- explores some of the implementation options available in Frame Relay deployments. - and covers covers the configuration of the traffic shaping options available for Frame Relay.. - CD-based practice exam—The companion CD contains a large number of questions not included in the text of the book. - Memory recall is based on connectors to the information that needs to be recalled—the greater the number of connectors to a piece of information, the better chance and better speed of recall.. - This track has a more theoretical final exam—the Cisco Internetwork Design (CID) exam. - The focus of this book is the preparation for and passing of the CCNP/CCDP Remote Access Exam.. - Most of the exam is straightforward. - Very few candidates score 100 percent in all catagories—the key is to pass. - Building Scalable Cisco Networks (BSCN) —The BSCN class covers the advanced routing protocols and the scaling issues involved with a large routed network with multiple protocols.. - Building Cisco Multilayer Switched Networks (BCMSN) —The BCMSN class covers the switch infrastructure and the configuration in a large network environment.. - Building Cisco Remote Access Networks (BCRAN) —The BCRAN class covers the dial-up and RAS issues involved in large scale remote access designs and. - The CD has testing software, as well as many additional questions similar to the format of the Remote Access exam. - Selecting a WAN Connection Type for Remote Access Purposes —The WAN connection type directly affects the current and future needs of the customer and influences his or her level of satisfaction. - Determining Site Requirements —The three sites described are central office, branch office, and the small office/home office (SOHO) or remote office (RO). - Availability —The key question here is “Is there ISDN or DSL in my area, and can I get it?” Because we are talking about Remote Access, it is not a given that the service we might want is available.. - Cost —This is one of the final selection criteria for an implementation. - Backup needs and Quality of Service (QoS) —The need for backup links and QoS are important. - The branch office considerations involve connecting to the central site while knowing the value/cost ratio of the bandwidth. - In addition, the availability of the central site connection should be considered. - The purpose of the “Do I Know This Already?” quiz is to help you decide which parts of this chapter to use. - 2 Which of the following does not affect the installation of a router?. - section and the scenarios at the end of the chapter. - warehouse, the reliability of the link may not be mission critical. - Much of the information in the previous bulleted list could be considered common sense;. - The customer effectively owns the bandwidth of the link.. - The control of the circuit is given over to the provider. - Once the election of the access method is made, it is unlikely to change in the near term.. - The products in the following section represent some of the current offerings for Remote Access environments. - The preceding router descriptions represent much of the Cisco product line. - 1 ISDN would be a good choice because of the higher speed. - “back-hoe attack,” the ISDN line has a chance of being uninterrupted.. - Verifying the installation—This section explains how to confirm the physical connectivity of the WAN devices.. - The purpose of the “Do I Know This Already?” quiz is to help you decide what parts of this chapter to use. - Then move into the “Foundation Summary” and “Q&A” sections and the scenarios at the end of the chapter.. - The goals of the network must be laid out ahead of time. - Some of the questions you should consider include. - Which router model(s) support the needs of the site?. - The 2500 is the workhorse of the product line. - Depending on the company and the needs of the telecommuter, a 2500 or 2600 router could be utilized. - If all is well, there is an LED on the front of the router (or on the back by the interface in question) that is green. - The interface specific LEDs are on the back of the chassis, adjacent to the interface in question.. - As traffic traverses the router, the Activity LED blinks according to the volume of the traffic. - Figure 3-4 illustrates the positioning of the LEDs on the 3640 router.. - LINK Located on the back of the router near the Ethernet interface, this LED indicates physical connectivity to the Ethernet segment.. - LEDs are an important part of the router. - They provide a quick status of the router and its interfaces. - Basic asynchronous configuration—This section covers the configuration of the physical interface so that it can communicate with the attached device. - 2 The physical aspects of the router link to the modem must be correctly defined to match the modem parameters.. - 5 Configuration of the Attached Modem 9–10. - 12 Which of the following would trigger a chat script start?. - This includes the “Foundation Topics,” the. - “Foundation Summary,” Q&A, and scenarios at the end of the chapter.. - “Foundation Summary,” then go to the Q&A and scenarios at the end of the chapter.. - This chapter covers the signaling of the modem and the configurations for a Remote Access Server (RAS) connection. - The use of the rotary group reserved port number connects to the first available port that is in the designated rotary group. - It is important for the successful CCNP or CCDP to be aware of the command mode needed for configuration.. - Logical considerations are configured on the interface of the router. - This command could be replaced with the desired IP address of the interface (refer. - The bandwidth 38 command tells the routing protocol and the router (for statistics) the speed of the line. - This command has no affect on the actual negotiated speed of the modem or the speed at which the DTE talks to the modem.. - Failure of the client to honor CHAP results in the link not being established.. - Configuration of the Attached Modem. - The use of the discovery feature is not recommended because of the overhead on the router.. - 24 Which of the following would trigger a chat script start?. - PPP background—This section examines the underlying technology of the Point-to- Point Protocol (PPP) and its components.. - The actual configuration of the dial- up client is not discussed here. - 2 What is the function of the LCP?. - subsections of the “Foundation Topics” part of this chapter, based on the information that you entered in Table 5-1. - sections and the scenarios at the end of the chapter.. - however, it functions independently of the Layer 3 protocol that is traversing the link.. - The flag field consists of the binary sequence 01111110.. - The default maximum length of the information field is 1500 bytes. - CHAP also repeats a challenge every two minutes for the duration of the connection. - The access server controls the frequency of the challenges. - Step 1 Making a call—The inbound call arrives at the PPP configured interface. - Step 4 Verifying—The called party processes the response packet as follows:. - (d) The authentication name of the calling party is compared to the username/password list in the router or in an. - (f) The hash value received in the response packet is compared to the result of the hash value just generated.. - Don’t worry about the intricacies of the ISDN configuration. - “Foundation Summary” section and then go to the “Q&A” section and scenarios at the end of the chapter.. - The bearer channel—The B channel is the facility that carries the data. - The D Channel—The D channel is used to convey signaling requests to an ISDN switch.. - Layer 1 for ISDN is similar to that of the OSI model. - This connectivity is obviously an important piece of the picture. - A change of switch type requires a reload of the router.. - (0 is used only for PRI and is discussed later.) The TEI provides the physical identifier, and the service access point identifier (SAPI) carries the logical identifier.. - See Example 6-3 in the “ISDN Call Setup” section for a demonstration of the show isdn status command output.. - Another key part of the ISDN BRI Layer 2 is the SPID. - The data link protocol for the B channel, however, can be any of the available protocols because the information can be passed transparently to the remote party. - The last line of the output states that the call is connected to RouterB.. - Example 6-5 details the basic configuration of the remote router.. - The SPID simply informs the switch of the purchased feature set for the particular installation. - Use of this feature combats unauthorized use of the facilities.. - Rotary groups do not make use of the map class featureset. - The backup pathway is used in the absence of the primary, obviously. - The client router is in charge of the quiet timer countdown. - Figure 6-13 depicts the sampling of the wave and the resulting code word.. - The differences lay in the assembly and multiplexing of the channels.. - Example 6-30 shows sample output of the show isdn status command. - The configuration of the PRI service is quite simple
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