Cisco DSL路由器配置和故障排除指南 — 使用動態IP地址充當PPPoE客戶端的Cisco DSL路由器

!--- Comments contain explanations and additional information.


service timestamps debug datetime msec
service timestamps log datetime msec
vpdn enable
 no vpdn logging
 vpdn-group pppoe
  request-dialin
   protocol pppoe

!--- These commands are needed only on Cisco IOS Software earlier than 12.2(13)T.

!
!
ip subnet-zero
!

 !--- For DHCP: 

ip dhcp excluded-address 
         
         
           ip dhcp pool 
          
            network 
            
            
              default-router 
             
               dns-server 
               
               
              
             
            
           
         
!
interface ethernet0  
 no shut  
 ip address <ip address> <subnet mask> 
 ip tcp adjust-mss 1452 
 
!--- If the ip tcp adjust-mss 1452 command is not supported, !--- try this configuration statement: !--- ip adjust-mss 1452 


 
!--- If this command is not supported in your current Cisco DSL Router software !--- release, either upgrade to the latest Cisco DSL Router software or follow the !--- procedure in the "Possible Required Configuration Steps on the PC" !--- section of this document. 

 

 !--- For NAT: 

ip nat inside
 no ip directed-broadcast
!
interface atm0
 no shut
 no ip address
 bundle-enable
 dsl operating-mode auto
!
interface atm0.1 point-to-point
 no ip address
 no ip directed-broadcast
 no atm ilmi-keepalive
 pvc <vpi/vci>
 pppoe-client dial-pool-number 1
 
!--- Common PVC values supported by ISPs are 0/35 or 8/35. !--- Confirm your PVC values with your ISP.

 !
!
interface dialer1
 ip address negotiated
 mtu 1492

 !--- For NAT: 

 ip nat outside
 encapsulation ppp
 dialer pool 1
 ppp authentication chap pap callin
 ppp chap hostname <username>
 ppp chap password <password>
 ppp pap sent-username <username> password <password>
!

 !--- For NAT: 

ip nat inside source list 1 interface dialer1 overload


!--- If you have a pool (a range) of public IP addresses provided !--- by your ISP, you can use a NAT Pool. Replace !--- ip nat inside source list 1 interface dialer1 overload 

 

!--- with these two configuration statements: !--- ip nat inside source list 1 pool 
           
             overload 
            !--- ip nat pool 
            
             
             
            !---  
           
             netmask 
             
            



!--- If Internet users require access to an internal server, you can !--- add this static NAT configuration statement: !--- ip nat inside source static tcp 
           
             {80 or 25} 
            !---  
           
             {80 or 25} extendable 
            !--- Note: TCP port 80 (HTTP/web) and TCP port 25 (SMTP/mail) are used !--- for this example. You can open other TCP or UDP ports, if needed.

! 
ip classless
ip route 0.0.0.0 0.0.0.0 interface dialer 1

 !--- For NAT: 

access-list 1 permit 
         
          
           
         

!--- In this configuration, access-list 1 defines a standard access list !--- that permits the addresses that NAT translates. For example, if !--- your private IP network was 10.10.10.0, configuring !--- access-list 1 permit 10.10.10.0 0.0.0.255 would allow NAT to translate !--- packets with source addresses between 10.10.10.0 and 10.10.10.255.

!
end