Draytek Vigor2926, User Manual

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Vigor2926 Series User’s Guide 75
required by some ISPs. Type the name and click Apply.
The maximum length of the name you can set is 47
characters.
UserName Type the username (optional). The maximum length of the
name you can set is 47 characters.
Password Type the password (optional). The maximum length of the
password you can set is 62 characters.
Authentication Select None or PAP or CHAP.
MTU 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 Choose IP 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.
LTE hardware version The hardware version of the embedded LTE module.
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 or Ping Detect 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.