Nortel Networks NN46110-602 manual Problems with name resolution using DNS services

76 Chapter 4 Troubleshooting

Action: Click Connect to re-establish the extranet connection. If this works, the connection was probably lost due to the Idle Timeout configured on the VPN Router. If no data is transferred through the extranet connection for a long period of time, normally 15 minutes or more, the VPN Router automatically disconnects the connection.

If you were unable to successfully re-establish the extranet connection, the dial-up connection may be preventing data from traveling between the VPN Client and the VPN Router. Hang up the dial-up connection and reconnect before you try to re-establish a connection. If you are still unable to connect to the VPN Router, open an MS-DOS Command Prompt and try pinging the VPN Router using the host name or address that you specified in the Destination field. If you receive a Destination Unreachable error message, there is a routing problem at the ISP. If you receive a Request Timed Out error message, the VPN Router is probably not available, and you can contact your network administrator.

Auto disconnect closes the dial-up connection during data transfer activity

Cause: In Windows 95 only, The Microsoft Auto Disconnect feature does not recognize data activity unless it passes through Internet Explorer. Microsoft has documented this as a known problem in Windows 95.

Action: At the remote workstation, disable Auto Disconnect if you are not using Internet Explorer to access data on the remote network. To do this, open the Control Panel and choose the Internet icon. Select the Connection property sheet and deselect Disconnect if idle for.

Problems with name resolution using DNS services

DNS misconfiguration is usually the problem if a client can ping a host using an IP address but not with its host name, or receives messages that the host name cannot be resolved, .

Cause: You cannot configure a DNS server for PPTP or IPsec connections on the VPN Router.

NN46110-602