You are creating new Cisco MPLS TE tunnels. Which type of RSVP message does the headend router send to reserve bandwidth on the path to the tunnel's router?

The correct answer is C. path. MPLS Traffic Engineering uses RSVP-TE signaling with two key message types: PATH and RESV. The headend (ingress/tunnel source) router initiates tunnel setup by sending a PATH message hop-by-hop toward the tailend (egress) router. The PATH message carries the ERO (Explicit Route O

MPLS and Segment Routing

Question

Options

Aerror
Breservation
Cpath
Dtear

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A
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C
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D
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Explanation

MPLS Traffic Engineering uses RSVP-TE signaling with two key message types: PATH and RESV. The headend (ingress/tunnel source) router initiates tunnel setup by sending a PATH message hop-by-hop toward the tailend (egress) router. The PATH message carries the ERO (Explicit Route Object) and the bandwidth reservation request. Once the tailend receives the PATH message, it responds with a RESV message traveling back toward the headend, confirming and actually reserving the bandwidth along each hop. So the headend sends the PATH message to establish the reservation request - the RESV message confirms it from tailend back.

Topics

#MPLS TE#RSVP-TE#PATH message#Bandwidth Reservation

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