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Question 57 - 300-410 discussion

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Which label operations are performed by a label edge router?

A.

SWAP and POP

Answers
A.

SWAP and POP

B.

SWAP and PUSH

Answers
B.

SWAP and PUSH

C.

PUSH and PHP

Answers
C.

PUSH and PHP

D.

PUSH and POP

Answers
D.

PUSH and POP

Suggested answer: D

Explanation:

A label edge router (LER, also known as edge LSR) is a router that operates at the edge of an MPLS network and acts as the entry and exit points for the network. LERs push an MPLS label onto an incoming packet and pop it off an outgoing packet.

Reference:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nxos/mpls/configuration/guide/mpls_cg/mp_mpls_overview.pdf

asked 07/10/2024
Miguel Tuimil Galdo
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