In an MPLS network, which device is responsible for taking an unlabeled packet and encapsulating it with an MPLS label?
Ingress Label Edge Router
Egress Label Edge Router
Label Switching Router
Next-hop Router
TheIngress Label Edge Router (LER)is the first router that:
Receives an unlabeled IP packet.
Applies an MPLS labelbased on its forwarding decision.
Forwards it into theMPLS core.
Option A is correct– Ingress LER does MPLS label push.
Option B (Egress LER)– removes labels at the end of the path.
Option C (LSR)– switches labels, but doesn’t push them onto unlabeled packets.
Option D– is not a specific MPLS role.
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