Solved: Re: Configuring Cisco 1941 with PPPoE using FTTC in Australia

ManIDE661 · ‎01-21-2020

Im trying installing a Cisco 1941 onto the Australian NBN using PPPoE with FTTC (IPrimus)

Edit.

Now all working Please see second post for solution

*************************************** Original Posting ************************
I Read up and configured what Ive worked out from my IPS (Internet Service Provider) supplied modem.

The Cisco 1941 Port assignment

GigabitEthernet0/0 = WAN and connect to network port on NBNCo modem
GigabitEthernet0/1 = LAN
I'm not using the serial interface (it came with this router)

My current problem is there is no PPP activity on the WAN connection.
I have Enable debug ppp negotiation and debug ppp authentication but getting no PPP logging via the Serial Console.
I have upgraded the firmware to the latest no change.
I changed the MAC address of GigabitEthernet0/0 to mimic IPS MAC thinking the IPS was checking their modem is present
I Tagged and assigned GigabitEthernet0/0 to VLAN 100
I then tried setting GigabitEthernet0/0 with a static (same IP as IPS issues )
but still not attempting to connect.

I think my first problem is with the dialer 1 setup not initiating negatiation for PPP

I have included my current 1941 config and the IPS original router config (in part)

If some one can point me in the right direction or any help would be appreciated.

Router#show running-config
Building configuration...

Current configuration : 3543 bytes
!
version 15.8
hostname Router
!
boot-start-marker
boot system flash0:c1900-universalk9-mz.SPA.158-3.M3.bin
boot-end-marker
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
description $ES_WAN$
mac-address 2289.2289.2289
no ip address
ip virtual-reassembly in
duplex auto
speed auto
vlan-id dot1q 100
exit-vlan-config
!
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface GigabitEthernet0/1
ip address 192.168.1.2 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
no ip address
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description $ES_LAN$
no ip address
!
interface Dialer1
ip address 185.185.185.185 255.255.255.0
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
!
!
control-plane
!
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

IPS Router Config below

Georg Pauwen · ‎01-29-2020

Hello,

make the changes in bold to the configuration. The router can be the DHCP server for clients connected to any FastEthernet port. Since these ports are in Vlan 1 by default, the LAN IP address is assigned to the Vlan 1 interface.

Typically, the dialer is configured with 'ip address negotiated'.

ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool LAN
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 4.2.2.2
!
vlan 100
name NBN
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description LAN
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
interface Vlan 100
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp ipcp dns request
ppp ipcp route default
no cdp enable
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer 1 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

View solution in original post

Georg Pauwen · ‎01-21-2020

Hello,

I think you need to configure one of the switchports as the uplink (FastEthernet0/1/0 in the example below) and set it as a trunk. You then need to create Vlan 100 and bind the dialer to that Vlan interface. I have marked the important parts in bold.

That said, I am not sure if you can configure interface GigabitEthernet0/0 as a switchport, check if it takes the command 'switchport' and lets you configure a trunk. If that is possible, use GigabitEthernet0/0 instead of FastEthernet0/1/0...

vlan 100
name NBN
!
interface GigabitEthernet0/1
ip address 192.168.1.2 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description $ES_LAN$
no ip address
!
interface Vlan 100
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address 185.79.123.11 255.255.255.0
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer 1 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

ManIDE661 · ‎01-24-2020

I cleared the router and added the above.

had 2 issues.

1)When entering the command

"Router(config-if)#pppoe-client dial-pool-number 1"

The below warning was produced, not sure if its causing other problems.
"%The preferred method for configuring a pppoe-client is on an ethernet sub-inter
face"

2)I think the uplink has been linked to Vlan1 and not Vlan100 from the CLI log.

*Jan 24 10:41:20.383: %LINK-3-UPDOWN: Interface FastEthernet0/1/0, changed state
to up
*Jan 24 10:41:21.883: %DTP-5-TRUNKPORTON: Port Fa0/1/0 has become dot1q trunk
*Jan 24 10:41:22.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0/1/0, changed state to up
*Jan 24 10:41:52.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to up

I have also enabled the ppp debugging but no ppp transaction are displayed in the CLI.

Questions.

Have I got the correct config for Vlan100 ?

You are correct I can't configure the Gigabit port as a trunk, this may be a problem a I intend to upgrade to a 100Mbit Plan Later.

