拨号和接入 : 异步连接

从 Microsoft Windows 客户端发起的异步多链路 PPP 拨号

2016 年 10 月 27 日 - 机器翻译
其他版本: PDFpdf | 英语 (2015 年 8 月 22 日) | 反馈


目录


简介

在此异步多链路PPP配置中,远程拨入用户用Microsoft Windows 95/98增加接入速率联机的仅供PC使用多个调制解调器。异步多链路PPP可能也配置与其他客户端,例如Linux和麦金塔电脑,与适当的客户端PPP软件。路由器的配置多链路PPP的对立于客户端PC平台。

先决条件

要求

本文档没有任何特定的要求。

使用的组件

本文档中的信息基于以下软件和硬件版本。

  • 运行Cisco IOS�软件版本12.07(T)的Cisco AS5300。

本文档中的信息都是基于特定实验室环境中的设备创建的。本文档中使用的所有设备最初均采用原始(默认)配置。如果您是在真实网络上操作,请确保您在使用任何命令前已经了解其潜在影响。

规则

有关文档规则的详细信息,请参阅 Cisco 技术提示规则

背景理论

多链路PPP (MPPP)允许设备发送数据到在多点的同一个目的地通过实现虚链路指向数据链路。MPPP连接有最大带宽相等与链路成员的带宽的总和。MPPP可以配置为复用的链路,例如ISDN和帧中继,或者为多条异步线路。

异步多链路PPP比那可以用于以更快的速度联络远程客户端可用通过单个模拟连接。在异步MPPP,远程客户端使用多个调制解调器并且多条电话线,对拨入到中央路由器并且访问网络。由于多条电话线比ISDN基本速率接口(BRI)服务经常便宜,异步MPPP提供一有效方式增加远程用户的连接速度,当控制开销时。异步MPPP也是获取不可能由ISDN服务的远程区域的更高的接入速率有效方式。

异步MPPP一起捆绑对接入服务器的单独的调制解调器连接。在每对等体的PPP软件分段数据包并且传达片段给另一侧通过多个模拟连接。接收端根据在他们内被嵌入的PPP数据采集从独立的连接的数据包,并且,重新召集片段到有效数据包,因而供给一条端到端虚拟链路高带宽。异步MPPP可以配置在两路由器之间或在路由器和客户端PC之间。

虽然使用超过两调制解调器从客户端PC的多链路连接是可能的,从在PC的能否定所有额外的带宽被获取的数据包分段和重组的结果的开销。

配置

本部分提供有关如何配置本文档所述功能的信息。

注意: 要查找本文档所用命令的其他信息,请使用命令查找工具仅限注册用户)。

网络图

本文档使用此图中所示的网络设置:

/image/gif/paws/9553/async_multilink.gif

NAS 配置

在此配置中,有T1主速率接口连接的一个AS5300服务器使用作为模拟用户拨入网络接入服务器(NAS)。由于在此的其他T1控制器都NAS没有配置,此接入服务器完全使用异步拨号。此AS5300配置使用虚拟模板克隆呼入呼叫的虚拟访问接口。多链路PPP捆绑复制其从虚拟模板定义的接口参数。

一些基本认证,授权和核算(AAA)命令包括作为最佳实践方法示例。用户名和密码拨入用户的在路由器配置。IP地址分配到拨入用户从地址池提供。

Cisco AS5300
bobslake-nas-01#show running-config
Building configuration...

Current configuration:
!
! Last configuration change at 16:01:01 UTC Wed Jun 28 2000
! NVRAM config last updated at 15:30:28 UTC Wed Jun 28 2000 
!
version 12.0
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service tcp-small-servers
!
hostname bobslake-nas-01
!
logging buffered 10000 debugging
aaa new-model
aaa authentication login default local
aaa authentication ppp default if-needed local

!--- authenticate for PPP if not authenticated during login
!--- allows users with Terminal Window after Dial to initiate PPP!

username admin password <deleted> 
username charlie password <deleted> 
spe 1/0 1/7
 firmware location system:/ucode/mica_port_firmware
!
resource-pool disable
!
ip subnet-zero
no ip source-route
ip domain-name the.net
!
multilink virtual-template 1

