显示ISDN有关信息 show isdn {active | history | memory | services | status [dsl | interface-type number] | timers}
注:1.交换机类型如下表,国内交换机一般为basic-net3。
按区域分关键字 交换机类型
Australia
basic-ts013 Australian TS013 switches
Europe
basic-1tr6 German 1TR6 ISDN switches
basic-nwnet3 Norway NET3 switches (phase 1)
basic-net3 NET3 ISDN switches (UK, Denmark, and other nations); covers the Euro-ISDN E-DSS1 signalling system
primary-net5 NET5 switches (UK and Europe)
vn2 French VN2 ISDN switches
vn3 French VN3 ISDN switches
Japan
ntt Japanese NTT ISDN switches
primary-ntt Japanese ISDN PRI switches
North America
basic-5ess AT&T basic rate switches
basic-dms100 NT DMS-100 basic rate switches
basic-ni1 National ISDN-1 switches
primary-4ess AT&T 4ESS switch type for the U.S. (ISDN PRI only)
primary-5ess AT&T 5ESS switch type for the U.S. (ISDN PRI only)
primary-dms100 NT DMS-100 switch type for the U.S. (ISDN PRI only)
New Zealand
basic-nznet3 New Zealand Net3 switches
3. ISDN实现DDR(dial-on-demand routing)实例:
设置如下:
Router1:
hostname router1
user router2 password cisco
!
isdn switch-type basic-net3
!
interface bri 0
ip address 192.200.10.1 255.255.255.0
encapsulation ppp
dialer map ip 192.200.10.2 name router2 572
dialer load-threshold 80
ppp multilink
dialer-group 1
ppp authentication chap
!
dialer-list 1 protocol ip permit
!
Router2:
hostname router2
user router1 password cisco
!
isdn switch-type basic-net3
!
interface bri 0
ip address 192.200.10.2 255.255.255.0
encapsulation ppp
dialer map ip 192.200.10.1 name router1 571
dialer load-threshold 80
ppp multilink
dialer-group 1
ppp authentication chap
!
dialer-list 1 protocol ip permit
!
Cisco路由器同时支持回拨功能,我们将路由器Router1作为Callback Server,Router2作为Callback Client。
与回拨相关命令:
任务 命令
映射协议地址和电话号码,并在接口上使用在全局模式下定义的PPP回拨的映射类别。 dialer map protocol address name hostname class classname dial-string
设置如下:
Router1:
hostname router1
user router2 password cisco
!
isdn switch-type basic-net3
!
interface bri 0
ip address 192.200.10.1 255.255.255.0
encapsulation ppp
dialer map ip 192.200.10.2 name router2 class s3 572
dialer load-threshold 80
ppp callback accept
ppp multilink
dialer-group 1
ppp authentication chap
!
map-class dialer s3
dialer callback-server username
dialer-list 1 protocol ip permit
!
Router2:
hostname router2
user router1 password cisco
!
isdn switch-type basic-net3
!
interface bri 0
ip address 192.200.10.2 255.255.255.0
encapsulation ppp
dialer map ip 192.200.10.1 name router1 571
dialer load-threshold 80
ppp callback request
ppp multilink
dialer-group 1
ppp authentication chap
!
dialer-list 1 protocol ip permit
!
相关调试命令:
debug dialer
debug isdn event
debug isdn q921
debug isdn q931
debug ppp authentication
debug ppp error
debug ppp negotiation
debug ppp packet
show dialer
show isdn status
举例:执行debug dialer命令观察router2呼叫router1,router1回拨router2的过程.
router1#debug dialer
router2#ping 192.200.10.1
router1#
00:03:50: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
00:03:50: BRI0:1PP callback Callback server starting to router2 572
00:03:50: BRI0:1: disconnecting call
00:03:50: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
00:03:50: BRI0:1: disconnecting call
00:03:50: BRI0:1: disconnecting call
00:03:51: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
00:03:52: callback to router2 already started
00:03:52: BRI0:2: disconnecting call
00:03:52: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
00:03:52: BRI0:2: disconnecting call
00:03:52: BRI0:2: disconnecting call
00:04:05: : Callback timer expired
00:04:05: BRI0:beginning callback to router2 572
00:04:05: BRI0: Attempting to dial 572
00:04:05: Freeing callback to router2 572
00:04:05: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
00:04:05: BRI0:1: No callback negotiated
00:04:05: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
00:04:05: dialer Protocol up for Vi1
00:04:06: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to up
00:04:06: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, chang
ed state to up
00:04:11: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 572
#router1
设定登录263的用户名和口令 ppp pap sent-username 263 password 263
设定默认路由 ip route 0.0.0.0 0.0.0.0 bri 0
设定符合访问列表2的所有源地址被翻译为bri 0所拥有的地址 ip nat inside source list 2 interface bri 0 overload
设定访问列表2,允许所有协议 access-list 2 permit any
具体配置如下:
hostname Cisco2503
!
isdn switch-type basic-net3
!
ip subnet-zero
no ip domain-lookup
ip routing
!
interface Ethernet 0
ip address 10.0.0.1 255.255.255.0
ip nat inside
no shutdown
!
interface Serial 0
shutdown
no description
no ip address
!
interface Serial 1
shutdown
no description
no ip address
!
interface bri 0
ip address negotiated
ip nat outside
encapsulation ppp
ppp authentication pap callin
ppp multilink
dialer-group 1
dialer hold-queue 10
dialer string 2633
dialer idle-timeout 120
ppp pap sent-username 263 password 263
no cdp enable
no ip split-horizon
no shutdown
!
ip classless
!
