Transmitting Lldpdus; 802.1Ab Integration - Avaya 4524GT Configuration Manual

Link Layer Discovery Protocol (802.1ab)
You can configure MED network policies on a switch port that has ADAC enabled. The network
policies that you configure have priority over automatically configured ADAC network policies
on a port.

Transmitting LLDPDUs

When a transmit cycle is initiated, the LLDP manager extracts the managed objects from the
LLDP local system MIB and formats this information into TLVs. TLVs are inserted into the
LLDPDU.
LLDPDU are regularly transmitted at a user-configurable transmit interval (tx-interval) or when
any of the variables in the LLPDU is modified on the local system (such as system name or
management address).
Tx-delay is "the minimum delay between successive LLDP frame transmissions."
TLV system MIBs
The LLDP local system MIB stores the information for constructing the various TLVs to be sent.
The LLDP remote systems MIB stores the information received from remote LLDP agents.
LLDPDU and TLV error handling
LLDPDUs and TLVs that contain detectable errors are discarded. TLVs that are not recognized,
but that also contain no basic format errors, are assumed to be validated and are stored for
possible later retrieval by network management.

802.1AB integration

802.1AB integration provides a set of LLDP TLVs for Avaya IP telephone support.
You can select which Avaya IP phone support TLVs can be transmitted from individual switch
ports by enabling or disabling TLV transmit flags for the port. The TLV transmit flags and TLV
configuration operate independently of each other. Therefore, you must enable the transmit
flag on a switch port for a specific TLV, before the port can transmit that TLV to an Avaya IP
phone.
A switch port does not transmit Avaya IP phone support TLVs unless the port detects a
connected Avaya IP phone.
PoE conservation level request TLV
With the PoE conservation level request TLV, you can configure the switch to request that an
Avaya IP phone, connected to a switch port, operate at a specific power conservation level.
The requested conservation level value for the switch can range from 0 to 255, but an Avaya
68 Configuration — System April 2011