FWX120 Operation Manual
175
8
Troubleshooting
Symptom
Cause
Remedy
L2TP/IPsec
connection is
disconnected
immediately.
The signal quality of the
terminal is poor.
Check the signal quality of the terminal,
and move to a place where signal
quality is good.
The disconnection timer of
L2TP/IPsec is set.
Set the disconnection timer of L2TP/
IPsec to an appropriate time.
The keep alive setting of L2TP/
IPsec is inappropriate.
Set the interval and count of the keep
alive of L2TP/IPsec to an appropriate
value.
In places with poor signal quality, the
response of keep alive may be lost
temporarily
Communication
with the terminal
located within the
VPN destination
network cannot
be established.
IP address has not been
acquired.
Check on the terminal whether the IP
address used in the VPN destination
is acquired.
For the confirmation procedure of IP
address, refer to the manual of the
terminal.
Incorrect routing information
has been configured.
Configure the correct destination
LAN network address for the routing
information.
Proxy ARP setting is absent.
Run the proxy ARP in the VPN
destination LAN. (ip lan1 proxyarp on)
In the top page
of the “Basic
configuration
page”, the
message
“Connected” is
not displayed for
the PPTP tunnel
connection.
A private IP address is
assigned by the provider.
You cannot use the PPTP-related
functions in the environment where no
global IP address is assigned to the
product.
Internet connection cannot be
established.
• Check whether the setting for Internet
connection has been configured.
• Troubleshoot according to the
explanation of “Q3 Internet
connection cannot be established”
(page 171).
Communication cannot
be established with the
destination of PPTP
connection.
Execute the ping command to the
destination IP address of PPTP, and
check whether a response is returned.
If no response is returned, check
whether communication is enabled in
the destination device.
