If you experience Point-to-Point Protocol (PPP) connection problems, you can use the checklist to gather error information. This checklist can help you identify error symptoms and resolve PPP connection problems.
Current and relevant information about program temporary fixes (PTFs) and troubleshooting is documented on the TCP/IP for i5/OS® Web site . This Web site provides the latest information that supplements and overrides the information that is contained in this topic.
Option 6 from WRKTCPPTP prints the profile settings.
The ITSO Redbook V4 TCP/IP for AS/400®: More Cool Things Than Ever covers the following PPP problems. It also provides detailed problem resolution information.
To identify the problems and find out the solutions, see the checklist in the following table.
| Problem | Solution |
|---|---|
|
Modem hardware configuration Wrong configuration of dip-switches and other hardware settings | Make sure that the modem is configured for the correct framing type. This can be either Asynchronous or Synchronous. Refer to the modem manual for more information. |
|
Modem AT commands The modem you are trying to use is not in the predefined list of modems in iSeries™ Navigator. | Create a new modem. |
|
PPP users and passwords You are getting user name and password errors when attempting a PPP connection. |
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PPP lines for starting a connection profile Identified PPP lines are used by the same hardware resource. | Remember to vary off other lines using the same hardware resource. |
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PPP protocol Connection errors can occur due to misconfiguration of the PPP protocol. | Investigating the lower-levels of the PPP protocol might be necessary in some situations where the peers are unable to communicate with each other due to a configuration error. If the PPP log or the job log of the PPP job does not show any indication of the problem, you can investigate the problem by using the communications trace function. |
Related concepts
Configuring your modem for PPP Configuring a new modem