Netgear C3700 – N600 WiFi Cable Modem Router User Manual

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Specify Network Settings 
64
N600 WiFi Cable Modem Router Model C3700 
A login screen displays.
3. 
Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and 
password are case-sensitive.
The BASIC Home screen displays.
4. 
Select ADVANCED > Advanced Setup > UPnP.
5. 
Select the Turn UPnP On check box.
By default, this check box is selected. If the Turn UPnP On check box is cleared, the 
modem router does not allow any device to automatically control router resources, such 
as port forwarding.
6. 
Type 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 have 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.
7. 
Type 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.
8. 
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 has opened. The 
UPnP Portmap Table also displays what type of port is open and whether that port is still 
active for each IP address.
9. 
To refresh the information in the UPnP Portmap Table, click the Refresh button.