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Vlan frame encapsulation – H3C Technologies H3C S12500-X Series Switches User Manual

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1.

LLDPDU encapsulated in Ethernet II

Figure 49 Ethernet II-encapsulated LLDPDU

Table 11 Fields in an Ethernet II-encapsulated LLDPDU

Field Description

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

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