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(4,5) enlaces wan traduccion

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(4,5) enlaces wan traduccion

  1. 1. Capítulo 4 Estableciendo Conexiones Seriales Punto a PuntoGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 1 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-1
  2. 2. Objetivos Al completar este capitulo, Ud. Sera capaz de realizar las siguientes tareas: • Configure HDLC and PPP protocols on a serial WAN connection • Configure PAP and CHAP authentication on a PPP connection • Verify proper point-to-point HDLC and PPP configurationGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 2 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-2
  3. 3. Resumen WAN Proveedor de Servicios • WANs connect sites • Connection requirements vary depending on user requirements and costGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 3 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-3
  4. 4. Tipos de Conexió n WAN: Capa 1 Serial Sincrono Línea Dedicada Asynchronous serial, ISDN Layer 1 Conmutacio Telephone n de Company Circuitos Serial Sincrono Conmutacion Service Provider de PaquetesGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 4 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-4
  5. 5. Interfacing WAN Service Providers WAN service provider toll network S S S S CO Switch Local Loop S S S Demarcation Trunks and switches Customer Premises Equipment Point-to-point or circuit-switched connection Provider assigns connection parameters to subscriberGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 5 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-5
  6. 6. Conexiones Seriales Point-to-Point Dispositvo Conector Lado Router usuario final DTECSU/DSU DCE Proveedor Servicio EIA/TIA- EIA/TIA- V.3 X.21 EIA-530 232 449 5 Conectores lado Red al CSU/DSUGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 6 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-6
  7. 7. Typical WAN Encapsulation Protocols: Layer 2 HDLC, PPP, SLIP Leased Line X.25, Frame Relay, ATM Packet-switched Service Provider PPP, SLIP, HDLC Circuit-switched Telephone CompanyGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 7 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-7
  8. 8. HDLC Frame Format Cisco HDLC Flag Address Control Proprietary Data FCS Flag • El protocolo HDLC de Cisco tiene el campo proprietary para soportar ambientes multiprotocolo HDLC Flag Address Control Data FCS Flagtocolo HDLC standar soporta un solo single protocol environGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 8 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-8
  9. 9. HDLC Command Router(config-if)#encapsulation hdlc • Habilita la encapsulacion HDLC • HDLC es la encapsulacion por defecto en una Interface serial sincronaGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 9 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-9
  10. 10. Una vision de PPP Multiple protocol encapsulations using NCPs in PPP TCP/IP PPP Encapsulation Novell IPX AppleTalk Link setup and control using LCP in PPP • PPP can carry packets from several protocol suites using Network Control Programs • PPP controls the setup of several link options using LCPGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 10 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-10
  11. 11. Elementos PPP IP IPX Capa 3 Protocolos IPCP IPXCP Many Others Capa de Red PPP Network Control Protocol Capa de Authentication, otras opciones Enlace Link Control Protocol Synchronous or Asynchronous Capa Physical Media Fisica PPP—A data link with network-layer servicesGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 11 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-11
  12. 12. Opciones de Configuracion PPP LCP Caracteristica Como opera Protocolo Requiere un password PAP Authentication Perform Challenge Handshake CHAP Comprime data at source; Stacker or Compression reproduce data at Predictor destination Error Monitor data dropped on link Quality Detection Avoid frame looping Magic Number Multilink Load balancing across Multilink multiple links Protocol (MP)GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 12 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-12
