Sauvegarde BRI RNIS avec l'interface de sauvegarde

Options de téléchargement

  • PDF     (219.5 KB)
    Consulter à l'aide d'Adobe Reader sur un grand nombre d'appareils
  • ePub     (93.6 KB)
    Consulter à l’aide de différentes applications sur iPhone, iPad, Android ou Windows Phone
  • Mobi (Kindle)     (111.6 KB)
    Consulter sur un appareil Kindle ou à l’aide d’une application Kindle sur plusieurs appareils
Mis à jour:4 février 2010
ID du document:11047

Langage exempt de préjugés

Dans le cadre de la documentation associée à ce produit, nous nous efforçons d’utiliser un langage exempt de préjugés. Dans cet ensemble de documents, le langage exempt de discrimination renvoie à une langue qui exclut la discrimination en fonction de l’âge, des handicaps, du genre, de l’appartenance raciale de l’identité ethnique, de l’orientation sexuelle, de la situation socio-économique et de l’intersectionnalité. Des exceptions peuvent s’appliquer dans les documents si le langage est codé en dur dans les interfaces utilisateurs du produit logiciel, si le langage utilisé est basé sur la documentation RFP ou si le langage utilisé provient d’un produit tiers référencé. Découvrez comment Cisco utilise le langage inclusif.

À propos de cette traduction

Cisco a traduit ce document en traduction automatisée vérifiée par une personne dans le cadre d’un service mondial permettant à nos utilisateurs d’obtenir le contenu d’assistance dans leur propre langue. Il convient cependant de noter que même la meilleure traduction automatisée ne sera pas aussi précise que celle fournie par un traducteur professionnel.

Introduction

Ce document fournit un exemple de configuration pour la sauvegarde RNIS et fournit des informations de dépannage de base pour ce type de configuration.

Pour plus d'informations sur les mises en oeuvre les plus courantes de la sauvegarde RNIS et les comparaisons entre elles, reportez-vous au document suivant : Évaluation des interfaces de secours, routes statiques flottantes et Dialer Watch pour DDR de secours.

Conditions préalables

Conditions requises

Aucune condition préalable spécifique n'est requise pour ce document.

Components Used

Les informations dans ce document sont basées sur les versions de logiciel et de matériel ci-dessous.

  • Deux routeurs Cisco 2500 (équipements de terminal de données Frame Relay [ETTD] ) exécutant les versions 12.2(3) et 12.2(5) du logiciel Cisco IOS®.

  • Un routeur Cisco 4500 agissant comme commutateur Frame Relay.

Les informations présentées dans ce document ont été créées à partir de périphériques dans un environnement de laboratoire spécifique. All of the devices used in this document started with a cleared (default) configuration. Si vous travaillez dans un réseau opérationnel, assurez-vous de bien comprendre l'impact potentiel de toute commande avant de l'utiliser.

Conventions

Pour plus d'informations sur les conventions des documents, référez-vous aux Conventions utilisées pour les conseils techniques de Cisco.

Configuration

Cette section vous fournit des informations pour configurer les fonctionnalités décrites dans ce document.

Remarque : Pour en savoir plus sur les commandes utilisées dans le présent document, utilisez l’outil de recherche de commandes (clients inscrits seulement).

Diagramme du réseau

Ce document utilise la configuration réseau indiquée dans le diagramme suivant :

bri_isdn_11047.gif

Configurations

Ce document utilise les configurations présentées ci-dessous.

krimson (routeur Cisco 2500) 
krimson#show running-config
Building configuration...

