Web Management
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4.2.11.4 LLDP - EEE
By using EEE power savings can be achieved at the expense of traffic latency.
This latency occurs due to that the circuits EEE turn off to save power, need time
LLDP to exchange information about
ective tx and rx "wakeup time ", as a way to agree upon the minimum
is
nformation exchanged by LLDP.
LDP Neighbors EEE Information
he displayed table contains a row for each port. The columns hold the following
formation:
to boot up before sending traffic over the link. This time is called "wakeup time".
To achieve minimal latency, devices can use
their resp
wakeup time they need.
Th page provides an overview of EEE i
L
T
in
Local Port
he port on which LLDP frames are received or transmitted.
T
Tx Tw
he link partner's maximum time that transmit path can hold-off sending data after
eassertion of LPI.
T
d
Rx Tw
he link partner's time that receiver would like the transmitter to hold-off to allow
me for the receiver to wake from sleep.
T
ti
F
T
allback Receive Tw
he link partner's fallback receive Tw.
receiving link partner may inform the transmitter of an alternate desired
w_sys_tx. Since a receiving link partner is likely to have discrete levels for
avings, this provides the transmitter with additional information that it may use
r a more efficient allocation. Systems that do not implement this option default
e value to be the same as that of the Receive Tw_sys_tx.
A
T
s
fo
th
Echo Tx Tw
he link partner's Echo Tx Tw value.
he respective echo values shall be defined as the local link partners reflection
echo) of the remote link partners respective values. When a local link partner
eceives its echoed values from the remote link partner it can determine whether
r not the remote link partner has received, registered and processed its most
ecent 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
T
T
(
r
o
r
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