User's Manual

225
Item Descri
p
tion
Encapsulation Format
Set the encapsulation for LLDP frames:
• ETHII—Encapsulates outgoing LLDP frames in Ethernet II frames
and processes an incoming LLDP frame only if its encapsulation
is Ethernet II.
• SNAP—Encapsulates outgoing LLDP frames in Ethernet II frames
and processes an incoming LLDP frame only if its encapsulation
is Ethernet II.
LLDP-CDP PDUs use only SNAP encapsulation.
CDP Operating Mode
Set the CDP compatibility of LLDP:
• Disable—Neither sends nor receives CDP frames.
• TxRx—Sends and receives CDP frames
To enable LLDP to be compatible with CDP on the port, you must
enable CDP compatibility on the Global Setup tab and set the CDP
operating mode on the port to TxRx.
LLDP Polling Interval
Enable LLDP polling and set the polling interval.
If no polling interval is set, LLDP polling is disabled.
With the polling mechanism, LLDP periodically detects local
configuration changes. If a configuration change is detected, an
LLDP frame is sent to inform the LLDP neighbors of the change.
LLDP Trapping
Set the enable status of the LLDP trapping function on the port or
ports.
LLDP trapping is used to report to the network management station
critical events such as new neighbor devices detected and link
failures.
To avoid excessive traps from being sent when topology is instable,
tune the minimum trap transmission interval on the Global Setup tab.
Base TLV
Settings
Port Description
Select the box to include the port description TLV in transmitted LLDP
frames.
System Capabilities
Select the box to include the system capabilities TLV in transmitted
LLDP frames.
System Description
Select the box to include the system description TLV in transmitted
LLDP frames.
System Name
Select the box to include the system name TLV in transmitted LLDP
frames.
Management Address
Select the box to include the management address TLV in
transmitted LLDP frames and, in addition, set the management
address and its format (a numeric or character string in the TLV).
If no management address is specified, the main IP address of the
lowest VLAN carried on the port is used. If no main IP address is
assigned to the VLAN, 127.0.0.1 is used.