H3C Technologies H3C S10500 Series Switches - Manual (Page 230)

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Table 22 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 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 73 SNAP-encapsulated LLDPDU format
Data = LLDPU
(n bytes)
0
Destination MAC address
Source MAC address
Type
15 31
FCS
Table 23 Fields in a SNAP-encapsulated LLDPDU
Field Description
Destination MAC address
The MAC address to which the LLDPDU is advertised. It is fixed at
0x0180-C200-000E, a multicast MAC address.
Source MAC address The MAC address of the sending port.
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 TLV sequences. Each TLV
carries a type of device information, as shown in Figure 74 .
Figure 74 LLDPDU encapsulation format