40Table 17 Description on DLDP neighbor statesDLDP neighbor state DescriptionUnknownA neighbor is in this state when it is just detected and is being probed. A neighbor isin this state only when it is being probed. It transits to Two way state or Unidirectionalstate after the probe operation finishes.Two way A neighbor is in this state after it receives response from its peer. This state indicatesthe link is a two-way link.UnidirectionalA neighbor is in this state when the link connecting it is detected to be a unidirectionallink. After a device transits to this state, the corresponding neighbor entriesmaintained on other devices are removed.DLDP configuration task listFor DLDP to work properly, enable DLDP on both sides and make sure these settings are consistent: theinterval to send Advertisement packets, DLDP authentication mode, and password.DLDP does not process any link aggregation control protocol (LACP) events. The links in an aggregationare treated as individual links in DLDP.Make sure the DLDP version running on devices on the two ends are the same.Complete the following tasks to configure DLDP:Task RemarksConfiguring the duplex mode and speed of an Ethernet interface RequiredEnabling DLDP RequiredSetting DLDP mode OptionalSetting the interval to send advertisement packets OptionalSetting the delaydown timer OptionalSetting the port shutdown mode OptionalConfiguring DLDP authentication OptionalResetting DLDP state OptionalConfiguring the duplex mode and speed of anEthernet interfaceTo make sure that DLDP works properly on a link, you must configure the full duplex mode for the portsat two ends of the link, and configure a speed for the two ports, rather than letting them negotiate aspeed.For more information about the duplex and speed commands, see Layer 2—LAN Switching CommandReference.
