MPLS supports both static and dynamic LSP establishment. Which of the following protocols cannot dynamically establish LSPs in MPLS TE scenarios? (Select all that apply)
In MPLS Traffic Engineering (TE), Label Switched Paths (LSPs) can be established:
Statically: Manual configuration.
Dynamically: Typically via RSVP-TE.
Protocol roles:
RSVP-TE: Used to dynamically establish and signal TE LSPs → ✅
OSPF / IS-IS: Act as IGP protocols and provide TE-related link-state information (like bandwidth) but do not establish LSPs themselves → ❌
BGP: Used for route advertisement, not for LSP setup in MPLS TE → ❌
Correct answers: A, C, D
[Reference:Huawei HCIE-Datacom V1.0 Study Guide —Chapter: MPLS TE FundamentalsSection: LSP Establishment Mechanisms, , ]
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