User's Manual

802.1ab Link Layer Discovery Protocol (LLDP) provides the following functionality:
• Periodic transmission of advertisements containing device information, device
capabilities, and media specific configuration information to neighbors attached to the
same network.
• Reception of LLDP advertisements from its neighbors.
• Implementation of behavioral requirements specified by Link Layer Discovery Protocol
Media Endpoint Discovery (LLDP-MED).
• Storage of received data in local data structures, for example, in MIB modules.
TLVs
The information fields in each MIB are contained in a Link Layer Discovery Protocol Data Unit
(LLDPDU) as a sequence of short, variable-length, information elements known as TLVs that
each include type, length, and value fields. Each LLDPDU includes several mandatory TLVs
plus optional TLVs. Optional TLVs may be inserted in any order.
The IP Deskphone supports both the transmit and receive LLDP mode.
Transmit direction
An LLDPDU transmitted by the IP Deskphone supports the following TLVs:
1. Chassis ID
2. Port ID
3. Time To Live
4. End of LLDPPDU
5. Port Description
6. System Description
7. System Capabilities
8. Port VLAN ID
9. Port And Protocol VLAN ID
10. VLAN Name
11. Protocol Identity
12. MAC/PHY Configuration Status
13. Power Via MDI
14. Link Aggregation
15. Maximum Frame Size
16. LLDP-MED Capabilities
17. Network Policy
18. Extended Power-via MDI
802.1ab Link Layer Discovery Protocol
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 199