【正文】 t the customer will experience a minimum of disruption in service while the new equipment is installed. onsite work technician The pleted checklist is verified by the customer representative. 61 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Installing the CPE Documentation includes all aspects of how the equipment is configured, diagrams of how the equipment is installed, and checklists to validate the correct installation. An installation and verification checklist helps a work technician avoid errors and ensures that the installation is done efficiently and correctly. 62 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Installing the CPE Professional Image Dress for Success Language and Attitude 63 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Workplace Safety It is important to minimize the risk of injury when installing work equipment by following good safety practices. Many employers offer safety training as part of their employee services. 64 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . customer Connections over a WAN When a pany or anization has locations that are separated by large geographical distances, it may be necessary to use the telemunications service provider (TSP) to interconnect the LANs at the different locations. lease connections WAN connections vary in the type of connector used, in bandwidth and in cost. These works that connect LANs in geographically separated locations are referred to as Wide Area Networks (WANs). 65 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . customer Connections over a WAN A pointtopoint WAN connection is a predefined munications path from the customer premises through a telemunications service provider (TSP) work. Pointtopoint lines are usually leased from a TSP. A circuit switched connection functions similarly to the way a phone call is made over a telephone work. In a packet switched WAN connection, works have connections into the TSP switched work. Many customers share this TSP work. Instead of the circuit being physically reserved from source to destination, as in a circuit switched work. Each customer has their own virtual circuit. A virtual circuit is a logical path between the sender and receiver. 66 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Choosing a WAN Connection The choice made is largely dependent on the bandwidth and cost of the WAN connection. Another factor that affects the decision on which WAN to choose is the nature of how the business plans to use the new WAN connection. For some businesses, the ability to get a service level agreement (SLA) attached to their WAN connection will also affect their decision. 67 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Choosing a WAN Connection There are many things to consider when planning a WAN upgrade: Existing Infrastructure Customer Requirements WAN Options Present the Plan Lab 68 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Configuring a Cisco Router using SSH Secure Shell (SSH) is a protocol that functions similarly to Tel. SSH protects all authentication and transmitted data using encryption. SSH allows safe access a remote device over an insecure work, such as the Inter. Lab 69 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Configuring WAN connections Some WAN connections support Ether interfaces. Other WAN connections support serial interfaces. For a serial connection it is important to have a preconfigured clock rate that is the same on both ends of the connection. The clock rate is set by the DCE device, which is typically the CSU/DSU. The Data Terminal Equipment (DTE) device, typically the router, accepts the clock rate set by the DCE. PT 70 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) . Summary ? The Integrated Services Router (ISR) is a good choice for small to medium businesses and ISPmanaged customers. ? ISRs can be initially configured using SDM or the router IOS CLI. ? When using the CLI, “show” mands verify configuration elements. ? Switches are assigned IP addresses by configuring them on the management interface, VLAN 1. ? An installation plan can minimize disruption to a work when new devices are being added. ? Good safety practices must be following when performing installations, to minimize the danger to both technician and device. ? Documentation is necessary, both when configuring and when installing work devices. 71 思科網(wǎng)絡(luò)技術(shù)學(xué)院理事會(huì) .