!--- use virtual-template 1 for multilink connections

async-bootp dns-server 172.22.53.210
isdn switch-type primary-5ess
isdn voice-call-failure 0
!
controller T1 0
 framing esf
 clock source line primary
 linecode b8zs
 pri-group timeslots 1-24
!
controller T1 1
 framing esf
 linecode b8zs
 pri-group timeslots 1-24
!
controller T1 2
 framing esf
 linecode b8zs
 pri-group timeslots 1-24
!
controller T1 3
 framing esf
 clock source line secondary 3
 linecode b8zs
 pri-group timeslots 1-24
!
interface Loopback0
 ip address 172.21.10.10 255.255.255.255
 no ip directed-broadcast
!
interface Loopback1
 ip address 172.21.104.254 255.255.255.0

!--- summarizes addresses in address pool 
!--- Loopback 1 is in the same subnet as the address pool 

no ip directed-broadcast
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Virtual-Template1
 description Template for Multilink Users
 ip unnumbered Loopback0  
 no ip directed-broadcast
 peer default ip address pool addr-pool

!--- use IP pool called addr-pool 
!--- for incoming calls
 
ppp authentication chap

!--- authenticate using Challenge Handshake Authentication Protocol (CHAP)

 ppp multilink
!

!--- configure D channel on PRI interface Serial0:23

 description Headquarters 324-1939 active PRI line
 no ip address
 no ip directed-broadcast
 isdn switch-type primary-5ess
 isdn incoming-voice modem
 fair-queue 64 256 0
 no cdp enable
!
interface Serial1:23
 no ip address
 no ip directed-broadcast
 no logging event link-status
 no snmp trap link-status
 isdn switch-type primary-5ess
 isdn incoming-voice modem
 fair-queue 64 256 0
 no cdp enable
!
interface Serial2:23
 no ip address
 no ip directed-broadcast
 no logging event link-status
 no snmp trap link-status
 isdn switch-type primary-5ess
 isdn incoming-voice modem
 fair-queue 64 256 0
 no cdp enable
!
interface Serial3:23
 no ip address
 no ip directed-broadcast
 no logging event link-status
 no snmp trap link-status
 isdn switch-type primary-5ess
 isdn incoming-voice modem
 fair-queue 64 256 0
 no cdp enable
!
interface FastEthernet0
 ip address 172.21.101.23 255.255.255.0
 no ip directed-broadcast
 duplex auto
 speed auto
!
interface Group-Async1

!--- template to control all async interface configuration 

ip unnumbered Loopback0
 no ip directed-broadcast
 encapsulation ppp

!--- use PPP encapsulation dialer in-band

 dialer-group 5
 async mode interactive
 peer default ip address pool addr-pool

!--- use IP pool called addr-pool 
!--- for incoming calls 

 no fair-queue
 no cdp enable
 ppp authentication chap callin

!--- CHAP authenticate for dialin users only 

 ppp multilink
 group-range 1 48

!--- assign modems 1-48 to the Group-Async 1 configuration template

 router eigrp 1
 network 172.21.0.0
!
ip local pool addr-pool 172.21.104.1 172.21.104.48

!--- define IP address pool range for dialin clients 

ip classless
no ip http server
!

access-list 105 permit ip any any
dialer-list 5 protocol ip list 105
!
line con 0
 exec-timeout 0 0
 transport input none
line 1 48
 autoselect during-login

!--- permits user login prompts after dialin 

 autoselect ppp

!--- automatically launch PPP on the line




 modem InOut

!--- modems can be used to dialin and dialout
!--- InOut may be replaced by Dialin 
!--- if NAS handles only incoming calls

 transport preferred none
 transport output telnet
line aux 0
line vty 0 4
 transport preferred none
 transport input telnet
 transport output telnet
!
ntp clock-period 17180374
ntp update-calendar
ntp server 172.22.255.1 prefer
end

bobslake-nas-01#

配置 Windows 9x 客户端

以下步骤是在配置您的Windows 9x客户端的概述MPPP的。如果有leavingcisco.com 困难,参考Microsoft网站

为了配置MPPP的Microsoft Windows 9x客户端,请确保您安排拨号网络版本1.3或以上安装。

去到Microsoft网站leavingcisco.com 欲知更多信息和下载拨号网络(DUN)新版本。

  1. 分开连接并且配置每个调制解调器。

    从Windows控制面板,请使用" Add New Hardware "程序添加调制解调器给客户端。如果有添加调制解调器的麻烦,与您的PC供应商或Microsoft联系故障排除程序的。验证每个调制解调器正确地连接和由操作系统认可。您可以要使用终端仿真器验证您的调制解调器适当地运作。

  2. 创建新的拨号连接。

    在Windows请双击“我的计算机”图标并且导航对“拨号联网”。其次,双击“Make New Connection”。使用主调制解调器,跟随方向创建拨号连接。多链路功能配置的以后。通过拨号测试连接对您的服务提供商。

  3. 添加多链路功能到您的拨号连接。

    双击“我的计算机”图标并且导航对“拨号联网”。用鼠标右键单击设置的连接图标。从出现的菜单,请选择"Properties."

