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Lantronix
SM24TBT2DPA and SM24TBT2DPB Web User Guide
2-21 UPnP
UPnP (Universal Plug and Play) allows devices to connect seamlessly and to simplify implementing
networks in the home (data sharing, communications, and entertainment) and in corporate environments
for simplified installation of computer components.
Caution
: UPnP allows clients in the local network to automatically configure the device. UPnP should only
be used (enabled) if necessary and with preventive measures as it can result in high security risks for your
network.
To configure UPnP in the web UI:
1. Click Configuration, UPnP.
2. Set the mode to Enabled or Disabled.
3. Specify the parameters in each blank field.
4. Click the Apply button to save the settings.
5. To cancel the settings click the Reset button. The page will revert to previously saved values.
Figure 2-21: UPnP Configuration page
Parameter descriptions:
Mode:
Indicates the UPnP operation mode. Possible modes are:
Enabled
:
Enable UPnP mode operation.
Disabled
:
Disable UPnP mode operation.
When the mode is enabled, two ACEs are added automatically to trap UPNP related packets to CPU.
The ACEs are automatically removed when the mode is disabled.
TTL:
The TTL value is used by UPnP to send SSDP advertisement messages. Valid values are 1 - 255.
Advertising Duration:
The duration, carried in SSDP packets, is used to inform a control point or control
points how often it or they should receive an SSDP advertisement message from this switch.
If a control point does not receive any message within the duration, it will think that the switch no longer
exists. Due to the unreliable nature of UDP, in the standard it is recommended that such refreshing of
advertisements be done at less than one-half of the advertising duration. In the implementation, the switch
sends SSDP messages periodically at the interval one-half of the advertising duration minus 30 seconds.
Valid values are in the range 100 - 86400.
Buttons:
Apply
– Click to save changes.
Reset -
Click to undo any changes made locally and revert to previously saved values.