Internet protocol suite |
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Application layer |
Transport layer |
Internet layer |
|
Link layer |
|
Preamble | Destination MAC | Source MAC | Ethertype | Chassis ID TLV | Port ID TLV | Time to live TLV | Optional TLVs | End of LLDPDU TLV | Frame check sequence |
---|---|---|---|---|---|---|---|---|---|
01:80:c2:00:00:0e, or 01:80:c2:00:00:03, or 01:80:c2:00:00:00 | Station's address | 0x88CC | Type=1 | Type=2 | Type=3 | Zero or more complete TLVs | Type=0, Length=0 |
Type | Length | Value |
---|---|---|
7 bits | 9 bits | 0-511 octets |
TLV type | TLV name | Usage in LLDPDU |
---|---|---|
0 | End of LLDPDU | Mandatory |
1 | Chassis ID | Mandatory |
2 | Port ID | Mandatory |
3 | Time To Live | Mandatory |
4 | Port description | Optional |
5 | System name | Optional |
6 | System description | Optional |
7 | System capabilities | Optional |
8 | Management address | Optional |
9–126 | Reserved | - |
127 | Custom TLVs | Optional |
Type | Length | Organizationally unique identifier (OUI) | Organizationally defined subtype | Organizationally defined information string |
---|---|---|---|---|
7 bits—127 | 9 bits | 24 bits | 8 bits | 0-507 octets |