User Manual
User Manual rev. 1.0. Feb. 2016
153
Policies
Network Policy Discovery enables the efficient discovery and diagnosis of mismatch issues
with the VLAN configuration, along with the associated Layer 2 and Layer 3 attributes, which
apply for a set of specific protocol applications on that port. Improper network policy
configurations are a very significant issue in VoIP environments that frequently result in voice
quality degradation or loss of service.
Policies are only intended for use with applications that have specific 'real-time' network policy
requirements, such as interactive voice and/or video services.
The network policy attributes advertised are:
1. Layer 2 VLAN ID (IEEE 802.1Q-2003)
2. Layer 2 priority value (IEEE 802.1D-2004)
3. Layer 3 Diffserv code point (DSCP) value (IETF RFC 2474)
This network policy is potentially advertised and associated with multiple sets of application
types supported on a given port. The application types specifically addressed are:
1. Voice
2. Guest Voice
3. Softphone Voice
4. Video Conferencing
5. Streaming Video
6. Control / Signalling (conditionally support a separate network policy for the media types
above)
A large network may support multiple VoIP policies across the entire organization, and different
policies per application type. LLDP-MED allows multiple policies to be advertised per port,
each corresponding to a different application type. Different ports on the same Network
Connectivity Device may advertise different sets of policies, based on the authenticated user
identity or port configuration.
It should be noted that LLDP-MED is not intended to run on links other than between Network
Connectivity Devices and Endpoints, and therefore does not need to advertise the multitude of
network policies that frequently run on an aggregated link interior to the LAN.
Delete :
Check to delete the policy. It will be deleted during the next save.
Policy ID :
ID for the policy. This is auto generated and shall be used when selecting the polices that
shall be mapped to the specific ports.
Application Type :
Intended use of the application types:
1. Voice - for use by dedicated IP Telephony handsets and other 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 Signalling (conditional) - for use in network topologies that require a different policy
for the voice signalling 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 Signalling (conditional) - for use in network topologies that require a different
policy for the guest voice signalling than for the guest voice media. This application type