# mpls rsvp signalling node-hello

#### Syntax

{ ip | mpls } rsvp signalling node-hello
[ refresh { interval helloInterval | misses helloMisses } ]

{ no | default } { ip | mpls } rsvp signalling node-hello

#### Release Information

Command introduced in JunosE Release 9.0.0.

#### Description

Turns on or configures RSVP-TE hellos to include node IDs as source and destination addresses in the hello packets for all RSVP-TE interfaces on the current virtual router. RSVP-TE hellos based on node ID enable the JunosE Software to interoperate its RSVP-TE graceful restart capability with routers that cannot support RSVP-TE graceful restart with link-based hellos.

The no version turns off node-hello support on the current VR. The default version restores the default configuration, in which RSVP node hello support is not enabled.

| Note: Node hellos are required only for interoperability with some non–E Series implementations. Node hellos are not required for communications between routers running JunosE Software or for interoperability with routers running Junos OS.

#### Options

- ip—Specifies alternative keyword for compatibility with non–E Series implementations
- helloInterval—Number of milliseconds specifying the interval at which node hellos are sent, in the range 1000–60000; default value is 10000
- helloMisses—Number of RSVP-TE node hello messages from a peer that can be missed before that hello adjacency peer is considered to be down, in the range 4–10; default value is 4

#### Mode

Global Configuration