Draytek VigorNIC 132 series, Руководство пользователя

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VigorNIC 132 Series User’s Guide 39
Available settings are explained as follows:
Item Description
Enable / Disable Click Enable for activating this function. If you click Disable,
this function will be closed and all the settings that you
adjusted in this page will be invalid.
Keep WAN Connection Normally, this function is designed for Dynamic IP
environments because some ISPs will drop connections if
there is no traffic within certain periods of time. Check
Enable PING to keep alive box to activate this function.
PING to the IP - If you enable the PING function, please
specify the IP address for the system to PING it for keeping
alive.
PING Interval - Enter the interval for the system to execute
the PING operation.
WAN Connection
Detection Such function allows you to verify whether network
connection is alive or not through ARP Detect or Ping Detect.
Mode – Choose ARP Detect, Ping Detect or Always On for
the system to execute for WAN detection. If you choose Ping
Detect as the detection mode, you have to type required
settings for the following items.

Ping IP – If you choose Ping Detect as detection mode,
you also can enable this setting to use current WAN
gateway IP address for pinging.
With the IP address(es) pinging, Vigor device can check if
the WAN connection is on or off.

TTL (Time to Live) – Set TTL value of PING operation.
MTU It means Max Transmit Unit for packet.
RIP Protocol
Routing Information Protocol is abbreviated as RIP
（
RFC1058
）
specifying how routers exchange routing tables information.
Click Enable RIP for activating this function.