05-13-2010 10:34 AM - edited 03-04-2019 08:28 AM
We are unable to access the Internet with the 871 Cisco router.
The issue is that our internal network is unable to connect to the Internet.
The setup:
One host is connected to f0
The modem is connected to F4
The modem is connected to the Internet.
The configurations
There are two configurations the first configuration has no pppoe and the second one we added the pppoe in order to connect to the internet. The first with no pppoe worked after we added the following lines:
Router(config)# Access-list 2 permit any
Int f4
Router(config-if)# ip access-group 2 out
Now we want the second configuration with ppoei to work.
We followed the Cisco documentation : http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/pppoenat.html
After following these steps nothing seems to work…..
Nat and pppoe are properly configured.
Testing:
From the host we can ping to the f4.
From the host to the internet we are not able to ping
From the router to the host we are able to ping
From the router to the ISP we are able to ping
The configurations are in the .txt file
Any ideals why this isn’t working?
Thanks
05-14-2010 01:06 AM
hi
Are you able to resolve the hosts from your machine? can you try nslookup from command prompt and try resolving the web addresses.
this will help you to proceed to next step of troubleshooting.
Once you are done with resolving the web address and still if you arent able to access internet try doing a trace to a web address and check where the same is getting stuck.
regds
05-14-2010 09:57 AM
Hi,
Try to debug pppoe events and debug ppp authentication, make sure you are being authenticated. Clean up a bit the configuration, for example, on FE4 use only 'pppoe enable', remove all the ip virtual-reasembly and select the authention type for example only PAP or CHAP.
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