R211x-HP Flexfabric 11900 Layer 2 - LAN Switching Configuration Guide

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LLDPDU formats
LLDP sends device information in LLDPDUs. LLDPDUs are encapsulated in Ethernet II or SNAP frames.
1. LLDPDU encapsulated in Ethernet II
Figure 49 Ethernet II-encapsulated LLDPDU
Table 11 Fields in an Ethernet II-encapsulated LLDPDU
Field Descri
p
tion
Destination MAC address
MAC address to which the LLDPDU is advertised. To distinguish between
LLDP packets sent and received by different agent types on the same
interface, LLDP specifies different multicast MAC addresses as destination
MAC addresses for LLDP packets to agents of different types. It is fixed to
multicast MAC address 0x0180-C200-000E for LLDP packets destined for
the nearest bridge neighbor, 0x0180-C200-0000 for LLDP packets
destined for the nearest customer bridge neighbor, or
0x0180-C200-0003 for LLDP packets destined for the nearest TPMR
bridge neighbor.
Source MAC address MAC address of the sending port.
Type Ethernet type for the upper layer protocol. It is 0x88CC for LLDP.
Data LLDPDU.
FCS
Frame check sequence, a 32-bit CRC value used to determine the validity
of the received Ethernet frame.
2. LLDPDU encapsulated in SNAP
Figure 50 SNAP-encapsulated LLDPDU