CCNA EXP MOD_IV_CHAPTER_2_EB

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  • 1. Protocolo Punto a Punto (PPP) Accediendo la WAN – Capítulo 2ITE I Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  • 2. Objetivos Describir los conceptos fundamentales de la comunicación serial punto a punto. Describir los conceptos claves acerca del PPP. Configurar la encapsulación PPP. Explicar y configurar la autenticación PAP y CHAP.ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  • 3. 2.1 Enlaces seriales punto a punto Accediendo la WAN – Capítulo 2ITE I Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  • 4. ¿Cómo funciona la comunicación serial? Comunicación Serial y ParalelaITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  • 5. ¿Cómo funciona la comunicación serial? Sesgo de reloj de la Comunicación ParalelaITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  • 6. Proceso de la comunicación serialITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  • 7. Conector de 9 pins (RS 232)ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  • 8. Multiplexación por división de tiempo (TDM)ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  • 9. Ejemplos de TDMITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  • 10. Punto de DemarcaciónITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  • 11. Conexiones Seriales DCE / DTEITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11
  • 12. Protocolos de encapsulación WANITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  • 13. Formato de la trama estándar y cHDLCITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  • 14. Tipos de tramas HDLCITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  • 15. Configuración del Encapsulamiento HDLC El HDLC de Cisco es un protocolo de punto a punto que puede utilizarse en líneas alquiladas entre dos dispositivos Cisco.ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 15
  • 16. Diagnóstico de fallas de una interface serial Se pueden identificar cinco estados problemáticos de la línea de estado de la interfaz en la salida de show interfaces serial: – Serial x is down, line protocol is down – Serial x is up, line protocol is down – Serial x is up, line protocol is up (looped) – Serial x is up, line protocol is down (disabled) – Serial x is administratively down, line protocol is downITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 16
  • 17. 2.2 Conceptos del Protocolo Punto a Punto (PPP) Accediendo la WAN – Capítulo 2ITE I Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  • 18. Point to Point Protocol (PPP)ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  • 19. Arquitecturas de capa PPP – Capa físicaITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  • 20. Arquitecturas de capa PPP – Capa LCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 20
  • 21. Arquitecturas de capa PPP – Capa NCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 21
  • 22. Campos de una trama PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 22
  • 23. Establecimiento de una sesión PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 23
  • 24. Establecimiento del enlaceITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 24
  • 25. Negociación del enlaceITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 25
  • 26. Códigos de LCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 26
  • 27. Opciones LCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 27
  • 28. Opción de configuración PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 28
  • 29. Campos de Opciones LCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 29
  • 30. Proceso NCPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 30
  • 31. 2.3 Configuración de PPP Accediendo la WAN – Capítulo 2ITE I Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 31
  • 32. Comandos de configuración de opciones PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 32
  • 33. Verificación de PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 33
  • 34. Comandos de configuración PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 34
  • 35. Depuración de PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 35
  • 36. Protocolos de autenticación PPPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 36
  • 37. Autenticación PAPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 37
  • 38. Autenticación CHAPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 38
  • 39. Ejemplo de autenticación CHAPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 39
  • 40. El comando “ppp authentication”ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 40
  • 41. Configuración de autenticación PAPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 41
  • 42. Configuración de autenticación CHAPITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 42
  • 43. Resumen Las comunicaciones seriales y paralelas TDM / STDM / Punto de Demarcación / DTE – DCE Protocolos de encapsulación WAN La trama HDLC y Chdlc / Tipos de tramas HDLC (información, supervisión y no numerada) Diagnósticos de fallas en los enlaces seriales: –Serial x is down, line protocol is down –Serial x is up, line protocol is down –Serial x is up, line protocol is up (looped) –Serial x is up, line protocol is down (disabled) –Serial x is administratively down, line protocol is downITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 43
  • 44. Resumen Arquitectura PPP – LCP – NCP La trama PPP Fases de la conexión PPP – Establecimiento / Negociación del enlace – Autenticación / Opciones – Proceso NCP Configuración: – Autenticación – Opciones – Verificación – Depuración – Resolución de problemasITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 44
  • 45. ITE 1 Chapter 6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 45