    点击“多链路”选项卡,选择"Use additional devices,"并且点击“添加”按钮。选择从下拉菜单的一个另外的调制解调器并且输入接入服务器的仅七个位电话号码或者接受显示的号码。请勿包括区域代码,当配置附加设备时,即使它是长途呼叫。连接自动地使用配置的区域代码第一个调制解调器。两次点击"OK"完成设置。

    这是Windows多链路配置的一些屏幕截图:

    /image/gif/paws/9553/win95_mppp_1.gif

    win95_mppp_2.gif

  4. 首次对接入服务器的调制解调器连接。

    双击创建的拨号连接图标。输入在路由器配置的用户名和密码,然后点击" Connect "按钮。拨号网络将拨号为主调制解调器配置的号码指定为连接。当第一个连接设立时,拨号网络拨号使用在Additional Devices列表指定的另外的调制解调器。

    当所有连接被建立时,您能或者通过双击查看关于链路的状态信息在任务栏显示的“通信计算机”图标,或者您可以断开连接。点击" Details "验证连接使用多个设备。当您选择在列表框时的一个设备,挂起或恢复按钮出现。如果挂起按钮出现,设备当前是在使用中和“捆绑”到多链路连接。单击在“挂起”按钮断开该线路并且从捆绑连接删除线路。如果“恢复”按钮出现,请点击它拨号该连接和添加该线路到套件。您能动态地暂停和恢复多链路,无需切连接。

验证

当前没有可用于此配置的验证过程。

本部分所提供的信息可用于确认您的配置是否正常工作。

输出解释器工具支持某些 show 命令(只限于注册用户),通过它可以查看 show 命令输出的分析。

  • show ppp multilink - 显示处于启用状态下的多链路捆绑的信息。应使用本命令来检查多链路连接。

  • show caller - 显示NAS上的个人用户以及所消耗的资源的信息。本命令显示大量连接池中的的Active的呼叫统计信息,并显示各用户的绝对时间以及空闲时间。

  • show caller user - 显示特定用户(例如使用TTY线路的用户)的参数、异步接口(机架/插槽/端口)、DS0信道编号、调制解调器编号、所分配的IP地址、PPP与PPP捆绑参数等等。

在验证和排除故障MPPP连接的协助,参考这些建议:

  • 保证前缀,例如使用9在拨号外线前,在客户端PC正确地配置。如果这没有适当地配置,您将听到占线信号,当编号启动拨号。

  • 创建每个调制解调器的独立的DUN客户端并且验证您有全连接对您的服务提供商。在继续进行分开请使用每个调制解调器排除故障前您的多链路连接。

  • 请使用一部终端仿真器连接到调制解调器。使用atdt命令,拨号NAS的编号。例如,在超级终端回车atdt 55511111。验证调制解调器正确地拨号并且连接对NAS。如果调制解调器不连接,请排除故障您的调制解调器。请参阅在Microsoft网站的使用的leavingcisco.com 基本AT调制解调器命令文档关于故障排除客户端调制解调器的更多信息。

  • 如果您的主要连接正确连接,但是第二拨号连接给占线信号,请验证另外的调制解调器的电话号码在DUN正确地配置。切记,区域代码不应该添加到另外的设备的配置。参考在上面配置的Windows 9x客户端部分的配置步骤。

show 和 debug 输出示例

这是一些显示和从AS5300的debug输出。调试的部分为简要起见删除。注意在输出和备注中的粗体部分。

注意呼叫方在Async5和Async6连接在验证之后。临时IP地址提供给从地址池的呼叫方。呼叫然后虚拟化或附加对一个现有虚拟捆绑。这是因为接入服务器需要知道谁呼叫方是确定他们是否属于一个已建立虚拟捆绑。一旦呼叫方附加对套件,临时IP地址删除,并且呼叫方使用虚拟捆绑的IP地址。

bobslake-nas-01#
bobslake-nas-01#show ppp multilink 

Virtual-Access1, bundle name is charlie
  0 lost fragments, 0 reordered, 0 unassigned, sequence 0x29/0x17 rcvd/sent
  0 discarded, 0 lost received, 1/255 load
  Member links: 2 (max not set, min not set)
    Async5
    Async6