  13. 13. PPP Authentication Overview Dialup or Circuit-Switched Network PPP Session Establishment 1 Link Establishment Phase 2 Optional Authentication Phase 3 Network-Layer Protocol Phase Dos protocolos de autenticacion PPP: PAP y CHAPGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 13 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-13
  14. 14. Seleccionando un Protocolo de Autenticacion PPP Router Remoto PAP Router Central (SantaCruz) 2-Way Handshake (HQ) “santacruz, boardwalk” Acepta/Rechaza Hostname: santacruz username santacruz Password: boardwalk password boardwalk • Passwords sent in clear text • Peer in control of attemptsGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 14 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-14
  15. 15. Seleccionando un Protocolo de Autenticacion PPP CHAP Router Remoto Router Central (SantaCruz) 3-Way Handshake (HQ) Challenge Response Hostname: santacruz Accept/Reject username santacruz Password: boardwalk password boardwalk Use “secret” known only to authenticator and peerGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 15 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-15
  16. 16. Configuring PPP and Authentication Overview Verify who you are. Service Provider Authenticating Router Router to Be (The router that received the Authenticated call.) (The router that initiated theEnabling PPP Enabling PPP call.)   ppp encapsulationEnabling PPP Authentication Enabling PPP Authentication   ppp encapsulation  hostname  hostname  username /  username / password password 16GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS ppp authentication www.cisco.com © 2000, Cisco Systems, Inc. ICND v1.0a—1-16
  17. 17. Configurando PPP Router(config-if)#encapsulation ppp • Habilita la encapsulacion PPPGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 17 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-17
  18. 18. Configurando Autenticacion PPP Router(config)#hostname name • Assigns a host name to your router Router(config)#username name password password • Identifica el usuario y el password para autentificar el router.GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 18 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-18
  19. 19. Configurando Autenticacion PPP (cont) Router(config-if)#ppp authentication {chap | chap pap | pap chap | pap} • Habilita autenticacion PAP y/o CHAPGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 19 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-19
  20. 20. Ejemplo de Configuracion CHAP Left Right PSTN/ISDN router router hostname left hostname left hostname right username right password sameone username right password sameone username left password sameone ! ! ! int serial 0 int serial 0 int serial 0 ip address 10.0.1.1 255.255.255.0 ip address 10.0.1.1 255.255.255.0 ip address 10.0.1.2 255.255.255.0 encapsulation ppp encapsulation ppp encapsulation ppp ppp authentication CHAP ppp authentication CHAP ppp authentication CHAPGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 20 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-20
  21. 21. Verificando configuracion de Encapsulacion HDLC y PPP Router#show interface s0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.140.1.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation PPP, loopback not set, keepalive set (10 sec) LCP Open Open: IPCP, CDPCP Last input 00:00:05, output 00:00:05, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 38021 packets input, 5656110 bytes, 0 no buffer Received 23488 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 38097 packets output, 2135697 bytes, 0 underruns 0 output errors, 0 collisions, 6045 interface resets 0 output buffer failures, 0 output buffers swapped out 482 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=upGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 21 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-21
  22. 22. Verificando la Autenticacion PPP con el comando debug ppp authentication Left Service Right router Provider router 4d20h: %LINK-3-UPDOWN: Interface Serial0, changed state to up 4d20h: %LINK-3-UPDOWN: Interface Serial0, changed state to up 4d20h: Se0 PPP: Treating connection as a dedicated line 4d20h: Se0 PPP: Treating connection as a dedicated line 4d20h: Se0 PPP: Phase is AUTHENTICATING, by both 4d20h: Se0 PPP: Phase is AUTHENTICATING, by both 4d20h: Se0 CHAP: O CHALLENGE id 2 len 28 from ”left" 4d20h: Se0 CHAP: O CHALLENGE id 2 len 28 from ”left" 4d20h: Se0 CHAP: I CHALLENGE id 3 len 28 from ”right" 4d20h: Se0 CHAP: I CHALLENGE id 3 len 28 from ”right" 4d20h: Se0 CHAP: O RESPONSE id 3 len 28 from ”left" 4d20h: Se0 CHAP: O RESPONSE id 3 len 28 from ”left" 4d20h: Se0 CHAP: I RESPONSE id 2 len 28 from ”right" 4d20h: Se0 CHAP: I RESPONSE id 2 len 28 from ”right" 4d20h: Se0 CHAP: O SUCCESS id 2 len 4 4d20h: Se0 CHAP: O SUCCESS id 2 len 4 4d20h: Se0 CHAP: I SUCCESS id 3 len 4 4d20h: Se0 CHAP: I SUCCESS id 3 len 4 4d20h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, 4d20h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up changed state to up debug ppp authentication successful CHAP outputGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 22 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-22
