Este documento fornece uma configuração de exemplo para implementar um backup de ISDN com rotas estáticas flutuantes e fornece informações básicas de Troubleshooting para esse tipo de configuração.
Para obter informações sobre as implementações mais comuns de backup de ISDN e comparações entre elas, consulte o seguinte documento: Avaliação de interfaces de backup, rotas estáticas flutuantes e Dialer Watch para o backup de chamada DDR.
Não existem requisitos específicos para este documento.
As informações neste documento são baseadas nas versões de software e hardware abaixo.
Dois roteadores Cisco 2500 executando Cisco IOS® Software Release 12.2(3) e 12.2(5)
As informações neste documento foram criadas a partir de dispositivos em um ambiente de laboratório específico. All of the devices used in this document started with a cleared (default) configuration. Se você estiver trabalhando em uma rede ativa, certifique-se de que entende o impacto potencial de qualquer comando antes de utilizá-lo.
Para obter mais informações sobre convenções de documento, consulte as Convenções de dicas técnicas Cisco.
Nesta seção, você encontrará informações para configurar os recursos descritos neste documento.
Observação: para encontrar informações adicionais sobre os comandos usados neste documento, use a ferramenta Command Lookup Tool (somente clientes registrados).
Este documento utiliza a instalação de rede mostrada no diagrama abaixo.
Este documento utiliza as configurações mostradas abaixo.
krimson (Cisco 2500 Router) |
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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 ! interface Serial0 ip address 10.1.2.1 255.255.255.0 ! interface BRI0 no ip address encapsulation ppp no ip route-cache no ip mroute-cache load-interval 30 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 8114 dialer-group 1 no cdp enable ppp authentication chap ! ip classless ip route 10.8.8.0 255.255.255.0 10.1.2.2 ip route 10.8.8.0 255.255.255.0 10.9.9.2 180 no ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password <password> login ! end |
kevin (Cisco 2500 Router) |
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kevin#show running-config Building configuration... Current configuration : 1205 bytes ! version 12.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname kevin ! username krimson password 0 <password> ! isdn switch-type basic-net3 ! ! ! interface Loopback0 ip address 10.8.8.1 255.255.255.0 ! interface Serial0 ip address 10.1.2.2 255.255.255.0 clockrate 2000000 ! interface Serial1 no ip address shutdown ! 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 string 8113 dialer-group 1 no cdp enable ppp authentication chap ! ! dialer-list 1 protocol ip permit ! ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password <password> login ! end |
Esta seção fornece informações que você pode usar para confirmar se sua configuração está funcionando adequadamente.
A Output Interpreter Tool (somente clientes registrados) oferece suporte a determinados comandos show, o que permite exibir uma análise da saída do comando show.
show ip route - Exibe entradas de tabela de IP Routing.
show interfaces - Exibe estatísticas para todas as interfaces configuradas no roteador ou no servidor de acesso.
Esta seção fornece informações que podem ser usadas para o troubleshooting da sua configuração.
A Output Interpreter Tool (somente clientes registrados) oferece suporte a determinados comandos show, o que permite exibir uma análise da saída do comando show.
Observação: antes de emitir comandos debug, consulte Informações importantes sobre comandos debug.
debug isdn q931 - Exibe informações sobre a configuração de chamadas e a desconexão de conexões de rede ISDN (Camada 3) entre o roteador local (lado do usuário) e a rede.
debug isdn events - Exibe eventos de ISDN que ocorrem no lado do usuário (no roteador) da interface ISDN. Os eventos ISDN que podem ser exibidos são eventos Q.931 (configuração de chamada e destruição de conexões de rede ISDN).
debug dialer - Exibe informações de depuração sobre os pacotes ou eventos em uma interface de discador.
debug ppp negotiation - Faz com que o comando debug ppp exiba pacotes PPP transmitidos durante a inicialização de PPP, em que as opções de PPP são negociadas.
debug ppp authentication – Faz com que o comando debug ppp exiba mensagens de protocolo de autenticação, incluindo alterações de pacote do Protocolo de autenticação de desafio (CHAP) e intercâmbios de Protocolo de autenticação de senha (PAP).
Aqui, podemos testar a funcionalidade de backup usando os comandos shutdown e no shutdown na interface serial no lado remoto. Conseqüentemente, isso leva ao desaparecimento da rota ip principal para a rede de destino em questão.
