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dallen0
Beginner

Need help configuring 1841 Router with a WIC-ADSL1 Module

Hello folks...

I am new to using this forum so please bare with me...

I only know a little about programming a CISCO router but I know the config I setup is not working...

Here is what I want to do...

  • The ISP provides us with IP Addresses via DHCP. Our public address is NOT static so the interface on the DSL Module needs to be provisioned to get a DHCP address with a CLASS C License.
  • The IP address of the Router should be 10.0.0.10 subnet=255.255.255.0
  • The LAN Clients need receive their IP address via DHCP EXCEPT for a range of 100 addresses. The lan Clients only need about 40 DHCP addresses.
  • ONE of the Lan Clients (10.0.0.3) needs to have ports 25, 1723, and others forwarded to it.

Below is the config I am trying to use but I can't even ping the router from the LAN. What am I doing wrong?

Can anyone tell me how to fix this and can you send examples or even rewrite my config for me? I would be grateful!

Please advise...

Dale Allen

41 REPLIES 41
Peter Paluch
Hall of Fame Cisco Employee

Dale,

Paste these commands directly to your router after being in the global configuration mode (you call it up using the configure terminal command):

ip routing

ip cef

interface FastEthernet0/0

ip route-cache

ip route-cache cef

duplex auto

end

I also have a question: Your ADSL PPP configuration is currently performed in the PPPoA style. There is also a more common approach used, the PPPoE. You have to verify with your ISP what kind of PPP is used, as these two encapsulations are not compatible nor interchangeable. Also, is the PVC 0/35 correct? Again, this must be verified against your ISP as there is no default setting.

After these changes, you should at least be able to receive an IP address automatically on your PC if connected to the Fa0/0 interface, and be able to ping the 10.0.0.10. If not, there are probably some physical problems with the connection - in that case, try using the show ip interface brief command and check whether the FastEthernet0/0 interface is reported as up/up. If not, there is a cabling problem.

Best regards,

Peter

Thanks for writing back...

Now I can ping the Fast Ethernet interface and I can telnet into the router from the LAN side but I Cannot ping the Internet even from inside the router.

Here is additional information that might help you...

(BTW:  I am SURE it is PPPoA and not PPPoE.  And I am sure it is 0/35 because I got that off the router they give is for free...)

Please see attached.

Dale

hi dale,

you're not getting an IP via IPCP from your SP.

Dialer1                    unassigned      YES NVRAM  up                    up

check with your SP again for the VPI/VCI. you should have inserted the below on your ATM: pvc 0/X ilmi

Router(config-if)#pvc 0/X ?

  ilmi  Configure the management PVC for this interface

interface ATM0/0/0

no ip address

no ip mroute-cache

no atm ilmi-keepalive

dsl operating-mode auto

pvc 0/35

  encapsulation aal5mux ppp dialer

  dialer pool-member 1

John:

That appears to be the case...  The ISP  won't help me very much because they say they will only support the Thomson  SpeedTouch Modem that is shipped/packaged with the Service.

However they did say that they are providing us our IP address over DHPC and they never heard of "IPCP". Keep in mind that just because they never heard of it before, does not mean that is not what they are using..

In any case, we don't seem to be getting an IP address from them.  What debug can I run that will show the process as it progresses if we are even "Dialing" out to even attempt to get an IP address from them? 

Please advise....


Dale Allen

Peter Paluch
Hall of Fame Cisco Employee

Hi Dale,

Please run the following debugs:

debug ppp negotiation

debug ppp authentication

and then shutdown/unshutdown the Dialer interface. Capture the output and post it here please. You must be either connected directly to the console, or if you telnet into the router, use the terminal monitor command to divert all console messages to your Telnet session.

Thank you!

Best regards,

Peter

First of all I want to thank you for the really great steps you have provided me with.. 

Can I ask you,  is it against the rules to offer you some cash for personal help?  Could I pay  you to get on my computer via Logmein and assist me faster than this forum or is that against someones rules? 

In any case, please see the attached file for the debug results....

Dale

*Aug 18 23:46:04.991: Vi2 DDR: Dialer statechange to up

*Aug 18 23:46:04.991: %DIALER-6-BIND: Interface Vi2 bound to profile Di1

*Aug 18 23:46:04.991: Vi2 PPP: Using dialer call direction

*Aug 18 23:46:04.991: Vi2 PPP: Treating connection as a callout

*Aug 18 23:46:04.991: Vi2 PPP: Phase is ESTABLISHING, Active Open

*Aug 18 23:46:04.991: Vi2 PPP: Authorization required

*Aug 18 23:46:04.991: Vi2 PPP: No remote authentication for call-out

*Aug 18 23:46:04.991: Vi2 LCP: O CONFREQ [Closed] id 131 len 10

*Aug 18 23:46:04.991: Vi2 LCP:    MagicNumber 0x136DAF25 (0x0506136DAF25)

*Aug 18 23:46:06.987: %LINK-3-UPDOWN: Interface Dialer1, changed state to up

*Aug 18 23:46:04.991: Vi2 DDR: Dialer statechange to up

*Aug 18 23:46:04.991: %DIALER-6-BIND: Interface Vi2 bound to profile Di1

*Aug 18 23:46:04.991: Vi2 PPP: Using dialer call direction

*Aug 18 23:46:04.991: Vi2 PPP: Treating connection as a callout

*Aug 18 23:46:04.991: Vi2 PPP: Phase is ESTABLISHING, Active Open

*Aug 18 23:46:04.991: Vi2 PPP: Authorization required

*Aug 18 23:46:04.991: Vi2 PPP: No remote authentication for call-out

*Aug 18 23:46:04.991: Vi2 LCP: O CONFREQ [Closed] id 131 len 10

*Aug 18 23:46:04.991: Vi2 LCP:    MagicNumber 0x136DAF25 (0x0506136DAF25)

*Aug 18 23:46:06.987: %LINK-3-UPDOWN: Interface Dialer1, changed state to up

could  you  please  send  output of  "sh  queuing int  atm0/0/0"?

