Draytek VigorBX 2000 Series, Руководство пользователя

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VigorBX 2000 Series User’s Guide 86
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.
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.
Ping IP – If you choose Ping Detect as detection mode, you
have to type IP address in this field for pinging.
TTL (Time to Live) – Displays value for your reference. TTL
value is set by telnet command.
After finishing all the settings here, please click OK to activate them.
I
I
I
I
-
-
1
1
-
-
2
2
-
-
1
1
0
0
D
D
e
e
t
t
a
a
i
i
l
l
s
s
P
P
a
a
g
g
e
e
f
f
o
o
r
r
I
I
P
P
v
v
6
6
–
– O
O
f
f
f
f
l
l
i
i
n
n
e
e
i
i
n
n
W
W
A
A
N
N
1
1
/
/
W
W
A
A
N
N
2
2
/
/
W
W
A
A
N
N
3
3
/
/
W
W
A
A
N
N
4
4
When Offline is selected, the IPv6 connection will be disabled.