range of Ethernet services that facilitate seamless connectivity and network expansion.

At the core of the ME 6500 is its ability to provide Layer 2 and Layer 3 functionalities, which allows for flexibility in network design. This dual-layer capability enhances the switch's efficiency in managing traffic and ensures optimal forwarding of data packets. In addition, the ME 6500 series supports a wide range of Ethernet interfaces, including 10 Gigabit and 1 Gigabit Ethernet ports, which are essential for accommodating diverse bandwidth requirements.

One of the defining characteristics of the Cisco ME 6500 is its scalability. It supports up to 192 10 Gigabit Ethernet ports within a single chassis, enabling organizations to expand their network without compromising performance. Furthermore, the switch includes advanced Quality of Service (QoS) features that allow for traffic prioritization, which is crucial for maintaining the performance of voice and video services across the network.

The ME 6500 switch is also equipped with robust security features, including Access Control Lists (ACLs) and secure management protocols. These features protect sensitive data as it traverses the network, ensuring that only authorized users have access to critical resources. Management of the switch is simplified through Cisco’s management tools, allowing network administrators to monitor, configure, and troubleshoot the device efficiently.

Additionally, the switch supports various redundancy protocols, including Rapid Spanning Tree Protocol (RSTP) and Link Aggregation Control Protocol (LACP), ensuring high availability and minimizing downtime.

Overall, the Cisco ME 6500 is a powerful and versatile solution that meets the heavy demands of modern network environments, delivering outstanding performance, security, and scalability for both service providers and large enterprises. Its advanced features make it a go-to choice for organizations looking to future-proof their networking infrastructure.
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