! Static Routes
!
ip route 0.0.0.0 0.0.0.0 bri 0
!
! Access Control List 2
!
access-list 2 permit any
!
dialer-list 1 protocol ip permit
!
! Dynamic NAT
!
ip nat inside source list 2 interface bri 0 overload
snmp-server community public ro
!
line console 0
exec-timeout 0 0
!
line vty 0 4
!
end
>set system c765
c765> set multidestination on
c765> set switch net3
c765> set ppp multilink on
c765> cd lan
c765:LAN> set ip routing on
c765:LAN> set ip address 10.0.0.1
c765:LAN> set ip netmask 255.0.0.0
c765:LAN> set briding off
c765:LAN>cd
c765> set user remotenet
New user remotenet being created
c765:remotenet> set ip routing on
c765:remotenet> set bridging off
c765:remotenet> set ip framing none
c765:remotenet> set ppp clientname 263
c765:remotenet> set ppp password client
Enter new Password: 263
Re-Type new Password: 263
c765:remotenet> set ppp authentication out none
c765:remotenet> set ip address 0.0.0.0
c765:remotenet> set ip netmask 0.0.0.0
c765:remotenet> set ppp address negotiation local on
c765:remotenet> set ip pat on
c765:remotenet> set ip route destination 0.0.0.0/0 gateway 0.0.0.0
c765:remotenet> set number 2633
c765:remotenet> set active
命令描述如下:
任务 命令
设置路由器系统名称 set system c765
允许路由器呼叫多个目的地 set multidestination on
设置ISDN交换机类型为NET3 set switch net3
允许点到点间多条通道连接实现负载均衡 set ppp multilink on
关掉桥接 set briding off
建立用户预制文件用于设置拨号连接参数- 可以设置多个用户预制文件用于相同的物理端口对应于不同的连接。 set user remotenet
使用PPP/IPCP set ip framing none
设置上网用户帐号 set ppp clientname 263
设置上网口令 set ppp password client Enter new Password: 263 Re-Type new Password: 263
不用PPP/CHAP或PAP做认证 set ppp authentication out none
允许地址磋商 set ppp address negotiation local on
设置地址翻译 set ip pat on
设置默认路由 set ip route destination 0.0.0.0/0 gateway 0.0.0.0
Router:
hostname Router
enable secret 5 $1$EFqU$tYLJLrynNUKzE4bx6fmH//
!
interface Ethernet0
ip address 10.111.4.20 255.255.255.0
!
interface Async1
ip unnumbered Ethernet0
encapsulation ppp
keepalive 10
async mode interactive
peer default ip address pool Cisco2511-Group-142
!
ip local pool Cisco2511-Group-142 10.111.4.21 10.111.4.36
!
line con 0
exec-timeout 0 0
password cisco
!
line 1 16
modem InOut
modem autoconfigure discovery
flowcontrol hardware
!
line aux 0
transport input all
line vty 0 4
password cisco
!
end
hostname c2522rb
!
enable secret 5 $1$J5vn$ceYDe2FwPhrZi6qsIIz6g0
enable password cisco
!
username c4700 password 0 cisco
ip subnet-zero
chat-script cisco-default "" "AT" TIMEOUT 30 OK "ATDT \T" TIMEOUT 30 CONNECT \c
chat-script reset atz
!
interface Ethernet0
ip address 16.122.51.254 255.255.255.0
no ip mroute-cache
!
interface Serial0
backup delay 10 10
backup interface Serial2
ip address 16.250.123.18 255.255.255.252
no ip mroute-cache
no fair-queue
!
interface Serial1
no ip address
no ip mroute-cache
shutdown
!
interface Serial2
physical-layer async
ip address 16.249.123.18 255.255.255.252
encapsulation ppp
async mode dedicated
dialer in-band
dialer idle-timeout 60
dialer map ip 16.249.123.17 name c4700 6825179
dialer-group 1
ppp authentication chap
!
interface Serial3
no ip address
shutdown
no cdp enable
!
interface Serial4
no ip address
shutdown
no cdp enable
!
interface Serial5
no ip address
no ip mroute-cache
shutdown
!
interface Serial6
no ip address
no ip mroute-cache
shutdown
!
interface Serial7
no ip address
no ip mroute-cache
shutdown
!
interface Serial8
no ip address
no ip mroute-cache
shutdown
!
interface Serial9
no ip address
no ip mroute-cache
shutdown
!
interface BRI0
no ip address
no ip mroute-cache
shutdown
!
router eigrp 200
network 16.0.0.0
!
ip classless
!
dialer-list 1 protocol ip permit
!
line con 0
line 2
script dialer cisco-default
script reset reset
modem InOut
modem autoconfigure discovery
rxspeed 38400
txspeed 38400
flowcontrol hardware
line aux 0
line vty 0 4
password cisco
login
!
end
c2522rb#