Connectivity Guide

Table 14. Solution ID TLVs (Type – 127, OUI – 0xF8-0xB1-0x56) (continued)
TLV Subtype Description
Product part number 24 Indicates the product part number.
Media endpoint discovery
LLDP-MED provides additional organizationally-specific TLVs to allow endpoint devices and network-connectivity devices to
advertise their characteristics and configuration information.
LLDP-MED devices are located at the IEEE 802 LAN network edge and participate in IP communication service using the
LLDP-MED framework, such as IP phones and conference bridges. LLDP-MED network connectivity devices provide access
to the IEEE 802-based LAN infrastructure for LLDP-MED endpoint devices, such as IP phones. An OS10 device acts as an
LLDP-MED network connectivity device.
LLDP-MED provides network connectivity devices to:
● Manage inventory
● Manage power over ethernet (PoE)
● Identify physical location
● Identify network policy
NOTE: Only the Rx function is supported for managing PoE and identifying the physical location. LLDP-MED is designed for
but not limited to VoIP endpoints.
Network connectivity device
OS10 acts as an LLDP-MED network-connectivity device (Type 4). Network connectivity devices transmit an LLDP-MED
capability TLV to endpoint devices and stores information that endpoint devices advertise.
127/1 — LLDP-
MED capabilities
● If the transmitting device supports LLDP-MED
● What LLDP-MED TLVs are supported
● LLDP device class
127/2 — Network
policy
Application type, VLAN ID, L2 priority, and DSCP value.
127/3 — Local
identification
Physical location of the device expressed in one of three formats:
● Coordinate-based LCI
● Civic address LCI
● Emergency call services ELIN
127/4 —
Extended power-
via-MDI
Power requirements, priority, and power status.
LLDP-MED capabilities TLV
The LLDP-MED capabilities TLV communicates the types of TLVs that the endpoint device and network-connectivity device
support. The value of the LLDP-MED capabilities field in the TLV is a 2–octet bitmap. Each bit represents an LLDP-MED
capability.
LLDP-MED is enabled by default on an interface. If you disable LLDP-MED, use the lldp med enable command to re-enable
it on an interface. The device transmits MED PDUs only when it receives a TLV from a peer. The device does not otherwise
send PDUs — even if you enable MED on an interface.
Layer 2
281