2N Wireless 3G router 2N EasyRoute_old design - User manual, 1571 v1.06 - Manual (Page 68)

Table of Programmable Parameters 3.2
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DDNS
Dynamic DNS is a system that is used for updating the server records on the
Internet domain in real time. The DDNS allows you to use a stable DNS name
instead of a variable IP address.
Enable
Enable/disable the use of the dyndns.org server by 2N ® EasyRoute.
Username
Enter the username for DDNS connection. The user must be registered with the
dyndns.org server.
Password
Enter the access password for DDNS connection. The password must correspond
with the user password on the dyndns.org server.
Host Name
Enter the name that will be part of the gateway domain name on the DDNS. A
complete domain name is as follows: here_enter.dyndns.org
Period
Set a time interval for periodical DDNS data updating. After this time, the gateway
sends updated IP address information to the dyndns.org server.
VRRP
VRRP (Virtual Router Redundancy Protocol) is a protocol increasing the availability
of the default gateway, which provides the user service in a certain network
segment. For a correct function, there must be two servers at least in the
segment – one master and one backup.
Enable
Enable/disable the use of the VRRP in 2N ® EasyRoute.
Virtual IP
Set the IP address of the virtual server. One and the same address should be set
here for all the devices that are to work as servers.
ID
Set the gateway ID to be displayed as server identification in the given network
segment. Each server should have a unique ID.
Priority
Set the server priority. A higher number means a higher priority. The device with
priority 255 must be available in the network and is regarded as the master. The
other priority numbers need not be assigned sequentially. Priorities should not be
multiplied in the given network segment.
Enable preempt mode
Enable/disable return to the master upon its recovery.