!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
         
!
hostname krimson
!
!
username kevin password 0 <password> !
isdn switch-type basic-net3
!
!
interface Loopback0
ip address 10.7.7.1 255.255.255.0
ip ospf network point-to-point
!
interface Ethernet0
ip address 10.200.16.30 255.255.255.0
!
interface Serial1
bandwidth 64
no ip address
encapsulation frame-relay
no ip route-cache
no ip mroute-cache
!
interface Serial1.1 point-to-point
backup interface Dialer0
ip address 10.5.5.2 255.255.255.0
no ip route-cache
frame-relay interface-dlci 20 
!
interface BRI0
description Testanschluss ISDN(intern), Nr. 4420038
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
load-interval 30
no keepalive
dialer pool-member 1
isdn switch-type basic-net3
no fair-queue
no cdp enable
ppp authentication chap
!
interface Dialer0
ip address 10.9.9.1 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool 1
dialer remote-name kevin
dialer string 6120
dialer-group 1
no cdp enable
ppp authentication chap
!
router ospf 10
log-adjacency-changes
network 10.5.5.0 0.0.0.255 area 0
network 10.7.7.0 0.0.0.255 area 0
network 10.9.9.0 0.0.0.255 area 0
!
ip default-gateway 10.200.16.1
no ip classless
no ip http server
!
access-list 105 permit ip any host 10.7.7.1
access-list 105 permit ip any host 10.8.8.1
access-list 105 permit ip any any
dialer-list 1 protocol ip permit
!
line con 0
exec-timeout 0 0
privilege level 15
line aux 0
transport input all
line vty 0 4
exec-timeout 0 0
password <password> login
!
end

kevin (routeur Cisco 2500) 
kevin#show running-config
Building configuration...

version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname kevin
!
!
username krimson password 0 <password> !
isdn switch-type basic-net3
!
!
interface Loopback0
ip address 10.8.8.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 172.19.0.1 255.255.255.255
!
interface Ethernet0
ip address 10.200.16.26 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip address 10.5.5.1 255.255.255.0
no cdp enable
frame-relay interface-dlci 20 
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
no cdp enable
ppp authentication chap
!
interface Dialer0
ip address 10.9.9.2 255.255.255.0
encapsulation ppp
dialer pool 1
dialer remote-name krimson
dialer-group 1
no cdp enable
ppp authentication chap
!
router ospf 10
log-adjacency-changes
network 10.5.5.0 0.0.0.255 area 0
network 10.8.8.0 0.0.0.255 area 0
network 10.9.9.0 0.0.0.255 area 0
!
ip default-gateway 10.200.16.1
ip classless
!
dialer-list 1 protocol ip permit
no cdp run
!        
line con 0        
exec-timeout 0 0
line aux 0
modem InOut
line vty 0 4
exec-timeout 0 0
password <password> login
!
ntp clock-period 17180102
ntp server 10.200.20.134
end

Vérification

Cette section présente des informations que vous pouvez utiliser pour vous assurer que votre configuration fonctionne correctement.

Utilisez les commandes suivantes pour vérifier votre configuration :

certaines commandes show sont prises en charge par l'outil Interpréteur de sortie, qui vous permet d'afficher une analyse de la sortie de la commande show.

  • show interfaces serial - Affiche des informations sur l'identificateur de connexion de liaison de données multidiffusion (DLCI), les DLCI utilisés sur l'interface et le DLCI utilisé pour l'interface de gestion locale (LMI).

  • show interface dialer - Affiche des informations sur l'interface de numérotation.

  • show ip route - Affiche les entrées de la table de routage IP. 

   krimson#show interface serial 1.1 

 ! --- The initial state before the simulated Frame Relay network failure. ! --- The primary link is up and functional. 

   
   Serial1.1 is up, line protocol is up 
   Hardware is HD64570
   Internet address is 10.5.5.2/24
   Backup interface Dialer0, failure delay 0 sec, 
   secondary disable delay 0 sec
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation FRAME-RELAY
   
   krimson#show int dialer 0 

 ! --- Initial state. The backup interface is in standby mode and inactive.