Primeiro, vamos examinar o estado inicial da interface primária e a tabela de roteamento ip:
krimson#show interface serial 0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.1.2.1/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:00:07, output 00:00:07, output hang never Last clearing of "show interface" counters never 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 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 1000 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 92 packets input, 7599 bytes, 0 no buffer Received 62 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 99 packets output, 8991 bytes, 0 underruns 0 output errors, 0 collisions, 12 interface resets 0 output buffer failures, 0 output buffers swapped out 4 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up 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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks C 10.1.2.0/24 is directly connected, Serial0 S 10.8.8.0/24 [1/0] via 10.1.2.2 !--- The IP route for the destination network points to the primary link. C 10.9.9.0/24 is directly connected, Dialer0 C 10.7.7.0/24 is directly connected, Loopback0 C 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1
kevin#show interface serial 0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.1.2.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:00:00, output 00:00:08, output hang never Last clearing of "show interface" counters never 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 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 106 packets input, 9432 bytes, 0 no buffer Received 71 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 98 packets output, 8016 bytes, 0 underruns 0 output errors, 0 collisions, 4 interface resets 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up 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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks C 10.1.2.0/24 is directly connected, Serial0 C 10.9.9.0/24 is directly connected, Dialer0 C 10.8.8.0/24 is directly connected, Loopback0 C 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1 kevin#
Agora podemos simular a falha do link usando o comando shutdown na interface serial remota:
krimson# *Mar 4 15:25:18.302: %LINK-3-UPDOWN: Interface Serial0, changed state to down *Mar 4 15:25:19.302: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down
Podemos ver aqui que o link principal foi desativado.
krimson#show interface serial 0 Serial0 is down, line protocol is down Hardware is HD64570 Internet address is 10.1.2.1/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:00:22, output 00:00:32, output hang never Last clearing of "show interface" counters never 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 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 108 packets input, 8526 bytes, 0 no buffer Received 78 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 114 packets output, 9895 bytes, 0 underruns 0 output errors, 0 collisions, 12 interface resets 0 output buffer failures, 0 output buffers swapped out 5 carrier transitions DCD=down DSR=down DTR=up RTS=up CTS=down krimson#
Os detalhes da tabela de roteamento agora mostram que a rota flutuante está instalada na tabela de roteamento:
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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks S 10.8.8.0/24 [180/0] via 10.9.9.2 C 10.9.9.0/24 is directly connected, Dialer0 C 10.7.7.0/24 is directly connected, Loopback0 C 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1 krimson#
No roteador chamado, podemos simular a falha simulada de link primário, usando o comando shutdown na interface serial 0 local:
kevin#configure terminal Enter configuration commands, one per line. End with CNTL/Z. kevin(config)#interface serial 0 kevin(config-if)#shutdown *Mar 4 15:32:00.250: %LINK-5-CHANGED: Interface Serial0, changed state to administratively down *Mar 4 15:32:01.250: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down *Mar 4 15:32:03.742: %SYS-5-CONFIG_I: Configured from console by console
Agora podemos ver que o link principal está inativo:
kevin#show interface serial 0 Serial0 is administratively down, line protocol is down Hardware is HD64570 Internet address is 10.1.2.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:01:28, output 00:01:18, output hang never Last clearing of "show interface" counters never 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 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 114 packets input, 9895 bytes, 0 no buffer Received 79 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 108 packets output, 8526 bytes, 0 underruns 0 output errors, 0 collisions, 4 interface resets 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=down DSR=down DTR=up RTS=up CTS=down
O tráfego de ping definido como tráfego interessante inicia a chamada de saída através da interface do discador 0 de backup.
