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Describe Push, Swap, Pop Functions In Mpls And Also Explain Penultimate Hop Popping (php)?

Answer»

Label SWITCHING is a DISCRETE mechanism from IP forwarding; here LSR regulates what label function needs to be performed, such as PUSH, Pop, or Swap, to process a packet throughout the MPLS backbone using label switching.

Push: ADD a label
Pop: REMOVE a label
Swap: Exchange/ replace a label

Label switching is a discrete mechanism from IP forwarding; here LSR regulates what label function needs to be performed, such as Push, Pop, or Swap, to process a packet throughout the MPLS backbone using label switching.

Push: Add a label
Pop: Remove a label
Swap: Exchange/ replace a label



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