3Com WX3000 operation manual Precautions During Dldp Configuration, Dldp Configuration Tasks

DLDP neighbor state

A DLDP neighbor can be in one of these two states: two way and unknown. You can check the state of a DLDP neighbor by using the display dldp command.

Table 1-7Description on the two DLDP neighbor states

DLDP neighbor state	Description
two way	The link to the neighbor operates properly.
unknown	The device is detecting the neighbor and the neighbor state is
	unknown.

Precautions During DLDP Configuration

zDLDP works only when the link is up.

zTo insure unidirectional links can be detected, you must make sure: DLDP is enabled on both ends, and the interval of sending advertisement packets, authentication mode and password are consistent on both ends.

zYou can adjust the interval of sending advertisement packets in different network circumstances, so that DLDP can respond rapidly to link failure. The interval must be shorter than one-third of the STP convergence time, which is generally 30 seconds. If too long an interval is set, an STP loop may occur before DLDP shut down unidirectional links. On the contrary, if too short an interval is set, network traffic increases, and port bandwidth is reduced.

zDLDP does not process any LACP event, and treats each link in the aggregation group as independent.

DLDP Configuration

DLDP Configuration Tasks

Follow these steps to configure DLDP:

	To do…			Use the command…	Remarks
Enter system view				system-view	—
	Enable DLDP globally			dldp enable
		Enter		Interface interface-type	Required. By
Enable		Ethernet port
	Enable			interface-number
		view			default, DLDP is
DLDP
	DLDP on				disabled
		Enable
	a port			dldp enable
		DLDP on a
		port
Set the authentication mode and				dldp authentication-mode	Optional. By
					default, the
				{ none simple simple-password
password					authentication
				md5 md5-password }
					mode is none
					Optional. By
Set the interval of sending DLDP packets				dldp interval integer	default, the
					interval is 5
					seconds.
			1-6