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New Member

Cisco 1751 PPPoE

Hi Guys.

I hope I’m in the right place, if not please point me to the correct forum section for the questions below.

We have a Cisco 1750, and we like to test this router for a product called VPN lite.

This product calls for a 2 x PPPoE connection over ADSL.

1 connection to your ISP

1 connection to the VPN cloud.

Currently i do not have an ADSL WIC installed as we would just like to test getting the PPPoE configured, is it required?

I'm new to Cisco products, so please bare with me here.


I can connect to the router via telnet and hyper terminal.

At the moment I’m following

And I’m here.

Router#configure terminal
Router(config)#vpdn enable
Router(config)#no vpdn logging
Router(config)#vpdn-group pppoe
Router(config-vpdn-req-in)#protocol pppoe

When I enter vpdn enable, i get the following error.

Invalid input detected at... and it points to the word vpdn.

What am I doing wrong?

Am I even following the correct "how to"

Some more information

za-pta-ciscortr#show version         

Use, duplication

Cisco Internetwork Operating System Software                                          

Image text-base: 0x800080E0, data-base: 0x806DD02C

ROM: System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1)

ROM: C1700 Software (C1700-Y-M), Version 12.1(5)YB1, EARLY DEPLOYMENT RELEASE SO

FTWARE (fc1)

za-pta-ciscortr uptime is 29 minutes

System returned to ROM by power-on

System image file is "flash:c1700-y-mz.121-5.YB1"

cisco 1751 (MPC860P) processor (revision 0x501) with 29492K/3276K bytes of memor


Processor board ID JAD052109PM (1230647778), with hardware revision 7580

M860 processor: part number 5, mask 2

Bridging software.

X.25 software, Version 3.0.0.

1 FastEthernet/IEEE 802.3 interface(s)

1 Serial(sync/async) network interface(s)

32K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2142


Any help would be appreciated


Re: Cisco 1751 PPPoE

I think your IOS version does not support VPDN.

I have checked for the minimum IOS version to support VPDN and ADSL and it the IP PLUS/ADSL feature set, from which you may try:




I think, by the naming convetion of your IOS, that you have only IP feature set.

Can you try to upgrade?

Please tell me if this works out for you!

New Member

Re: Cisco 1751 PPPoE

Thanks Calin.

That explains alot.

I see that in order to download a new IOS i have to get a support contract?

Thats strange? I don't understand why we need to pay in order to get an updated version, unlike other router firmware is free.

Or am i missing something?    

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