Configuring LLDP (NSM Procedure)

EX Series switches use Link Layer Discovery Protocol (LLDP) and Link Layer Discovery Protocol Media Endpoint Discovery (LLDP-MED) to learn and distribute device information on network links. The information allows the switch to quickly identify a variety of devices, resulting in a LAN that interoperates smoothly and efficiently.

To configure LLDP:

  1. In the navigation tree, select Device Manager > Devices. In Device Manager, select the device for which you want to configure a port mirror analyzer.
  2. In the configuration tree, expand Protocols > LLDP.
  3. Add/modify LLDP settings as specified in Table 61.

Note: After you make changes to a device configuration, you must push that updated device configuration to the physical security device for those changes to take effect. You can update multiple devices at one time. See Updating Devices for more information.

Table 61: LLDP Configuration Fields



Your Action


Specifies whether LLDP must be disabled on the port.

Click to select the option.

Advertisement Interval

Specifies the frequency of outbound LLDP advertisements. You can increase or decrease this interval.

Select a value.

Transmit Delay

Specifies a delay-interval setting that the switch uses to delay transmitting successive advertisements. You can increase this interval to reduce the frequency of successive advertisements.

Select a value.

Hold Multiplier

Specifies the multiplier factor to be used by an LLDP-enabled switch to calculate the time-to-live (TTL) value for the LLDP advertisements it generates and transmits to LLDP neighbors.

Select a value.

Ptopo Configuration Trap Interval

Specifies the transmission of ptopo notifications..

Select a value.

Ptopo Configuration Maximum Hold Time

Specifies the desired time interval an agent maintains dynamic ptopo connection entries.

Select a value.


Specifies LLDP settings for the interface.

  1. Select the interface.
  2. Select the option Multicast Router Interface.
  3. Select Disable if LLDP settings must be disabled on a specific interface.