ADSL modem configuration of Cisco router

Router Access ADSL configuration detailed

1, Cisco router connection to the ADSL modem configuration: Note: The case for Beijing Telecom ADSL PPPoE access, need to use a common ADSL modem and a Cisco 2500 router (dual Ethernet port), IOS 12.2 (T), Be able to realize LAN sharing Internet.

This case configuration is divided into 7 steps:
First step: Configure VPDN VPDN E
1. The PPPoE configuration of Cisco router connecting ADSL modem:

Description: The case for Beijing Telecom ADSL PPPoE access, the need to use a common ADSL modem and a Cisco 2500 router (dual Ethernet port), IOS 12.2 (T), can realize LAN sharing Internet.
This case configuration is divided into 7 steps:
First Step: Configure VPDN
VPDN enable (Virtual private dial-up networking for routers---vpnd)
Vpdn-group Office (set up a VPDN group,)
Request-dialin (Initializes a VPND tunnel, establishes a VPDN subgroup that requests dial-in)
Protocol PPPoE (VPDN subgroup uses PPPoE to establish a session tunnel)

Step Two: Configure the router to connect the ADSL modem interface
Interface Ethernet1
No IP address
PPPoE enable allow Ethernet interface to run PPPoE
Pppoe-client Dial-pool-number 1 Add PPPoE dial-up Client of Ethernet interface to dial Pool 1

Step Three: Configure the logical dial-up interface:
Interface Dialer1
IP address negotiated from ADSL provider dynamic negotiation
IP NAT outside enable NAT for this interface
Encapsulation PPP encapsulates the PPP protocol for this interface
Dialer Pool 1 This interface uses Dial 1th to dial
Dialer-group 1 This command is of little value for PPPoE.
PPP authentication pap callin enable PPP PAP validation
PPP pap sent-username xxxxxxx Password 0 YYYYYYY using the username and password already requested

Step Fourth: Configure the Internal network interface
Interface Ethernet0 (Internal network interface)
IP address 10.1.1.1 255.255.255.0
IP NAT inside enable NAT for this interface

Step Fifth: Configure the router to provide DHCP service for the Internal network host
IP dhcp excluded-address 10.1.1.1
IP DHCP Pool ABC
Import all (importing DNS and WINS server)
Network 10.1.1.0 255.255.255.0
Default-router 10.1.1.1

Step Sixth: Configure NAT:
Access-list 1 Permit 10.1.1.0 0.0.0.255
Cc

Step Seventh: Configure the default route
IP Route 0.0.0.0 0.0.0.0 Dialer1


2, Cisco router connection ADSL WIC card of PPPoE configuration solution:

!
VPDN Enable
No VPDN logging <= because the ADSL PPPoE application is implemented through virtual dialing, it is necessary to use the VPDN function in the router
!
Vpdn-group PPPoE <= started the VPDN process for PPPoE
Request-dialin
Protocol PPPoE <= set dial-up protocol for PPPoE
!
Interface FastEthernet0 <= set up the company's internal network address
IP address 192.168.0.1 255.255.255.0
IP nat inside <= to enable NAT conversion, set the Fast Ethernet port to the internal network, and convert the original address of the data received from the internal network to the public address

!
Interface atm0/0 <= set ADSL port
No IP address <= please do not set addresses
No ATM ilmi-keepalive
Bundle-enable
DSL Operating-mode Auto
Hold-queue 224 in
Interface atm0/0.1 Point-to-Point &LT;=ADSL communication relies on VC, so you must set point-to-point VC
PVC 8/81 <= Set the relevant parameters of PVC, that is, VCI and VPI values, if not clear, please check to the local side
Pppoe-client Dial-pool-number 1 <=pppoe The dial-up process uses the regular dialing process, which references the Dialer-pool 1
!
Interface Dialer1 <= establishes a virtual dial-up port IP address negotiated <= due to the availability of dynamic addresses at the local end, the address must be set to negotiate access
IP MTU 1492 <= Modify MTU value for ADSL network
IP nat outside <= to enable NAT conversion, set this port as an external network
Encapsulation PPP <= using the frame format of PPP
Dialer Pool 1
PPP authentication pap callin <= set dial-up authentication mode to PAP
PPP PAP sent VIP pass VIP <= send username and password
IP nat inside source List 1 interface Dialer1 overload <= set NAT conversion, using dialer 1 port dynamic Address
！
IP classless
IP route 0.0.0.0 0.0.0.0 dialer1 <= sends all routable datagrams to the ADSL line, setting the default route
No IP HTTP Server
!
Access-list 1 Permit 192.168.0.0 0.0.0.255

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The PPPoE configuration of the Cisco router connecting to the ADSL modem:

Hostname Bjsite
!
IP Subnet-zero
No IP domain-lookup
!
VPDN Enable
No VPDN logging
!
Vpdn-group 1
Request-dialin
Protocol PPPoE
!
Interface ethernet0/0
IP address 192.168.0.1 255.255.255.0
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 dg48907653@163.gd password xxxxxxxx
!
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 192.168.0.0 0.0.0.255
!
Line con 0
Exec-timeout 0 0
Transport input None
Line vty 0 4
Login
!
End

Cisco router connects to the ADSL WIC card's PPPoE configuration:
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
!---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 a example value that must to 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 <username>
PPP chap password <password>
!

!---the ISP 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 <username>
!---PPP chap password <password>
!---with the following two lines:
!---PPP authentication pap callin
!---PPP pap sent-username <username> password <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
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Use Cisco router to do PPPoE server-side configuration


En
Conf t
Hostname Adsl_walkbird
Username Walkbird Password Walkbird
VPDN Enable
Vpdn-group PPPoE
Accept-dialin
Protocol PPPoE
Virtual-template 1
Exit
Exit
Interface Ethernet 0/0
PPPoE Enable
No shutdown
Interface Virtual-template 1
MTU 1492//PPP Header Maximum Transmission unit
IP unnumbered loopback//borrowing address
Peer default IP address pool Pppoe_ip_pool
Encapsulation PPP
PPP Authentication PAP
Exit
IP local pool pppoe_ip_pool 11.11.11.10 11.11.11.100
Interface Lookback0
IP Address 1.1.1.1 255.255.255.0
No shutdown
Exit
Third, the experimental test
SH IP route
SH IP int Brief
Debug PPPoE Event
SH IP int Dialer 1