環(huán)境：兩臺(tái)路由器，由BRI口相連。

要求：通過ISDN線路實(shí)現(xiàn)兩個(gè)網(wǎng)段的互通，使用PPP CHAP驗(yàn)證，定義所有的IP流為感興趣流。

 

 

 

 

步驟1、初始化配置

 

r1的配置：

r1(config)#no ip domain-lookup

r1(config)#line console 0

r1(config-line)#logging synchronous

r1(config-line)#exec-timeout 0 0

r1(config-line)#

 

r2的配置：

r2(config)#no ip domain-lookup

r2(config)#line console 0

r2(config-line)#logging synchronous

r 2(config-line)#exec-timeout 0

r2(config-line)#

 

步驟二、ISDN的配置

 

r1的配置:

r1(config)#isdn switch-type basic-net3      à交換機(jī)類型

r1(config)#username r2 password cisco     à驗(yàn)證用戶名及密碼

r1(config)#dialer-list 1 protocol ip permit   à定義興趣流

 

r2的配置:

r2(config)#isdn switch-type basic-net3

r2(config)#username r1 password cisco

r2(config)#dialer-list 1 protocol ip permit

 

步驟三、配置驗(yàn)證

 

r1的配置:

r1(config)#interface loopback 0

r1(config-if)#ip address 10.1.1.1 255.255.255.0

r1(config-if)#interface bri0

r1(config-if)#encapsulation ppp                 à封裝PPP

r1(config-if)#ppp authentication chap            à啟用CHAP驗(yàn)證

r1(config-if)#ip address 30.1.1.1 255.255.255.0

r1(config-if)#dialer-group 1                     à加載感興趣流

r1(config-if)#dialer map ip 30.1.1.2 name r2 1102   à撥號(hào)映射

r1(config-if)#dialer idle-time 180                 à定義超時(shí)

r1(config-if)#no fair-queue                      à關(guān)閉公平對(duì)列

r1(config-if)#no shutdown

 

r2的配置:

r2(config)#interface loopback 0

r2(config-if)#ip address 20.1.1.1 255.255.255.0

r2(config-if)#interface bri0

r2(config-if)#encapsulation ppp

r2(config-if)#ppp authentication chap

r2(config-if)#ip address 30.1.1.2 255.255.255.0

r2(config-if)#dialer-group 1

r2(config-if)#dialer map ip 30.1.1.1 name r1 1101

r2(config-if)#dialer idle-time 180

r2(config-if)#no fair-queue

r2(config-if)#no shutdown

 

步驟四、定義靜態(tài)路由

r1(config)#ip route 20.1.1.0 255.255.255.0 30.1.1.2    à指定靜態(tài)路由

 

r2(config)#ip route 10.1.1.0 255.255.255.0 30.1.1.1

 

步驟五、測(cè)試

r1#ping              à觸發(fā)感興趣流

Protocol [ip]:

Target IP address: 20.1.1.1

Extended commands [n]: y

Source address or interface: 10.1.1.1

.!!!!

 

 

步驟六、查看相應(yīng)狀態(tài)

 

r1#show isdn status   à查看ISDN狀態(tài)

Global ISDN Switchtype = basic-net3

ISDN BRI0 interface

        dsl 0, interface ISDN Switchtype = basic-net3

    Layer 1 Status:

        ACTIVE

    Layer 2 Status:

        TEI = 71, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

    Layer 3 Status:

        1 Active Layer 3 Call(s)

        CCB:callid=8003, sapi=0, ces=1, B-chan=2, calltype=DATA

    Active dsl 0 CCBs = 1

    The Free Channel Mask:  0x80000001

    Total Allocated ISDN CCBs = 1

 

Total Allocated ISDN CCBs = 1

 

r1#show isdn active    à此命令可以顯示當(dāng)前活躍的連接

--------------------------------------------------------------------------------

                                ISDN ACTIVE CALLS

--------------------------------------------------------------------------------

Call    Calling      Called       Remote  Seconds Seconds Seconds Charges

Type    Number       Number       Name    Used    Left    Idle    Units/Currency

--------------------------------------------------------------------------------

Out   ---N/A---        1101           r1            11     170       9      0

--------------------------------------------------------------------------------

 

 

r1#show interface bri0:1     à查看接口狀態(tài)

BRI0:1 is down, line protocol is down

 

r1#show interface bri0:2          à占用了一個(gè)B信道

BRI0:2 is up, line protocol is up

 

 

步驟七、顯示當(dāng)前配置

 

r1的當(dāng)前配置：

r1#show running-config

hostname r1

!

username r2 password 0 cisco

no ip domain-lookup

 

isdn switch-type basic-net3

!

interface Loopback0

 ip address 10.1.1.1 255.255.255.0

!

interface BRI0

 ip address 30.1.1.1 255.255.255.0

 encapsulation ppp

 dialer idle-timeout 180

 dialer map ip 30.1.1.2 name r2 2202

 dialer-group 1

 isdn switch-type basic-net3

 no fair-queue

 ppp authentication chap

!

ip route 20.1.1.0 255.255.255.0 30.1.1.2

!

dialer-list 1 protocol ip permit

!

end

 

r2的當(dāng)前配置：

r2#show running-config

!

hostname r2

!

!

username r1 password 0 cisco

no ip domain-lookup

!

isdn switch-type basic-net3

!

interface Loopback0

 ip address 20.1.1.1 255.255.255.0

!

interface BRI0

 ip address 30.1.1.2 255.255.255.0

 encapsulation ppp

 dialer idle-timeout 180

 dialer map ip 30.1.1.1 name r1 2201

 dialer-group 1

 isdn switch-type basic-net3

 no fair-queue

 ppp authentication chap

!

ip route 10.1.1.0 255.255.255.0 30.1.1.1

!

dialer-list 1 protocol ip permit

!

end