   Dialer0 is standby mode (spoofing), line protocol is down (spoofing)
   Hardware is Unknown
   Internet address is 10.9.9.1/24
   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   DTR is pulsed for 1 seconds on reset
   Last input 1w6d, output never, output hang never
   Last clearing of "show interface" counters 6w4d
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops) 
   Conversations 0/1/16 (active/max active/max total)
   Reserved Conversations 0/0 (allocated/max allocated)
   Available Bandwidth 42 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   596 packets input, 48924 bytes
   600 packets output, 49280 bytes
   
   krimson#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
   * - candidate default, U - per-user static route, o - ODR
   P - periodic downloaded static route
   
   Gateway of last resort is 10.200.16.1 to network 0.0.0.0
   
   192.168.64.0/30 is subnetted, 1 subnets
   C 192.168.64.0 is directly connected, Dialer4
   10.0.0.0/24 is subnetted, 6 subnets
   O 10.9.9.0 [110/3347] via 10.5.5.1, 00:03:34, Serial1.1
   O 10.8.8.0 [110/1563] via 10.5.5.1, 00:03:34, Serial1.1 

 ! --- The route to the tested destination network points to the ! --- still-active primary link.

   
   C 10.5.5.0 is directly connected, Serial1.1
   C 10.7.7.0 is directly connected, Loopback0
   C 10.9.8.0 is directly connected, Dialer1
   C 10.200.16.0 is directly connected, Ethernet0
   S* 0.0.0.0/0 [1/0] via 10.200.16.1

Ici, nous pouvons voir que l’interface Frame Relay est en panne.

   krimson#
   *Apr 16 23:56:47.840: %LINK-3-UPDOWN: Interface Serial1, 
   changed state to down
   *Apr 16 23:56:47.848: OSPF: Interface Serial1.1 going Down 

 ! --- Here we have simulated a failure within the Frame Relay network. ! --- We can see what was conducted to the Frame Relay DTE router, ! --- and the subinterface going down.

   *Apr 16 23:56:47.852: %OSPF-5-ADJCHG: Process 10, 
   Nbr 172.19.0.1 on Serial1.1    
   from FULL to DOWN, Neighbor Down: Interface down or detached
   *Apr 16 23:56:48.736: BACKUP(Serial1.1): event = primary went down
   *Apr 16 23:56:48.740: BACKUP(Serial1.1): changed state to 
   "waiting to backup"
   *Apr 16 23:56:48.744: BACKUP(Serial1.1): event = timer expired
   *Apr 16 23:56:48.748: Di0 DDR is shutdown, could not clear interface.
   *Apr 16 23:56:48.752: BACKUP(Serial1.1): 
   secondary interface (Dialer0) made active 

 ! --- The configured backup interface is active.

   *Apr 16 23:56:48.752: BACKUP(Serial1.1): changed state to "backup mode"
   *Apr 16 23:56:48.756: OSPF: Interface Dialer0 going Up
   *Apr 16 23:56:48.760: BR0 DDR: rotor dialout [priority]
   *Apr 16 23:56:48.764: BR0 DDR: Dialing cause ip (s=10.9.9.1, d=224.0.0.5) 

 ! --- OSPF packets trigger the call.

