Netopia 2200 series Software User's Manual page 218

Below are some specific tests:
From the Gateway's Network
Ping the internet default gateway IP
address
Ping an internet site by IP address
Ping an internet site by name
From a LAN PC:
Ping the Gateway's LAN IP address
Ping the Gateway's WAN IP address
Ping the Gateway's internet default
gateway IP address
Ping an internet site by IP address
Ping an internet site by name
To use the TraceRoute capability, type a destination address (domain
3.
name or IP address) in the text box and click the
218
Action
Tools page:
If PING is not successful, possible causes are:
DSL is down, DSL or ATM settings are incorrect; Gate-
way's IP address or subnet mask are wrong; gateway
router is down.
Gateway's default gateway is incorrect, Gateway's sub-
net mask is incorrect, site is down.
DNS is not properly configured on the Gateway; config-
ured DNS servers are down; site is down.
IP address and subnet mask of PC are not on the same
scheme as the Gateway; cabling or other connectivity
issue.
Default gateway on PC is incorrect.
NAT is off on the Gateway and the internal IP addresses
are private.
PC's subnet mask may be incorrect, site is down.
DNS is not properly configured on the PC, configured
DNS servers are down, site is down.
TraceRoute button.