User's Manual

C HAPTER 5 | Monitoring the Switch
Displaying LLDP Information
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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 142: 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.
The respective echo values shall be defined as the local link partner’s
reflection (echo) of the remote link partner’s respective values. When a
local link partner receives its echoed values from the remote link
partner it can determine whether or not the remote link partner has
received, registered and processed its most recent values. For example,
if the local link partner receives echoed parameters that do not match
the values in its local MIB, then the local link partner infers that the
remote link partner’s request was based on stale information.
◆ Echo Rx Tw – The link partner's Echo Rx Tw value.