使用RADIUS設定第2層通道通訊協定驗證

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已更新: 2009 年 5 月 14 日
文件 ID:13856

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關於此翻譯

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簡介

本文說明如何使用從RADIUS伺服器下載的通道屬性設定第2層通道通訊協定(L2TP)虛擬專用撥接網路(VPDN)情境。在本例中，L2TP訪問集中器(LAC)接收傳入連線並聯絡LAC RADIUS伺服器。RADIUS伺服器會尋找使用者網域的通道屬性(例如cisco.com)，並將通道屬性傳遞到LAC。根據這些屬性，LAC發起到L2TP網路伺服器(LNS)的隧道。 建立通道後，LNS使用自己的RADIUS伺服器對終端使用者進行身份驗證。

附註：本文檔假定NAS(LAC)已配置為常規撥號訪問。有關如何配置撥號的詳細資訊，請參閱為撥入客戶端配置基本AAA RADIUS。

有關L2TP和VPDN的詳細資訊，請參閱以下文檔：

必要條件

需求

本文件沒有特定需求。

採用元件

本文中的資訊係根據以下軟體和硬體版本：

  • 兩台Cisco 2511路由器

  • Cisco IOS®軟體版本12.0(2)。T

  • Cisco Secure ACS for UNIX、Cisco Secure ACS for Windows或Merit RADIUS

本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路正在作用，請確保您已瞭解任何指令可能造成的影響。

慣例

如需文件慣例的詳細資訊，請參閱思科技術提示慣例。

RADIUS伺服器配置

本節提供用於設定本文件中所述功能的資訊。

注意：要查詢有關本文檔中使用的命令的其他資訊，請使用命令查詢工具(僅限註冊客戶)。

網路圖表

本檔案會使用下圖中所示的網路設定。

l2tprad-1.gif

LAC RADIUS設定 — 適用於UNIX的Cisco Secure ACS

LAC RADIUS配置包括使用者「rtp.cisco.com」（客戶端使用的域）。 此使用者的密碼必須是cisco。

# ./ViewProfile -p 9900 -u rtp.cisco.com
user = rtp.cisco.com{
radius=Cisco {
check_items= {
2="cisco"
} 
reply_attributes= {
6=5
9,1="vpdn:tunnel-id=DEFGH"
9,1="vpdn:tunnel-type=l2tp"
9,1="vpdn:ip-addresses=10.31.1.9"
9,1="vpdn:l2tp-tunnel-password=ABCDE"
} 
} 
}

有關LAC上RADIUS配置的詳細資訊，請參閱第2層隧道協定中的供LAC使用的RADIUS配置部分。

LNS RADIUS配置 — Cisco Secure ACS for UNIX 

# ./ViewProfile -p 9900 -u janedoe@rtp.cisco.com
user = janedoe@rtp.cisco.com{
radius=Cisco {
check_items= {
2="rtp"
} 
reply_attributes= {
6=2
7=1
} 
} 
 
}

LAC RADIUS配置 — 適用於Windows的Cisco Secure ACS

請完成以下步驟：

  1. 在網路配置區域中，設定LAC網路訪問伺服器(NAS)身份驗證以使用RADIUS(Cisco IOS/PIX)。

  2. 為使用者「rtp.cisco.com」配置口令cisco，用於明文和CHAP。這是用於通道屬性的使用者名稱。

  3. 按一下左側導航欄中的Group Setting按鈕。選擇使用者所屬的組並按一下Edit Settings。向下滾動到IETF RADIUS部分，然後選擇Attribute 6 Service-Type作為Outbound。 .

    如果未顯示所有可選選項，請進入Interface Configuration並選中各種框，使其顯示在組區域中。

  4. 在底部的Cisco IOS/PIX RADIUS屬性部分中，選中009\001 cisco-av-pair覈取方塊，並在框中鍵入以下內容： 

    vpdn:tunnel-id=DEFGH
vpdn:tunnel-type=l2tp
vpdn:ip-addresses=10.31.1.9
vpdn:l2tp-tunnel-password=ABCDE

    有關LAC上RADIUS配置的詳細資訊，請參閱第2層隧道協定中的供LAC使用的RADIUS配置部分。

    l2tprad-2.gif

LNS RADIUS配置 — Cisco Secure ACS for Windows

請完成以下步驟：

  1. 配置使用者ID janedoe@rtp.cisco.com，並輸入任何密碼以使用plain和CHAP。

  2. 按一下左欄中的Group Setup按鈕。選擇使用者所屬的組並按一下Edit Settings。

  3. 在「Internet Engineering Task Force(IETF)RADIUS Attributes」部分，從下拉選單中選擇Service-type(attribute 6)= Framed and Framed-Protocol(attribute 7)=PPP。

