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至顶网网络频道PPP认证、DDR和Multilink

PPP认证、DDR和Multilink

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实验要求配置R1和R2,实现从10.1.1.0/24网段到10.1.2.0/24网段的连通,同时提供拨号连接的安全性,并使用相应命令实现R1和R2之间的128kbit/s的连接带宽。

作者:中国IT实验室 2007年9月16日

关键字: 路由协议 EIGRP igrp SNMP CISCO 网络协议

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  在本节的实验中,将对PPP认证、DDR和Multilink进行配置,更深入地了解ISDN和拨号网络的配置技能。

  

  1.实验目的

  

  通过本实验,读者可以掌握以下技能:

  配置PPP CHAP认证;

  配置dialer map;

  配置DDR

  配置Multilink;

  查看和监测有关信息。

  

  2.设备需求

  

  本实验的设备需求与实验1完全相同,请参见实验1的相关内容。

  

  3.拓扑结构及配置说明

  

  本实验的拓扑结构如图7-2所示,R1和R2路由器分别连接1条ISDN BRI线路。

  为达到配置DDR的目的,在R1和R2上分别创建1个回送接口(L0)。

  各路由器BRI接口、L0接口的IP地址和所连接线路的ISDN号码见图7-2中的标注。

  

  实验要求配置R1和R2,实现从10.1.1.0/24网段到10.1.2.0/24网段的连通,同时提供拨号连接的安全性,并使用相应命令实现R1和R2之间的128kbit/s的连接带宽。

  

  4.实验配置及监测结果

  

  实验中综合使用了DDR、PPP认证和PPP Multilink技术,让我们来看如何配置路由器以满足实验的要求。

  配置清单7-2是R1和R2的具体配置。

  

  配置清单7-2配置DDR、PPP认证和ppp Multilink

  

  第1段:R1的配置清单

  R1#sh run

  Building configuration...

  

  Current configuration : 2752 bytes

  !

  version 12.1

  service timestamps debug uptime

  service timestamps log uptime

  no service password-encryption

  !

  hostname R1

  username R2 password 0 cisco

  !

  ip subnet-zero

  no ip domain-lookup

  isdn switch-type basic-iietS

  !

  interface Loopback0

   ip address 10.1.1.1255.255.255.0

  

  interface BRIO

   ip address 192.168.1.1255.255.255.0

   encapsuSation ppp

   dialer idle-timeout 300

   dialer map ip 192.168.1.2 name R2 broadcast 80000002

   dialer load-threshold 128

   dialer-group 1

   no cdp enable

   ppp authentication chap

   PPP multilink

  !

  ip classless

  ip route 10.1.2.0 255.255.255.0 192.168.1.2

  !

  dialer-list 1 protocol ip permit

  line con 0

   transport input none

  line aux 0

   transport input all

  line vty 0 4

   login

  !

  end

  

  第2段:R2的配置清单

  R2#sh run

  Building configuration...

  

  Current configuration : 1086 bytes

  !

  version 12.1

  service timestamps debug uptime

  service timestamps log uptime

  no service password-encryption

  service udp-small-servers

  service tcp-small-servers

  !

  hostname R2

  !

  useriiame R1 password 0 cisco

  !

  ip subnet-zero

  no ip finger

  !

  isdn switch-type basic"net3

  !

  interface Loopback0

   ip address 10.1.2.1255.255.255.0

  !

  interface BRIO

   ip address 192.168.1.2 255.255.255.0

   encapsiiSation ppp

   dialer idle-timeout 300

   dialer map ip 192.168.1.1 name Rl broadcast 80000001

   dialer load-threshold 128

   dialer-group 1

   no cdp enable

   ppp authentication chap

   ppp multilink

  !

  ip classless

  ip route 10.1.1.0 255.255.255.0 192.168.1.1

  !

  dialer-list 1 protocol ip permit

  !

  line con 0

   transport input none

  line aux 0

   transport input all

  line vty 0 4

   login

  !

  end

  第3段:监测配置结果

  R1#debug ppp authentication

  PPP authentication debugging is on

  R1#ping 10.1.2.1

  

  Type escape sequence to abort.

