Interlogix NS3500-28T-4S User Manual - Manual (Page 328)

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Video Signaling - for use in network topologies that require a separate policy
for the video signaling than for the video media. This application type should
not be advertised if all the same network policies apply as those advertised in
the Video Conferencing application policy.
 VLAN ID VLAN identifier (VID) for the port as defined in IEEE 802.1Q-2003
 Tag
Tag indicating whether the specified application type is using a 'tagged’ or an
'untagged’ VLAN.
Untagged indicates that the device is using an untagged frame format and as
such does not include a tag header as defined by IEEE 802.1Q-2003. In this
case, both the VLAN ID and the Layer 2 priority fields are ignored and only the
DSCP value has relevance.
Tagged indicates that the device is using the IEEE 802.1Q tagged frame
format, and that both the VLAN ID and the Layer 2 priority values are being
used, as well as the DSCP value. The tagged format includes an additional
field, known as the tag header. The tagged frame format also includes priority
tagged frames as defined by IEEE 802.1Q-2003.
 L2 Priority L2 Priority is the Layer 2 priority to be used for the specified application type.
L2 Priority may specify one of eight priority levels (0 through 7), as defined by
IEEE 802.1D-2004. A value of 0 represents use of the default priority as
defined in IEEE 802.1D-2004.
 DSCP DSCP value to be used to provide Diffserv node behavior for the specified
application type as defined in IETF RFC 2474. DSCP may contain one of 64
code point values (0 through 63). A value of 0 represents use of the default
DSCP value as defined in RFC 2475.
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Figure 4-12-11 LLDP MED Network Policy Table Page Screenshot