!--- Note that the bundle is using Async line 5 and 6 for multilink. 

bobslake-nas-01#show caller 
                                                Active    Idle
  Line         User               Service       Time      Time
  con 0        admin              Host connect  1w4d      16:50:19  
  tty 5        charlie             Async         00:04:34  00:01:54  
  tty 6        charlie             Async         00:02:00  00:00:57  
  vty 1        admin              VTY           00:13:43  00:00:00  
  As5          charlie             PPP           00:04:25  00:00:00  
  As6          charlie             PPP           00:01:53  00:00:00  
  Vi1          charlie             PPP   Bundle  00:04:25  00:00:57  


!--- User charlie has two async lines, two tty, 
!--- and one virtual interface bundle.

bobslake-nas-01#show caller user charlie

  User: charlie, line tty 5, service Async

!--- shows hardware level settings for user charlie (first connection)

        Active time 00:04:43, Idle time 00:00:06
  Timeouts:            Absolute  Idle      Idle
                                 Session   Exec
      Limits:          -         -         00:10:00  
      Disconnect in:   -         -         -         
  TTY: Line 5, running PPP on As5

!--- user charlie is using tty 5

  DS0: (slot/unit/channel)=0/0/0  Line: Baud rate (TX/RX) is 115200/115200, 
no parity, 1 stopbits, 8 databits
  Status: Ready, Active, No Exit Banner, Async Interface Active
          HW PPP Support Active
  Capabilities: Hardware Flowcontrol In, Hardware Flowcontrol Out
                Modem Callout, Modem RI is CD, 
                Line usable as async interface, Integrated Modem
  Modem State: Ready

  User: charlie, line tty 6, service Async


!--- shows hardware level settings for user charlie (second connection)

        Active time 00:02:09, Idle time 00:01:06
  Timeouts:            Absolute  Idle      Idle
                                 Session   Exec
      Limits:          -         -         00:10:00  
      Disconnect in:   -         -         -         
  TTY: Line 6, running PPP on As6

!--- user charlie is using tty 6

  DS0: (slot/unit/channel)=0/0/1
  Line: Baud rate (TX/RX) is 115200/115200, no parity, 1 stopbits, 8 databits
  Status: Ready, Active, No Exit Banner, Async Interface Active
          HW PPP Support Active
  Capabilities: Hardware Flowcontrol In, Hardware Flowcontrol Out
                Modem Callout, Modem RI is CD, 
                Line usable as async interface, Integrated Modem
  Modem State: Ready

  User: charlie, line As5, service PPP

!--- PPP setting for user charlie (first connection).

        Active time 00:04:34, Idle time 00:00:00
  Timeouts:            Absolute  Idle
      Limits:          -         -         
      Disconnect in:   -         -         
  PPP: LCP Open, multilink Open, CHAP (<- AAA)

!--- MPPP state is open.

  Dialer: Connected, inbound
          Type is IN-BAND ASYNC, group Async5
  IP: Local 172.21.10.10
  Bundle: Member of charlie, last input 00:00:00
  Counts: 54 packets input, 4110 bytes, 0 no buffer
          1 input errors, 1 CRC, 0 frame, 0 overrun
          73 packets output, 4150 bytes, 0 underruns
          0 output errors, 0 collisions, 0 interface resets

!--- Packets are passing through the connection.

  User: charlie, line As6, service PPP

!--- PPP setting for user charlie (second connection).

        Active time 00:02:02, Idle time 00:00:00
  Timeouts:            Absolute  Idle
      Limits:          -         -         
      Disconnect in:   -         -         
  PPP: LCP Open, multilink Open, CHAP (<- AAA)

!--- MPPP state is Open.

  Dialer: Connected, inbound
          Type is IN-BAND ASYNC, group Async6
  IP: Local 172.21.10.10
  Bundle: Member of charlie, last input 00:00:00
  Counts: 6 packets input, 462 bytes, 0 no buffer
          1 input errors, 1 CRC, 0 frame, 0 overrun
          20 packets output, 1129 bytes, 0 underruns
          0 output errors, 0 collisions, 0 interface resets

!--- Packets are passing through the connection.