  Sending 5, 100-byte ICMP Echos to 10.1.2.1, timeout is 2 seconds:

  03:17:15: %LINK-3-UPDOWN: Interface BRIO:1, changed state to up

  03:17:15: BRO:1 PPP: Treating connection as a callout

  03:17:15: %ISDN-6-CONNECT: Interface BRIO:1 is now connected to 80000002

  03:17:17:BRIO:1 CHAP:O CHALLENGE id 5 len 23 from"R1"

  03:17:17:BRIO:1 CHAP:I CHALLENGE id 2 len 23 from"R2"

  03:17:17:BRIO:1 CHAP:O RESPONSE id 2 len 23 from"R1"

  03:17:17:BRIO:1 CHAP:I SUCCESS id 2 len 4

  03:17:17:BRIO:1 CHAP:I RESPONSE id 5 len 23 from"R2"

  03:17:17:BRIO:1 CHAP:O SUCCESS id 5 len 4

  Success rate is 60 percent (3/5), round-trip min/avg/max == 36/37/40 ms

  03:17:18: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRIO:1, changed state to up

  R1#ping 10.1.2.1

  

  Type escape sequence to abort.

  Sending 5, 100-byte ICMP Echos to 10.1.2.1, timeout is 2 seconds:

  !!!!!

  Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms

  R1#sh dialer map

  R1#debug isdn q921

  ISDN Q921 packets debugging is on

  03:22:38:ISDN BRO:RX<- RRp sapi=0 tei=66 nr=0

  03:22:38:ISDN BRO:TX<- RRf sapi=0 tei=66 nr=0

  03:22:38:ISDN BRO:RX<- RRp sapi=0 tei=70 nr=0

  03:22:38:ISDN BRO:RX<- RRf sapi=0 tei=70 nr=0

  03:22:48: ISDN BRO:TX-> RRpsapi=O tei=66 nr=0

  03:22:48: ISDN BRO: RX <- RRp sapi=0 tei=66 nr=0

  03:22:48: ISDN BRO:TX-> RRfsapi=0 tei=66 nr=0

  03:22:48: ISDN BRO: RX<- RRfsapi=0 tei=66 nr=0

  03:22:48: ISDN BRO: RX <- RRp sapi=0 tei=70 nr=0

  03:22:48: ISDN BRO: RX <- RRf sapi=0 tei=70 nr=0

  R1#debug isdn q931

  ISDN Q931 packets debugging is on

  R1#ping 10.1.2.1

  Type escape sequence to abort.

  Sending 5, 100-byte ICMP Echos to 10.1.2.1, timeout is 2 seconds:

  03:24:33: ISDN BRO: TX -> SETUP pd = 8 callref = 0x04

  03:24:33:   Bearer Capability i=0x8890

  03:24:33:   Channel ID i=0x83

  03:24:33: ISDN BRO: RX <- SETUP_ACK pd=8 callref=0x84

  03:24:33:   Channel ID i=0x89

  03:24:33: ISDN BRO: RX <- CALL_PROC pd=8 callref=0x84

  03:24:33: ISDN   RX <- SETUP pd=8 callref=0x01

  03:24:33: %LINK-3-UPDOWN: Interface BRIO: 1, changed state to up

  03:24:33: %ISDN-6-CONNECT: Interface BRIO:2 is now connected to 80000002

  03:24:34: ISDN BRO: RX<- RELEASE pd=8 callref=0x01

  03:24:34:   Cause i=Ox829A-Non-selected user clearing

  03:24:34: ISDN BRO: TX-> RELEASE_COMP pd=8 callref=0x81

  03:24:34: %ISDN-6-CONNECT: Interface BRIO: 1 is now connected to 80000002

  03:24:34: ISDN BRO: RX <- RELEASE_COMP pd=8 callref =OxO1!!!

  Success rate is 60 percent (3/5), round-trip min/avg/max == 36/38/40 ms

  R1#

  03:24:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRIO: 1, changed state to up

  03:24:38: ISDN BRO: TX -> SETUP pd == 8 callref = 0x05

  03:24:38:   Bearer Capability i=0x8890

  03:24:38:   Channel ID i=0x83

  

  R2#ping 10.1.1.1

  

  Type escape sequence to abort.

  Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:

  !!!!!

  Success rate is 100 percent (5/5), round-trip min/avg/max = 40/114/412 ms

  我们采用把R1和R2的同类配置同时列出并讲解的方法,以方便读者更好地理解配置。实验1中己经配置过的项目不再是我们讲解的重点。

  (1)配置用户名和口令。

  R1:USernam R2 password 0 Cisco

  R2:USemame R1 password 0 cisco

  在R1上定义的用户名为R2,即拨号链路对端路由器名(由hostname所

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