HP A5120 EI Series Configuration Guide

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Table 26 LLDP-MED TLVs
Type
Description
LLDP-MED Capabilities
Allows a network device to advertise the LLDP-MED TLVs that it
supports
Network Policy
Allows a network device or terminal device to advertise the VLAN ID
of the specific port, the VLAN type, and the Layer 2 priorities for
specific applications
Extended Power-via-MDI
Allows a network device or terminal device to advertise power
supply capability. This TLV is an extension of the Power Via MDI
TLV.
Hardware Revision
Allows a terminal device to advertise its hardware version
Firmware Revision
Allows a terminal device to advertise its firmware version
Software Revision
Allows a terminal device to advertise its software version
Serial Number
Allows a terminal device to advertise its serial number
Manufacturer Name
Allows a terminal device to advertise its vendor name
Model Name
Allows a terminal device to advertise its model name
Asset ID
Allows a terminal device to advertise its asset ID. The typical case is
that the user specifies the asset ID for the endpoint to facilitate
directory management and asset tracking.
Location Identification
Allows a network device to advertise the appropriate location
identifier information for a terminal device to use in the context of
location-based applications
Management address
The network management system uses the management address of a device to identify and manage the
device for topology maintenance and network management. The management address TLV encapsulates
the management address.
How LLDP works
Operating modes of LLDP
LLDP can operate in one of the following modes:
 TxRx mode. A port in this mode sends and receives LLDPDUs.
 Tx mode. A port in this mode only sends LLDPDUs.
 Rx mode. A port in this mode only receives LLDPDUs.
 Disable mode. A port in this mode does not send or receive LLDPDUs.
Each time the LLDP operating mode of a port changes, its LLDP protocol state machine re-initializes. To
prevent LLDP from being initialized too frequently at times of frequent changes to the operating mode, you
can configure a re-initialization delay. With this delay configured, before a port can initialize LLDP, it must
wait for the specified interval after the LLDP operating mode changes.
Transmitting LLDPDUs
An LLDP-enabled port operating in TxRx mode or Tx mode sends LLDPDUs to its directly connected
devices both periodically and when the local configuration changes. To prevent LLDPDUs from

HP A5120 EI Series Specifications

General

Uplink Ports	4 x SFP
Stacking	No
Management	CLI, Web, SNMP
Routing Protocols	RIP, OSPF
Power Supply	AC
MAC Address Table Size	16K
Dimensions	440 x 430 x 44 mm
Operating Temperature	0°C to 45°C
Operating Humidity	10% to 90% non-condensing
Model	HP A5120-24G EI Switch (JG234A)
VLANs	4094