Point-to-Point Protocol over Ethernet - using windows & cisco

PPPOE is a network protocol for encapsulation ppp in ethernet network. It is one of dial technology beside pptp and L2TP. It is usually used in adsl network, subcriber can access internet provider using user's credential (username and password) . PPPOE works in layer 2 network meanwhile PPTP work in Layer 3.

What I want to show you is the basic configuration using windows as a pppoe client and cisco 2600 as a pppoe server.

Here is the diagram :

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1. Create Virtual-Template :

VPN_SERVER(config)# interface Virtual-Template1
VPN_SERVER(config-if)# ip unnumbered FastEthernet0/1.81
VPN_SERVER(config-if)# ip tcp adjust-mss 1460

2. Enable vpdn and making vpdn-group :

VPN_SERVER(config)# vpdn enable
VPN_SERVER(config)# vpdn-group pppoe
VPN_SERVER(config-vpdn)# accept-dialin
VPN_SERVER(config-vpdn-acc-in)# protocol pppoe
VPN_SERVER(config-vpdn-acc-in)# virtual-template 1
VPN_SERVER(config-vpdn-acc-in)# exit
VPN_SERVER(config-vpdn)# lcp renegotiation always

3. Configure authentication & ip address pool :

Enable AAA and method-list :

VPN_SERVER(config)# aaa new-model
VPN_SERVER(config)# aaa authentication ppp default local
VPN_SERVER(config)# aaa authorization network default local

Create Username :

VPN_SERVER(config)# username fadly password 0 cisco

Create Ip pool :

VPN_SERVER(config)# ip local pool vpn_sce 192.168.100.1 192.168.100.100

Enable ppp authentication and assign pool :

VPN_SERVER(config)# interface Virtual-Template1
VPN_SERVER(config-if)# peer default ip address pool vpn_sce
VPN_SERVER(config-if)# ppp authentication pap chap

4. Enable pppoe in interface :

VPN_SERVER(config)# interface FastEthernet0/0
VPN_SERVER(config-if)# ip address 172.16.0.11 255.255.128.0 secondary
VPN_SERVER(config-if)# pppoe enable

5. Create pppoe client and Dial from windows XP :


























































6. Verify the pppoe session :

VPN_SERVER#sh user
Line User Host(s) Idle Location
* 66 vty 0 fadly idle 00:00:00 172.16.0.134

Interface User Mode Idle Peer Address
Vi1.1 fadly PPPoE 00:00:00 192.168.100.5

VPN_SERVER#


VPN_SERVER#sh vpdn

PPPoE Tunnel and Session Information Total tunnels 1 sessions 1

PPPoE Session Information
UID SID RemMAC OIntf Intf Session
LocMAC VASt state
278 841 0090.f55d.6dbc Fa0/0 Vi1.1 CNCT_PTA
000d.bd6c.3fc0 UP


VPN_SERVER#

VPN_SERVER#sh sss session
Current SSS Information: Total sessions 1

Uniq ID Type State Service Identifier Last Chg
278 PPPoE/PPP connected Local Term fadly 00:04:18


it is very straight forward :)