Which statement is true about LDP?

Which statement is true about LDP?
A . LDP and IGP both exchange their databases every 60 seconds.
B . LDP and IGP both exchange their databases every 30 seconds.
C . LDP relies on IGP for all routing-related decisions.
D . LDP performs routing functions along with IGP.

View Answer

Answer: C

Explanation:

LDP relies on IGP for all routing-related decisions. LDP is a protocol that distributes labels in an MPLS environment, but it does not perform any routing functions. LDP uses the underlying routing information provided by an IGP, such as OSPF or IS-IS, to forward label packets. LDP and IGP do not exchange their databases at regular intervals, but rather use hello messages to maintain adjacencies and sessions.

Reference: Ericsson IP Networking – Routing Protocols, Label Distribution Protocol – Wikipedia