Establishing the label bindings
Each switch needs a table that contains the actions it is to perform when a given label arrives.
The downstream end of a link needs to know what label values will be sent.
This can be done by management action – directly equivalent to PVC’s in ATM.
But this does not scale well.
And there is no interoperability between management systems – so multi-operator connections are difficult if not impossible.
Hence trend to protocol driven service establishment and the reason for IP’s success.
So we need to automate the LSP establishment process.