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Node categories Multiple switching capable nodes: simplex versus hybrid A simplex node single switching capability per interface, but can comprise of interfaces with distinct switching capabilities advertises several TE Links each with a single SC value as part of its ISCD sub-TLVs. A hybrid node multiple switching capabilities per interface, and interfaces of the same hybrid node may have different multiple switching capabilities advertises at least one TE Link containing multiple ISCDs with different SC values (at least one per supported SC value per interface). TDM PSC |