贴一个单臂的配置实例 
机配置
3512xl#show running-config
Building configuration...
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 3512xl
!
no logging console
enable password mysecret
!
!
!
!
!
ip subnet-zero
!
!
!
interface FastEthernet0/1
switchport mode trunk
!
!-- If 802.1Q is configured,
!-- you will instead see the following output
!-- under interface FastEthernet0/1:
!-- interface FastEthernet0/1
!-- switchport trunk encapsulation dot1q
!-- switchport mode trunk
!
interface FastEthernet0/2
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/3
spanning-tree portfast
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface VLAN1
ip address 10.10.10.2 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
ip default-gateway 10.10.10.1
!
line con 0
transport input none
stopbits 1
line vty 0 4
password mysecret
login
line vty 5 15
login
!
end
路由器配置 Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname c2600
!
no logging console
enable password mysecret
!
!
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation isl 1
ip address 10.10.10.1 255.255.255.0
no ip redirects
!
!-- If 802.1Q is configured,
!-- you will instead see the following output
!-- under interface FastEthernet0/0.1:
!-- interface FastEthernet0/0.1
!-- encapsulation dot1Q 1 native
!-- ip address 10.10.10.1 255.255.255.0
!
!
interface FastEthernet0/0.2
encapsulation isl 2
ip address 10.10.11.1 255.255.255.0
no ip redirects
!
!-- If 802.1Q is configured,
!-- you will instead see the following output
!-- under interface FastEthernet0/0.2:
!-- interface FastEthernet0/0.2
!-- encapsulation dot1Q 2
!-- ip address 10.10.11.1 255.255.255.0
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip classless
no ip http server
!
!
!
line con 0
transport input none
line aux 0
line vty 0 4
password mysecret
login
!
no scheduler allocate
end
PPPoE配置实例（2600路由器接ADSL Modem） [[The No.2 Picture.]] hostname pooh
ip host rund 172.17.247.195
!
ip subnet-zero
no ip domain-lookup
!
vpdn enable
no vpdn logging
!
vpdn-group 1
request-dialin
protocol pppoe
!
!
!
!
interface Ethernet0/0
ip address 10.200.56.22 255.255.255.0
ip nat inside
no ip mroute-cache
!
!
!
!
interface Ethernet0/1
no ip address
pppoe enable
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address negotiated
ip nat outside
ip mtu 1492
encapsulation ppp
no ip mroute-cache
dialer pool 1
dialer-group 1
ppp authentication pap
ppp pap sent-username cisco password cisco1
!
ip classless
no ip http server
!
dialer-list 1 protocol ip permit
ip nat inside source list 1 interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 dialer1
access-list 1 permit 10.200.56.0 0.0.0.255
!
line con 0
exec-timeout 0 0
transport input none
line vty 0 4
login
password ww
!
end
PPPoA配置实例 （2600路由器连接Wic-1ADSL） vpdn enable
no vpdn logging
!--- default.
!
vpdn-group pppoe
request-dialin
!--- we are the PPPoE client requesting to establish
!--- a session with the aggregation unit (6400 NRP).
protocol pppoe
!
!--- internal Ethernet network.
!
interface FastEthernet0
ip address 10.92.1.182 255.255.255.0
ip nat inside
!--- DSL interface.
!
interface ATM0
no ip address
no atm ilmi-keepalive
bundle-enable
dsl operating-mode auto
hold-queue 224 in
!--- All defaults.
!--- PPPoE runs on top of AAL5SNAP, but the
!--- encap aal5snap command is not used.
!
interface ATM0.1 point-to-point
pvc 1/1
pppoe-client dial-pool-number 1
!--- pvc 1/1 is an example value that must be changed
!--- to match the value used by the ISP.
!
!--- The PPPoE client code ties into a dialer interface upon
!--- which a virtual-access interface is cloned.
!
interface Dialer1
ip address negotiated
ip mtu 1492
!--- Ethernet MTU default = 1500 (1492 + PPPoE headers = 1500)
ip nat outside
encapsulation ppp
dialer pool 1
!--- Ties to atm interface.
ppp authentication chap callin
ppp chap hostname
ppp chap password
!
!--- The ISP will instruct you regarding
!--- the type of authentication to use.
!--- To change from PPP CHAP to PPP PAP,
!--- replace the following three lines:
!--- ppp authentication chap callin
!--- ppp chap hostname
!--- ppp chap password
!--- with the following two lines:
!--- ppp authentication pap callin
!--- ppp pap sent-username password
!--- For NAT we are going to overload on the Dialer1
!--- interface and add a default route out
!--- since dialer ip address can change.
ip nat inside source list 1 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 dialer1
no ip http server
!
access-list 1 permit 10.92.1.0 0.0.0.255
【责编:admin】
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