I have a new Cicso 871 Integrated Services Router, fresh out of the box. I need to run this router at the edge as a PPPoE client.
It seems fairly straightforward, I purchase a single static from my ISP, however it's necessary to configure the routers WAN interface as a PPPoE/DHCP client as the IP numbers are handed down post PPP authentication.
Working within Cisco SDM which shipped with the router, I can build the PPPoE dialer in the GUI and initiate/test the connection.
I select PPPoE Dialer under 'configure->interface->Create Connection'
Select 'enable PPPoE encapsulation'
Select 'Dynamic (DHCP Client)'
Select 'PAP Auth. type' and enter the account credentials
Enable 'PAT' and select VLAN1 as the interface to be translated
Select 'Test connectivity after configuring' and click 'finish'
Then the connection test begins, the connection fails however. When I try to enter the IP numbers as statics the router refuses the subnet mask as invalid. That doesn't work for PPPoE anyway but it's one of the things I tried and I mention it because I suspect that when configured as a PPPoE/DHCP client the router is feeling a certain amount of disdain for that 32bit subnet mask. I've read around here that the 32 bit subnet mask is fairly standard for an ISPs PPPoE implementation so I wonder why this router doesn't accept the IP numbers passed down to it after PPP authentication.
As you can see from the output after testing the connection below, the failure is occuring at the point where IP numbers are being assigned to the WAN interface, please correct me if I'm wrong.
Test Activity Details
Checking interface status... Up
Interface physical status :Up
Line protocol status :Up
Checking for DNS settings... Successful
DNS lookup set :Yes
Statically configured DNS servers : 126.96.36.199 188.8.131.52
Dynamically imported DNS servers :None
Checking interface IP address.. Failed
Interface IP address :Not assigned/received
Interface IP address Type :Dynamic
Checking PPPoE tunnel... Up
Session ID :14390
Dialer Interface :Di0
Virtual Access Identifier :Vi1
Virtual Access Status :UP
Troubleshooting Results Failure Reason(s) Recommended Action(s)
No IP address for the interface has been obtained. The interface is configured to obtain an IP address through DHCP. The remote end may not be configured with a DHCP server or the DHCP pool may be empty. Please contact your ISP or WAN administrator and check if the server has been configured to lease IP address to the clients connection through DHCP. Retest connection.
If there is anything to do with the ISP's end of things they're not admitting it to me, and are now to the point where I can purchase their CCNAs support at a premium or I can take a walk. My account at the ISP works like a champ using an off the shelf Linksys WRT54G.
The ISP shows me as successfully authenticated on their end, it's simply applying the IP numbers associated with that PPP account that is unsuccessful. Pinging from the router is unsuccessful either by name or IP number, obviously enough. I'm sure I must be doing something wrong, I can't figure out what that may be. Hopefully someone here has seen or encountered this sort of problem under similar circumstances and can shed some light on the matter for me. If necessary I can provide a show run or anything else someone may be interested in viewing.
Thank you much in advance to anyone who may be able of point me in the right direction here.