Owner's Manual

Chapter 6. LLDP | 163
NETGEAR 8800 User Manual
Maximum frame size TLV
You configure this TLV to be advertised or not advertised. This TLV allows the port to
advertise its maximum supported frame size to its neighbors.
When jumbo frames are not enabled on the specified port, the TLV reports a value of 1518
after you configure it to advertise. If jumbo frames are enabled, the TLV inserts the configured
value for the jumbo frames.
LLDP MED TLVs
This section describes the optional LLDP media endpoint discovery (MED) TLVs that you can
configure the switch to transmit.
Note: You must configure the LLDP MED capabilities TLV before any of
the other MED TLVs can be enabled. Also, this TLV must be set to
no-advertise after all other MED TLVs are set to no-advertise.
The switch sends all MED TLVs only after it detects a MED-capable device on the port. The
switch does not automatically send any MED TLVs after it is enabled; the switch must first
detect a MED-capable device on the port.
Network connectivity devices wait for LLDP MED TLVs from endpoints before they send out
LLDP MED TLVs; so two network connectivity devices will not exchange LLDP MED
messages.
The following LLEP MED extension TLVs can be transmitted by the switch:
• LLDP MED capabilities TLV on page 163
• Network policy TLV on page 164
• Location identification TLV on page 164
• Extended power-via-MDI TLV on page 164
Note: You display the values for these TLVs using the show lldp
neighbors detailed command.
LLDP MED capabilities TLV
This TLV allows LLDP MED network connectivity devices to determine that specified
endpoints support LLDP MED, and if so, to discover which LLDP MED TLVs the particular
endpoint device supports and what device class it belongs to.
This TLV must be enabled before any of the other LLDP MED TLVs can be enabled.