    注意：還必須按一下選定屬性Service-Type和Framed-Protocol旁的復選框。

LAC RADIUS配置 — Merit RADIUS

注意：必須經常修改Livingston和Merit伺服器以支援供應商特定的av對。

rtp.cisco.com   Password = "cisco"
        Service-Type = Outbound-User,
    cisco-avpair = "vpdn:tunnel-id=DEFGH",
    cisco-avpair = "vpdn:tunnel-type=l2tp",
    cisco-avpair = "vpdn:ip-addresses=10.31.1.9",
    cisco-avpair = "vpdn:l2tp-tunnel-password=ABCDE"

有關LAC上RADIUS配置的詳細資訊，請參閱第2層隧道協定中的供LAC使用的RADIUS配置部分。

LNS RADIUS配置 — Merit RADIUS 

janedoe@rtp.cisco.com   Password = "rtp",
                Service-Type = Framed,
                Framed-Protocol = PPP

路由器配置

本檔案會使用這些設定。

LAC路由器配置 
LAC#show run
Building configuration...

Current configuration:
!
version 12.0
service timestamps debug datetime
service timestamps log uptime
no service password-encryption
!
hostname LAC
!

!--- AAA commands needed to authenticate the user and obtain !--- VPDN tunnel information.

aaa new-model
aaa authentication login default local
aaa authentication ppp default if-needed radius
aaa authorization network default radius
aaa accounting exec default start-stop radius
aaa accounting network default start-stop radius
enable secret level 7 5 $1$Dj3K$9jkyuJR6fJV2JO./Qt0lC1
enable password ww
!
username cse password 0 csecse
username john password 0 doe
ip subnet-zero
no ip domain-lookup
!
jnj00=tfdfr
vpdn enable
!

!--- VPDN tunnel authorization is based on the domain name !--- (the default is DNIS).

vpdn search-order domain 
!
!
!
interface Loopback0
 no ip address
 no ip directed-broadcast
!
interface Ethernet0
 ip address 10.31.1.6 255.255.255.0
 no ip directed-broadcast
!
interface Serial0
 no ip address
 no ip directed-broadcast
 no ip mroute-cache
 shutdown
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Async1
 ip unnumbered Ethernet0
 no ip directed-broadcast
 ip tcp header-compression passive
 encapsulation ppp
 async mode dedicated
 peer default ip address pool async
 no cdp enable
 ppp authentication chap
!
interface Group-Async1
 physical-layer async
 no ip address
 no ip directed-broadcast
!
ip local pool default 10.5.5.5 10.5.5.50
ip local pool async 10.7.1.1 10.7.1.5
ip classless
ip route 0.0.0.0 0.0.0.0 10.31.1.1
!

!--- RADIUS server host and key.

radius-server host 171.68.118.101 auth-port 1645 acct-port 1646
radius-server key cisco
!
line con 0
 transport input none
line 1
 session-timeout 20 
 exec-timeout 0 0
 password ww
 autoselect during-login
 autoselect ppp
 modem InOut
 transport preferred none
 transport output none
 stopbits 1
 speed 38400
 flowcontrol hardware
line 2 16
 modem InOut
 transport input all
 speed 38400
 flowcontrol hardware
line aux 0
line vty 0 4
 password ww
!
end

LNS路由器配置 
LNS#show run
Building configuration...

Current configuration:
!
! Last configuration change at 12:17:54 UTC Sun Feb 7 1999
!==m6knr5yui6yt6egv2wr25nfd1rsion 12.0=4rservice exec-callback
service timestamps debug datetime
service timestamps log uptime
no service password-encryption
!
hostname LNS
!
aaa new-model
aaa authentication login default local
aaa authentication ppp default radius local
aaa authorization network default radius local
aaa accounting exec default start-stop radius
aaa accounting network default start-stop radius
enable secret 5 $1$pnYM$B.FveZjZpgA3C9ZPq/cma/
enable password ww
!
username john password 0 doe

!--- User the_LNS is used to authenticate the tunnel. !--- The password used here must match the vpdn:l2tp-tunnel-password !--- configured in the LAC RADIUS server.

username the_LNS password 0 ABCDE
ip subnet-zero
!

