Draytek Vigor2862 Series User Manual page 113

Keep WAN Connection
TTL
RIP Routing
Bridge Mode
MAC Address
After finishing all the settings here, please click OK to activate them.
Vigor2862 Series User's Guide
MTU size start from – Determine the starting point

value of the packet. Default setting is 1500.
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.
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.
Change the TTL value – Enable or disable the TTL (Time to
Live) for a packet transmitted through Vigor router.
If enabled - 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".
If disabled – 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.
Routing Information Protocol is abbreviated as RIP （RFC1058）
specifying how routers exchange routing tables information.
Click Enable RIP for activating this function.
Enable Bridge Mode - If the function is enabled, the router
will work as a bridge modem. Yet, the incoming packets with
VLAN tags will be discarded.
Enable Full Bridge Mode – If the function is enabled, the
router will work as a bridge modem which is able to forward
incoming packets with VLAN tags.
Enable Firewall – It is available when Bridge Mode is
enabled. When both Bridge Mode and Firewall check boxes
are enabled, the settings configured (user profiles) under
User Management will be ignored. And all of the filter rules
defined and enabled in Firewall menu will be activated.
Bridge Subnet – Make a bridge between the selected LAN
subnet and such WAN interface.
Default MAC Address: Click this radio button to use default
MAC address for the router.
Specify a MAC Address: Some Cable service providers
specify a specific MAC address for access authentication. In
such cases you need to click the Specify a MAC Address and
enter the MAC address in the MAC Address field.
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