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: *Mar 4 15:27:39.618: BR0 DDR: rotor dialout [priority] *Mar 4 15:27:39.622: BR0 DDR: Dialing cause ip (s=10.9.9.1, d=10.8.8.1) *Mar 4 15:27:39.626: BR0 DDR: Attempting to dial 8114 *Mar 4 15:27:39.642: ISDN BR0: TX -> SETUP pd = 8 callref = 0x09 *Mar 4 15:27:39.646: Bearer Capability i = 0x8890 *Mar 4 15:27:39.654: Channel ID i = 0x83 *Mar 4 15:27:39.658: Called Party Number i = 0x80, '8114', Plan:Unknown, Type:Unknown *Mar 4 15:27:39.718: ISDN BR0: RX <- CALL_PROC pd = 8 callref = 0x89 *Mar 4 15:27:39.722: Channel ID i = 0x89 *Mar 4 15:27:39.974: ISDN BR0: RX <- CONNECT pd = 8 callref = 0x89 *Mar 4 15:27:39.990: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up *Mar 4 15:27:39.998: %DIALER-6-BIND: Interface BR0:1 bound to profile Di0 *Mar 4 15:27:40.010: BR0:1 PPP: Treating connection as a callout *Mar 4 15:27:40.010: BR0:1 PPP: Phase is ESTABLISHING, Active Open [0 sess, 0 load] *Mar 4 15:27:40.014: BR0:1 LCP: O .!!!CONFREQ [Closed] id 19 len 15 *Mar 4 15:27:40.018: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:27:40.022: BR0:1 LCP: MagicNumber 0x12D0A490 (0x050612D0A490) *Mar 4 15:27:40.030: ISDN BR0: TX -> CONNECT_ACK pd = 8 callref = 0x09 *Mar 4 15:27:40.054: BR0:1 LCP: I CONFREQ [REQsent] id 9 len 15 *Mar 4 15:27:40.058: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:27:40.062: BR0:1 LCP: MagicNumber 0x12D6B638 (0x050612D6B638) *Mar 4 15:27:40.066: BR0:1 LCP: O CONFACK [REQsent] id 9 len 15 *Mar 4 15:27:40.066: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:27:40.070: BR0:1 LCP: MagicNumber 0x12D6B638 (0x050612D6B638) *Mar 4 15:27:40.074: BR0:1 LCP: I CONFACK [ACKsent] id 19 len 15 *Mar 4 15:27:40.078: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:27:40.082: BR0:1 LCP: MagicNumber 0x12D0A490 (0x050612D0A490) *Mar 4 15:27:40.082: BR0:1 LCP: State is Open *Mar 4 15:27:40.086: BR0:1 PPP: Phase is AUTHENTICATING, by both [0 sess, 0 load] *Mar 4 ! Suc15:27:40.090: BR0:1 CHAP: O CHALLENGE id 7 len 28 from "krimson" *Mar 4 15:27:40.106: BR0:1 CHAP: I CHALLENGE id 7 len 26 from "kevin" *Mar 4 15:27:40.110: BR0:1 CHAP: O RESPONSE id 7 len 28 from "krimson" *Mar 4 15:27:40.138: BR0:1 CHAP: I SUCCESS id 7 len 4 *Mar 4 15:27:40.150: BR0:1 CHAP: I RESPONSE id 7 len 26 from "kevin" *Mar 4 15:27:40.158: BR0:1 CHAP: O SUCCESS id 7 len 4 *Mar 4 15:27:40.162: BR0:1 PPP: Phase is UP [0 sess, 0 load] *Mar 4 15:27:40.166: BR0:1 IPCP: O CONFREQ [Not negotiated] id 2 len 10 *Mar 4 15:27:40.170: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901) *Mar 4 15:27:40.186: BR0:1 IPCP: I CONFREQ [REQsent] id 2 len 10 *Mar 4 15:27:40.190: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902) *Mar 4 15:27:40.190: BR0:1 IPCP: O CONFACK [REQsent] id 2 len 10 *Mar 4 15:27:40.194: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902) *Mar 4 15:27:40.202: BR0:1 IPCP: I CONFACK [ACKsent] id 2 len 10 *Mar 4 15:27:40.206: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901) *Mar 4 15:27:40.206: BR0:1 IPCP: State is Open *Mar 4 15:27:40.214: BR0:1 DDR: dialer protocol up *Mar 4 15:27:40.218: Di0 IPCP: Install route to 10.9.9.2 *Mar 4 15:27:41.162: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to upcess rate is 80 percent (4/5), round-trip min/avg/max = 36/47/76 ms krimson#
Ao mesmo tempo, as depurações em execução no lado chamado mostram a seguinte saída para esta mesma chamada:
kevin# *Mar 4 15:34:21.698: ISDN BR0: RX <- SETUP pd = 8 callref = 0x07 *Mar 4 15:34:21.706: Bearer Capability i = 0x8890 *Mar 4 15:34:21.714: Channel ID i = 0x89 *Mar 4 15:34:21.718: Calling Party Number i = 0xA1, '8113', Plan:ISDN, Type:National *Mar 4 15:34:21.734: Called Party Number i = 0xC1, '8114', Plan:ISDN, Type:Subscriber(local) *Mar 4 15:34:21.762: ISDN BR0: Event: Received a DATA call from 8113 on B1 at 64 Kb/s *Mar 4 15:34:21.762: ISDN BR0: Event: Accepting the call id 0xC *Mar 4 15:34:21.766: BR0:1: interface must be fifo queue, force fifo *Mar 4 15:34:21.774: %DIALER-6-BIND: Interface BR0:1 bound to profile Di0 *Mar 4 15:34:21.786: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up *Mar 4 