!--- Enable VPDN on the LNS.

vpdn enable
!

!--- VPDN group for connection from the LAC.

vpdn-group 1

!--- This command specifies that the router uses !--- virtual-template 1 for tunnel-id DEFGH (which matches the tunnel-id !--- configured in the LAC RADIUS server).

 accept dialin l2tp virtual-template 1 remote DEFGH

!--- The username used to authenticate this tunnel !--- is the_LNS (configured above).

 local name the_LNS
!
interface Ethernet0
 ip address 10.31.1.9 255.255.255.0
 no ip directed-broadcast
!

!--- Virtual-template that is used for the incoming connection.

interface Virtual-Template1
 ip unnumbered Ethernet0
 no ip directed-broadcast
 peer default ip address pool default
 ppp authentication chap
!
interface Serial0
 no ip address
 no ip directed-broadcast
 no ip mroute-cache
 shutdown
 no fair-queue
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Async1
 ip unnumbered Ethernet0
 no ip directed-broadcast
 encapsulation ppp
 async mode interactive
 peer default ip address pool async
 ppp authentication chap
!
ip local pool default 10.6.1.1 10.6.1.5
ip local pool async 10.8.100.100 10.8.100.110
ip classless
ip route 0.0.0.0 0.0.0.0 10.31.1.1
!

!--- RADIUS server host and key information.

radius-server host 171.68.120.194 auth-port 1645 acct-port 1646
radius-server key cisco
!
line con 0
 transport input none
line 1
 session-timeout 20 
 exec-timeout 5 0
 password ww
 autoselect during-login
 autoselect ppp
 modem InOut
 transport input all
 escape-character BREAK
 stopbits 1
 speed 38400
 flowcontrol hardware
line 2 8
line aux 0
line vty 0 4
 password ww
!
end