Georg Pauwen · ‎01-24-2020

Hello,

I assume you do not have connectivity yet ? Can you post the current running configuration as well as the output of 'debug ppp negotiation' ?

ManIDE661 · ‎01-24-2020

Hi, yes still no connectivity.

Also no ppp measages in the CLI

Looking at the running config something went wrong with the "Vlan 100" call, when i entered the line it didnt produce an error but look like its been ignored.

No sure if I need to wipe config and reenter as "Vlan100" ?

show running-config
!

boot system flash0:c1900-universalk9-mz.SPA.158-3.M3.bin

!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 192.168.1.2 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
!
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
no ip address
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description $ES_LAN$
no ip address
!
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address 185.185.185.185 255.255.255.0
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

Router#

Georg Pauwen · ‎01-24-2020

Hello,

your configuration does not use Vlan 100, did you actually try that as posted in the config I suggested earlier ? I don't think Vlan 1 is going to work. Try and configure the router EXACTLY as below:

vlan 100
name NBN
!
interface GigabitEthernet0/1
ip address 192.168.1.2 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description $ES_LAN$
no ip address
!
interface Vlan 100
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address 185.79.123.11 255.255.255.0
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer 1 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

Georg Pauwen · ‎01-25-2020

We are getting there, it is negotiating an IP address, which means the physical part is ok now. I'll check what the debug output means...

Edit: I am not from Australia, but as far as I know, NBN is the wholesaler ? Who is the actual ISP ?

ManIDE661 · ‎01-25-2020

Good Morning.

I'm with IPrimus

I have requested setup info from them but they can only give me my username and password.

Attach is my modem setup screen shot.

I'm under the impression the service is also tagged in vlan 100

When I get back in i'll try the following but not sure under what interface to insert it

mac-address 2289.2289.2289

vlan-id dot1q 100

EDIT:

Never tried this as a Trunk an old Cisco term for for Tagging

And the mac address is ignored in the ppp handshaking

Georg Pauwen · ‎01-25-2020

Hello,

in any case, that command should go under the interface you connect to the uplink, so if you keep the configuration, that would be interface FastEthernet0/1/0. I am not sure though that this will work. I'll try and find out what settings IPrimus uses...

Georg Pauwen · ‎01-25-2020

Hello,

try and add the lines in bold to your dialer configuration:

vlan 100
name NBN
!
interface GigabitEthernet0/1
ip address 192.168.1.2 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description $ES_LAN$
no ip address
!
interface Vlan 100
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address 185.79.123.11 255.255.255.0
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp ipcp dns request
ppp ipcp route default
no cdp enable
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer 1 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

ManIDE661 · ‎01-28-2020

Great news looks like its working, I say this because its negotiated the DNS info and IP Address (log attaced below).

But i still cant get internet connectivity on Gi0/1.

At present i have a static IP assigned, I thought in the below log an IP address was issued from the ISP, so I added the lines "no ip address" to the Dialer1 interface & "ppp ipcp address request".

This didn't result in the automatic issues of the IP address, i have restored the config and removed these entries.

Question:

How do I get and automatic IP issued for Interface "Dialer1" ?

How do I allow internet access to a network port like FastEthernet 0/1/1 ect.?

