Multiprotocol Label Switching - MPLS IP Forwarding: Control Plane - Label Distribution Protocol Reference

6 important questions on Multiprotocol Label Switching - MPLS IP Forwarding: Control Plane - Label Distribution Protocol Reference

What are the transport protocols for LDP?

UDP (hellos)
TCP (Updates)

What are the port numbers for LDP and TDP?

LDP 646
TDP 711

What is the MPLS hello destination address?

224.0.0.2
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Who initiates the MPLS LDP TCP connection?

Highest LDP ID

What does the MPLS LDP TCP connection use as address?

Transport IP address (if configured)
LDP ID if no transport address is configured

How is the LDP ID determined?

Just like OSPF router ID

-Configuration
-Highest ip address  loopback when LDP comes up
-Highest ip addres of nonloopback when LDP comes up (interface)

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