驗證

本節提供的資訊可用於確認您的組態是否正常運作。

輸出直譯器工具(僅供註冊客戶使用)支援某些show命令，此工具可讓您檢視show命令輸出的分析。

  • show vpdn tunnel — 以摘要樣式格式顯示有關所有活動的第2層轉發和L2TP隧道的資訊。

  • show caller ip — 顯示您提供的IP地址的呼叫者資訊摘要。

疑難排解

本節提供的資訊可用於對組態進行疑難排解。

疑難排解指令

注意：發出debug指令之前，請先參閱有關Debug指令的重要資訊。

  • debug aaa authentication — 顯示有關AAA/TACACS+身份驗證的資訊。

  • debug aaa authorization — 顯示有關AAA/TACACS+授權的資訊。

  • debug aaa accounting — 在發生責任事件時顯示有關這些事件的資訊。此命令顯示的資訊與用於將記帳資訊傳輸到伺服器的記帳協定無關。

  • debug radius — 顯示與RADIUS關聯的詳細調試資訊。

  • debug vtemplate — 顯示虛擬訪問介面的克隆資訊，從虛擬模板克隆到呼叫結束時虛擬訪問介面關閉為止。

  • debug vpdn error — 顯示阻止PPP隧道建立的錯誤或導致已建立的隧道關閉的錯誤。

  • debug vpdn events — 顯示有關屬於正常PPP隧道建立或關閉部分的事件的消息。

  • debug vpdn l2x-errors — 顯示阻止第2層建立或阻止其正常操作的第2層協定錯誤。

  • debug vpdn l2x-events — 顯示有關屬於第2層正常PPP隧道建立或關閉的事件的消息。

  • debug vpdn l2tp-sequencing — 顯示有關L2TP的消息。

調試輸出

有關L2TP調試的詳細說明，請參閱L2TP隧道設定和拆卸。

從LAC路由器進行良好調試 

LAC#show debug
General OS:
  AAA Authentication debugging is on
  AAA Authorization debugging is on
  AAA Accounting debugging is on
VPN:
  L2X protocol events debugging is on
  L2X protocol errors debugging is on
  VPDN events debugging is on
  VPDN errors debugging is on
  L2TP data sequencing debugging is on
VTEMPLATE:
  Virtual Template debugging is on
Radius protocol debugging is on
LAC#
Feb  7 12:22:16: As1 AAA/AUTHOR/FSM: (0): 
    LCP succeeds trivially
2d18h: %LINK-3-UPDOWN: Interface Async1, 
    changed state to up
Feb  7 12:22:17: As1 VPDN: Looking for tunnel 
    -- rtp.cisco.com --
Feb  7 12:22:17: AAA: parse name=Async1 idb 
    type=10 tty=1
Feb  7 12:22:17: AAA: name=Async1 flags=0x11 
    type=4 shelf=0 slot=0 
    adapter=0 port=1 channel=0
Feb  7 12:22:17: AAA/AUTHEN: create_user (0x25BA84) 
    user='rtp.cisco.com' ruser='' port='Async1' rem_addr='' 
    authen_type=NONE service=LOGIN priv=0
Feb  7 12:22:17: AAA/AUTHOR/VPDN (6239469): 
    Port='Async1' list='default' service=NET
Feb  7 12:22:17: AAA/AUTHOR/VPDN:  (6239469) 
    user='rtp.cisco.com'
Feb  7 12:22:17: AAA/AUTHOR/VPDN:  (6239469) 
    send AV service=ppp
Feb  7 12:22:17: AAA/AUTHOR/VPDN:  (6239469) 
    send AV protocol=vpdn
Feb  7 12:22:17: AAA/AUTHOR/VPDN (6239469) 
    found list "default"
Feb  7 12:22:17: AAA/AUTHOR/VPDN:  (6239469) Method=RADIUS
Feb  7 12:22:17: RADIUS: authenticating to get author data
Feb  7 12:22:17: RADIUS: ustruct sharecount=2
Feb  7 12:22:17: RADIUS: Initial Transmit Async1 id 66 
    171.68.118.101:1645, Access-Request, len 77
Feb  7 12:22:17:         Attribute 4 6 0A1F0106
Feb  7 12:22:17:         Attribute 5 6 00000001
Feb  7 12:22:17:         Attribute 61 6 00000000
Feb  7 12:22:17:         Attribute 1 15 7274702E
Feb  7 12:22:17:         Attribute 2 18 6AB5A2B0
Feb  7 12:22:17:         Attribute 6 6 00000005
Feb  7 12:22:17: RADIUS: Received from id 66 
    171.68.118.101:1645, Access-Accept, len 158
Feb  7 12:22:17:         Attribute 6 6 00000005
Feb  7 12:22:17:         Attribute 26 28 0000000901167670
Feb  7 12:22:17:         Attribute 26 29 0000000901177670
Feb  7 12:22:17:         Attribute 26 36 00000009011E7670
Feb  7 12:22:17:         Attribute 26 39 0000000901217670
Feb  7 12:22:17: RADIUS: saved authorization data for user 
    25BA84 at 24C488

!--- RADIUS server supplies the VPDN tunnel attributes.

Feb  7 12:22:17: RADIUS: cisco AVPair 
    "vpdn:tunnel-id=DEFGH"
Feb  7 12:22:17: RADIUS: cisco AVPair 
    "vpdn:tunnel-type=l2tp"
Feb  7 12:22:17: RADIUS: cisco AVPair 
    "vpdn:ip-addresses=10.31.1.9,"
Feb  7 12:22:17: RADIUS: cisco AVPair 
    "vpdn:l2tp-tunnel-password=ABCDE"
Feb  7 12:22:17: AAA/AUTHOR (6239469): Post 
    authorization status = PASS_ADD
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing 
    AV service=ppp
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing 
    AV protocol=vpdn
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing 
    AV tunnel-id=DEFGH
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing 
    AV tunnel-type=l2tp
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing AV 
    ip-addresses=10.31.1.9,
Feb  7 12:22:17: AAA/AUTHOR/VPDN: Processing AV 
    l2tp-tunnel-password=ABCDE
Feb  7 12:22:17: As1 VPDN: Get tunnel info for 
    rtp.cisco.com with LAC DEFGH, IP 10.31.1.9
Feb  7 12:22:17: AAA/AUTHEN: free_user (0x25BA84) 
    user='rtp.cisco.com' ruser='' port='Async1' rem_addr='' 
    authen_type=NONE service=LOGIN priv=0
Feb  7 12:22:17: As1 VPDN: Forward to address 10.31.1.9
Feb  7 12:22:17: As1 VPDN: Forwarding...
Feb  7 12:22:17: AAA: parse name=Async1 idb 
    type=10 tty=1
Feb  7 12:22:17: AAA: name=Async1 flags=0x11 type=4 
    shelf=0 slot=0 adapter=0 port=1 channel=0
Feb  7 12:22:17: AAA/AUTHEN: create_user (0xB7918) 
    user='janedoe@rtp.cisco.com' ruser='' port='Async1' 
    rem_addr='async' authen_type=CHAP service=PPP priv=1
Feb  7 12:22:17: As1 VPDN: Bind interface direction=1
Feb  7 12:22:17: Tnl/Cl 51/1 L2TP: Session FS enabled
Feb  7 12:22:17: Tnl/Cl 51/1 L2TP: Session state change 
    from idle to wait-for-tunnel
Feb  7 12:22:17: As1 51/1 L2TP: Create session
Feb  7 12:22:17: Tnl 51 L2TP: SM State idle
Feb  7 12:22:17: Tnl 51 L2TP: O SCCRQ 
Feb  7 12:22:17: Tnl 51 L2TP: Tunnel state change 
    from idle to wait-ctl-reply
Feb  7 12:22:17: Tnl 51 L2TP: SM State wait-ctl-reply
Feb  7 12:22:17: As1 VPDN: janedoe@rtp.cisco.com 
    is forwarded
Feb  7 12:22:17: Tnl 51 L2TP: I SCCRP from the_LNS

