LC-ATM's and LDP session intialisition

[aballant]

Hi,

I'm a bit new to MPLS, what has to be configured on an LC-ATM LSR, such that the LDP session is correctly initialised? I presume it needs to correct a TCP connection? and therefore IP routing between the ATM LSR's?



cheers,
Andrew

 

[aballant]

Hi,

I looked into this, and it is the case that routed IP is required to allow loopback IP communication, which then initiate the LDP session. Once this has been established the LDP traffic will be transport on the LDP VC (32/0),
LDP RFC 3036 it says……



2.5.3. Session Initialization

After LSR1 and LSR2 establish a transport connection they negotiate session parameters by exchanging LDP Initialization messages. The parameters negotiated include LDP protocol version, label distribution method, timer values, VPI/VCI ranges for label controlled ATM, DLCI ranges for label controlled Frame Relay, etc.



so you need a IP connection to then negotiate the VPI/VCI for LC-ATM.


cheers,
Andrew