  23. 23. Visual Objective wg_pc_a 10.2.2.12 pod ro’s s0 A 10.140.1.2 e0/1 e0/2 e0 wg_ro_ B 10.140.2.2 10.2.2.3 a C 10.140.3.2 s0 wg_sw_a 10.140.1.2 D 10.140.4.2 10.2.2.11 E 10.140.5.2 PPP with CHAP F 10.140.6.2 G 10.140.7.2 wg_pc_l H 10.140.8.2 10.13.13.12 I 10.140.9.2 wg_ro_l PPP with CHAP J 10.140.10.2 e0/1 e0/2 e0 s0 LL K 10.140.11.2 10.13.13.3 10.140.12.2 L 10.140.12.2 wg_sw_l 10.13.13.11 s1/0 - s2/3 ... 10.140.1.1 … 10.140.12.1 fa0/24 fa0/23 fa0/0 core_ server core_sw_a core_ro 10.1.1.1 10.1.1.2 10.1.1.3GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 23 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-23
  24. 24. Capítulo 5 Estableciendo Conexiones Frame RelayGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 24 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-24
  25. 25. Objectivos Al completar este capitulo, Ud. Sera capaz de realizar las siguientes tareas: • Determinar como opera Frame Relay • Configurar Frame Relay • Configurar Subinterfaces Frame Relay • Verificar operaciones Frame RelayGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 25 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-25
  26. 26. Frame Relay Overview DCE o Frame Relay Switch CSU/DSU Frame Relay trabaja aqui. • Virtual circuits make connections • Servicio Orientado a la ConexionGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 26 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-26
  27. 27. Frame Relay Stack Modelo de Referencia Frame Relay OSI Aplicacion Presentacio n Sesion Transporte Network IP/IPX/AppleTalk, etc. Capa de Enlace Frame Relay EIA/TIA-232, Capa Fisica EIA/TIA-449, V.35, X.21, EIA/TIA-530GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 27 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-27
  28. 28. Terminologia Frame Relay PVC DLCI: 100 DLCI: 200 LMI 100=Activ e 400=Activ e DLCI: 400 Local Access Local Loop=64 Access kbps Loop=T1 PVC Local Access Loop=64 kbps DLCI: 500GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 28 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-28
  29. 29. Frame Relay Address Mapping DLCI: 500 PVC 10.1.1. 1 CSU/DSU Inverse ARP or Frame Relay map Frame IP Relay DLCI (500) (10.1.1.1) • Get locally significant DLCIs from provider • Map your network addresses to DLCIsGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 29 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-29
  30. 30. Señ alizacion Frame Relay DLCI: 500 PVC 10.1.1. 1 CSU/DSU LMI 500=Active 400=Inactive DLCI: 400 x PVC Keepalive Cisco soporta 3 estandars LMI: • Cisco • ANSI T1.617 Annex D • ITU-T Q.933 Annex AGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 30 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-30
  31. 31. Frame Relay Inverse ARP and LMI Operation 1 Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 31 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-31
  32. 32. Frame Relay Inverse ARP and LMI Operation 1 Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 2 Pregunta Status Pregunta Status 2GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 32 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-32
  33. 33. Frame Relay Inverse ARP and LMI Operation 1 Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 2 Pregunta Status Pregunta Status 2 Local DLCI 100=Active Local DLCI 400=Active 3 3 4GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 33 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-33
  34. 34. Frame Relay Inverse ARP and LMI Operation 1 Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 2 Status Inquiry Status Inquiry 2 Local DLCI 100=Active Local DLCI 400=Active 3 3 4 Hello, I am 172.168.5.5. 4GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 34 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-34
