IFS NS3601-24P/4S GE-DSSG-244 and 244-POE User Manual
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The page includes the following fields:
LLDP Parameters
Object
Description
•
Tx Interval
The switch is periodically transmitting LLDP frames to its neighbors for having the
network discovery information up-to-date. The interval between each LLDP
frame is determined by the
Tx Interval
value. Valid values are restricted to 5 -
32768 seconds.
Default:
30
seconds
This attribute must comply with the following rule:
(Transmission Interval * Hold Time Multiplier)
≤
65536, and Transmission Interval
>= (4 * Delay Interval)
•
Tx Hold
Each LLDP frame contains information about how long the information in the
LLDP frame shall be considered valid. The LLDP information valid period is set to
Tx Hold
multiplied by
Tx Interval
seconds. Valid values are restricted to 2 - 10
times.
TTL in seconds is based on the following rule:
(Transmission Interval * Holdtime Multiplier)
≤
65536.
Therefore, the default TTL is 4*30 = 120 seconds.
•
Tx Delay
If some configuration is changed (e.g. the IP address) a new LLDP frame is
transmitted, but the time between the LLDP frames will always be at least the
value of
Tx Delay
seconds.
Tx Delay
cannot be larger than 1/4 of the
Tx Interval
value. Valid values are restricted to 1 - 8192 seconds.
This attribute must comply with the rule:
(4 * Delay Interval)
≤
Transmission Interval
•
Tx Reinit
When a port is disabled, LLDP is disabled or the switch is rebooted a LLDP
shutdown frame is transmitted to the neighboring units, signaling that the LLDP
information isn't valid anymore.
Tx Reinit
controls the amount of seconds
between the shutdown frame and a new LLDP initialization. Valid values are
restricted to 1 - 10 seconds.
LLDP Port Configuration
The LLDP port settings relate to the currently selected stack unit, as reflected by the page header.
Object
Description
•
Port
The switch port number of the logical LLDP port.
•
Mode
Select LLDP mode.
Rx only
The switch will not send out LLDP information, but LLDP information
from neighbor units is analyzed.
Tx only
The switch will drop LLDP information received from neighbors, but will
send out LLDP information.
Disabled
The switch will not send out LLDP information, and will drop LLDP
information received from neighbors.
Enabled
The switch will send out LLDP information, and will analyze LLDP
information received from neighbors.
•
CDP Aware
Select CDP awareness.
The CDP operation is restricted to decoding incoming CDP frames (The switch
doesn't transmit CDP frames). CDP frames are only decoded if LLDP for the port
is enabled.
Only CDP TLVs that can be mapped into a corresponding field in the LLDP
neighbors table are decoded. All other TLVs are discarded ( Unrecognized CDP
TLVs and discarded CDP frame are not shown in the LLDP statistic. Only ). CDP
TLVs are mapped into LLDP neighbors table as shown below.
CDP TLV "Device ID" is mapped into the LLDP "Chassis ID" field.
CDP TLV "Address" is mapped into the LLDP "Management Address" field. The
CDP address TLV can contain multiple addresses, but only the first address is
shown in the LLDP neighbors table.
Summary of Contents for GE-DSSG-244
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