mpls ldp timer hello-hold
Function
The mpls ldp timer hello-hold command sets the timeout period of a Hello Hold timer.
The undo mpls ldp timer hello-hold command restores the default value.
By default, the link Hello Hold timer is 15 seconds and the target Hello Hold timer is 45 seconds.
Parameters
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the value of a Hello Hold timer. | An integer ranging from 3 to 65535, in seconds |
Views
Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, Tunnel interface view, Dialer interface view, VLANIF interface view, Virtual-Template interface view
Usage Guidelines
Usage Scenario
Two LDP peers periodically exchange Hello messages to maintain the Hello adjacency. If no Hello message is received after the target Hello hold timer expires, the Hello adjacency is torn down.
The default value of the timer is recommended. On a network where the link status is unstable or a number of packets are sent, increase the value of the timer to prevent the session from flapping.
Link-Hello hold timer: used to maintain the local adjacency. The mpls ldp timer hello-hold command in the interface view sets a value for the timer.
The value of the timer that actually takes effect is the smaller one of the two Hello holder timers configured on both ends of an LDP session.
Configuration Impact
After the mpls ldp timer hello-hold command is run, the value of the Hello hold timer is the smaller one between the two Hello holder timers configured on both ends of an LDP session.