!--- Tunnel authentication is successful.

Feb  7 12:22:17: Tnl 51 L2TP: Got a challenge from remote 
    peer, the_LNS
Feb  7 12:22:17: Tnl 51 L2TP: Got a response from remote 
    peer, the_LNS
Feb  7 12:22:17: Tnl 51 L2TP: Tunnel Authentication 
    success
Feb  7 12:22:17: Tnl 51 L2TP: Tunnel state change from 
    wait-ctl-reply to established
Feb  7 12:22:17: Tnl 51 L2TP: O SCCCN  to the_LNS tnlid 38
Feb  7 12:22:17: Tnl 51 L2TP: SM State established
Feb  7 12:22:17: As1 51/1 L2TP: O ICRQ to the_LNS 38/0
Feb  7 12:22:17: As1 51/1 L2TP: Session state change from 
    wait-for-tunnel to wait-reply
Feb  7 12:22:17: As1 51/1 L2TP: O ICCN to the_LNS 38/1
Feb  7 12:22:17: As1 51/1 L2TP: Session state change from 
    wait-reply to established
2d18h: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
    Async1, changed state to up
LAC#

從LNS路由器進行良好調試 

LNS#show debug
General OS:
  AAA Authentication debugging is on
  AAA Authorization debugging is on
  AAA Accounting debugging is on
VPN:
  L2X protocol events debugging is on
  L2X protocol errors debugging is on
  VPDN events debugging is on
  VPDN errors debugging is on
  L2TP data sequencing debugging is on
VTEMPLATE:
  Virtual Template debugging is on
Radius protocol debugging is on
LNS#
Feb  7 12:22:16: L2TP: I SCCRQ from DEFGH tnl 51

Feb  7 12:22:16: Tnl 38 L2TP: New tunnel created for 
    remote DEFGH, address 10.31.1.6
Feb  7 12:22:16: Tnl 38 L2TP: Got a challenge in SCCRQ, 
    DEFGH
Feb  7 12:22:16: Tnl 38 L2TP: O SCCRP  to DEFGH tnlid 51
Feb  7 12:22:16: Tnl 38 L2TP: Tunnel state change from 
    idle to wait-ctl-reply
Feb  7 12:22:16: Tnl 38 L2TP: I SCCCN from DEFGH tnl 51
Feb  7 12:22:16: Tnl 38 L2TP: Got a Challenge Response 
    in SCCCN from DEFGH
Feb  7 12:22:16: Tnl 38 L2TP: Tunnel Authentication 
    success
Feb  7 12:22:16: Tnl 38 L2TP: Tunnel state change from 
    wait-ctl-reply to established
Feb  7 12:22:16: Tnl 38 L2TP: SM State established
Feb  7 12:22:17: Tnl 38 L2TP: I ICRQ from DEFGH tnl 51
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: Session FS enabled
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change 
    from idle to wait-for-tunnel
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: New session created
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: O ICRP to DEFGH 51/1
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change 
    from wait-for-tunnel to wait-connect
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: I ICCN from DEFGH tnl 
    51, cl 1
Feb  7 12:22:17: Tnl/Cl 38/1 L2TP: Session state change 
    from wait-connect to established
Feb  7 12:22:17: Vi1 VTEMPLATE: Reuse Vi1, recycle 
    queue size 0
Feb  7 12:22:17: Vi1 VTEMPLATE: Hardware address 
    00e0.1e68.942c

!--- Use Virtual-template 1 for this user.

