User manual

C HAPTER 5 | Monitoring the Switch
Displaying LLDP Information
– 272 –
If it is unknown what power supply the PD device is using, this is
indicated as “Unknown.”
◆ Power Priority – Power Priority represents the priority of the PD
device, or the power priority associated with the PSE type device's port
that is sourcing the power. There are three levels of power priority. The
three levels (Critical, High and Low). If the power priority is unknown,
this is indicated as “Unknown.”
◆ Maximum Power – The maximum power in watts required by a PD
device from a PSE device, or the minimum power a PSE device is
capable of sourcing over a maximum length cable based on its current
configuration.
WEB INTERFACE
To display LLDP neighbor PoE information, click Monitor, LLDP, PoE.
Figure 141: LLDP Neighbor PoE Information
DISPLAYING LLDP
NEIGHBOR EEE
INFORMATION
Use the LLDP Neighbors EEE Information page to displays Energy Efficient
Ethernet information advertised through LLDP messages.
PATH
Monitor, LLDP, EEE
PARAMETERS
These parameters are displayed:
◆ Local Port – The port on this switch which received the LLDP frame.
◆ Tx Tw – The link partner's maximum time that the transmit path can
hold off sending data after de-assertion of Lower Power Idle (LPI)
mode. (Tw indicates Wake State Time)
◆ Rx Tw – The link partner's time the receiver would like the transmitter
to hold off to allow time for it to wake from sleep.
◆ Fallback Receive Tw – The link partner's fallback receive Tw.
A receiving link partner may inform the transmitter of an alternate
desired Tw_sys_tx. Since a receiving link partner is likely to have
discrete levels for savings, this provides the transmitter with additional
information that it may use for a more efficient allocation. Systems that
do not implement this option use a default that is the same as that of
the Receive Tw_sys_tx. (Refer to IEEE 802.3az for further information
on these system variables.)
◆ Echo Tx Tw – The link partner's Echo Tx Tw value.