User guide

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4.5.7 Application (UPnP)
UPnP NAT and Firewall Traversal allow traffic to pass-thru the ADSL Router for applications
using the UPnP protocol. This feature requires one active DSL connection. In presence of
multiple DSL connections, select the one over, which the incoming traffic will be present, for
example the default Internet connection.
To enable UPnP, you must first have a WAN connection configured. Once a WAN connection
is configured, click Advanced and under Advanced, select UPnP. This will bring up the screen
shown in Figure 13. You must enable UPnP and then select which connection will utilize
UPnP. In this case the PPPoA connection is enabled. See Fig 1-16 .
Figure 1-16 : UPnP
4.5.8 SNTP
SNTP (Simple Network Timing Protocol) is a protocol used to synchronize the system time to
the public SNTP servers. It uses the UDP protocol on port 123 to communicate between clients
and
servers. When the SNTP feature is enabled, your HomePlug Ethernet USB Router will start
querying for the time clock information from the primary SNTP server. If it fails to get a valid
response
within the “timeout” period, it will try for “retry” number of times, before moving to
the Secondary SNTP server. If it fails to get a valid response from Secondary STNP server
within valid retry times, it starts querying Tertiary SNTP server. If it fails to get a valid response
from all the servers, then the program stops. When a valid response is received from one of the
server, the program sleeps for “Polling_interval” amount of minutes, before starting the whole
process again.
Use the following procedures to enable SNTP.
1. Check Enable SNTP.
2. Primary SNTP Server - The IP address or the host name of the primary SNTP server.
3. Secondary SNTP Server - The IP address or the host name of the secondary SNTP server.