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 / Signaling (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 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.
69
LANCOM GS-2310P/GS-2326(P) User Manual
3 Configuration