SGSW-24x Series User Manual

Table Of Contents
User’s Manual of SGSW-24040 / 24240 Series
77
4.2.7 UPnP Configuration
Configure UPnP on this page.
UPnP is an acronym for Universal Plug and Play. The goals of UPnP are to allow devices to connect seamlessly and to
simplify the implementation of networks in the home (data sharing, communications, and entertainment) and in corporate
environments for simplified installation of computer components. The UPnP Configuration screen in Figure 4-2-9 appears.
Figure 4-2-9 UPnP
Configuration page screenshot
The page includes the following fields:
Object Description
Indicates th
e 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.
Mode
T
he TTL value is used by UPnP to send SSDP advertising messages. Valid
values are in the range of 1 to 255.
TTL
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 a SSDP advertising 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
st
andard it is recommended that such refreshing of advertisements to 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 of 100 to 86400.