An LSP (Label Switched Path) in MPLS is unidirectional, meaning traffic flows in one direction only. A bidirectional LSP would require two separate LSPs in opposite directions. Each LSP has a tunnel ID and involves at least one ingress and one egress node. This design allows for traffic engineering and efficient routing in MPLS networks. HCIP-Transmission clarifies that bidirectional communication is achieved through paired unidirectional LSPs, not a single bidirectional LSP, which is a common misconception.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit