SAR-600E ADSL Ethernet Router User Guide
SAR-600E ADSL Router User Guide
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5.5.7
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. You must enable UPnP and
then select which connection will utilize UPnP. In this case the PPPoA connection is enabled.
See
Fig 1-19
.
Figure 1-19 : UPnP
5.5.8
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 SAR-600E 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.
