Using the Redirector :: Advanced Options

Update Routing Table

The Serial/IP Redirector can automatically maintain its IP route to a server on a different subnet by modifying the IP routing table.

To change the setting

In the Serial/IP Control Panel:

Click Advanced.
Select the Options tab.
Use the check box Update Routing Table.
Click OK to record the setting.

This setting affects all Serial/IP COM ports that are subsequently opened.

Settings

Enabled (default)

When a virtual COM port is opened, if server is not on the same subnet as the local computer, the redirector inserts into the IP routing table a host route to the server, if such a route does not already exist.
As virtual COM ports are closed, the redirector removes the host route it added, since that route is no longer needed.

Disabled

The redirector does not update the IP routing table.

Notes

Some applications (notably Windows Dial-Up Networking and similar PPP applications) change the local computer's default route in the IP routing table when they establish their connection to the remote network. When this change is made, if the local computer is not on the same subnet as the serial device server, it no longer has a route to the server and Serial/IP Redirector loses its connection to the server. The redirector can solve this problem by creating host routes in the IP routing table.

Such changes to the routing table are not permitted by some VPN software, however. If the local computer is connected to the server through a VPN, the redirector's automatic update of the routing table may need to be disabled, using the Update Routing Table option.

This is a global setting that affects all Serial/IP COM ports.