Nortel Networks NN46110-602 - Manual (Page 79)

Chapter 4 Troubleshooting 79
Nortel VPN Router Troubleshooting
Alternatively, on NT 4.0, Windows 98, and Windows 95, complete the following
steps to change your workstation to be a member of a workgroup instead of a
domain:
1 From the Start menu, select Settings
> Control Panel. In the Control Panel,
double-click Network.
The Network Control Panel applet appears.
2 Select the Identification tab. In Windows 95, you can modify the entries on
the Identification tab; on NT 4.0, you must click Change to change the
entries.
3 Change to use a Workgroup and verify that the computer name does not
match the entry on the remote network. The name for the workgroup is not
important; you can enter anything.
4 Click OK to save the changes and reboot the machine.
5 When accessing a resource on the remote domain, if you are prompted for a
user name and password, the domain name must precede the user ID. For
example, if the user ID is JSmith and you are accessing a machine on the
remote domain named CORP, enter your user name as CORP\JSmith.
Diagnosing WAN link problems
WAN link problems can occur between the VPN Router and the public data
network (PDN) at three levels:
1 T1/V.35 interface
2 HDLC framing
3 PPP layer
If a connectivity problem occurs with the WAN link, there are two approaches to
diagnosing and correcting the problem.
• Start from the bottom to verify that physical connectivity exists, then make
sure that the HDLC link is up, and finally examine the PPP status to see if it is
passing IP packets back and forth.