User's Manual

C HAPTER 4 | Configuring the Switch
Link Layer Discovery Protocol
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deployment and enhanced security by isolation from data
applications.
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Voice Signaling (conditional) - For use in network topologies
that require a different policy for the voice signaling than for the
voice media. This application type should not be advertised if all
the same network policies apply as those advertised in the Voice
application policy.
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Guest Voice - Support a separate 'limited feature-set' voice
service for guest users and visitors with their own IP Telephony
handsets and other similar appliances supporting interactive
voice services.
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Guest Voice Signaling (conditional) - For use in network
topologies that require a different policy for the guest voice
signaling than for the guest voice media. This application type
should not be advertised if all the same network policies apply
as those advertised in the Guest Voice application policy.
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Softphone Voice - For use by softphone applications on typical
data centric devices, such as PCs or laptops. This class of
endpoints frequently does not support multiple VLANs, if at all,
and are typically configured to use an 'untagged’ VLAN or a
single 'tagged’ data specific VLAN. When a network policy is
defined for use with an 'untagged’ VLAN (see Tagged flag
below), then the L2 priority field is ignored and only the DSCP
value has relevance.
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Video Conferencing
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Streaming Video - For use by broadcast or multicast based
video content distribution and other similar applications
supporting streaming video services that require specific
network policy treatment. Video applications relying on TCP with
buffering would not be an intended use of this application type.
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Video Signaling (conditional) - 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.
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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.
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VLAN ID – VLAN identifier for the port. (Range: 1-4095)