CENTILLION-SONET-MIB

Description: Manages SONET/SDH physical layer interface configuration and performance monitoring on Nortel Centillion ATM switches.

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CENTILLION-SONET-MIB is a vendor-specific MIB from Nortel (for its Centillion ATM switch product line) used to manage and monitor SONET/SDH physical-layer interfaces used as ATM transport. It exposes a SONET section-layer table with error counters such as BIP-8 (Bit Interleaved Parity) errors, alongside ATM SONET configuration objects. Its monitoring value is physical-layer hardware/link health: BIP-8 error counts reveal signal degradation, cabling issues, or optical transceiver problems on the SONET line before they escalate into ATM cell loss. It depends on and complements the standard SONET/SDH interface MIB conventions layered under IF-MIB, as well as Nortel's broader ATM configuration MIBs. It is deployed on Nortel Centillion ATM switches carrying SONET/SDH uplinks in carrier or enterprise backbone networks, and network engineers often turn to a CENTILLION-SONET-MIB MIB Browser to load and inspect these objects directly.

An administrator would poll cnSonetSectionTable/cnSonetSectionEntry to read cnSonetSectionBip8Errors on a given SONET-carrying interface, watching for a rising error count that signals optical signal degradation or a failing SONET line card. The atmSonetConfig object would be checked to confirm the interface's SONET framing/configuration matches the expected line rate and mode before troubleshooting the BIP-8 error trend further.

Manages SONET/SDH section configuration and monitoring on Centillion ATM switches.