Supported Platforms
Configuring RSVP to Pop the Label on the Ultimate-Hop Router
You can control the label value advertised on the egress router of an LSP. The default advertised label is label 3 (Implicit Null label). If label 3 is advertised, the penultimate-hop router removes the label and sends the packet to the egress router. When ultimate-hop popping is enabled, label 0 (IP version 4 [IPv4] Explicit Null label) is advertised. Ultimate-hop popping ensures that any packets traversing an MPLS network include a label.
 | Note: Juniper Networks routers queue packets based on the incoming label. Routers from other vendors might queue packets differently. Keep this in mind when working with networks containing routers from multiple vendors. |
To configure ultimate-hop popping for RSVP, include the explicit-null statement:
You can include this statement at the following hierarchy levels:
- [edit protocols mpls]
- [edit logical-systems logical-system-name protocols mpls]
