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Interlogix NS3702-24P-4S User Manual User Manual

Page 324

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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 on the

port is enabled.

Only CDP TLVs that can be mapped to a corresponding field in the LLDP

neighbours' 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 neighbours' 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 neighbours table.

CDP TLV "Port ID" is mapped to the LLDP "Port ID" field.

CDP TLV "Version and Platform" is mapped to the LLDP "System Description"

field.

Both the CDP and LLDP support "system capabilities", but the CDP capabilities

cover capabilities that are not part of the LLDP. These capabilities are shown as

"others" in the LLDP neighbours' table.

If all ports have CDP awareness disabled the switch forwards CDP frames

received from neighbour devices. If at least one port has CDP awareness

enabled all CDP frames are terminated by the switch.

Note: When CDP awareness on a port is disabled the CDP information isn't

removed immediately, but gets removed when the hold time is exceeded.

Port Description

Optional TLV: When checked the "port description" is included in LLDP

information transmitted.

System Name

Optional TLV: When checked the "system name" is included in LLDP information

transmitted.