    
User: charlie, line Vi1, service PPP Bundle


!--- Bundle information for user charlie

        Active time 00:04:34, Idle time 00:00:06
  Timeouts:            Absolute  Idle
      Limits:          -         -         
      Disconnect in:   -         -         
  PPP: LCP Open, multilink Open, IPCP
  IP: Local 172.21.104.254, remote 172.21.104.2

!--- Remote IP address is obtained from IP pool.

  Counts: 50 packets input, 4034 bytes, 0 no buffer
          0 input errors, 0 CRC, 0 frame, 0 overrun
          80 packets output, 8750 bytes, 0 underruns
          0 output errors, 0 collisions, 0 interface resets

 

bobslake-nas-01#debug vtemplate
Virtual Template debugging is on
bobslake-nas-01#debug ppp multilink events 
Multilink events debugging is on
bobslake-nas-01#debug ppp negotiation 
PPP protocol negotiation debugging is on
bobslake-nas-01#debug ppp authentication 
PPP authentication debugging is on
bobslake-nas-01#debug ppp error 
PPP protocol errors debugging is on
bobslake-nas-01#debug modem
Modem control/process activation debugging is on
bobslake-nas-01#show debug
General OS:
  Modem control/process activation debugging is on
PPP:
  PPP authentication debugging is on
  PPP protocol errors debugging is on
  PPP protocol negotiation debugging is on
  Multilink events debugging is on
VTEMPLATE:
  Virtual Template debugging is on

bobslake-nas-01#
Jun 28 15:41:46.281 UTC: TTY5: DSR came up
Jun 28 15:41:46.281 UTC: tty5: Modem: IDLE->(unknown)

!--- Modem responds to first dialin connection.

Jun 28 15:41:46.281 UTC: TTY5: EXEC creation
...
Jun 28 15:41:48.537 UTC: TTY5 Autoselect cmd:  ppp negotiate
Jun 28 15:41:48.537 UTC: TTY5: EXEC creation
...
Jun 28 15:41:48.545 UTC: As5 IPCP: Install route to 172.21.104.4

!--- IP address for first link obtained from address pool.
!--- Route will be removed when link is virtualized later. 

Jun 28 15:41:50.541 UTC: As5 PPP: Treating connection as a callin
Jun 28 15:41:50.541 UTC: As5 PPP: Phase is ESTABLISHING, Passive Open
Jun 28 15:41:50.541 UTC: As5 LCP: State is Listen

!--- LCP negotiation begins.

Jun 28 15:41:51.549 UTC: As5 LCP: I CONFREQ [Listen] id 3 len 46
...
Jun 28 15:41:51.549 UTC: Unthrottle 5
Jun 28 15:41:51.549 UTC: As5 LCP: O CONFREQ [Listen] id 1 len 47
...
Jun 28 15:41:51.549 UTC: As5 LCP: O CONFREJ [Listen] id 3 len 7
...
Jun 28 15:41:53.549 UTC: As5 LCP: O CONFREQ [REQsent] id 2 len 47
Jun 28 15:41:53.549 UTC: As5 LCP:    ACCM 0x000A0000 (0x0206000A0000)
Jun 28 15:41:53.549 UTC: As5 LCP:    AuthProto CHAP (0x0305C22305)
Jun 28 15:41:53.549 UTC: As5 LCP:    MagicNumber 0x56E3C73E (0x050656E3C73E)
Jun 28 15:41:53.549 UTC: As5 LCP:    PFC (0x0702)
Jun 28 15:41:53.549 UTC: As5 LCP:    ACFC (0x0802)
Jun 28 15:41:53.549 UTC: As5 LCP:    MRRU 1524 (0x110405F4)

!--- Max-Receive-Reconstructed-Unit:Maximum packet size 
!--- that the peer will reconstruct.
!--- Both sides must agree on the packet size (MRRU).

Jun 28 15:41:53.549 UTC: As5 LCP:    EndpointDisc 1 Local
Jun 28 15:41:53.549 UTC: As5 LCP:     (0x131201626F62736C616B652D6E61732D)
Jun 28 15:41:53.549 UTC: As5 LCP:     (0x3031)
Jun 28 15:41:53.789 UTC: As5 LCP: I CONFACK [REQsent] id 2 len 47
Jun 28 15:41:53.789 UTC: As5 LCP:    ACCM 0x000A0000 (0x0206000A0000)
Jun 28 15:41:53.789 UTC: As5 LCP:    AuthProto CHAP (0x0305C22305)
Jun 28 15:41:53.789 UTC: As5 LCP:    MagicNumber 0x56E3C73E (0x050656E3C73E)
Jun 28 15:41:53.789 UTC: As5 LCP:    PFC (0x0702)
Jun 28 15:41:53.789 UTC: As5 LCP:    ACFC (0x0802)
Jun 28 15:41:53.789 UTC: As5 LCP:    MRRU 1524 (0x110405F4)

!--- Max-Receive-Reconstructed-Unit:Maximum packet size that 
!--- the peer will reconstruct.