  35. 35. Frame Relay Inverse ARP and LMI Operation (cont.) Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 Frame Relay Map 5 172.168.5.5 DLCI 400 Active Hello, I am 172.168.5.7. 4 Frame Relay Map 5 172.168.5.7 DLCI 100 ActiveGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 35 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-35
  36. 36. Frame Relay Inverse ARP and LMI Operation (cont.) Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 Frame Relay Map 5 172.168.5.5 DLCI 400 Active Hello, I am 172.168.5.7. 4 Frame Relay Map 5 172.168.5.7 DLCI 100 Active 6 Hello, I am 172.168.5.5.GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 36 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-36
  37. 37. Frame Relay Inverse ARP and LMI Operation (cont.) Frame Relay DLCI=100 DLCI=400 172.168.5.5 172.168.5.7 Frame Relay Map 5 172.168.5.5 DLCI 400 Active Hello, I am 172.168.5.7. 4 Frame Relay Map 5 172.168.5.7 DLCI 100 Active 6 Hello, I am 172.168.5.5. Keepalives Keepalives 7 7GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 37 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-37
  38. 38. Configuracion Basica Frame Relay Rel. 11.2 Router Rel. 10.3 Router HQ Branch interface Serial1 interface Serial1 ip address 10.16.0.1 255.255.255.0 ip address 10.16.0.2 255.255.255.0 encapsulation frame-relay encapsulation frame-relay bandwidth 64 bandwidth 64 frame-relay lmi-type ansiGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 38 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-38
  39. 39. Configuracion Basica Frame Relay (cont) Rel. 11.2 Router Rel. 10.3 Router HQ Branch interface Serial1 interface Serial1 ip address 10.16.0.1 255.255.255.0 ip address 10.16.0.2 255.255.255.0 encapsulation frame-relay encapsulation frame-relay bandwidth 64 bandwidth 64 frame-relay lmi-type ansi Inverse ARP • Enabled by default • Does not appear in configuration outputGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 39 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-39
  40. 40. Configuring a Static Frame Relay Map DLCI=110 IP address=10.16.0.1/24 p1r1 HQ Branch DLCI=100 IP address=10.16.0.2/24 interface Serial1 ip address 10.16.0.1 255.255.255.0 encapsulation frame-relay bandwidth 64 frame-relay map ip 10.16.0.2 110 broadcastGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 40 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-40
  41. 41. Verificando la operatividad Frame Relay Router#show interface s0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.140.1.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec) LMI enq sent 19, LMI stat recvd 20, LMI upd recvd 0, DTE LMI up LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 LMI DLCI 1023 LMI type is CISCO frame relay DTE FR SVC disabled, LAPF state down Broadcast queue 0/64, broadcasts sent/dropped 8/0, interface broadcasts 5 Last input 00:00:02, output 00:00:02, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops <Output omitted> • Muestra el estado del protocolo, DLCI, e informacion LMIGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 41 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-41
  42. 42. Verificando la operatividad Frame Relay (cont)ame-relay lmi for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCObered info 0 Invalid Prot Disc 0 Call Ref 0 Invalid Msg Type 0s Message 0 Invalid Lock Shift 0mation ID 0 Invalid Report IE Len 0t Request 0 Invalid Keep IE Len 0q. Sent 113100 Num Status msgs Rcvd 113100atus Rcvd 0 Num Status Timeouts 0 • Muestra infromacion LMI GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 42 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-42
  43. 43. Verificando la operatividad Frame Relay (cont) Router#show frame-relay pvc 100 PVC Statistics for interface Serial0 (Frame Relay DTE) DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 28 output pkts 10 in bytes 8398 out bytes 1198 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 10 out bcast bytes 1198 pvc create time 00:03:46, last time pvc status changed 00:03:47 • Muestra estadistica del trafico PVCGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 43 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-43
  44. 44. Verificando la operatividad Frame Relay (cont)how frame-relay map(up): ip 10.140.1.1 dlci 100(0x64,0x1840), dynamic, broadcast,, status defined, active • Muestra el mapa de rutas, estaticas o dinamicasGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 44 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-44
