MPLS - “Push, Swap, Pop”

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In a PWE3 PPVNP [Provider Provisioned Virtual Private Network], there may be more than one label. To begin with, IP [Internet Protocol] packets may have a number of labels or “tags” attached to them. MPLS [Multi-Protocol Label Switching] is just one type of label. Here are some terms associated with labeling:

• Push - add a label

• Swap - replace the label
• Pop - remove the label

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[tags]ppvnp,mpls,multi-protocol label switching,pwe3,provider provisioned virtual private network[/tags]