Configuring Cisco 1801 router for PPPoE

[Rabnawaz Anwar]

Hi,

we have cisco 1801 router and want to configure for PPPoE.As our ISP has provided adsl connection having following settings:

Encapsulation:  PPPoE

Multiplexing:  LLC based

VPI = 0

VCI = 103

Login =xxxxx

Password =xxxxx

IP:  dynamically from ISP

I am new to configure cisco router.Please tell us complete steps for configuring cisco router 1801 for above configuration.                  

[Peter Paluch]

Hello Rabnawaz,

Configuring the 1801 router for PPPoE access to DSL should be fairly easy. However, to know how the interfaces on your 1801 router are currently named and numbered, can you capture the entire output of the show running-config command and post it here?

Thank you!

Best regards,

Peter

[Rabnawaz Anwar]

Here is the configuration:

Current configuration : 1460 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname JSRouter

!

boot-start-marker

boot-end-marker

!

enable secret 5 $1$9fud$zjln8FSnh0hNR8TVxcIqp.

enable password xxxxxx

!

no aaa new-model

!

!

dot11 syslog

no ip routing

!

!

no ip cef

!

!

!

multilink bundle-name authenticated

!

!

!

!

archive

log config

  hidekeys

!

!

!

!

!

interface ATM0

no ip address

no ip route-cache

shutdown

no atm ilmi-keepalive

dsl operating-mode auto

!

interface BRI0

no ip address

encapsulation hdlc

no ip route-cache

shutdown

no cdp enable

!

interface FastEthernet0

no ip address

no ip route-cache

speed auto

full-duplex

no cdp enable

!

interface FastEthernet1

shutdown

no cdp enable

!

interface FastEthernet2

shutdown

no cdp enable

!

interface FastEthernet3

shutdown

no cdp enable

!

interface FastEthernet4

shutdown

no cdp enable

!

interface FastEthernet5

shutdown

no cdp enable

!

interface FastEthernet6

shutdown

no cdp enable

!

interface FastEthernet7

shutdown

no cdp enable

!

interface FastEthernet8

shutdown

no cdp enable

!

interface Vlan1

no ip address

no ip route-cache

shutdown

!

ip forward-protocol nd

!

!

no ip http server

no ip http secure-server

!

!

!

!

!

!

!

control-plane

!

!

line con 0

exec-timeout 0 0

line aux 0

line vty 0 4

password xxxxxx

login

!

no process cpu extended

no process cpu autoprofile hog

end

[Peter Paluch · Accepted solution]

Hi Rabnawaz,

Thank you! Please add the following commands to your configuration after replacing the YOUR_LOGIN and YOUR_PASSWORD with your true ISP credentials (enter the configuration mode first using the enable and configure terminal commands):

ip routing
ip cef
interface atm0
 no shutdown
 pvc 0/103
  pppoe-client dial-pool-number 1
interface dialer0
 dialer pool 1
 encapsulation ppp
 ppp pap sent-username YOUR_LOGIN password YOUR_PASSWORD
 ppp chap hostname YOUR_LOGIN
 ppp chap password YOUR_PASSWORD
 ppp ipcp dns request accept
 ip address negotiated
 ip nat outside
 ip mtu 1492
 ip tcp adjust-mss 1452
interface vlan1
 ip address 192.168.1.1 255.255.255.0
 ip nat inside
 no shutdown

ip access-list standard NAT
 permit 192.168.1.0 0.0.0.255

ip nat inside source list NAT interface dialer0 overload

ip route 0.0.0.0 0.0.0.0 dialer0
ip dhcp excluded-address 192.168.1.1 192.168.1.10
ip dhcp pool LAN
 network 192.168.1.0 /24
 default-router 192.168.1.1
 import all 

This configuration should

1. connect to your ISP using the login and password you were assigned (replace the YOUR_LOGIN and YOUR_PASSWORD with your true credentials for the ISP connection)
2. start assigning addresses to LAN clients from the IP network 192.168.1.0/24, starting with 192.168.1.11
3. perform necessary Network Address Translation to allow internet access

Please try it out and let me know if it worked. Thank you!

Best regards,

Peter

[Rabnawaz Anwar]

Yes it works!!!!!!!!!!!!!!!!!!! Thanks.

But  how to check bandwidth  from cisco router and also its logs to confirm that is everything is ok?

I have checked internet speed from website speedtest.net and it gives about download 0.8 Mbits/sec and upload 0.4Mbits/sec.However my internet connection is 2Mbits/sec.Also how to verify it from checking directly from router.

Also in case of any failure in internet connection.How to check router logs to find out reason of failure.

[Peter Paluch]

Hello,

You are welcome.

Regarding the connection speed - try issuing the show dsl interface atm 0 and post the results here. This command displays information about the physical parameters of the DSL connection. Some vital information may be present there. Also, in general, the pages that measure the alleged speed are often notorious for being imprecise. Try downloading a large file from a server that has no performance bottlenecks itself, for example:

http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.4.5.tar.bz2

In general, it is not possible to verify the download speed from the router itself. The router can tell you about the operation mode of the DSL line and about selected parameters that affect its speed limits, however, performance tests have to be done from a standalone PC.

Regarding the logging, again, the router is not going to store detailed infomation about why the connection failed. In many cases, it does not even know. It is up to you to use various show and debug commands to narrow down the possible cause of the outage.

Would you mind posting your current configuration again? Remove the passwords, though.

Best regards,

Peter

[cemartinezm]

Hi guys,

i'm too i have my speed low, after configure my 1801, normaly the speed average is around 10 to 9 mbps, but with  cisco router the max speed that we get is 6 to 7 mbps, do you have any idea?

Best regards

Cahrlie.

[elmoutaallikbillahtaha]

Hi thank you

it's working even with ROUTER cisco 800.

Thank you for the configuration.

have a good day.