CCNA 3 Cisco Scaling Networks Course

CCNA 3 Cisco Scaling Networks Course

Welcome to the  CCNA Routing and Switching: Cisco Scaling Networks course. At the end of this CCNA 3 course, you can perform the configuration and troubleshooting of routers and switches, and solve common problems with OSPF, EIGRP, STP and VTP in IPv4 and IPv6 networks. It will also develop the skills and obtain the necessary knowledge to implement DHCP and DNS operations in a network.

CCNA 3 Network Scalability Cisco Course Content

This course focuses on the architecture, components and operations of routers and switches in larger and more complex networks. You will learn to configure routers and switches to have advanced functionality.

In this course, you will learn to do the following:

  • Configure and carry out troubleshooting of DHCP and DNS operations for IPv4 and IPv6.
  • Describe the operations and benefits of the tree expansion protocol (STP).
  • Carry out the configuration and troubleshooting of STP operations.
  • Describe the operations and benefits of link aggregation and the Cisco VLAN Trunk Link Protocol (VTP).
  • Carry out the configuration and troubleshooting of VTP, STP and RSTP.
  • Carry out the configuration and troubleshooting of basic router operations in a complex routed network for IPv4 and IPv6.
  • Configure and perform troubleshooting of advanced router operations and implement RIP,
  • OSPF and EIGRP routing protocols for IPv4 and IPv6.
  • Manage the configuration and licensing files of the Cisco IOS® software.

CHAPTER 1: INTRODUCTION TO NETWORK SCALING - CCNA 3

As a company grows, its network requirements also increase. Companies rely on network infrastructure to provide essential services. Network interruptions can cause profit and customer losses. Network designers must design and build a business network that is scalable and highly available.
In this chapter, strategies are presented that can be used to systematically design a high-functionality network , such as the hierarchical network design model and Cisco enterprise architecture , and appropriate device selections. The objectives of the network design are to limit the number of devices that are affected by the failure of a single network device, provide a plan and a growth path and create a reliable network.
The Chapter will covered the following:


CHAPTER 2: LAN REDUNDANCY - CCNA 3

Network redundancy is key to maintaining network reliability. Several physical links between devices provide redundant routes. In this way, the network can continue to operate if a single link or port failed. Redundant links can also share traffic load and increase capacity.
Several routes must be managed so that no loops occur in layer 2. The best routes are chosen, and an alternative route is available immediately in the event that a main route fails. Expansion tree protocols are used to manage layer 2 redundancy.
Redundant devices, such as routers or multilayer switches, provide the ability for a client to use an alternate default gateway in case the primary default gateway fails. It is possible that a client now has several routes to more than one possible default gateway. The protocols first - hop redundancy are used to manage how you assign a default and allow a customer to use an alternative default gateway if the primary gateway fails.
In this chapter, the protocols used to manage these forms of redundancy are analyzed . In addition, some of the possible redundancy problems and their symptoms are covered.
The chapter will focus on following topics:


CHAPTER 3: LINK AGGREGATION - CCNA 3

Link aggregation is the ability to create a single logical link through several physical links between two devices. This allows the load to be shared between physical links, instead of having STP block one or more links. EtherChannel is a form of link aggregation that is used in switched networks.
In this chapter, EtherChannel and the methods used to create an EtherChannel are described . An EtherChannel can be configured manually or can be negotiated using the Cisco aggregation protocol (PAgP), exclusive to Cisco, or the link aggregation control protocol (LACP), defined in IEEE 802.3ad. The configuration, verification and troubleshooting of EtherChannel are analyzed.
The topics covered:


CHAPTER 4: WIRELESS LAN - CCNA 3

Wireless networks can provide mobility for customers, the ability to connect anytime, anywhere, as well as the ability to move and stay connected.
A wireless LAN (WLAN) is a classification of wireless network that is commonly used in home, office and campus environments. Although it uses radio frequencies instead of cables, it is generally implemented in a switched network environment, and its frame format is similar to Ethernet.
This chapter covers technology, components, security, planning, implementation and troubleshooting of WLAN . The types of attacks to which wireless networks are particularly vulnerable are analyzed.
Following topics are include in this chapter:


CHAPTER 5: ADJUSTING AND SOLVING SINGLE AREA OSPF PROBLEMS - CCNA 3

OSPF is a popular link state routing protocol that can be adjusted in many ways. Some of the most common tuning methods include the manipulation of the process of choice of the designated router / designated backup router (DR / BDR), the propagation of predetermined routes, the adjustment of the OSPFv2 and OSPFv3 interfaces and the authentication enable.
This chapter on OSPF describes the characteristics of these settings, the configuration mode commands that are used to implement these features for IPv4 and IPv6, and the components and commands that are used to solve OSPFv2 and OSPFv3 problems .
The topics covered:


CHAPTER 6: MULTI-AREA OSPF - CCNA 3

Multi-area OSPF is used to divide large OSPF networks. If there were too many routers in an area, the load on the CPU would increase and a very large link state database would be created. In this chapter, instructions are provided to divide a single large area into several areas effectively. Area 0 that is used in OSPF single area is known as “backbone area”.
The analysis focuses on the LSAs that are exchanged between areas. In addition, activities are provided to configure OSPFv2 and OSPFv3. The chapter concludes with the show commands that are used to verify OSPF configurations.
The topics covered:


CHAPTER 7: EIGRP - CCNA 3

The Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance vector routing protocol developed by Cisco Systems. As the name suggests, EIGRP is an improvement to another Cisco routing protocol: the internal gateway routing protocol (IGRP). IGRP is a distance vector routing protocol with previous class, which became obsolete as of IOS 12.3.
EIGRP is a distance vector routing protocol that includes characteristics of the link state routing protocols. EIGRP is suitable for numerous different topologies and media. In a well-designed network, EIGRP can scale to include several topologies and can provide extremely fast convergence times with minimal network traffic.
In this chapter, the EIGRP protocol is presented and basic configuration commands are provided to enable it on a router with Cisco IOS. The operation of the routing protocol is also explored and more details are provided on how EIGRP determines the best route.


CHAPTER 8: ADVANCED SETTINGS AND TROUBLESHOOTING OF EIGRP - CCNA 3

EIGRP is a versatile routing protocol that can be adjusted in many ways. Two of the most important adjustment capabilities are to summarize routes and to implement load balancing . Other adjustment capabilities are the propagation of a predetermined route, the setting of timers and the implementation of authentication between EIGRP neighbors to increase security.
In this chapter, these additional tuning features and configuration mode commands are discussed to implement them for IPv4 and IPv6.

CHAPTER 9: IOS IMAGES AND LICENSES - CCNA 3

Cisco IOS (initially Internetwork operating system) is software that is used in most Cisco routers and switches. IOS is a package of routing, switching, security and other internetworking technologies integrated in a single multitasking operating system.
The Cisco IOS portfolio supports a wide range of technologies and features. Clients choose an IOS based on a group of protocols and features supported by a particular image. Understanding the Cisco IOS feature set portfolio is useful in selecting the right IOS to meet the needs of an organization.
Cisco made significant changes to the IOS software packages and licenses by making the transition from IOS 12.4 to 15.0. In this chapter, nomenclature conventions and IOS packages 12.4 and 15 are explained . Starting with IOS 15 , Cisco also implemented a new package format and licensing activation process for IOS. This chapter discusses the process of obtaining, installing, and managing licenses for Cisco 15 IOS software.
Note : the version of IOS that follows 12.4 is 15.0. There are no versions 13 or 14 of the IOS software.

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