15:34:21.798: BR0:1 PPP: Treating connection as a callin *Mar 4 15:34:21.802: BR0:1 PPP: Phase is ESTABLISHING, Passive Open [0 sess, 0 load] *Mar 4 15:34:21.806: BR0:1 LCP: State is Listen *Mar 4 15:34:21.818: ISDN BR0: TX -> CALL_PROC pd = 8 callref = 0x87 *Mar 4 15:34:21.826: Channel ID i = 0x89 *Mar 4 15:34:21.854: ISDN BR0: TX -> CONNECT pd = 8 callref = 0x87 *Mar 4 15:34:21.918: ISDN BR0: RX <- CONNECT_ACK pd = 8 callref = 0x07 *Mar 4 15:34:21.926: Channel ID i = 0x89 *Mar 4 15:34:21.978: BR0:1 LCP: I CONFREQ [Listen] id 19 len 15 *Mar 4 15:34:21.982: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:34:21.986: BR0:1 LCP: MagicNumber 0x12D0A490 (0x050612D0A490) *Mar 4 15:34:21.990: BR0:1 LCP: O CONFREQ [Listen] id 9 len 15 *Mar 4 15:34:21.994: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:34:21.994: BR0:1 LCP: MagicNumber 0x12D6B638 (0x050612D6B638) *Mar 4 15:34:21.998: BR0:1 LCP: O CONFACK [Listen] id 19 len 15 *Mar 4 15:34:22.002: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:34:22.006: BR0:1 LCP: MagicNumber 0x12D0A490 (0x050612D0A490) *Mar 4 15:34:22.030: BR0:1 LCP: I CONFACK [ACKsent] id 9 len 15 *Mar 4 15:34:22.034: BR0:1 LCP: AuthProto CHAP (0x0305C22305) *Mar 4 15:34:22.034: BR0:1 LCP: MagicNumber 0x12D6B638 (0x050612D6B638) *Mar 4 15:34:22.038: BR0:1 LCP: State is Open *Mar 4 15:34:22.042: BR0:1 PPP: Phase is AUTHENTICATING, by both [0 sess, 0 load] *Mar 4 15:34:22.046: BR0:1 CHAP: O CHALLENGE id 7 len 26 from "kevin" *Mar 4 15:34:22.050: BR0:1 CHAP: I CHALLENGE id 7 len 28 from "krimson" *Mar 4 15:34:22.054: BR0:1 CHAP: Waiting for peer to authenticate first *Mar 4 15:34:22.070: BR0:1 CHAP: I RESPONSE id 7 len 28 from "krimson" *Mar 4 15:34:22.078: BR0:1 CHAP: O SUCCESS id 7 len 4 *Mar 4 15:34:22.082: BR0:1 CHAP: Processing saved Challenge, id 7 *Mar 4 15:34:22.090: BR0:1 CHAP: O RESPONSE id 7 len 26 from "kevin" *Mar 4 15:34:22.114: BR0:1 CHAP: I SUCCESS id 7 len 4 *Mar 4 15:34:22.118: BR0:1 PPP: Phase is UP [0 sess, 0 load] *Mar 4 15:34:22.122: BR0:1 IPCP: O CONFREQ [Not negotiated] id 2 len 10 *Mar 4 15:34:22.126: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902) *Mar 4 15:34:22.130: BR0:1 IPCP: I CONFREQ [REQsent] id 2 len 10 *Mar 4 15:34:22.134: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901) *Mar 4 15:34:22.138: BR0:1 IPCP: O CONFACK [REQsent] id 2 len 10 *Mar 4 15:34:22.142: BR0:1 IPCP: Address 10.9.9.1 (0x03060A090901) *Mar 4 15:34:22.226: BR0:1 IPCP: I CONFACK [ACKsent] id 2 len 10 *Mar 4 15:34:22.230: BR0:1 IPCP: Address 10.9.9.2 (0x03060A090902) *Mar 4 15:34:22.230: BR0:1 IPCP: State is Open *Mar 4 15:34:22.242: BR0:1 DDR: dialer protocol up *Mar 4 15:34:22.250: Di0 IPCP: Install route to 10.9.9.1 *Mar 4 15:34:23.114: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up *Mar 4 15:34:27.794: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8113 krimson
O estado depois do backup é "up":
krimson#show interface dialer 0 Dialer0 is up, line protocol is up (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 Interface is bound to BR0:1 Last input never, output never, output hang never Last clearing of "show interface" counters 00:13:26 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 36 packets input, 2160 bytes 36 packets output, 2160 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) Time to interface disconnect: idle 00:01:33 Interface is bound to Di0 (Encapsulation PPP) LCP Open Open: IPCP Last input 00:00:26, output 00:00:01, 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 126 packets input, 3664 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 131 packets output, 3777 bytes, 0 underruns 0 output errors, 0 collisions, 15 interface resets 0 output buffer failures, 0 output buffers swapped out 28 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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 5 subnets, 3 masks C 10.9.9.2/32 is directly connected, Dialer0 S 10.8.8.0/24 [180/0] via 10.9.9.2 C 10.9.9.0/24 is directly connected, Dialer0 C 10.7.7.0/24 is directly connected, Loopback0 C 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1
O estado após o backup é "ativo".
