Netopia r9100 用户手册
A-2 User’s Reference Guide
Note: If you are attempting to modify the IP address or subnet mask from a previous, successful configuration
attempt, you will need to clear the IP address or reset your Netopia R9100 to the factor y default before
reinitiating the configuration process. For fur ther information on resetting your Netopia R9100 to factor y
default, see
attempt, you will need to clear the IP address or reset your Netopia R9100 to the factor y default before
reinitiating the configuration process. For fur ther information on resetting your Netopia R9100 to factor y
default, see
Console connection problems
Can’t see the configuration screens (nothing appears)
■
Make sure the cable connection from the Netopia R9100’s console por t to the computer being used as a
console is securely connected.
console is securely connected.
■
Make sure the terminal emulation software is accessing the correct por t on the computer that’s being
used as a console.
used as a console.
■
Tr y pressing Ctrl-L or Return or the ▲ up or down▼ key several times to refresh the terminal screen.
■
Make sure that flow control on serial connections is turned off.
Junk characters appear on the screen
■
Check that the terminal emulation software is configured correctly.
■
Check the baud rate. The default values are 9600, N, 8, and 1.
Characters are missing from some of the configuration screens
■
Tr y changing the Netopia R9100’s default speed of 9600 bps and setting your terminal emulation software
to match the new speed.
to match the new speed.
Network problems
This section contains tips for troubleshooting a networking problem.
Problems communicating with remote IP hosts
■
Verify the accuracy of the default gateway’s IP address (entered in the IP Setup or Easy Setup screen).
■
Use the Netopia R9100’s Ping utility, in the Utilities & Diagnostics screen, and tr y to ping local and remote
hosts. See
hosts. See
for instructions on how to use the Ping utility. If you can successfully ping
hosts using their IP addresses but not their domain names (198.34.7.1 but not garcia.netopia.com, for
example), verify that the DNS ser ver’s IP address is correct and that it is reachable from the Netopia
R9100 (use Ping).
example), verify that the DNS ser ver’s IP address is correct and that it is reachable from the Netopia
R9100 (use Ping).
■
If you are using filters, check that your filter sets are not blocking the type of connections you are tr ying to
make.
make.
Local routing problems
■
Obser ve the Ethernet LEDs to see if data traffic flow appears to be normal.
■
Check the WAN statistics and LAN statistics screens to see more specific information on data traffic flow
and address ser ving. See
and address ser ving. See
for more information.