Conteúdo da nova Certificação CCNA 640-802

Olá pessoal,
Segue abaixo a transcrição do trecho retirado do site oficial da Cisco que apresenta o conteúdo que abrange a nova Certificação 640-802, a CCNA.
Link: http://www.cisco.com/web/learning/le3/current_exams/640-802.html

Exam Description:

(…)This exam tests a candidate’s knowledge and skills required to install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; extending switched networks with VLANs; determining IP routes; managing IP traffic with access lists; establishing point-to-point connections; and establishing Frame Relay connections.

Exam Topics:

The following topics are general guidelines for the content likely to be included on the Cisco Certified Network Associate exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Describe how a network works

  • Describe the purpose and functions of various network devices
  • Select the components required to meet a network specification
  • Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
  • Describe common networked applications including web applications
  • Describe the purpose and basic operation of the protocols in the OSI and TCP models
  • Describe the impact of applications (Voice Over IP and Video Over IP) on a network
  • Interpret network diagrams
  • Determine the path between two hosts across a network
  • Describe the components required for network and Internet communications
  • Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach
  • Differentiate between LAN/WAN operation and features

Configure, verify and troubleshoot a switch with VLANs and interswitch communications

  • Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts
  • Explain the technology and media access control method for Ethernet networks
  • Explain network segmentation and basic traffic management concepts
  • Explain basic switching concepts and the operation of Cisco switches
  • Perform and verify initial switch configuration tasks including remote access management
  • Verify network status and switch operation using basic utilities (including: ping, traceroute, telnet, SSH, arp, ipconfig), SHOW & DEBUG commands
  • Identify, prescribe, and resolve common switched network media issues, configuration issues, auto negotiation, and switch hardware failures
  • Describe enhanced switching technologies (including: VTP, RSTP, VLAN, PVSTP, 802.1q)
  • Describe how VLANs create logically separate networks and the need for routing between them
  • Configure, verify, and troubleshoot VLANs
  • Configure, verify, and troubleshoot trunking on Cisco switches
  • Configure, verify, and troubleshoot interVLAN routing
  • Configure, verify, and troubleshoot VTP
  • Configure, verify, and troubleshoot RSTP operation
  • Interpret the output of various show and debug commands to verify the operational status of a Cisco switched network.
  • Implement basic switch security (including: port security, trunk access, management vlan other than vlan1, etc.)

Implement an IP addressing scheme and IP Services to meet network requirements in a medium-size Enterprise branch office network.

  • Describe the operation and benefits of using private and public IP addressing
  • Explain the operation and benefits of using DHCP and DNS
  • Configure, verify and troubleshoot DHCP and DNS operation on a router.(including: CLI/SDM)
  • Implement static and dynamic addressing services for hosts in a LAN environment
  • Calculate and apply an addressing scheme including VLSM IP addressing design to a network
  • Determine the appropriate classless addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment
  • Describe the technological requirements for running IPv6 in conjunction with IPv4 (including: protocols, dual stack, tunneling, etc).
  • Describe IPv6 addresses
  • Identify and correct common problems associated with IP addressing and host configurations

Configure, verify, and troubleshoot basic router operation and routing on Cisco devices

  • Describe basic routing concepts (including: packet forwarding, router lookup process)
  • Describe the operation of Cisco routers (including: router bootup process, POST, router components)
  • Select the appropriate media, cables, ports, and connectors to connect routers to other network devices and hosts
  • Configure, verify, and troubleshoot RIPv2
  • Access and utilize the router to set basic parameters.(including: CLI/SDM)
  • Connect, configure, and verify operation status of a device interface
  • Verify device configuration and network connectivity using ping, traceroute, telnet, SSH or other utilities
  • Perform and verify routing configuration tasks for a static or default route given specific routing requirements
  • Manage IOS configuration files. (including: save, edit, upgrade, restore)
  • Manage Cisco IOS.
  • Compare and contrast methods of routing and routing protocols
  • Configure, verify, and troubleshoot OSPF
  • Configure, verify, and troubleshoot EIGRP
  • Verify network connectivity (including: using ping, traceroute, and telnet or SSH)
  • Troubleshoot routing issues
  • Verify router hardware and software operation using SHOW & DEBUG commands.
  • Implement basic router security

Explain and select the appropriate administrative tasks required for a WLAN

  • Describe standards associated with wireless media (including: IEEE WI-FI Alliance, ITU/FCC)
  • Identify and describe the purpose of the components in a small wireless network. (Including: SSID, BSS, ESS)
  • Identify the basic parameters to configure on a wireless network to ensure that devices connect to the correct access point
  • Compare and contrast wireless security features and capabilities of WPA security (including: open, WEP, WPA-1/2)
  • Identify common issues with implementing wireless networks. (Including: Interface, missconfiguration)

Identify security threats to a network and describe general methods to mitigate those threats

  • Describe today’s increasing network security threats and explain the need to implement a comprehensive security policy to mitigate the threats
  • Explain general methods to mitigate common security threats to network devices, hosts, and applications
  • Describe the functions of common security appliances and applications
  • Describe security recommended practices including initial steps to secure network devices

Implement, verify, and troubleshoot NAT and ACLs in a medium-size Enterprise branch office network.

  • Describe the purpose and types of ACLs
  • Configure and apply ACLs based on network filtering requirements.(including: CLI/SDM)
  • Configure and apply an ACLs to limit telnet and SSH access to the router using (including: SDM/CLI)
  • Verify and monitor ACLs in a network environment
  • Troubleshoot ACL issues
  • Explain the basic operation of NAT
  • Configure NAT for given network requirements using (including: CLI/SDM)
  • Troubleshoot NAT issues

Implement and verify WAN links

  • Describe different methods for connecting to a WAN
  • Configure and verify a basic WAN serial connection
  • Configure and verify Frame Relay on Cisco routers
  • Troubleshoot WAN implementation issues
  • Describe VPN technology (including: importance, benefits, role, impact, components)
  • Configure and verify a PPP connection between Cisco routers
Um abraço,
E sucesso a todos nós.

Frame-Relay Lab.

Olá Pessoal,

Iniciando nossa proposta de estudos estou postando um laborátório interessante de Frame-Relay utilizando a topologia de matriz e filiais, com a nuvem Frame-relay em nosso controle.

Abaixo segue as instruções:

Objetivo:

Aprimorar os conhecimentos nas diversas áreas de configuração, implementação, solução de problemas manipulação dos comandos debug e show nos Routers e Switches. Este laboratório deverá conter configuração para as diversas áreas de estudo apresentadas abaixo:
O endereçamento IP será feito com base na rede 172.16.0.0/24 (classe B -> C). Cada filial necessita de 120 endereços para hosts, e na matriz 600. Para os links PPP uma sub-rede /30. Já no multi-point utilizar qualquer outro, respeitando o limite de classe.
Para a configuração com NAT utilize a classe 200.234.1.0/28.

A topologia utilizada é a seguinte:

Topologia Lab Frame-relay
Topologia Lab Frame-relay

Tabela IP:
Como temos a sub-rede disponível 172.16.0.0 / 16 ou 255.255.0.0 (máscara padrão) vamos alterar esta máscara para /24 ou 255.255.255.0. Ao fazer isto, sabemos que para cada sub-rede temos 254 ips válidos, ou 2^8(à potência de) = 256 – 2(nº de rede e broadcast) = 254 IPS validos. Como precisamos de 600, 120, 120 e 120, além dos links de wan ppp.

SUBNET MASK 1o IP valido ultimo IP valido LOCAL NECESSIDADE DE IPS
172.16.0.0/22 255.255.252.0 172.16.0.1 172.16.3.254 matriz 600, usado 1022
172.16.4.0/23 255.255.255.128 172.16.4.1 172.16.4.126 NH 120, usado 126
172.16.4.128/23 255.255.255.128 172.16.4.129 172.16.4.254 CB 120, usado 126
172.16.5.0/23 255.255.255.128 172.16.5.1 172.16.5.126 CX 120, usado 126
172.16.5.128/30 255.255.255.252 172.16.5.129 172.16.5.130 Rmat-Rsw 2
172.16.5.132/30 255.255.255.252 172.16.5.133 172.16.5.134 Rsw-Rnh 2
172.16.5.136/30 255.255.255.252 172.16.5.137 172.16.5.138 Rsw-RCB 2
172.16.5.140/30 255.255.255.252 172.16.5.141 172.16.5.142 Rsw-RCX 2

Premissas:

–    Alternar entre protocolos de roteamento: IGRP área 5, OSPF área 5, RIPv2.
–    VLANS + VTP nos switches e comunicação inter-filiais via protocolo de roteamento. Sendo a matriz o Server
–    DHCP nas filiais, utilizando o ip helper-address da matriz.
–    CDP
–    SNMP
–    PPP c/ autenticação CHAP
–    Redistribute a rota padrão (default gateway) da matriz, via prot. de roteamento.
–    Clock rate 64000
–    STP nos switches e ver como aprendem a RAIZ.
–    ACL’s permitindo certos tráfegos
–    NAT na matriz 1 ip por filial sairá pelo ISP.
–    Utilizar o Multi-point no final.

Em todos as variações de Labs, monitorar os seguintes itens:

–    Spanning-Tree Protocol / ver prioridades da raiz e os aspectos importantes / alterações na rede, monitorar.
–    Protocolo de Roteamento / alterações na rede / redistribute
–    Colocar um host de cada lado da rede e pegar DHCP
–    Usar e abusar dos comandos show e debug.

É isso aí pessoal. Rumo ao CCNA.

Abraços,

Maurício.

Bem-vindo ao Cisco CCNA || Guia de Estudo

Olá Pessoal,

Sejam bem-vindos ao novo website que em breve será reconhecido como referência para estudos da nova prova CCNA (640-802).

O objetivo do autor é de compartilhar todo o material de estudo utilizado para se preparar para a prova, apresentar um roteiro de estudos e estar apto a responder todas e quaisquer dúvidas.

O autor possui experiência de 2 anos no mundo de redes de computadores atuando na área de networking com Linux, mas não fugindo as configurações de equipamentos Cisco/Linksys.

Um abraço pessoal,
Maurício.