Jun 28 15:41:53.789 UTC: As5 LCP:    EndpointDisc 1 Local
Jun 28 15:41:53.789 UTC: As5 LCP:     (0x131201626F62736C616B652D6E61732D)
Jun 28 15:41:53.789 UTC: As5 LCP:     (0x3031)Jun 28 15:41:54.541 UTC: 
As5 LCP: I CONFREQ [ACKrcvd] id 4 len 46
...
Jun 28 15:41:54.541 UTC: As5 LCP: O CONFREJ [ACKrcvd] id 4 len 7
...
Jun 28 15:41:54.717 UTC: As5 LCP: I CONFREQ [ACKrcvd] id 5 len 43
...
Jun 28 15:41:54.717 UTC: As5 LCP: O CONFACK [ACKrcvd] id 5 len 43
...
Jun 28 15:41:54.721 UTC: As5 LCP: State is Open

!--- LCP negotiation is complete.

Jun 28 15:41:54.721 UTC: As5 PPP: Phase is AUTHENTICATING, by this end

!--- CHAP authentication begins.

Jun 28 15:41:54.721 UTC: As5 CHAP: O CHALLENGE id 1 len 36 from "bobslake-nas-01"
Jun 28 15:41:54.909 UTC: As5 CHAP: I RESPONSE id 1 len 27 from "charlie"
Jun 28 15:41:54.909 UTC: As5 CHAP: O SUCCESS id 1 len 4

!--- CHAP authentication is successful.

Jun 28 15:41:54.909 UTC: As5 MLP: Multilink up event pending
Jun 28 15:41:54.913 UTC: As5 PPP: Phase is VIRTUALIZED

!--- Call is virtualized after authentication.

Jun 28 15:41:54.913 UTC: Vi1 VTEMPLATE: Reuse Vi1, recycle queue size 0
Jun 28 15:41:54.913 UTC: Vi1 VTEMPLATE: Hardware address 0010.7b4d.7046
Jun 28 15:41:54.913 UTC: Vi1 PPP: Phase is DOWN, Setup
Jun 28 15:41:54.913 UTC: Vi1 MLP: VP: Clone from Vtemplate 1 block=1
Jun 28 15:41:54.913 UTC: Vi1 VTEMPLATE: Has a new cloneblk vtemplate
Jun 28 15:41:54.913 UTC: Vi1 VTEMPLATE: ************* CLONE VACCESS1 ***********
Jun 28 15:41:54.913 UTC: Vi1 VTEMPLATE: Clone from Virtual-Template1

!--- Cloning from Virtual-Template.

interface Virtual-Access1
default ip address
no ip address
encap ppp
description Template for Multilink Users
ip unnumbered Loopback0
no ip directed-broadcast
no logging event link-status
no snmp trap link-status
peer default ip address pool addr-pool
ppp authentication chap
ppp multilink
ip unnum loop 1
end
Jun 28 15:41:55.005 UTC: Vi1 PPP: Treating connection as a dedicated line
Jun 28 15:41:55.005 UTC: Vi1 PPP: Phase is ESTABLISHING, Active Open
Jun 28 15:41:55.005 UTC: Vi1 LCP: O CONFREQ [Closed] id 1 len 37
...
Jun 28 15:41:55.009 UTC: Vi1 PPP: Phase is UP
Jun 28 15:41:55.009 UTC: Vi1 IPCP: O CONFREQ [Closed] id 1 len 10
Jun 28 15:41:55.009 UTC: Vi1 IPCP:    Address 172.21.104.254 (0x0306AC1568FE)
Jun 28 15:41:55.009 UTC: As5 MLP: charlie, multilink up, first link

!--- First link in multilink bundle for user charlie is up.

Jun 28 15:41:55.009 UTC: As5 IPCP: Remove route to 172.21.104.4

!--- Temporary route to first link removed since link is virtualized.

