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H3C Technologies H3C S7500E Series Switches User Manual

Page 312

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22-2

Figure 22-1

Ethernet II-encapsulated LLDPDU format

The fields in the frame are described in

Table 22-1

:

Table 22-1

Description of the 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

LLDP data unit (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 22-2

SNAP-encapsulated LLDPDU format

The fields in the frame are described in

Table 22-2

: