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Twelve Top Secret Experiences of Passing CCNP Exam

I have passed the CCNP Exam and I’d like to share my experience! According to the test requirements officially announced by Cisco, SPOTO analyzes each knowledge point of the Cisco test one by one, tries to grasp the key points, find out the important parts of the test that everyone cares about, and discusses with you, hoping to help you pass the test:

Experience of Passing CCNP 640-505 Examination — Selecting Cisco products for remote connection

This part accounts for a relatively large proportion. Most types give certain requirements, such as long-time connection, the wide geographical distribution of branches, support of ISDN connection, etc., and then select the best product from a given product series (700 series, 1600 series, 2500 Series, etc.) to meet the requirements. The description of this is relatively simple in general teaching materials. You’d better read some Cisco product guides in the preparation process to have a more comprehensive understanding of the product characteristics of each series. In this way, you can choose easily.

Experience of Passing CCNP Exam — Connecting all WAN components

It mainly involves the cable connection which is necessary for various types of WAN, such as asynchronous connection, BRI, PRI connection, frame relay connection, etc. If you have contacted RJ45, RJ11, RJ48, CiscoEIA-TIA-232, and other cables in practice, there will be no problem. In addition, you should know that the simplest way to judge whether the router and other network equipment work normally are through various prompts of LED.

Experience of Passing CCNP 640-505 Exam — Configuring the asynchronous connection with modems

Understand the three functional groups connecting the modem cable connector, and be familiar with the corresponding signals. For the reverse Telnet of Modem, it’s best to do an experiment and master the port number rules. For modem configuration in asynchronous connection, attention should be paid to automatic configuration, automatic discovery, automatic configuration, and county magistrate commands for fine-tuning automatic configuration in the modem. The role of chat scripts in asynchronous connection is also a key point.

Experience of Passing CCNP 640-505 Exam — Accessing the central station with Windows95

This part is relatively simple, but can not be ignored. It mainly focuses on how to configure the dial-up connection, LAN protocol supported by Windows95, etc.

Experience of Passing CCNP 640-505 Exam — Configuring PPP and controlling network access with PAP or CHAP

Although the functional components and interface model of PPP are simple, they are the key points of the examination, especially for the LCP options: the difference between PAP and CHAP, process and configuration, setting of client and server in the reverse callback, problems solved, and applicable products in multi-link bundling. The verification and troubleshooting of PPP can not be ignored.

Experience of Passing CCNP 640-505 Exam — Configuring ISDNDDR to strengthen the remote connection

As a widely used technology, ISDN naturally appears as the key point in the examination. The conceptual problems of the ISDN function group, reference point, and protocol layer must be familiar. For BRI, PRI configuration is mainly based on the matching of switch types. For PRI, there is a T1 / E1 controller configuration and an optional receiving analog call configuration. The configuration parameters are possible to be tested, so pay more attention to them. DDR in this part focuses on configuring edge routers, so route re-publishing is also an important knowledge point for unique static and default routes.

Experience of Passing CCNP 640-505 Exam — Optimizing the use of DDR interface

The implementation of DDR interface optimization mainly depends on the use of a dial-up prototype and cyclic group. The premise is to understand the concept of the dial-up interface, which is a logical abstraction rather than a physical interface. Understand the workflow of the dial-up prototype and loop group, and the problems that can be solved, so as to better understand those configuration commands.

Experience of Passing CCNP 640-505 Exam — Configuring a Cisco 700-series Router

Although the 700-series router appears a lot in textbooks, I think it is not the key point in the exam. If you want to master it, focus on its features, such as supporting ISDN and PAD. If you are short of time, you can skip it.

Experience of Passing CCNP 640-505 Exam — Establishing an X.25 connection

As a standard for defining the connection between terminal and datagram switching network, although it has not been found in CCIE Exam, it still accounts for a large proportion of the 505 examinations. It mainly focuses on its protocol stack, X.25 equipment, addressing standard, and often uses SVC (frame relay often uses PVC). For configuration, it is mainly the x.25map command, and the significance of the broadcast parameter must be paid attention to.

Experience of Passing CCNP 640-505 Exam — Establishing a dedicated frame relay connection and controlling the communication flow with the flow diagram

As a connection-oriented data link technology, frame relay has many proprietary terms, such as DLCI and LMI. The configuration is the best corresponds to X.25. For static mapping and dynamic mapping of addresses, there are several corresponding show commands. The sub-interface setting to solve the accessibility problem of routing update, the implementation of several traffic shaping technologies applied to frame relay, and the problems that can be solved.

Experience of Passing CCNP 640-505 Exam — Establishing backup of special line connection

The dial-up backup in the backup of a special line connection is relatively simple. The backup interface is the same as the dial-up interface mentioned above, which is also a difficult point, at least for me. We must understand the problems solved by the dial-up prototype, and take a good look at the loaded backup made by different routing protocols.

Experience of Passing CCNP 640-505 Exam — Optimizing traffic on WAN connection

Generally speaking, there are two methods to optimize traffic: queue technology and compression technology. Queue technology mainly includes FIFO, WFQ, Priority, and custom queues. It is necessary to know when to use queue technology for optimization, the applicable conditions of various queue technologies, how to configure them, and the queues enabled by default on some interfaces. Data compression mainly includes link compression, netload data compression, TCP packet header compression, Microsoft’s Point-to-Point Compression (MPPC), and technologies applicable to various compression methods. Note that only STAC compression is used on the CiscoHDLC protocol.

Use NAT or PAT as an extended IP address

Understand the functions that can be realized by using NAT: converting internal local addresses, multiplexing internal global addresses, TCP load balancing, and handling network address overlap. You should have a general understanding of how to realize the above functions and how to configure them. Have some knowledge of NAT verification and debugging commands such as show, debug, etc. Pat, as a subset of NAT, is mentioned in the course because of the existence of 700, which could be ignored. Provide access control with AAA in an extended network.

Although AAA is the theme of this part, you should have some understanding of Cisco’s security solutions. Among them, memorize the functional components of CiscoSecure. For AAA, you should first understand the meaning of the three As and master AAA Authentication commands. Of course, you don’t need to memorize them. It’s a choice question in the exam. Just look at the virtual prototype mentioned in the textbook.

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