4.10 LLDP Parameters
The
Link Layer Discovery Protocol (LLDP)
is a vendor-neutral link layer protocol. LLDP information
is sent by devices from each of their interfaces at a fixed interval, in the form of an Ethernet Frame.
Each frame contains one
LLDP Data Unit (LLDPDU)
. Each LLDPDU is a sequence of
Type-Length-Value (TLV)
structures. Each LLDP frame starts with the following mandatory TLVs:
Chassis ID
,
Port ID
and
Time-to-Live
. The mandatory TLVs are followed by any number of optional
TLVs.
This section allows you to inspect and configure the current LLDP port settings.
4.10.1 LLDP Configuration
Tx Interval
The switch periodically transmits 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.
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.
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 Interva
l
value. Valid values are restricted to 1 - 8192 seconds.
Tx Reinit
When a port is disabled, LLDP is disabled or the switch is rebooted, an LLDP shutdown frame is