In addition to this information, please see the attached file...

Thanks in advance...

Dale

dma#sh queueing interface dialer1
Interface Dialer1 queueing strategy: fair
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/0/16 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 42 kilobits/sec

dma#sh queueing interface atm0/0/0
  Interface ATM0/0/0 VC 0/35
  Queueing strategy: fifo
  Output queue 0/40, 0 drops per VC

Hi Dale,

Does Internet work using the Thomsom Speed Touch modem/router?

Either you should demand your ISP with a working config that applies to Cisco routers or hire a reputable IT vendor should you have the cash to spare.

Sent from Cisco Technical Support iPhone App

Thanks John for writing back....

Yes the SpeedTouch connects but it has problems even after replacing it 3 times.  The ISP tells me to leave it plugged directly into the wall and don't use a UPS.  Thats NOT A solution for me because we lose power here a lot (for short periods at a time) and I need it to stay up and running all the time.

I did some digging and I found that the ISP was totally incorrect.  He said we were authenticating using CHAP however I looked at a log on the SPEEDTOUCH and I have listed the log output FROM THE SpeedTouch below...  I believe this sheds new light on our problem...

Special note is how the SPEEDTOUCH seems to RECEIVE a call first and how it says it is using PAP instead of CHAP.

Please review this log and give me some feedback...   AND BTW:  I bought a SmartNet Contract for the unit today.

Thanks again for all your time and attention... Now here is the log... 

(Note to you:  The dates in the event log are not correct because the router is not configured for NTP...)

Device:   Name       TG782
Serial #   1004NTT6Q


Device Configuration:
        Region     Puerto Rico
       
Provider   Basic

Service    Routed PPP   Description: Routed Connection.

Routed Internet Connection:
       
VPI/VCI    0.35
       
Connection Type PPP over ATM (PPPoA)


Internet Account Settings:
       
User Name  CP1004NTT6Q
       
Password   ********


Time  Message

Jan 1 08:41:16 PPP link up (Internet) [64.237.144.116]
Jan 1 08:41:15 PPP PAP Authenticate Ack received
Jan 1 08:41:15 PPP PAP Authenticate Request sent
Jan 1 08:41:00 xDSL linestate up (ITU-T G.992.5; downstream: 5118 kbit/s, upstream: 508 kbit/s; output Power Down: 19.0 dBm, Up: 12.0 dBm; line Attenuation Down: 16.0 dB, Up: 5.5 dB; snr Margin Down: 27.5 dB, Up: 29.5 dB)
Jan 1 08:38:52 PPP link down (Internet) [64.237.147.115]
Jan 1 08:38:10 xDSL linestate down
Jan 1 08:24:08 PPP link up (Internet) [64.237.147.115]
Jan 1 08:24:08 PPP PAP Authenticate Ack received
Jan 1 08:24:07 PPP PAP Authenticate Request sent
Jan 1 08:23:47 xDSL linestate up (ITU-T G.992.5; downstream: 5118 kbit/s, upstream: 508 kbit/s; output Power Down: 19.0 dBm, Up: 12.0 dBm; line Attenuation Down: 16.0 dB, Up: 5.5 dB; snr Margin Down: 27.5 dB, Up: 29.5 dB)
Jan 1 08:02:56 PPP link down (Internet) [65.23.231.32]
Jan 1 08:02:16 xDSL linestate down
Jan 1 05:25:32 PPP link up (Internet) [65.23.231.32]
Jan 1 05:25:32 PPP PAP Authenticate Ack received
Jan 1 05:25:31 PPP PAP Authenticate Request sent
Jan 1 05:25:18 xDSL linestate up (ITU-T G.992.5; downstream: 5118 kbit/s, upstream: 508 kbit/s; output Power Down: 19.0 dBm, Up: 12.0 dBm; line Attenuation Down: 16.0 dB, Up: 5.5 dB; snr Margin Down: 27.5 dB, Up: 29.5 dB)
Jan 1 05:14:23 PPP link down (Internet) [64.237.151.220]
Jan 1 08:38:52 PPP link down (Internet) [64.237.147.115]
Jan 1 08:38:10 xDSL linestate down
Jan 1 08:24:08 PPP link up (Internet) [64.237.147.115]
Jan 1 08:24:08 PPP PAP Authenticate Ack received
Jan 1 08:24:07 PPP PAP Authenticate Request sent

OPPS!

I read the log incorrectly....

Jan 1 08:24:08 PPP PAP Authenticate Ack received

Jan 1 08:24:07 PPP PAP Authenticate Request sent

Jan 1 08:24:08 PPP PAP Authenticate Ack received
Jan 1 08:24:07 PPP PAP Authenticate Request sent

It seems to send first then receive....

Dale

Hi Dale,

Thanks for this info! Unfortunately, your config is left on my laptop. Will review it again soon if your using the right aunthentication protocol.

In the meantime, since you've got a

Smartnet contract, why not open a TAC case?

Sent from Cisco Technical Support iPhone App

I can't open a case for two more long weeks. It takes that long to get the contract

Dale

Sent from my iPhone