   *Apr 16 23:56:48.768: BR0 DDR: Attempting to dial 6120
   *Apr 16 23:56:48.784: ISDN BR0: TX -> SETUP pd = 8 callref = 0x3E
   *Apr 16 23:56:48.792: Bearer Capability i = 0x8890
   *Apr 16 23:56:48.796: Channel ID i = 0x83
   *Apr 16 23:56:48.804: Called Party Number i = 0x80, '6120', 
   Plan:Unknown, Type:Unknown
   *Apr 16 23:56:48.844: %LINEPROTO-5-UPDOWN: Line protocol on  
   Interface Serial1, changed state to down
   *Apr 16 23:56:48.884: ISDN BR0: RX <- CALL_PROC pd = 8 callref = 0xBE
   *Apr 16 23:56:48.892: Channel ID i = 0x89
   *Apr 16 23:56:49.144: ISDN BR0: RX <- CONNECT pd = 8 callref = 0xBE
   *Apr 16 23:56:49.160: %LINK-3-UPDOWN: Interface BRI0:1, 
   changed state to up
   *Apr 16 23:56:49.168: %DIALER-6-BIND: 
   Interface BR0:1 bound to profile Di0
   *Apr 16 23:56:49.176: BR0:1 PPP: Treating connection as a callout
   *Apr 16 23:56:49.180: BR0:1 PPP: Phase is ESTABLISHING, Active Open 
   [0 sess, 0 load]
   *Apr 16 23:56:49.184: BR0:1 LCP: O CONFREQ [Closed] id 49 len 15
   *Apr 16 23:56:49.188: BR0:1 LCP: AuthProto CHAP (0x0305C22305)
   *Apr 16 23:56:49.188: BR0:1 LCP: MagicNumber 0xF2143EDB (0x0506F2143EDB)
   *Apr 16 23:56:49.196: ISDN BR0: TX -> CONNECT_ACK pd = 8 callref = 0x3E
   *Apr 16 23:56:49.224: BR0:1 LCP: I CONFREQ [REQsent] id 83 len 15
   *Apr 16 23:56:49.228: BR0:1 LCP: AuthProto CHAP (0x0305C22305)
   *Apr 16 23:56:49.232: BR0:1 LCP: MagicNumber 0x9ADACD69 (0x05069ADACD69)
   *Apr 16 23:56:49.236: BR0:1 LCP: O CONFACK [REQsent] id 83 len 15
   *Apr 16 23:56:49.236: BR0:1 LCP: AuthProto CHAP (0x0305C22305)
   *Apr 16 23:56:49.240: BR0:1 LCP: MagicNumber 0x9ADACD69 (0x05069ADACD69)
   *Apr 16 23:56:49.244: BR0:1 LCP: I CONFACK [ACKsent] id 49 len 15
   *Apr 16 23:56:49.248: BR0:1 LCP: AuthProto CHAP (0x0305C22305)
   *Apr 16 23:56:49.252: BR0:1 LCP: MagicNumber 0xF2143EDB (0x0506F2143EDB)
   *Apr 16 23:56:49.252: BR0:1 LCP: State is Open
   *Apr 16 23:56:49.256: BR0:1 PPP: Phase is AUTHENTICATING, by both 
   [0 sess, 0 load]
   *Apr 16 23:56:49.260: BR0:1 CHAP: O CHALLENGE id 49 len 28 from "krimson"
   *Apr 16 23:56:49.276: BR0:1 CHAP: I CHALLENGE id 51 len 26 from "kevin"
   *Apr 16 23:56:49.284: BR0:1 CHAP: O RESPONSE id 51 len 28 from "krimson"
   *Apr 16 23:56:49.332: BR0:1 CHAP: I SUCCESS id 51 len 4
   *Apr 16 23:56:49.344: BR0:1 CHAP: I RESPONSE id 49 len 26 from "kevin"
   *Apr 16 23:56:49.352: BR0:1 CHAP: O SUCCESS id 49 len 4
   *Apr 16 23:56:49.356: BR0:1 PPP: Phase is UP [0 sess, 0 load]
   *Apr 16 23:56:49.360: BR0:1 IPCP: O CONFREQ [Not negotiated] id 41 len 10
   *Apr 16 23:56:49.364: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901)
   *Apr 16 23:56:49.376: BR0:1 IPCP: I CONFREQ [REQsent] id 29 len 10
   *Apr 16 23:56:49.380: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902)
   *Apr 16 23:56:49.384: BR0:1 IPCP: O CONFACK [REQsent] id 29 len 10
   *Apr 16 23:56:49.388: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902)
   *Apr 16 23:56:49.396: BR0:1 IPCP: I CONFACK [ACKsent] id 41 len 10
   *Apr 16 23:56:49.400: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901)
   *Apr 16 23:56:49.400: BR0:1 IPCP: State is Open
   *Apr 16 23:56:49.408: BR0:1 DDR: dialer protocol up
   *Apr 16 23:56:49.416: Di0 IPCP: Install route to 10.9.9.2
   *Apr 16 23:56:49.960: OSPF: Rcv hello from 172.19.0.1 area 0 from 
   Dialer0 10.9.9.2
   *Apr 16 23:56:49.964: OSPF: End of hello processing
   *Apr 16 23:56:50.356: %LINEPROTO-5-UPDOWN: 
   Line protocol on Interface BRI0:1, changed state to up
   *Apr 16 23:56:50.748: %LINK-3-UPDOWN: Interface Dialer0, 
   changed state to up
   *Apr 16 23:56:50.752: Di0 LCP: Not allowed on a Dialer Profile
   *Apr 16 23:56:50.752: BACKUP(Dialer0): event = primary came up
   *Apr 16 23:56:55.176: %ISDN-6-CONNECT: 
   Interface BRI0:1 is now connected to 6120 kevin
   *Apr 16 23:56:58.804: OSPF: Rcv DBD from 172.19.0.1 on Dialer0 
   seq 0x988 opt 0x42 flag 0x7 len 32 mtu 1500 state INIT
   *Apr 16 23:56:58.808: OSPF: 2 Way Communication to 172.19.0.1 
   on Dialer0, state 2WAY
   