+++++++++++++++++++++++++++++++++++++++++++Log File ++++++++++++++++++++++++

*Jan 28 12:13:11.155: %DIALER-6-BIND: Interface Vi2 bound to profile Di1
*Jan 28 12:13:11.159: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up
*Jan 28 12:13:11.159: Vi2 PPP: Sending cstate UP notification
*Jan 28 12:13:11.159: Vi2 PPP: Processing CstateUp message
*Jan 28 12:13:11.167: PPP: Alloc Context [1234567890AB]
*Jan 28 12:13:11.167: ppp1 PPP: Phase is ESTABLISHING
*Jan 28 12:13:11.167: Vi2 PPP: Using dialer call direction
*Jan 28 12:13:11.167: Vi2 PPP: Treating connection as a callout
*Jan 28 12:13:11.167: Vi2 PPP: Session handle[1234567890AB} Session id[1]
*Jan 28 12:13:11.167: Vi2 LCP: Event[OPEN] State[Initial to Starting]
*Jan 28 12:13:11.167: Vi2 PPP: No remote authentication for call-out
*Jan 28 12:13:11.167: Vi2 LCP: O CONFREQ [Starting] id 1 len 24
*Jan 28 12:13:11.167: Vi2 LCP: MRU 1492 (1234567890AB)
*Jan 28 12:13:11.167: Vi2 LCP: MagicNumber 0x1234567890AB (0x1234567890AB)
*Jan 28 12:13:11.167: Vi2 LCP: Event[UP] State[Starting to REQsent]
*Jan 28 12:13:11.175: Vi2 LCP: I CONFREQ [REQsent] id 1 len 12
*Jan 28 12:13:11.175: Vi2 LCP: MRU 1492 (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: AuthProto CHAP (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: MagicNumber 0x1234567890AB (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: O CONFACK [REQsent] id 1 len 29
*Jan 28 12:13:11.175: Vi2 LCP: MRU 1492 (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: AuthProto CHAP (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: MagicNumber 0x1234567890AB (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: Event[Receive ConfReq+] State[REQsent to ACKsent]
*Jan 28 12:13:11.175: Vi2 LCP: I CONFACK [ACKsent] id 1 len 24
*Jan 28 12:13:11.175: Vi2 LCP: MRU 1492 (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: MagicNumber 0x1234567890AB (0x1234567890AB)
*Jan 28 12:13:11.175: Vi2 LCP: Event[Receive ConfAck] State[ACKsent to Open]
*Jan 28 12:13:11.191: Vi2 PPP: No authorization without authentication
*Jan 28 12:13:11.191: Vi2 PPP: Phase is AUTHENTICATING, by the peer
*Jan 28 12:13:11.191: Vi2 LCP: State is Open
*Jan 28 12:13:11.211: Vi2 CHAP: I CHALLENGE id 1 len 25 from "author"
*Jan 28 12:13:11.211: Vi2 PPP: Sent CHAP SENDAUTH Request
*Jan 28 12:13:11.211: Vi2 PPP: Received SENDAUTH Response FAIL
*Jan 28 12:13:11.211: Vi2 CHAP: Using hostname from interface CHAP
*Jan 28 12:13:11.211: Vi2 CHAP: Using password from interface CHAP
*Jan 28 12:13:11.211: Vi2 CHAP: O RESPONSE id 1 len 91 from "myusername@ISP.com.au"
*Jan 28 12:13:11.247: Vi2 CHAP: I SUCCESS id 1 len 5
*Jan 28 12:13:11.251: Vi2 PPP: Phase is FORWARDING, Attempting Forward
*Jan 28 12:13:11.251: Vi2 PPP: Queue IPCP code[1] id[1]
*Jan 28 12:13:11.251: Vi2 PPP: Phase is ESTABLISHING, Finish LCP
*Jan 28 12:13:11.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up
*Jan 28 12:13:11.251: Vi2 PPP: Phase is UP
*Jan 28 12:13:11.251: Vi2 IPCP: Protocol configured, start CP. state[Initial]
*Jan 28 12:13:11.251: Vi2 IPCP: Event[OPEN] State[Initial to Starting]
*Jan 28 12:13:11.251: Vi2 IPCP: O CONFREQ [Starting] id 1 len 22
*Jan 28 12:13:11.251: Vi2 IPCP: Address 0.0.0.0 (0x1234567890AB)
*Jan 28 12:13:11.251: Vi2 IPCP: PrimaryDNS 0.0.0.0 (0x1234567890AB)
*Jan 28 12:13:11.251: Vi2 IPCP: SecondaryDNS 0.0.0.0 (0x1234567890AB)
*Jan 28 12:13:11.251: Vi2 IPCP: Event[UP] State[Starting to REQsent]
*Jan 28 12:13:11.251: Vi2 PPP: Process pending ncp packets
*Jan 28 12:13:11.251: Vi2 IPCP: Redirect packet to Vi2
*Jan 28 12:13:11.251: Vi2 IPCP: I CONFREQ [REQsent] id 1 len 10
*Jan 28 12:13:11.251: Vi2 IPCP: Address DNS.DNS.DNS.DNS (0x1234567890AB1)
*Jan 28 12:13:11.251: Vi2 IPCP: Accept the peer address DNS.DNS.DNS.DNS
*Jan 28 12:13:11.255: Vi2 IPCP: O CONFACK [REQsent] id 1 len 10
*Jan 28 12:13:11.255: Vi2 IPCP: Address DNS.DNS.DNS.DNS (0x1234567890AB)
*Jan 28 12:13:11.255: Vi2 IPCP: Event[Receive ConfReq+] State[REQsent to ACKsent]
*Jan 28 12:13:11.259: Vi2 IPCP: I CONFNAK [ACKsent] id 1 len 22
*Jan 28 12:13:11.259: Vi2 IPCP: Address 185.185.185.185 (0x1234567890AB)
*Jan 28 12:13:11.259: Vi2 IPCP: PrimaryDNS DNS.DNS.DNS.DNS (0x1234567890AB)
*Jan 28 12:13:11.259: Vi2 IPCP: SecondaryDNS DNS.DNS.DNS.DNS (0x1234567890AB)
*Jan 28 12:13:11.259: Vi2 IPCP: O CONFREQ [ACKsent] id 2 len 25
*Jan 28 12:13:11.259: Vi2 IPCP: Address 185.185.185.185 (0x1234567890AB)
*Jan 28 12:13:11.259: Vi2 IPCP: PrimaryDNS DNS.DNS.DNS.DNS (0x8106CB864042)
*Jan 28 12:13:11.259: Vi2 IPCP: SecondaryDNS DNS.DNS.DNS.DNS (0x8306CB864142)
*Jan 28 12:13:11.259: Vi2 IPCP: Event[Receive ConfNak/Rej] State[ACKsent to ACKsent]
*Jan 28 12:13:11.267: Vi2 IPCP: I CONFACK [ACKsent] id 2 len 28
*Jan 28 12:13:11.267: Vi2 IPCP: Address 185.185.185.185 (0x1234567890AB)
*Jan 28 12:13:11.267: Vi2 IPCP: PrimaryDNS DNS.DNS.DNS.DNS (0x1234567890AB)
*Jan 28 12:13:11.267: Vi2 IPCP: SecondaryDNS DNS.DNS.DNS.DNS (0x1234567890AB)
*Jan 28 12:13:11.267: Vi2 IPCP: Event[Receive ConfAck] State[ACKsent to Open]
*Jan 28 12:13:11.287: Vi2 IPCP: State is Open
*Jan 28 12:13:11.287: Di1 IPCP: Install default route thru DNS.DNS.DNS.DNS
*Jan 28 12:13:11.287: Di1 Added to neighbor route AVL tree: topoid 0, address DNS.DNS.DNS.DNS
*Jan 28 12:13:11.287: Di1 IPCP: Install route to DNS.DNS.DNS.DNS

