Troubleshooting Guide

Instruction Manual

remote machine (the one you dialed from) is automatically assigned the IP address 99.99.99.100 for the PPP session. This, and the IP address of the SV1115IPEXT, cannot be modified. The following TCP/IP port numbers are assigned for a PPP connection, regardless of the settings configured in the Web interface for the LAN or WAN ports:

HTTPS: 443

VNC (clear-text): 5900

VNC (SSL secured): 15900

SSH: 22

Performance Notes

•All images over the PPP connection will be grayscale to conserve bandwidth. If other users are connected while a PPP session is active, their screens will be in grayscale as well. When PPP in inactive, color is automatically re-enabled.

•Some areas of the screen may not be updated as frequently as others, and animations or other auto-updating areas of the screen may appear out-of-focus or “blocky” as a result. Since the area around the mouse pointer is refreshed most frequently, hold the pointer over an area to improve its clarity.

•It may be beneficial to minimize any unnecessary icons, backgrounds, or other clutter on the host computer’s desktop to make the dial-up connection as efficient as possible.

•When the modem feature is enabled, you can use a “line modem” connection on the serial port using a serial cable to begin a PPP session. If you are using the DTE Serial port on the front panel, use a null modem serial cable. If you have disconnected the modem and are using the DCE Serial port on the rear panel for the PPP connection, use a straight through serial cable. When the modem is not actively connected, you can begin a PPP session at up to 460 kbps. To hang up and re-connect the modem, end the PPP session.

•If you need to configure the device over a serial connection while the modem option is enabled, connect a serial cable (see immediately above for instructions on what type of cable to use for the port you are accessing on the SV1115IPEXT) and begin a terminal session following the instructions under Terminal Configuration Using a Serial Cable in this manual. Once connected, you will see the following message:

Expecting a modem, if human, type admin password (Or start PPP)

Type the password for user admin and press Enter. The password will not appear on the screen. The configuration menu will appear. Make the changes you wish or press q and Enter to exit and leave the modem connection active.

The following messages will appear in the system log on the Status screen in the Web interface and may help to diagnose problems with the modem configuration.

Starting PPP (for auth) on port…

Modem is connecting and the PPP login process is starting.