Feb  7 12:22:17: Vi1 VPDN: Virtual interface created for 
    janedoe@rtp.cisco.com
Feb  7 12:22:17: Vi1 VPDN: Set to Async interface
Feb  7 12:22:17: Vi1 VPDN: Clone from Vtemplate 1 
    filterPPP=0 blocking
Feb  7 12:22:17: Vi1 VTEMPLATE: Has a new cloneblk vtemplate, 
    now it has vtemplate
Feb  7 12:22:17: Vi1 VTEMPLATE: ************* CLONE 
    VACCESS1 *****************
Feb  7 12:22:17: Vi1 VTEMPLATE: Clone from 
    Virtual-Template1
interface Virtual-Access1
default ip address
no ip address
encap ppp
ip unnum eth 0
no ip directed-broadcast
peer default ip address pool default
ppp authen chap
end

Feb  7 12:22:18: janedoe@rtp.cisco.com 38/1 L2TP: Session 
    with no hwidb
02:23:59: %LINK-3-UPDOWN: Interface Virtual-Access1, 
    changed state to up
Feb  7 12:22:19: Vi1 AAA/AUTHOR/FSM: (0): LCP succeeds 
    trivially
Feb  7 12:22:19: Vi1 VPDN: Bind interface direction=2
Feb  7 12:22:19: Vi1 VPDN: PPP LCP accepted rcv CONFACK
Feb  7 12:22:19: Vi1 VPDN: PPP LCP accepted sent CONFACK
Feb  7 12:22:19: Vi1 L2X: Discarding packet because of 
    no mid/session
Feb  7 12:22:19: AAA: parse name=Virtual-Access1 idb 
    type=21 tty=-1
Feb  7 12:22:19: AAA: name=Virtual-Access1 flags=0x11 
    type=5 shelf=0 slot=0 adapter=0 port=1 channel=0
Feb  7 12:22:19: AAA/AUTHEN: create_user (0x2462A0) 
    user='janedoe@rtp.cisco.com' ruser='' port='Virtual-Access1' 
    rem_addr='' authen_type=CHAP service=PPP priv=1
Feb  7 12:22:19: AAA/AUTHEN/START (2229277178): 
    port='Virtual-Access1' list='' action=LOGIN 
    service=PPP
Feb  7 12:22:19: AAA/AUTHEN/START (2229277178): 
    using "default" list
Feb  7 12:22:19: AAA/AUTHEN/START (2229277178): 
    Method=RADIUS
Feb  7 12:22:19: RADIUS: ustruct sharecount=1
Feb  7 12:22:19: RADIUS: Initial Transmit Virtual-Access1 
    id 78 171.68.120.194:1645, Access-Request, len 92
Feb  7 12:22:19:         Attribute 4 6 0A1F0109
Feb  7 12:22:19:         Attribute 5 6 00000001
Feb  7 12:22:19:         Attribute 61 6 00000005
Feb  7 12:22:19:         Attribute 1 23 6464756E
Feb  7 12:22:19:         Attribute 3 19 34A66389
Feb  7 12:22:19:         Attribute 6 6 00000002
Feb  7 12:22:19:         Attribute 7 6 00000001
Feb  7 12:22:19: RADIUS: Received from id 78 
    171.68.120.194:1645, Access-Accept, len 32
Feb  7 12:22:19:         Attribute 6 6 00000002
Feb  7 12:22:19:         Attribute 7 6 00000001
Feb  7 12:22:19: AAA/AUTHEN (2229277178): status = PASS
Feb  7 12:22:19: Vi1 AAA/AUTHOR/LCP: Authorize LCP
Feb  7 12:22:19: AAA/AUTHOR/LCP Vi1 (1756915964): 
    Port='Virtual-Access1' list='' service=NET
Feb  7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) 
    user='janedoe@rtp.cisco.com'
Feb  7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) 
    send AV service=ppp
Feb  7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) 
    send AV protocol=lcp
Feb  7 12:22:19: AAA/AUTHOR/LCP (1756915964) found 
    list "default"
Feb  7 12:22:19: AAA/AUTHOR/LCP: Vi1 (1756915964) 
    Method=RADIUS
Feb  7 12:22:19: AAA/AUTHOR (1756915964): Post 
    authorization status = PASS_REPL
Feb  7 12:22:19: Vi1 AAA/AUTHOR/LCP: Processing 
    AV service=ppp
Feb  7 12:22:19: AAA/ACCT/NET/START User 
    janedoe@rtp.cisco.com, Port Virtual-Access1, List ""
Feb  7 12:22:19: AAA/ACCT/NET: Found list "default"
Feb  7 12:22:19: Vi1 AAA/AUTHOR/FSM: (0): Can we 
    start IPCP?
Feb  7 12:22:19: AAA/AUTHOR/FSM Vi1 (1311872588): 
    Port='Virtual-Access1' list='' service=NET
Feb  7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) 
    user='janedoe@rtp.cisco.com'
Feb  7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) 