Georg Pauwen · ‎01-29-2020

Hello,

make the changes in bold to the configuration. The router can be the DHCP server for clients connected to any FastEthernet port. Since these ports are in Vlan 1 by default, the LAN IP address is assigned to the Vlan 1 interface.

Typically, the dialer is configured with 'ip address negotiated'.

ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool LAN
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 4.2.2.2
!
vlan 100
name NBN
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1/0
description WAN Uplink
switchport mode trunk
!
interface FastEthernet0/1/1
no ip address
!
interface FastEthernet0/1/2
no ip address
!
interface FastEthernet0/1/3
no ip address
!
interface Vlan1
description LAN
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
interface Vlan 100
description WAN
no ip address
ip nat outside
ip virtual-reassembly in
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname myname@ISP.com.au
ppp chap password 0 password1234
ppp ipcp dns request
ppp ipcp route default
no cdp enable
ppp pap sent-username myname@isp.com.au password 0 password1234
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list 1 interface Dialer 1 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

ManIDE661 · ‎02-02-2020

Thank you for all The Help, All working very happy.

50chickens · ‎05-13-2020

i have an old cisco 1841 router that i've switched from internode adsl to internode nbn (fttc). internode uses vlan 2 for the pppoe interface.

here's the relevent bits of my config.

interface 0/0 is my lan side. interface 0/1 is connected to the nbn fttc box. interface 0/1.2 signifies vlan 2.

interface FastEthernet0/0
description $ETH-LAN$
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1412
speed auto
full-duplex
no mop enabled
!
interface FastEthernet0/1
description $ETH-WAN$
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.2
description $ETH-WAN$
encapsulation dot1Q 2
ip nat outside
ip virtual-reassembly
ip tcp adjust-mss 1452
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer0
ip address negotiated
ip mtu 1492
ip flow ingress
ip flow egress
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname username_here
ppp chap password 0 xxxxx
ppp pap sent-username username_here password 0 xxxxx
ppp ipcp dns request
ppp ipcp route default

!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0