   krimson#show interface serial 1.1
   Serial1.1 is down, line protocol is down 
   
! --- The primary link is down.

   Hardware is HD64570
   Internet address is 10.5.5.2/24
   Backup interface Dialer0, failure delay 0 sec, 
   secondary disable delay 0 sec
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation FRAME-RELAY
   
   krimson#show interface dialer 0
   Dialer0 is up, line protocol is up (spoofing) 

 ! --- The backup interface is active and bearing traffic.

   Hardware is Unknown
   Internet address is 10.9.9.1/24
   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   DTR is pulsed for 1 seconds on reset
   Interface is bound to BR0:1
   Last input 1w6d, output never, output hang never
   Last clearing of "show interface" counters 6w4d
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops) 
   Conversations 0/1/16 (active/max active/max total)
   Reserved Conversations 0/0 (allocated/max allocated)
   Available Bandwidth 42 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   614 packets input, 50240 bytes
   618 packets output, 50584 bytes
   Bound to:
   BRI0:1 is up, line protocol is up 
   Hardware is BRI
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   Keepalive not set
   DTR is pulsed for 1 seconds on reset
   Time to interface disconnect: idle 00:01:57
   Interface is bound to Di0 (Encapsulation PPP)
   LCP Open
   Open: IPCP
   Last input 00:00:01, 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
   30 second input rate 0 bits/sec, 0 packets/sec
   30 second output rate 0 bits/sec, 0 packets/sec
   3910 packets input, 394443 bytes, 0 no buffer
   Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
   29 input errors, 18 CRC, 0 frame, 0 overrun, 0 ignored, 11 abort
   3613 packets output, 222417 bytes, 0 underruns
   0 output errors, 0 collisions, 27 interface resets
   0 output buffer failures, 0 output buffers swapped out
   607 carrier transitions
   
   krimson#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
   * - candidate default, U - per-user static route, o - ODR
   P - periodic downloaded static route

Gateway of last resort is 10.200.16.1 to network 0.0.0.0
 
192.168.64.0/30 is subnetted, 1 subnets
   C 192.168.64.0 is directly connected, Dialer4
   10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
   C 10.9.9.2/32 is directly connected, Dialer0
   O 10.8.8.0/24 [110/1786] via 10.9.9.2, 00:00:53, Dialer0 
   
! --- The route entry to the destination network is now pointing to ! --- the backup interface as a next hop.

   C 10.9.9.0/24 is directly connected, Dialer0
   C 10.7.7.0/24 is directly connected, Loopback0
   C 10.9.8.0/24 is directly connected, Dialer1
   C 10.200.16.0/24 is directly connected, Ethernet0
   S* 0.0.0.0/0 [1/0] via 10.200.16.1
   
   krimson#ping 10.8.8.1
   Type escape sequence to abort.
   Sending 5, 100-byte ICMP Echos to 10.8.8.1, timeout is 2 seconds:
   !!!!!
   Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms

Ici, nous pouvons voir le système revenir à son état initial une fois que la défaillance du réseau Frame Relay a été résolue :

krimson#show interface serial 1.1
   Serial1.1 is up, line protocol is up 
   Hardware is HD64570
   Internet address is 10.5.5.2/24
   Backup interface Dialer0, failure delay 0 sec, 
   secondary disable delay 0 sec
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation FRAME-RELAY
   
   krimson#show interface dialer 0
   Dialer0 is standby mode (spoofing), line protocol is down (spoofing)
   Hardware is Unknown
   Internet address is 10.9.9.1/24
   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   DTR is pulsed for 1 seconds on reset
   Last input 1w6d, output never, output hang never
   Last clearing of "show interface" counters 6w5d
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops) 
   Conversations 0/1/16 (active/max active/max total)
   Reserved Conversations 0/0 (allocated/max allocated)
   Available Bandwidth 42 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   665 packets input, 54008 bytes
   671 packets output, 54548 bytes
   
   krimson#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
   * - candidate default, U - per-user static route, o - ODR
   P - periodic downloaded static route
   Gateway of last resort is 10.200.16.1 to network 0.0.0.0
   192.168.64.0/30 is subnetted, 1 subnets
   C 192.168.64.0 is directly connected, Dialer4
   10.0.0.0/24 is subnetted, 6 subnets
   O 10.9.9.0 [110/3347] via 10.5.5.1, 00:08:39, Serial1.1
   O 10.8.8.0 [110/1563] via 10.5.5.1, 00:08:39, Serial1.1
   C 10.5.5.0 is directly connected, Serial1.1
   C 10.7.7.0 is directly connected, Loopback0
   C 10.9.8.0 is directly connected, Dialer1
   C 10.200.16.0 is directly connected, Ethernet0
   S* 0.0.0.0/0 [1/0] via 10.200.16.1
   krimson#

Remarque : Aucune configuration spécifique n'est requise sur le côté appelé.

La même sortie show enregistrée en fonctionnement normal contient les informations suivantes :

kevin#show interface serial 0.1
   Serial0.1 is up, line protocol is up 

 ! --- The primary interface is up and running.

   Hardware is HD64570
   Internet address is 10.5.5.1/24
   MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation FRAME-RELAY
   
   kevin#show interface dialer 0
   Dialer0 is up (spoofing), line protocol is up (spoofing) 

 ! --- Note: On the called side, the dialer interface is active ! --- and not in standby mode.

   Hardware is Unknown
   Internet address is 10.9.9.2/24
   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   DTR is pulsed for 1 seconds on reset
   Last input 1w6d, output never, output hang never
   Last clearing of "show interface" counters 4w2d
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops) 
   Conversations 0/1/16 (active/max active/max total)
   Reserved Conversations 0/0 (allocated/max allocated)
   Available Bandwidth 42 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   598 packets input, 49252 bytes
   596 packets output, 48924 bytes

   kevin#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
   * - candidate default, U - per-user static route, o - ODR
   P - periodic downloaded static route
   
   Gateway of last resort is 10.200.16.1 to network 0.0.0.0
   
   172.17.0.0/32 is subnetted, 1 subnets
   S 172.17.247.195 [1/0] via 10.200.16.1
   172.19.0.0/32 is subnetted, 1 subnets
   C 172.19.0.1 is directly connected, Loopback1
   10.0.0.0/24 is subnetted, 5 subnets
   C 10.5.5.0 is directly connected, Serial0.1
   O 10.7.7.0 [110/65] via 10.5.5.2, 00:04:27, Serial0.1
   C 10.9.9.0 is directly connected, Dialer0
   C 10.8.8.0 is directly connected, Loopback0
   C 10.200.16.0 is directly connected, Ethernet0
   S* 0.0.0.0/0 [1/0] via 10.200.16.1

Voici les mêmes informations enregistrées lors de l'échec : 

kevin#show interface serial 0.1
   Serial0.1 is down, line protocol is down 
   Hardware is HD64570
   Internet address is 10.5.5.1/24
   MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation FRAME-RELAY
   
