The software supports a set of TLVs that are proprietary to Avaya and Extreme Networks.
These TLVs advertise and receive information for Avaya voice over IP (VoIP) telephones, which include powered device (PD) information. Some TLVs are advertised by the switch, and some are advertised by the telephone. The switch starts advertising these proprietary TLVs when you enable LLDP (Link Layer Discovery Protocol) and configure the specified TLVs to be advertised. The switch receives the proprietary TLVs when LLDP is enabled; you do not have to configure the switch to receive individual TLVs.
Avaya–Extreme Networks TLVs
| Name | Comments |
|---|---|
| PoE (Power over Ethernet) conservation level request | When the switch software needs to reduce power on a PoE-enabled port, this TLV advertises that request to the connected Avaya device. |
| Call server | The switch uses this TLV to advertise the IP addresses of up to eight call servers to an Avaya phone. |
| File server | The switch uses this TLV to advertise the IP addresses of up to four file servers to an Avaya phone. |
| 802.1Q framing | The switch uses this TLV to advertise information about Layer 2 priority tagging to an Avaya phone. |
| PoE Conservation level support | An Avaya phone uses this TLV to communicate the current power consumption level and current conservation level for the phone, including typical power value, maximum power value, and available conservation power levels. |
| IP phone address | An Avaya phone uses this TLV to communicate the IP address and mask configured in the phone, as well as a default gateway address. |
| CNA server | An Avaya phone uses this TLV to communicate the IP address of a Converged Network Analyzer (CNA). |
| Fabric Attach (FA) Element | Used by FA elements to advertise their FA capabilities. |
| Fabric Attach (FA) Assignment | Used by FA clients to advertise service requests and by FA proxy and FA server elements to return the status of FA client service requests. |
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