    send AV service=ppp
Feb  7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) 
    send AV protocol=ip
Feb  7 12:22:19: AAA/AUTHOR/FSM (1311872588) 
    found list "default"
Feb  7 12:22:19: AAA/AUTHOR/FSM: Vi1 (1311872588) 
    Method=RADIUS
Feb  7 12:22:19: AAA/AUTHOR (1311872588): Post 
    authorization status = PASS_REPL
Feb  7 12:22:19: Vi1 AAA/AUTHOR/FSM: We can start 
    IPCP
Feb  7 12:22:19: RADIUS: ustruct sharecount=2
Feb  7 12:22:19: RADIUS: Initial Transmit Virtual-Access1 
    id 79 171.68.120.194:1646, Accounting-Request, len 101
Feb  7 12:22:19:         Attribute 4 6 0A1F0109
Feb  7 12:22:19:         Attribute 5 6 00000001
Feb  7 12:22:19:         Attribute 61 6 00000005
Feb  7 12:22:19:         Attribute 1 23 6464756E
Feb  7 12:22:19:         Attribute 40 6 00000001
Feb  7 12:22:19:         Attribute 45 6 00000001
Feb  7 12:22:19:         Attribute 6 6 00000002
Feb  7 12:22:19:         Attribute 44 10 30303030
Feb  7 12:22:19:         Attribute 7 6 00000001
Feb  7 12:22:19:         Attribute 41 6 00000000
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start.  Her 
    address 0.0.0.0, we want 0.0.0.0
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing 
    AV service=ppp
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization 
    succeeded
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done.  Her 
    address 0.0.0.0, we want 0.0.0.0
Feb  7 12:22:19: RADIUS: Received from id 79 
    171.68.120.194:1646, Accounting-response, 
    len 20
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start.  
    Her address 0.0.0.0, we want 10.6.1.1
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing 
    AV service=ppp
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization 
    succeeded
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done.  
    Her address 0.0.0.0, we want 10.6.1.1
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Start.  
    Her address 10.6.1.1, we want 10.6.1.1
Feb  7 12:22:19: AAA/AUTHOR/IPCP Vi1 (2909132255): 
    Port='Virtual-Access1' list='' service=NET
Feb  7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) 
    user='janedoe@rtp.cisco.com'
Feb  7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) 
    send AV service=ppp
Feb  7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) 
    send AV protocol=ip
Feb  7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) 
    send AV addr*10.6.1.1
Feb  7 12:22:19: AAA/AUTHOR/IPCP (2909132255) 
    found list "default"
Feb  7 12:22:19: AAA/AUTHOR/IPCP: Vi1 (2909132255) 
    Method=RADIUS
Feb  7 12:22:19: AAA/AUTHOR (2909132255): Post 
    authorization status = PASS_REPL
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Reject 
    10.6.1.1, using 10.6.1.1
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing 
    AV service=ppp
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Processing 
    AV addr*10.6.1.1
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Authorization 
    succeeded
Feb  7 12:22:19: Vi1 AAA/AUTHOR/IPCP: Done.  
    Her address 10.6.1.1, we want 10.6.1.1
02:24:00: %LINEPROTO-5-UPDOWN: Line protocol on 
    Interface Virtual-Access1, changed state to up
LNS#

可能出錯 — 從LAC進行錯誤調試 

LAC#show debug
General OS:
  AAA Authentication debugging is on
  AAA Authorization debugging is on
  AAA Accounting debugging is on
VPN:
  L2X protocol events debugging is on
  L2X protocol errors debugging is on
  VPDN events debugging is on
  VPDN errors debugging is on
  L2TP data sequencing debugging is on
VTEMPLATE:
  Virtual Template debugging is on
Radius protocol debugging is on

使用者以janedoe@sj.cisco.com(而不是janedoe@rtp.cisco.com)的身份進入，但LAC RADIUS伺服器無法識別此網域。

Feb  7 13:26:48: RADIUS: Received from id 86 
    171.68.118.101:1645, Access-Reject, len 46
Feb  7 13:26:48:         Attribute 18 26 41757468
Feb  7 13:26:48: RADIUS: failed to get 
    authorization data: authen status = 2
%VPDN-6-AUTHORFAIL: L2F NAS LAC, AAA authorization 
    failure for As1 user janedoe@sj.cisco.com

以下偵錯顯示收到通道資訊，但通道另一端的IP位址無效的情況。使用者嘗試建立會話，但無法連線。

Feb  7 13:32:45: As1 VPDN: Forward to 
    address 1.1.1.1
Feb  7 13:32:45: As1 VPDN: Forwarding...
Feb  7 13:32:45: Tnl 56 L2TP: Tunnel state 
    change from idle to wait-ctl-reply
Feb  7 13:32:46: As1 56/1 L2TP: Discarding data 
    packet because tunnel is not open

這些偵錯顯示發生通道密碼不相符的情況。在LNS上，「username the_LNS password ABCDE」更改為「username the_LNS password garbage」，因此嘗試進行通道驗證時失敗。

Feb  7 13:39:35: Tnl 59 L2TP: Tunnel Authentication 
    fails for the_LNS
Feb  7 13:39:35: Tnl 59 L2TP: Expected 
    E530DA13B826685C678589250C0BF525
Feb  7 13:39:35: Tnl 59 L2TP: Got 
   E09D90E8A91CF1014C91D56F65BDD052
Feb  7 13:39:35: Tnl 59 L2TP: O StopCCN  
    to the_LNS tnlid 44
Feb  7 13:39:35: Tnl 59 L2TP: Tunnel state 
    change from wait-ctl-reply to shutting-down
Feb  7 13:39:35: Tnl 59 L2TP: Shutdown tunnel

可能出現錯誤 — LNS的調試錯誤 

LNS#show debug
General OS:
  AAA Authentication debugging is on
  AAA Authorization debugging is on
  AAA Accounting debugging is on
VPN:
  L2X protocol events debugging is on
  L2X protocol errors debugging is on
  VPDN events debugging is on
  VPDN errors debugging is on
  L2TP data sequencing debugging is on
VTEMPLATE:
  Virtual Template debugging is on
Radius protocol debugging is on
LNS#

在本示例中，「accept dialing l2tp virtual-template 1 remote DEFGH」更改為「accept dialin l2tp virtual-template 1 remote junk」。 LNS無法再找到通道DEFGH（它是「垃圾郵件」）。

Feb  7 13:45:32: L2TP: I SCCRQ from 
    DEFGH tnl 62
Feb  7 13:45:32: L2X: Never heard of 
    DEFGH
Feb  7 13:45:32: L2TP: Could not find info 
    block for DEFGH

LNS記帳記錄 

10.31.1.9 janedoe@rtp.cisco.com 1 - start 
    server=rtp-cherry time=09:23:53 
    date=02/ 6/1999 task_id=0000001C 
Sat Feb 6 12:23:53 1999
        Client-Id = 10.31.1.9
        Client-Port-Id = 1
        NAS-Port-Type = Virtual
        User-Name = "janedoe@rtp.cisco.com"
        Acct-Status-Type = Start
        Acct-Authentic = RADIUS
        User-Service-Type = Framed-User
        Acct-Session-Id = "0000001C"
        Framed-Protocol = PPP
        Acct-Delay-Time = 0
 
 
10.31.1.9 janedoe@rtp.cisco.com 1 - stop 
    server=rtp-cherry time=09:24:46 
    date=02/ 6/1999 task_id=0000001C        
Sat Feb  6 12:24:46 1999
        Client-Id = 10.31.1.9
        Client-Port-Id = 1
        NAS-Port-Type = Virtual
        User-Name = "janedoe@rtp.cisco.com"
        Acct-Status-Type = Stop
        Acct-Authentic = RADIUS
        User-Service-Type = Framed-User
        Acct-Session-Id = "0000001C"
        Framed-Protocol = PPP
        Framed-Address = 10.6.1.1
        Acct-Terminate-Cause = Lost-Carrier
        Acct-Input-Octets = 678
        Acct-Output-Octets = 176
        Acct-Input-Packets = 17
        Acct-Output-Packets = 10
        Acct-Session-Time = 53
        Acct-Delay-Time = 0

相關資訊

修訂記錄

修訂 發佈日期 意見
1.0
10-Dec-2001
初始版本

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