Table of Contents
Advertisement
LLDP PARAMETERS
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 time 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 Interval value. Valid values are restricted to 1 - 8192 seconds.
Tx Reinit
When a interface 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 INTERFACE CONFIGURATION
Interface
The switch interface name of the logical LLDP interface.
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 on the interface is enabled.
Only CDP TLVs that can be mapped to a corresponding field in the LLDP neighbors' table are
decoded. All other TLVs are discarded (Unrecognized CDP TLVs and discarded CDP frames are
not shown in the LLDP statistics.). CDP TLVs are mapped onto LLDP neighbors' table as shown
below.
CDP TLV "Device ID" is mapped to the LLDP "Chassis ID" field.
CDP TLV "Address" is mapped to 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.
CDP TLV "Port ID" is mapped to the LLDP "Port ID" field.
PAGE 153
OPTICAL SYSTEMS DESIGN
OSD2790SFP OPERATOR MANUAL
DOC ID: 10118801
Advertisement
Table of Contents
