Hello, everyone!
Today, I'd like to share a technology point with you.
Product Model: MSTP
SDH have a layer-by-layer bit error monitoring method, which confirm the SDH signal report alarm when bit-error happened. The Bit-Error is checked by some bytes in SDH head, the bellow is all the bit-error monitoring bytes in SDH service:
1. Regenerator section bit error monitoring byte: B1 monitors the regenerator section signal flow in BIP8 even parity check mode. pIf the receive end detects B1 bit error blocks, it reports the RS-BBE performance event.
2. Multiplex section bit error monitoring byte: B2 pMonitors the multiplex section signal flow in BIP24 even parity check mode. pIf the receive end detects B2 bit error blocks, it reports the MS-BBE performance event.
3. Higher-order path bit error monitoring byte: B3 monitors the bit error performance of higher-order VCs. pThe monitoring mode is BIP-8 even parity check, which has a similar mechanism with B1 and B2. pIf the receive end detects B3 bit error blocks in the VC paths, it reports the HP-BBE performance event in the associated path.
4. Bits 1 to 2 in V5: allocated for lower-order path background block error (LP-BBE) monitoring using the BIP-2 scheme.
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