IP Dialing

Scenario :- in this scenario we are using LNS only (layer2 network server ) for both function authentication and IP assigning).
Here we are considering you have ip reachability of that IP which you are dialing please find below mention diagram for the same.














Required Configuartion for LNS
interface Loopback226
ip address 20.235.21.1 255.255.255.248 (according to this 6 IPs are valid)
(This loopback is created to map a interface with virtual-templete and pool has been created to specify the range of ip assigning. The subnet mask of loopback interface according to the pool)
vpdn enable
vpdn-group 1 (Creates VPDN group for the LNS)
! Default PPTP VPDN group (this command will come automatic)
accept-dialin (Creates an accept dial-in VPDN subgroup.)

protocol pptp--- (Specifies PPTP as the tunneling protocol).

virtual-template 5---- (Instructs the LNS to clone virtual access interfaces for VPDN sessions from virtual template 5).


interface Virtual-Template5 ( Creates virtual template 5, which is used to clone virtual access interfaces for incoming
VPDN sessions).

ip unnumbered Loopback226 (Specifies that the virtual access interfaces will use the IP address of loopback226)


peer default ip address pool TEST1 (Instructs the LNS to assign an IP address to VPDN sessions from the Test1
pool).
ppp authentication pap chap (Specifying ppp autentication method)
ip local pool TEST1 20.235.21.1 20.235.21.6
username cisco privilege 15 password 0 xxxx (Specifying the username & password for PC)