HP A5120 EI Series Configuration Manual page 176

Table 21 Description of the fields in an Ethernet II-encapsulated LLDPDU
Field
Destination MAC address
Source MAC address
Type
Data
FCS
SNAP-encapsulated LLDPDU format
2.
Figure 55 SNAP-encapsulated LLDPDU format
0
Table 22 Description of the fields in a SNAP-encapsulated LLDPDU
Field
Destination MAC address
Source MAC address
Type
Data
FCS
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
Description
The MAC address to which the LLDPDU is advertised. It is fixed to 0x0180-
C200-000E, a multicast 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.
The Ethernet type for the upper layer protocol. It is 0x88CC for LLDP.
LLDP data unit (LLDPDU)
Frame check sequence, a 32-bit CRC value used to determine the validity of
the received Ethernet frame
15
Destination MAC address
Source MAC address
Type
Data = LLDPU
(n bytes)
FCS
Description
The MAC address to which the LLDPDU is advertised. It is fixed to 0x0180-
C200-000E, a multicast 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.
The SNAP type for the upper layer protocol. It is 0xAAAA-0300-0000-88CC
for LLDP.
LLDPDU
Frame check sequence, a 32-bit CRC value used to determine the validity of
the received Ethernet frame
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Figure 56.