SNMP Version 2 MPLS Traps

The JUNOS software supports the Multiprotocol Label Switching (MPLS) SNMP version 2 traps defined in RFC 3812, Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base.

For scalability, the MPLS traps are generated by the ingress router only. You can disable the MPLS traps by including the no-trap option at the [edit protocol mpls log-updown] hierarchy level. For information on disabling the generation of MPLS traps, see the JUNOS MPLS Applications Configuration Guide.

The JUNOS software supports the following MPLS traps:

• mplsTunnelUp—Generated when an mplsTunnelOperStatus object for one of the configured tunnels leaves the down state and transitions into another state, other than the notPresent state.
• mplsTunnelDown—Generated when an mplsTunnelOperStatus object for one of the configured tunnels enters the down state from a state other than the notPresent state.
• mplsTunnelRerouted—Generated when a tunnel is rerouted.
• mplsTunnelReoptimized—Generated when a tunnel is reoptimized.

  Note: In the JUNOS software releases earlier than 8.4, mplsTunnelReoptimized was generated every time the optimization timer expired; that is, when the optimization-timer exceeded the value set for the optimize-timer statement at the [edit protocols mpls label-switched-path path-name] hierarchy level. However, in Release 8.4 and later, this trap is generated only when the path is reoptimized, and not when the the optimization-timer expires.