Draytek Vigor2136 Series User Manual page 28

Mode
MTU
Mode
use TSPC for network connection. TSPC would connect to tunnel
broker and requests a tunnel according to the specifications inside
the configuration file. It gets a public IPv6 IP address and an IPv6
prefix from the tunnel broker and then monitors the state of the
tunnel in background.
After getting the IPv6 prefix and starting router advertisement
daemon (RADVD), the PC behind this router can directly connect to
IPv6 the Internet.
Tunnel Broker Address – Enter the address for the tunnel

broker IP, FQDN or an optional port number.
Username – It is suggested for you to apply another username

and password for
http://gogonet.gogo6.com/page/freenet6-account.
Password - Enter the password assigned with the user name.

6in4 – Setup 6in4 Static Tunnel for WAN interface.
However, 6in4 offers a prefix outside of 2002::0/16. So, you can use a
fixed endpoint rather than any cast endpoint. The mode has more
reliability.
6rd - Setup 6rd for WAN interface.
IPv6 WAN Connection Detection
Configures how the WAN connection is monitored.
Always On - The router assumes the WAN connection is always active.
NS Detect - The router verifies connectivity by issuing Neighbor
Solicitation packets.
Ping Detect - The router sends an ICMP (Internet Control Message
Protocol) echo request every second to the host, whose address is
specified in the Ping IP field, to verify the WAN connection. If the
remote host does not respond within 30 seconds, the WAN
connection is deemed to have failed.
If you choose Ping Detect as the detection mode, you have to enter
required settings for the following items.
Primary Ping IP – Enter an IP address in this field for pinging.

Secondary Ping IP - Enter an IP address in this field for pinging.

TTL –Time To Live, the maximum allowed number of hops to the

ping destination. Valid values range from 1 to 255.
Ping Interval (Sec, 10-3600) – Enter the interval for the system

to execute the PING operation.
Ping Retry - Enter the number of times that the system is

allowed to execute the PING operation before WAN
disconnection is judged.
MTU
Maximum Transmission Unit, the size of the largest packet, in bytes,
that can be transmitted to the WAN. The maximum value is 1500. For
PPPoE connections, there is always an 8-byte overhead, so the
maximum valid MTU value for PPPoE is 1492.
WAN MAC Address
Default – Use the default MAC address for the WAN port.
Customized - Select this option if your ISP authenticates by MAC
addresses.
MAC - Specify a MAC address for the WAN Ethernet port.

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