Netopia 430 S/T, Reference Manual

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A-4 Netopia ISDN Router Reference Guide
Power outages
If you suspect that power was restored after a power outage, and
the Netopia ISDN Router is connected to a remote site, you may
need to switch the Netopia ISDN Router off and then back on again.
After temporar y power outages, a connection that still seems to be
up may actually be disconnected. Rebooting the Router should
reestablish the connection.
Network problems
This section contains tips on ways you can troubleshoot 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 IP Options screen).
■
Use the Netopia ISDN Router’s ping utility, in the Statistics,
Tests, Utilities screen, and tr y to ping local and remote hosts.
See
“Ping” on page 10-5 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.farallon.com, for example), verify that the DNS ser ver’s
IP address is correct and that it is reachable from the Netopia
ISDN Router (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.
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.