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Manage the WAN and LAN Network Settings
149
N600 and AC750 WiFi DSL Modem Routers
7. Enter the advertisement period in minutes.
The advertisement period specifies how often the modem router broadcasts its UPnP
information. This value can range from 1 to 1440 minutes. The default period is
30 minutes. Shorter durations ensure that control points detect current device status at
the expense of more network traffic. Longer durations can compromise the freshness of
the device status but can significantly reduce network traffic.
8. Enter the advertisement time to live in hops.
The time to live for the advertisement is measured in hops (steps) for each UPnP packet
sent. Hops are the steps a packet takes between routers. The number of hops can range
from 1 to 255. The default value for the advertisement time to live is 4 hops, which should
be fine for most home networks. If you notice that some devices are not being updated or
reached correctly, it might be necessary to increase this value.
9. Click the Apply button.
The UPnP Portmap Table displays the IP address of each UPnP device that is accessing
the modem router and which ports (internal and external) that device opened. The UPnP
Portmap Table also displays what type of port is open and whether that port is still active
for each IP address.
To refresh the information in the UPnP Portmap table, click the Refresh button.
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