Alcatel-Lucent 6850-48 参照ガイド

MPLS LDP Commands

OmniSwitch CLI Reference Guide

page 24-13

Configures the hello time (also referred to as the hold time) and the hello interval for targeted LDP 
sessions. A targeted session is an LDP session that exists between two peers that are not directly 
connected to each other. The hello time determines how long LDP waits to receive hello messages from a 
peer before declaring that the peer is down. The hello interval determines how often LDP sends out hello 
messages, which advertise the hello time. 

configure router ldp targeted-session hello time factor 

The hello time, in seconds. The valid range is 1–65535 seconds.

The number of hello messages to send during the hello time. The valid 
range is 1–255. The factor number is divided into the hello time to 
determine the hello interval value.

By default, the hello time is set to 45 seconds and the factor number is set to 3, which results in a default 
hello interval time of 15 seconds.

OmniSwitch 9000E

• Use the no form of this command to set the hello timeout and factor parameters to the default values 

for these parameters.

• Specify a hello time value that is more than three times the value of the hello interval (hello time 

divided by factor). 

• LDP uses hello messages to establish adjacencies with LDP peers. These messages contain a locally-

configured hello time. The hello hold time is the amount of time a peer retains hello adjacencies with-
out receiving another hello message from the adjacent peer. 

• When LDP is establishing a session between two peers, the hold time is negotiated to the lower time 

value of the two peers. Once an operational value is agreed upon, the hold time is divided by the factor 
number to determine the interval at which the peers will send each other hello messages.

-> configure router ldp targeted-session hello 20 2

-> configure router ldp interface-parameters no hello

Release 6.4.2; command was introduced.