Advertising OTN Fixed Time slot constraints in OSPF

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Last updated 2020-02-17 (latest revision 2019-08-16)
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This document describes the extensions needed to OSPF for advertising the constraints that exists in some OTN switches while switching timeslots between ports. This advertisement would be needed for computing path of LSP through these switches taking into account the above mentioned constraint. This document proposes extensions to existing OSPF for advertising the timeslots available on each OTN port in a new sub-tlv and the connectivity matrix representing the capability of the device to cross connect these timeslots in another new sub-tlv


Vijayanand Chandrasekar (

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