For which routes does LDP advertise a label binding?

The correct answer is D. only the IGP routes in the routing table. LDP can only do bindings for IGP learned routes. If the route is learned from BGP, BGP has to do the label binding. For CCIE R&S you don't need to worry about using BGP for label distribution, as this is used for Inter-AS MPLS L3VPN scenarios. If you change your setup so the…

MPLS

Question

Options

Aall routes in the routing table
Bonly the IGP and BGP routes in the routing table
Conly the BGP routes in the routing table
Donly the IGP routes in the routing table

How the community answered

(71 responses)

A
1% (1)
B
3% (2)
C
7% (5)
D
89% (63)

Explanation

LDP can only do bindings for IGP learned routes. If the route is learned from BGP, BGP has to do the label binding. For CCIE R&S you don't need to worry about using BGP for label distribution, as this is used for Inter-AS MPLS L3VPN scenarios. If you change your setup so the routes are learned from IGP instead of BGP they will have labels.

Topics

#LDP#label binding#IGP routes#label distribution

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