Alcatel Carrier Internetworking Solutions 1000 ADSL Advanced Configurations, Overview, One Tunnel

One Tunnel

Windows 95 and Windows 98 allow you to create only one tunnel at a time. This means that you cannot connect to an ISP and the corporate network simultaneously.

Tunneling within a Tunnel

Tunneling within a tunnel is not possible with Windows 95 because of its single tunnel limitation.

Note:

Windows NT does not share these two limitations. It is possible to create multiple tunnels and simultaneously connect to multiple remote destinations. A tunnel within a tunnel is also possible, assuring better end-to-end security.

Local Connection is Lost

After you create a tunnel, communication with local workstations may be lost. This is because the Windows operating system adds a new default gateway to its routing table. This new default gateway points to the tunnel. Because TCP/IP is designed to use only one default gateway, connection through the original gateway is lost.

When the tunnel is terminated, connection through the original default gateway is reestablished.

You can avoid this problem by manually adding routes to local destinations in the routing table.

ADVANCED CONFIGURATIONS

Overview

Access to an ISP or corporate network typically requires minimal configuration for end-to-end connectivity. However, it is possible to customize settings of the ADSL modem to accommodate specific configurations. The ability to configure parameters in the modem requires a local connection between the modem and the PC.

This connection is made through the Ethernet port of the modem. An IP address is configured to allow a web browser in the PC to communicate to the modem.

The following are options for local connection to the modem: