Chapter 2 Preparing for Installation

Electrical Equipment Guidelines

Four M4 x 8-mm Phillips flathead screws to secure the rack-mount brackets to the chassis

Six 10-32 x 3/8-inch slotted binderhead screws to secure the rack-mount brackets to the rack rails

Two cable-management brackets to relieve the strain on installed port adapter interface cables

Four M4 x 8-mm Phillips flathead screws to secure the cable-management brackets to the chassis or the rack-mount brackets

Two cable-management brackets for the NPE-G1 or NPE-G2

In addition, you might need the following external equipment:

One optical cable-management bracket for the NPE-G1 or NPE-G2

One RJ-45 cable to connect to the Fast Ethernet Management Port on the NPE-G2

Data service unit (DSU) to connect each serial port to an external network

One serial port adapter cable for each serial port to connect the port with the remote device or network

T1 channel service unit/data service unit (CSU/DSU) that converts the High-Level Data Link Control (HDLC) synchronous serial data stream into a T1 data stream with the correct framing and ones density to connect a serial port to a T1 network. (Some telephone systems require a minimum number of 1 bits per time unit in a data stream, called ones density.) Several T1 CSU/DSU devices are available as additional equipment, and most provide either a V.35, EIA/TIA-449, or EIA-530 electrical interface.

Ethernet transceiver

Token Ring multistation access unit (MSAU)

Electrical Equipment Guidelines

The port adapters and power supplies are designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system. However, you must power down the system before removing or replacing the I/O controller, Port Adapter Jacket Card, and network services engine (NSE) or network processing engine (NPE).

Caution Always tighten the captive installation screws on the network processing engine or network services engine and I/O controller. These screws prevent accidental removal, provide proper grounding for the system, and help ensure that the bus connectors are properly seated in the midplane.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are improperly handled, can result in complete or intermittent system failures. The network processing engine or network services engine, I/O controller, and each port adapter consists of a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the carrier. Although the carrier helps protect the boards, use an antistatic strap whenever handling the network processing engine or network services engine, I/O controller, and port adapters. Handle the carriers by the handle and the carrier edges only; never touch the boards or connector pins.

Cisco 7200 VXR Installation and Configuration Guide

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Cisco Systems 7200 VXR manual Electrical Equipment Guidelines, Preventing Electrostatic Discharge Damage

7200 VXR specifications

The Cisco Systems 7200 VXR Series is a robust and highly scalable modular router designed to meet the demands of service providers and enterprises seeking high-performance solutions for their network infrastructures. Launched as part of the Cisco 7200 series, the VXR (Virtual Extensible Routing) variant enhances capabilities while providing effective support for a wide range of applications, including Internet Protocol (IP) routing, Voice over IP (VoIP), and Virtual Private Network (VPN) configurations.

At the core of the 7200 VXR is its modular design, which enables network administrators to customize the router according to their specific needs. The router supports a variety of interface cards, processing engines, and power supply options, ensuring flexibility for diverse network environments. This modularity facilitates easy upgrades and expansions, making it ideal for growing enterprises and service providers looking to future-proof their networks.

One of the standout features of the Cisco 7200 VXR is its impressive routing performance. It can handle a high level of traffic with low latency, which is critical for bandwidth-intensive applications. The router supports a wide array of routing protocols, including Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and Integrated Intermediate System-to-Intermediate System (IS-IS), providing versatility for various network topologies.

The 7200 VXR also incorporates advanced features for enhanced security and reliability. With support for IPsec VPNs, it enables secure data transmission across untrusted networks. The router also includes features like Quality of Service (QoS) for prioritizing network traffic, ensuring critical applications receive the bandwidth they require even during peak loads.

In terms of scalability, the Cisco 7200 VXR can support hundreds of thousands of routes and MAC addresses, making it suitable for large metropolitan area networks (MANs) as well as enterprise backbone applications. It also provides the capability to support IPv4 and IPv6 networks, preparing organizations for a transition to next-generation internet protocols.

Additional characteristics of the Cisco 7200 VXR include enhanced manageability through the Cisco IOS software, which offers a comprehensive command-line interface and support for network management protocols. The router is also energy-efficient, with options for redundant power supplies that ensure continuous availability and minimal downtime in mission-critical applications.

Overall, the Cisco Systems 7200 VXR represents a powerful solution that combines performance, scalability, and security, making it an excellent choice for organizations looking to enhance their network capabilities in a rapidly evolving technological landscape.