LDP Hello interval and Hello Hold timeout timers

The Hello interval and Hello Hold Timeout timer values can be obtained from the global default values or configured globally on a router. The Hello Hold timeout timer value can also be configured through an interface. When configuring these values the following constraints must be followed:

• The Hello Interval value must be less than 32767.
• The Hello Hold Timeout value must be less than 65535.
• The Hello Hold Timeout value must be greater than or equal to 2 times the Hello Interval value.

The values can be set that determine the values used on the configured router and values sent to adjacent peers for their configuration as follows:

• Setting the LDP Hello interval values
• Setting the LDP Hold time sent to adjacent LSRs
• Determining the LDP Hold time on an MPLS interface