Operation Manual

Vigor2120 Series User’s Guide
117
Item Description
Access Control
Broadband Access - 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 or Always On.
Mode – Choose ARP Detect or 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.
 Primary/Secondary Ping IP – If you choose Ping
Detect as detection mode, you have to type Primary or
Secondary IP address in this field for pinging.
 Ping Gateway 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 router can check
if the WAN connection is on or off.
 TTL (Time to Live) – Set TTL value of PING
operation.
 Ping Interval – Type the interval for the system to
execute the PING operation.
 Ping Retry – Type the number of times that the system
is allowed to execute the PING operation before WAN
disconnection is judged.
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.
WAN IP Network
Settings
This group allows you to obtain an IP address automatically
and allows you type in IP address manually.
WAN IP Alias - If you have multiple public IP addresses
and would like to utilize them on the WAN interface, please
use WAN IP Alias. You can set up to 8 public IP addresses
other than the current one you are using.
Obtain an IP address automatically – Click this button to
obtain the IP address automatically if you want to use
Dynamic IP mode.