Nortel Networks NN46110-602 manual Chapter Troubleshooting

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Chapter 4

Troubleshooting

This chapter introduces the concepts and practices of advanced network configuration and troubleshooting for the Nortel VPN Router. Its purpose is two-fold: to provide configuration details to consult when setting up or modifying the extranet, and to serve as a resource when diagnosing client and network problems.

Typically, there are three types of problems to address when managing an extranet:

•connectivity

•performance

•general

As a network administrator, your primary concern is to maintain connectivity. For extranet access, this means maintaining the secure connections between your remote users and the private intranet serviced by the VPN Router. Performance is another area of concern. Paying attention to performance helps you address issues before they become problems.

Connectivity problems occur when the remote user cannot establish a connection with areas of their private corporate network. There are several points of failure to consider when diagnosing connectivity problems. Problems can range from something as simple as a modem configuration error on the client workstation to a complex HDLC protocol error on the T1 WAN interface.

Nortel VPN Router Troubleshooting