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PCE Information 2/2 Optional Information : Support = MAY PCE capabilities Path computation related (e.g. supported objective functions, supported constraints) General capabilities (support for request prioritization, encryption…) Alternate PCE for recovery purpose It means optional in the context of the PCE discovery itself This does not mean optional in the context of the PCE architecture It could also be obtained by the PCC-PCE communication protocol Description of PCE capabilities is out of the scope of this ID Should be described in a separate ID (as it applies both to PCE discovery and PCC-PCE communication) Dynamic discovery of PCE capabilities MUST NOT generate an excessive amount of information and SHOULD be limited to a small set of generic capabilities |