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  • Tatiana Plyushchenko thinks this is interesting:

against a table to determine the outbound interface and label. Once these have been determined, three common operations can be performed by LSRs on labels:

  1. Push—. The MPLS label is added to packets and the packets are forwarded along the LSP. This operation is performed as the packet enters the LSP.

  2. Swap—. The MPLS label is changed as the packet carrying ...

From

Cover of Juniper Networks® Reference Guide: JUNOS™ Routing, Configuration, and Architecture

Note

Actions MPLS