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diff --git a/gpon-auth.md b/gpon-auth.md new file mode 100644 index 0000000..acf37c9 --- /dev/null +++ b/gpon-auth.md @@ -0,0 +1,36 @@ +--- +title: GPON Auth +has_children: false +nav_order: 4 +description: ONU Online Status +--- + + +# GPON Status: Ox +The process for an ONU to go online unconfigured involves five states: + +- **O1 Initial:** the OLT sends a message to the ONU to start the ONU, and the ONU enters the standby state; +- **O2 Standby:** After receiving the message, the ONU extracts the delimiter value, power level, and pre-allocated compensation delay from the message, and adjusts its configurations accordingly to support subsequent information exchange. +- **O3 Serial number:** The OLT sends a serial number (SN) request to the ONU. The ONU sends its SN to the OLT. After receiving the SN of the ONU, the OLT allocates a temporary ONU ID to the ONU. +- **O4 Ranging:** The OLT sends a ranging request to the ONU. After receiving the ranging request from the OLT, the ONU responds with a message carrying its SN and ONU ID. The OLT calculates the compensation delay and sends it to the ONU in a message. After receiving the message, the ONU sets the compensation delay accordingly. +- **O5 Operation:** The OLT sends a password request to the ONU. The ONU returns a password to the OLT. +- **O6 Intermittent LODS state.** +- **O7 Emergency Stop state.** + +The password is not configured on the OLT. If the automatic discovery function is enabled on the PON port of the OLT, the OLT reports an ONU auto-discovery alarm to the CLI or NMS. The ONU goes online normally only after being confirmed. + +```mermaid +graph TD + O1[O1 Initial state] -->|Downstream Synchronization attained| O2[O2-03 Standby-Serial number] + O2 -->|Assign ONU-ID Ploam and Equalization delay assigned| O4[O4 Ranging State] + O4 -->|Ranging Time PLOAM and Equalization delay assigned| O5[O5 Operation] + O5 & O4 & O2 --->|Loss of downstream syncronizzation| O6[O6 Intermittent LODS state] + O2 ---->|Disable S/N Request| O7[O7 Emergency stop state] + O2 -->|Broadcast deactivate ONU-ID Request| O1 + O4 --->|TO1 time expires| O2 + O4 & O5 ---->|Disable S/N Request| O7 + O7 ---->|Enable S/N Request| O1 + O6 ---->|TO2 timer expires| O1 + O6 -->|Downstream Synchronization restored| O5 + O5 & O4 ---->|Deactive ONU-ID Request| O1 +``` |