HP A5120 EI Series Configuration Guide

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Table 21 Description of the fields in an Ethernet II-encapsulated LLDPDU
Field
Description
Destination MAC address
The MAC address to which the LLDPDU is advertised. It is fixed to 0x0180-
C200-000E, a multicast MAC address.
Source MAC address
The MAC address of the sending port. If the port does not have a MAC
address, the MAC address of the sending bridge is used.
Type
The Ethernet type for the upper layer protocol. It is 0x88CC for LLDP.
Data
LLDP data unit (LLDPDU)
FCS
Frame check sequence, a 32-bit CRC value used to determine the validity of
the received Ethernet frame
2. SNAP-encapsulated LLDPDU format
Figure 55 SNAP-encapsulated LLDPDU format
Data = LLDPU
(n bytes)
0
Destination MAC address
Source MAC address
Type
15 31
FCS
Table 22 Description of the fields in a SNAP-encapsulated LLDPDU
Field
Description
Destination MAC address
The MAC address to which the LLDPDU is advertised. It is fixed to 0x0180-
C200-000E, a multicast MAC address.
Source MAC address
The MAC address of the sending port. If the port does not have a MAC
address, the MAC address of the sending bridge is used.
Type
The SNAP type for the upper layer protocol. It is 0xAAAA-0300-0000-88CC
for LLDP.
Data
LLDPDU
FCS
Frame check sequence, a 32-bit CRC value used to determine the validity of
the received Ethernet frame
LLDPDUs
LLDP uses LLDPDUs to exchange information. An LLDPDU comprises multiple type, length, and value (TLV)
sequences. Each TLV carries a type of device information, as shown in Figure 56.

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