Hello Community, I've been trying to setup a PPPoE session from my home. I own a 871W which is connected from its fastethernet 4 WAN interfaces to a ADLS modem provided by my ISP. I having difficulties understanding the difference betwen my f4 and dialer 0 interface. Where do I apply the overload for example? on f4 or dialer 0? Where do I apply my router default route f4 or dialer 0? If anyone could explain the difference or relationship between these 2 interfaces I will be grateful. Please see configs below, also please note that at the end I posted a PPPoE show output; I dont have a clue if the session is working.  routerA#sh running-config Building configuration... Current configuration : 1608 bytes ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname routerA ! boot-start-marker boot-end-marker ! enable secret 5 $1$oEiU$ibFel1m0vRKS8z7AGeEK4. ! no aaa new-model ! resource policy ! ip subnet-zero ip cef ! ! no ip domain lookup ! ! ! username  ! ! ! ! ! interface FastEthernet0 ! interface FastEthernet1 ! interface FastEthernet2 ! interface FastEthernet3 (I've configured switchport access vlan 1 for this interface)  duplex full  speed 100 ! interface FastEthernet4  ip address dhcp  ip nat outside  ip virtual-reassembly  speed 100  full-duplex  pppoe enable group global  pppoe-client dial-pool-number 1 ! interface Dot11Radio0  no ip address  speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0  station-role root ! interface Dot11Radio0.10  encapsulation dot1Q 1 native  shutdown  no snmp trap link-status ! interface Vlan1  ip address 192.168.1.1 255.255.255.0 ! interface Dialer0  ip address negotiated  ip mtu 1492  ip nat outside  ip virtual-reassembly  encapsulation ppp  ip tcp adjust-mss 1452  dialer pool 1  ppp authentication chap callin  ppp chap hostname {myusername}  ppp chap password 7 {mypassword} ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer0 ! no ip http server no ip http secure-server ip nat inside source list 1 interface Dialer0 overload ! access-list 1 permit 192.168.1.0 0.0.0.255 no cdp advertise-v2 ! control-plane ! ! line con 0  logging synchronous  login local  no modem enable line aux 0 line vty 0 4  login ! scheduler max-task-time 5000 end     routerA#sh pppoe session      1 client session Uniq ID  PPPoE  RemMAC          Port                    VT  VA         State            SID  LocMAC                                      VA-st     N/A      7  d4ca.6d78.317b  Fa4                    Di0  Vi1        N/A                 001c.57f2.3a44                              UP ... View more

Hello, in my home lab, I have a Cisco 871W named cants. I connected cants to my BT (ISP) router (BT.homeblahblah) using the wan link f 4, then I created a vlan 2 and assign it to por f1 on the 871 router. Im unable to ping from that vlan to router 192.168.1.254 which is my bt router. Please see my config file: Building configuration... Current configuration : 1845 bytes ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname cants ! boot-start-marker boot-end-marker ! enable secret 5 ! no aaa new-model ! ! dot11 syslog ip cef ! ! no ip domain lookup ip domain name canterburyhub.local ! ! ! ! no spanning-tree vlan 1 no spanning-tree vlan 2 username username ! ! archive log config   hidekeys ! ! ip ssh version 2 ! ! ! interface FastEthernet0 ! interface FastEthernet1 switchport access vlan 2 ! interface FastEthernet2 switchport mode trunk ! interface FastEthernet3 switchport mode trunk ! interface FastEthernet4 description INTRANET ROUTER CONNECTION ip address 192.168.1.253 255.255.255.0 ip access-group 100 in speed 100 full-duplex ! interface Dot11Radio0 no ip address shutdown speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0 station-role root ! interface Vlan1 ip address 172.16.0.1 255.255.0.0 ! interface Vlan2 ip address 172.18.0.1 255.255.0.0 ! ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 192.168.1.254 ip route 192.168.1.0 255.255.255.0 192.168.1.254 ! no ip http server no ip http secure-server ! access-list 100 permit ip any any access-list 101 permit ip any any ! ! ! control-plane ! banner motd ^CC ********************************************** DO NOT LOG ON ********************************************** ^C ! line con 0 password 7 12290446431C5C162E logging synchronous login no modem enable line aux 0 password 7 12290446431C5C162E login line vty 0 4 password 7 12290446431C5C162E logging synchronous login local transport input ssh ! scheduler max-task-time 5000 end cants#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP        D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area        N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2        E1 - OSPF external type 1, E2 - OSPF external type 2        i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2        ia - IS-IS inter area, * - candidate default, U - per-user static route        o - ODR, P - periodic downloaded static route Gateway of last resort is 192.168.1.254 to network 0.0.0.0 C    172.18.0.0/16 is directly connected, Vlan2 C    192.168.1.0/24 is directly connected, FastEthernet4 S*   0.0.0.0/0 [1/0] via 192.168.1.254 cants#sh ip int brief Interface                  IP-Address      OK? Method Status                Protocol Dot11Radio0                unassigned      YES NVRAM  administratively down down FastEthernet0              unassigned      YES unset  down                  down FastEthernet1              unassigned      YES unset  up                    up FastEthernet2              unassigned      YES unset  up                    down FastEthernet3              unassigned      YES unset  up                    down FastEthernet4              192.168.1.253   YES NVRAM  up                    up Vlan1                      172.16.0.1      YES NVRAM  up                    down Vlan2                      172.18.0.1      YES NVRAM  up                    up Now when I try to ping from a laptop connected using a cable to f 1 I get request timed out. Also when I try to pring from the router, nothing: cants#ping 192.168.1.254 source 172.18.0.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.254, timeout is 2 seconds: Packet sent with a source address of 172.18.0.1 ..... Success rate is 0 percent (0/5) I hope I have given enough information, but please let me know if you need more. I understand the the basics how vlan advertise themselves, I understand the basics of routing, thats why I created 192.168.1.254 (BT router) as my last resort default gateway, so that everything can go there if no other route given. Many thanks in advance. ... View more