Alcatel-Lucent 6850-48 Reference Guide

MPLS LDP Commands

OmniSwitch CLI Reference Guide

page 24-15

Configures the keepalive time and the keepalive interval for targeted LDP sessions. The keepalive time 
determines how long LDP waits to receive keepalive messages from an LDP peer before tearing down the 
session with that peer. The keepalive interval determines how often LDP sends out keepalive messages, 
which advertise the keepalive time. 

configure router ldp targeted-session keepalive timeout factor 

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

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

By default, the keepalive time is set to 40 seconds and the factor number is set to 4, which results in a 
default keepalive interval of 10 seconds.

OmniSwitch 9000E

• Use the no form of this command to set the keepalive time and factor parameters to the default values 

for these parameters.

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

(keepalive time divided by factor). 

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

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

• If no keepalive messages are received from a peer during the keepalive time that is advertised by that 

peer, the local LDP router will tear down the session.

-> configure router ldp targeted-session keepalive 40 2

-> configure router ldp interface-parameters no keepalive

Release 6.4.2; command was introduced.