Draytek Vigor2762 series User Manual page 79

MTU
RIP Protocol
TTL
WAN IP Network Settings
Vigor2762 Series User's Guide
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.
It means Max Transmit Unit for packet.
Path MTU Discovery – It is used to detect the maximum
MTU size of a packet not to be segmented in specific
transmit path.
Click Detect to open the following dialog.
 Path MTU to – Type the IP address as the specific
transmit path.
MTU reduce size by – It determines the decreasing

size of MTU value. For example, the number specified
in this field is "8". The maximum MTU size is "1500".
After clicking the "detect" button, the system will
calculate and get the suitable MTU value such as 1500,
1492, 1484 and etc., automatically.
Detect – Click it to detect a suitable MTU value

Accept – After clicking it, the detected value will be

displayed in the field of MTU.
Routing Information Protocol is abbreviated as
RIP（RFC1058）specifying how routers exchange routing
tables information. Click Enable RIP for activating this
function.
Change the TTL value – Enable or disable the TTL (Time to
Live) for a packet transmitted through Vigor router.
Enable - TTL value will be reduced (-1) when it passess
through Vigor router. It will cause the client, accessing
Internet through Vigor router, be blocked by certain ISP
when TTL value becomes "0".
Disable – TTL value will not be reduced. Then, when a
packet passes through Vigor router, it will not be cancelled.
That is, the client who sends out the packet will not be
blocked by ISP.
This group allows you to obtain an IP address automatically
and allows you type in IP address manually.
Obtain an IP address automatically – Click this button to
obtain the IP address automatically if you want to use
Dynamic IP mode.

Router Name: Type in the router name provided
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