Extensions to Path Computation Element Protocol (PCEP) to Support Resource Sharing-based Path Computation

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Last updated 2018-09-02 (latest revision 2018-03-01)
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Resource sharing in a network means two or more Label Switched Paths (LSPs) use common piece(s) of resource along their paths. This can help save network resource and is useful in scenarios such as LSP recovery or when two LSPs do not need to be active at the same time. A Path Computation Element (PCE) is responsible for path computation with such requirement. Given this feature and its access to the network resource information and possibly active LSPs information, it can be used to support resource-sharing-based path computation with better efficiency. This document extends the Path Computation Element Protocol (PCEP) in order to support resource sharing-based path computation.


Xian Zhang (zhang.xian@huawei.com)
Haomian Zheng (zhenghaomian@huawei.com)
Oscar de Dios (ogondio@tid.es)
Victor Lopez (vlopez@tid.es)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)