Jun 28 15:41:55.069 UTC: Vi1 IPCP: I CONFREQ [REQsent] id 1 len 40
...
Jun 28 15:41:55.069 UTC: Vi1 IPCP: Pool returned 172.21.104.2

!--- IP address for virtual bundle obtained from address pool.

Jun 28 15:41:55.069 UTC: Vi1 IPCP: O CONFREJ [REQsent] id 1 len 22
...
Jun 28 15:41:55.085 UTC: Vi1 CCP: I CONFREQ [Not negotiated] id 1 len 15
Jun 28 15:41:55.085 UTC: Vi1 CCP:    MS-PPC supported bits 0x00000001 (0x120600)
...
Jun 28 15:41:55.181 UTC: Vi1 IPCP: I CONFACK [REQsent] id 1 len 10
Jun 28 15:41:55.181 UTC: Vi1 IPCP:    Address 172.21.104.254 (0x0306AC1568FE)
Jun 28 15:41:57.009 UTC: Vi1 IPCP: TIMEout: State ACKrcvd
Jun 28 15:41:57.009 UTC: Vi1 IPCP: O CONFREQ [ACKrcvd] id 2 len 10
Jun 28 15:41:57.009 UTC: Vi1 IPCP:    Address 172.21.104.254 (0x0306AC1568FE)
Jun 28 15:41:59.009 UTC: Vi1 IPCP: TIMEout: State REQsent
Jun 28 15:41:59.009 UTC: Vi1 IPCP: O CONFREQ [REQsent] id 3 len 10
Jun 28 15:41:59.009 UTC: Vi1 IPCP:    Address 172.21.104.254 (0x0306AC1568FE)
Jun 28 15:41:59.617 UTC: Vi1 IPCP: I CONFREQ [REQsent] id 2 len 34
...
Jun 28 15:41:59.617 UTC: Vi1 IPCP: O CONFREJ [REQsent] id 2 len 16
...
Jun 28 15:41:59.633 UTC: Vi1 PPP: Replace IPCP code 2 id 3 with id 3
Jun 28 15:41:59.633 UTC: Vi1 IPCP: I CONFACK [REQsent] id 3 len 10
Jun 28 15:41:59.633 UTC: Vi1 IPCP:    Address 172.21.104.254 (0x0306AC1568FE)
Jun 28 15:41:59.777 UTC: Vi1 IPCP: I CONFREQ [ACKrcvd] id 3 len 22
...
Jun 28 15:41:59.777 UTC: Vi1 IPCP: O CONFNAK [ACKrcvd] id 3 len 22
...
Jun 28 15:41:59.937 UTC: Vi1 IPCP: I CONFREQ [ACKrcvd] id 4 len 22
Jun 28 15:41:59.937 UTC: Vi1 IPCP:    Address 172.21.104.2 
(0x0306AC156802)

!--- IP address of virtual bundle was previously obtained from 
!--- address pool.

Jun 28 15:41:59.937 UTC: Vi1 IPCP:    PrimaryDNS 172.22.53.210 (0x8106AC1635D2)
Jun 28 15:41:59.937 UTC: Vi1 IPCP:    SecondaryDNS 171.68.10.70 (0x8306AB440A46)
Jun 28 15:41:59.937 UTC: Vi1 IPCP: O CONFACK [ACKrcvd] id 4 len 22
Jun 28 15:41:59.937 UTC: Vi1 IPCP:    Address 172.21.104.2 (0x0306AC156802)
Jun 28 15:41:59.937 UTC: Vi1 IPCP:    PrimaryDNS 172.22.53.210 (0x8106AC1635D2)
Jun 28 15:41:59.937 UTC: Vi1 IPCP:    SecondaryDNS 171.68.10.70 (0x8306AB440A46)
Jun 28 15:41:59.937 UTC: Vi1 IPCP: State is Open
Jun 28 15:41:59.941 UTC: Vi1 IPCP: Install route to 172.21.104.2

!--- Add route for virtual bundle to routing table.

Jun 28 15:42:44.383 UTC: TTY51: timer type 1 expired
Jun 28 15:42:44.383 UTC: TTY51:  Exec timer (continued)

!--- Modem comes up for multilink connection.

Jun 28 15:44:20.385 UTC: TTY6: DSR came up

!--- Async 6 is used for second connection.

