HP A6600 Configuration Manual page 207

Field
FCS
SNAP-encapsulated LLDPDU format
2.
Figure 75 SNAP-encapsulated LLDPDU format
0
The fields in the frame are described in
Table 24 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 TLV sequences. Each carries
a specific type of device information, as shown in
Figure 76 LLDPDU encapsulation format
An LLDPDU can carry up to 28 types of TLVs. Mandatory TLVs include Chassis ID TLV, Port ID TLV, Time To
Live TLV, and End of LLDPDU TLV. Other TLVs are optional.
Description
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
Table 24.
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.
Figure
200
76.
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