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 never, output never, output hang never Last clearing of "show interface" counters 00:16:18 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 40 packets input, 2224 bytes 40 packets output, 2224 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) Time to interface disconnect: idle 00:01:11 Interface is bound to Di0 (Encapsulation PPP) LCP Open Open: IPCP Last input 00:00:48, output 00:00:00, 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 136 packets input, 3857 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 131 packets output, 3744 bytes, 0 underruns 0 output errors, 0 collisions, 12 interface resets 0 output buffer failures, 0 output buffers swapped out 35 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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks 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 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1
Aqui, simulamos a recuperação do link primário usando o comando no shutdown na interface serial remota:
krimson# *Mar 4 15:28:58.726: %LINK-3-UPDOWN: Interface Serial0, changed state to up *Mar 4 15:28:59.730: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up
O backup é desconectado após o timeout de ociosidade.
krimson#show isdn active -------------------------------------------------------------------------------- ISDN ACTIVE CALLS -------------------------------------------------------------------------------- Call Calling Called Remote Seconds Seconds Seconds Charges Type Number Number Name Used Left Idle Units/Currency -------------------------------------------------------------------------------- Out 8114 kevin 120 1 118 0 -------------------------------------------------------------------------------- krimson# *Mar 4 15:29:41.738: BR0:1 DDR: idle timeout *Mar 4 15:29:41.742: BR0 DDR: has total 0 call(s), dial_out 0, dial_in 0 *Mar 4 15:29:41.746: BR0:1 PPP: Treating connection as a callout *Mar 4 15:29:41.750: %DIALER-6-UNBIND: Interface BR0:1 unbound from profile Di0 *Mar 4 15:29:41.754: BR0:1 DDR: disconnecting call *Mar 4 15:29:41.758: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 8114 kevin, call lasted 121 seconds *Mar 4 15:29:41.774: ISDN BR0: TX -> DISCONNECT pd = 8 callref = 0x09 *Mar 4 15:29:41.782: Cause i = 0x8090 - Normal call clearing *Mar 4 15:29:41.790: Di0 IPCP: Remove route to 10.9.9.2 *Mar 4 15:29:41.862: ISDN BR0: RX <- RELEASE pd = 8 callref = 0x89 *Mar 4 15:29:41.886: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down *Mar 4 15:29:41.894: BR0:1 IPCP: State is Closed *Mar 4 15:29:41.894: BR0:1 PPP: Phase is TERMINATING [0 sess, 0 load] *Mar 4 15:29:41.898: BR0:1 LCP: State is Closed *Mar 4 15:29:41.898: BR0:1 PPP: Phase is DOWN [0 sess, 0 load] *Mar 4 15:29:41.902: BR0:1 DDR: disconnecting call *Mar 4 15:29:41.910: ISDN BR0: TX -> RELEASE_COMP pd = 8 callref = 0x09 *Mar 4 15:29:42.886: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down
O estado inicial agora é restaurado.
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 10.48.74.1 to network 0.0.0.0 10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks C 10.1.2.0/24 is directly connected, Serial0 S 10.8.8.0/24 [1/0] via 10.1.2.2 C 10.9.9.0/24 is directly connected, Dialer0 C 10.7.7.0/24 is directly connected, Loopback0 C 10.48.74.0/23 is directly connected, Ethernet0 S* 0.0.0.0/0 [254/0] via 10.48.74.1
Revisão | Data de publicação | Comentários |
---|---|---|
1.0 |
04-Feb-2010 |
Versão inicial |