Jun 28 15:44:20.385 UTC: tty6: Modem: IDLE->(unknown)
Jun 28 15:44:20.385 UTC: TTY6: EXEC creation
...
Jun 28 15:44:20.529 UTC: TTY6 Autoselect cmd:  ppp negotiate
Jun 28 15:44:20.529 UTC: TTY6: EXEC creation
...Jun 28 15:44:20.661 UTC: As6 IPCP: Install route to 172.21.104.5

!--- IP address for second link is obtained from the pool.
!--- Route will be removed when link is added to the MPPP bundle.

Jun 28 15:44:22.661 UTC: As6 PPP: Treating connection as a callin
Jun 28 15:44:22.661 UTC: As6 PPP: Phase is ESTABLISHING, Passive Open

!--- LCP negotiation begins.

Jun 28 15:44:22.661 UTC: As6 LCP: State is Listen
Jun 28 15:44:23.521 UTC: As6 LCP: I CONFREQ [Listen] id 2 len 46
...
Jun 28 15:44:23.525 UTC: Unthrottle 6
Jun 28 15:44:23.525 UTC: As6 LCP: O CONFREQ [Listen] id 1 len 47
...
Jun 28 15:44:23.525 UTC: As6 LCP: O CONFREJ [Listen] id 2 len 7
Jun 28 15:44:23.525 UTC: As6 LCP:    Callback 6  (0x0D0306)
Jun 28 15:44:25.525 UTC: As6 LCP: TIMEout: State REQsent
Jun 28 15:44:25.525 UTC: As6 LCP: O CONFREQ [REQsent] id 2 len 47
...
Jun 28 15:44:25.765 UTC: As6 LCP: I CONFACK [REQsent] id 2 len 47
...
Jun 28 15:44:26.533 UTC: As6 LCP: I CONFREQ [ACKrcvd] id 3 len 46
...
Jun 28 15:44:26.533 UTC: As6 LCP: O CONFREJ [ACKrcvd] id 3 len 7
Jun 28 15:44:26.533 UTC: As6 LCP:    Callback 6  (0x0D0306)
Jun 28 15:44:26.741 UTC: As6 LCP: I CONFREQ [ACKrcvd] id 4 len 43
...
Jun 28 15:44:26.741 UTC: As6 LCP: O CONFACK [ACKrcvd] id 4 len 43
...
Jun 28 15:44:26.741 UTC: As6 LCP: State is Open

!--- LCP negotiation is complete.
!--- CHAP authentication begins.

Jun 28 15:44:26.745 UTC: As6 PPP: Phase is AUTHENTICATING, by this end
Jun 28 15:44:26.745 UTC: As6 CHAP: O CHALLENGE id 1 len 36 from "bobslake-nas-01"
Jun 28 15:44:26.981 UTC: As6 CHAP: I RESPONSE id 1 len 27 from "charlie"
Jun 28 15:44:26.981 UTC: As6 CHAP: O SUCCESS id 1 len 4

!--- CHAP authentication is successful. 

Jun 28 15:44:26.981 UTC: As6 MLP: Multilink up event pending
Jun 28 15:44:26.981 UTC: As6 PPP: Phase is VIRTUALIZED

!--- Link is virtualized.

Jun 28 15:44:26.985 UTC: As6 MLP: charlie, multilink up

!--- Multilink connection is up.

Jun 28 15:44:26.985 UTC: As6 IPCP: Remove route to 172.21.104.5

!--- Use IP address previously assigned to the bundle 
!--- (in this case, 172.21.104.2).

bobslake-nas-01#

故障排除

本部分提供的信息可用于对配置进行故障排除。

故障排除命令

输出解释器工具支持某些 show 命令(只限于注册用户),通过它可以查看 show 命令输出的分析。

注意: 发出 debug 命令之前,请参阅关于 Debug 命令的重要信息

  • debug vtemplate -显示从一个虚拟模板被克隆到时间下来的一个虚拟访问接口的克隆信息从时间。

  • debug ppp multilink events - 显示关于影响多链路捆绑的事件的信息。

  • debug ppp negotiation -显示协商链路控制协议(LCP)、认证和网络控制协议(NCP)时的 PPP数据流量和交换的信息。成功的PPP协商将首先开放LCP状态,然后进行验证,最后进行NCP协商。

  • debug ppp authentication -显示PPP认证协议消息,包括质询握手验证协议(CHAP)信息包交换和密码认证协议交换。

  • debug ppp error -显示与PPP连接协商和运行有关的协议错误和错误统计数据。

  • debug modem - 显示接入服务器上的调制解调器线路活动情况。


相关信息


Document ID: 9553