  45. 45. Verificando la operatividad Frame Relay (cont)rame-relay map ip 10.140.1.1 dlci 100(0x64,0x1840), dynamic, broadcast,, status defined, activeframe-relay-inarpme map • Clears dynamically created Frame Relay maps GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 45 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-45
  46. 46. Verificando la operatividad Frame Relay (cont)debug Frame lmielay LMI debugging is oning all Frame Relay LMI dataerial0(out): StEnq, myseq 140, yourseen 139, DTE upatagramstart = 0xE008EC, datagramsize = 13R encap = 0xFCF103090 75 01 01 01 03 02 8C 8Berial0(in): Status, myseq 140T IE 1, length 1, type 1A IE 3, length 2, yourseq 140, myseq 140erial0(out): StEnq, myseq 141, yourseen 140, DTE upatagramstart = 0xE008EC, datagramsize = 13R encap = 0xFCF103090 75 01 01 01 03 02 8D 8Cerial0(in): Status, myseq 142T IE 1, length 1, type 0A IE 3, length 2, yourseq 142, myseq 142VC IE 0x7 , length 0x6 , dlci 100, status 0x2 , bw 0 • Displays LMI debug information GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 46 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-46
  47. 47. Selecting a Frame Relay Topology Red completa Red parcial Star (Hub and Spoke) Frame Relay default: nonbroadcast, multiaccess (NBMA)GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 47 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-47
  48. 48. Reachability Issues with Routing Updates B Routing 1 Update B 2 AA C C 3 D Problem: Broadcast traffic must be replicated for each active connectionGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 48 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-48
  49. 49. Resolving Reachability Issues Logical Interface Physical Interface Subnet A S0.1 S0 S0.2 Subnet B S0.3 Subnet C Solution: • Split horizon puede causar problemas en ambientes NBMA • Las Subinterfaces pueden resolver los problemas de split horizon • A single physical interface simulates multiple logical interfacesGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 49 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-49
  50. 50. Configurando Subinterfaces • Point-to-Point – Las Subinterfaces actuan como lineas dedicadas – Cada subinterface point-to-point requiere su propia subred. – Applicable to hub and spoke topologies • Multipoint – Subinterfaces act as NBMA network so they do not resolve the split horizon issue – Can save address space because uses single subnet – Aplicable para topologias de Red parcial y Completas.GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 50 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-50
  51. 51. Configurando Subinterfaces Point-to-Point 10.17.0.1 s0.2 DLCI=110 10.17.0.2 A D s0.3 0 LC B 10.18.0.1 I = 12 interface Serial0 no ip address encapsulation frame-relay ! 10.18.0.2 interface Serial0.2 point-to-point ip address 10.17.0.1 255.255.255.0 bandwidth 64 C frame-relay interface-dlci 110 ! interface Serial0.3 point-to-point ip address 10.18.0.1 255.255.255.0 bandwidth 64 frame-relay interface-dlci 120 !GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 51 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-51
  52. 52. Ejemplo Configuracion Subinterfaces Multipunto 120 B s2.2=10.17.0.1/24 D LC I = s2.1=10.17.0.2/24 DLCI=130 RTR1 RTR3 D LC I = 140 s2.1=10.17.0.3/24 interface Serial2 no ip address RTR4 encapsulation frame-relay s2.1=10.17.0.4/24 ! interface Serial2.2 multipoint ip address 10.17.0.1 255.255.255.0 bandwidth 64 frame-relay map ip 10.17.0.2 120 broadcast frame-relay map ip 10.17.0.3 130 broadcast frame-relay map ip 10.17.0.4 140 broadcastGERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 52 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-52
  53. 53. Laboratorio wg_pc_a 10.2.2.12 pod ro’s s0 e0/1 wg_ro_ A 10.140.1.2 e0/2 e0 a B 10.140.2.2 10.2.2.3 s0 C 10.140.3.2 wg_sw_a 10.140.1.2/24 10.2.2.11 D 10.140.4.2 E 10.140.5.2 Frame Relay F 10.140.6.2 wg_pc_l G 10.140.7.2 10.13.13.12 H 10.140.8.2 wg_ro_l I 10.140.9.2 PPP with CHAP e0/1 e0/2 e0 s0 J 10.140.10.2 FR K 10.140.11.2 10.13.13.3 10.140.12.2/24 wg_sw_l L 10.140.12.2 10.13.13.11 ... fa0/24 fa0/23 fa0/0 s2/7.x 10.140.1.1/24 … 10.140.12.1/24 core_ server core_sw_a core_ro 10.1.1.1 10.1.1.2 10.1.1.3GERENCIA OPERACIÓN Y MANTENIMIENTO DE REDES Y SERVICIOS 53 © 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a—1-53

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