   kevin#show interface dialer 0
   Dialer0 is up, line protocol is up (spoofing)
   Hardware is Unknown
   Internet address is 10.9.9.2/24
   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   DTR is pulsed for 1 seconds on reset
   Interface is bound to BR0:1
   Last input 1w6d, output never, output hang never
   Last clearing of "show interface" counters 4w2d
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops) 
   Conversations 0/1/16 (active/max active/max total)
   Reserved Conversations 0/0 (allocated/max allocated)
   Available Bandwidth 42 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   618 packets input, 50700 bytes
   616 packets output, 50384 bytes
   Bound to:
   BRI0:1 is up, line protocol is up 
   Hardware is BRI
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, 
   reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation PPP, loopback not set
   Keepalive set (10 sec)
   DTR is pulsed for 1 seconds on reset
   Time to interface disconnect: idle 00:01:57
   Interface is bound to Di0 (Encapsulation PPP)
   LCP Open
   Open: IPCP
   Last input 00:00:03, 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
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
   1280 packets input, 138077 bytes, 0 no buffer
   Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
   9789 input errors, 9789 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
   1309 packets output, 138487 bytes, 0 underruns
   0 output errors, 0 collisions, 15 interface resets
   0 output buffer failures, 0 output buffers swapped out
   351 carrier transitions
   
   kevin#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
   * - candidate default, U - per-user static route, o - ODR
   P - periodic downloaded static route
   Gateway of last resort is 10.200.16.1 to network 0.0.0.0
   172.17.0.0/32 is subnetted, 1 subnets
   S 172.17.247.195 [1/0] via 10.200.16.1
   172.19.0.0/32 is subnetted, 1 subnets
   C 172.19.0.1 is directly connected, Loopback1
   10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
   O 10.7.7.0/24 [110/1786] via 10.9.9.1, 00:01:21, Dialer0
   C 10.9.9.0/24 is directly connected, Dialer0
   C 10.8.8.0/24 is directly connected, Loopback0
   C 10.9.9.1/32 is directly connected, Dialer0
   C 10.200.16.0/24 is directly connected, Ethernet0
   S* 0.0.0.0/0 [1/0] via 10.200.16.1

Dépannage

Cette section fournit des informations que vous pouvez utiliser pour dépanner votre configuration.

Les configurations Frame Relay avec des sous-interfaces point à point et le protocole OSPF (Open Shortest Path First) comme protocole de routage utilisé ici sont spécifiques à cette configuration. Cependant, les étapes de dépannage indiquées sont plus générales et peuvent être utilisées avec différentes configurations, telles que Frame Relay point à multipoint ou une liaison principale avec l’encapsulation HDLC (High-Level Data Link Control) ou PPP (Point to Point Protocol), quel que soit le protocole de routage utilisé.

Pour vérifier la fonctionnalité de sauvegarde, l’une des interfaces du routeur Cisco 4500 agissant en tant que commutateur Frame Relay a été placée en état d’arrêt afin de simuler un problème au sein du réseau Frame Relay. Par conséquent, cela conduit à l’état inactif du circuit virtuel permanent vers le routeur ETTD via le réseau Frame Relay et à un événement de désactivation de la sous-interface Frame Relay. Ceci active l'interface de sauvegarde.

Dépannage des commandes

Note : Avant d'émettre des commandes debug, consultez Informations importantes sur les commandes de débogage.

  • debug isdn q931

  • debug backup - Débogue les événements de sauvegarde.

  • debug dialer - Affiche des informations de débogage sur les paquets ou les événements d'une interface de numérotation.

  • debug ppp negotiation - Entraîne la commande debug ppp à afficher les paquets PPP transmis au démarrage du protocole PPP, où les options PPP sont négociées.

  • debug ppp authentication - Permet à la commande debug ppp d'afficher les messages de protocole d'authentification, y compris les échanges de paquets CHAP (Challenge Authentication Protocol) et les échanges PAP (Password Authentication Protocol).

  • debug ip ospf events - Affiche des informations sur les événements liés au protocole OSPF, tels que les contiguïtés, les informations d'inondation, la sélection du routeur désigné et le calcul SPF (Shortest Path First).

  • debug frame-relay events - Affiche des informations de débogage sur les réponses ARP Frame Relay sur les réseaux qui prennent en charge un canal de multidiffusion et utilisent l'adressage dynamique.

Informations connexes

Historique de révision

Révision Date de publication Commentaires
1.0
04-Feb-2010
Première publication

Ce document vous est-il utile?

FeedbackCommentaires

Contacter Cisco

Ce document s’applique à ces produits