Hello everyone!
I will share with you about the process of ASON LSP create
The process of LSP creation is as follows:
Select the basic information such as service level on the NM, and click the source and sink nodes that are NE1 and NE3. Respectively select the WDM-side optical interfaces of the corresponding OTU boards and set the constraint condition of the route according to the actual use. After confirming the information, the NM issues a command for service creation to the source node NE1.
NE1 invokes the OSPF algorithm to compute the most suitable service route according to the control topology and service topology, which are obtained by the OSPF-TE through convergence. For example, such a service route is NE1-NE2-NE3.
NE1 uses the RSVP-TE signaling protocol to transmit a message to NE2 according to the service route. NE1 requests NE2 to reserve resources and create a cross-connection.
NE2 uses the RSVP-TE signaling protocol to transmit a message to NE3. NE2 requests NE3 to reserve resources and create a cross-connection.
After NE3 creates the cross-connection, NE3 provides feedback message to NE2.
NE2 provides a feedback message to NE1.
NE1 receives the feedback message and stores the related information. NE2 then reports the successful creation of the LSP to the management system.
Thank you!
