Displaying DiffServ-Aware Traffic-Engineered LSP Events

Purpose

A DiffServ-aware traffic-engineered LSP is configured with a bandwidth reservation for a specific class type, and carries traffic for a single class type. On the packets, the class type is specified by the experimental (EXP) bits (also known as the class-of-service bits) and the per-hop behavior (PHB) associated with the EXP bits. The mapping between the EXP bits and the PHB is static, instead of being signaled in Resource Reservation Protocol (RSVP).

The class type must be configured consistently across the DiffServ domain, and must be consistent from router to router in the network. You can unambiguously map a class type to a queue. On each node router, the class-of-service queue configuration for an interface translates to the available bandwidth for a particular class type on that link. For more information about forwarding classes and class of service, see the JUNOS Class of Service Configuration Guide. For more information about differentiated services, see RFC 3270, Multi-Protocol Label Switching (MPLS) Support of Differentiated Services.

When the configuration of a DiffServ-aware traffic-engineered LSP is incorrect, an even or error message might occur in the output of the show mpls lsp extensive command.

Action

To display LSP events that can occur with a Diff-Serv-aware LSP, enter the following JUNOS command-line interface (CLI) operational mode command from the ingress router:

user@host> show mpls lsp extensive

Sample Output

Not available.