LSR's running LDP discover each others using Hello messages , then establish a session using a TCP connection
ip cef
mpls ldp router-id Lo0 force (force indicates to immediately re-establish session using the Lo0 IP)
int fa0/0
mpls ip
LDP hello messages are multicast using 224.0.0.2 UDP 646, including hello interval and hold time
if hold time expires session is torn down (default 5 , 15)
LDP ID : routerid:0 or 1 ... 1 for atm perinterface label space which is not in the exam , so it'll always appear as IP:0
** Note if the neighbor don't have a route for the router-id IP in it's routing table the session will never form
Below are excerpts i need from MPLS Fundamentals Chapter 4
ip cef
mpls ldp router-id Lo0 force (force indicates to immediately re-establish session using the Lo0 IP)
int fa0/0
mpls ip
LDP hello messages are multicast using 224.0.0.2 UDP 646, including hello interval and hold time
if hold time expires session is torn down (default 5 , 15)
LDP ID : routerid:0 or 1 ... 1 for atm perinterface label space which is not in the exam , so it'll always appear as IP:0
** Note if the neighbor don't have a route for the router-id IP in it's routing table the session will never form
Below are excerpts i need from MPLS Fundamentals Chapter 4
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