Black Box Managed Gigabit Switch, LGB1126A Application Type Intended use of the application types

Chapter 3: Configuration

•Application Type: Intended use of the application types:

1.Voice - for use by dedicated IP telephony handsets and similar appliances supporting interactive voice services. These devices are typically deployed on a separate VLAN for ease of deployment and enhanced security by isolation from data applications.

2.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.

3.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.

4.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.

5.Softphone Voice - for use by softphone applications on typical data-centric devices, such as PCs or laptops. This class of end points 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.

6.Videoconferencing - for use by dedicated videoconferencing equipment and other similar appliances supporting real-time interactive video/audio services.

7.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.

8.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.

•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.

•VLAN ID: VLAN identifier (VID) for the port as defined in 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 behaviour 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.

•Adding a new policy: Click to add a new policy. Specify the Application type, Tag, VLAN ID, L2 Priority and DSCP for the new policy. Click “Save.“

•Port Policies Configuration: Every port may advertise a unique set of network policies or different attributes for the same network policies, based on the authenticated user identity or port configuration.

•Port: The port number to which the configuration applies.

•Policy ID: The set of policies that apply to a given port. Set policies by checking the corresponding checkboxes.

•Buttons: “Save“: Click to save changes; “Reset“: Click to undo any changes made locally and revert to previously saved values.

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