ONU · GPON families
show interface gponx/x onu status
Status and optical levels for ONUs on a GPON interface.
FIBERLINK · PARKS EASY · GPON · XGS-PON · MPLS
Troubleshooting Parks
Operational center for Fiberlink optical access and PK switches, preserving family and firmware boundaries.
parks://diagnostics
$ scope: Fiberlink · PK Series
$ method: read → isolate → change
$ compatibility: family + firmware
$ safety: validate first_
Compatibility rule: Public Parks CLI documentation is family-dependent. Do not assume GPON 200xx/300xx/400xx syntax applies unchanged to Fiberlink 50048 or PK switches.
01 · CONFIRMED COMMANDS
Fiberlink CLI
Read-only references first; compatibility is shown per command.
ONU · GPON families
show gpon onu <serial> summary
Detailed ONU state, optical levels, distance, model and firmware.
Profiles · GPON families
show gpon onu <serial>
Applied IPHOST, flow, VLAN and Ethernet profiles.
Provisioning · GPON families
show gpon onu unconfigured
Find synchronized ONUs without a configured flow.
Security · GPON families
show gpon blacklist
Inspect ONUs blocked by blacklist conditions such as duplicated serial.
L2 · Fiberlink
show l2 mac-table
Inspect learned MAC addresses, VLANs and ports.
PON · GPON families
show interface gponx/x
Inspect interface state, counters, errors and transceiver context.
Optics · GPON 100xx/200xx/300xx/400xx
show interface gponx/x sfp
Inspect SFP identification, temperature and optical measurements.
Hardware · 200xx/300xx/400xx
show temperature
Inspect OLT internal temperature where supported.
Hardware · 300xx/400xx
show fan
Inspect fan module state where supported.
Config · GPON families
show running-config
Collect the active configuration; sanitize before sharing.
02 · PLAYBOOKS
Troubleshooting by symptom
ONU offline / LOS
- Check ONU status and summary.
- Check blacklist for duplicated serial or previous PON binding.
- Inspect PON SFP and optical distribution network.
- Confirm model/family and firmware before any change.
ONU active without service
- Inspect applied flow/VLAN profiles.
- Check ONU MAC learning and L2 MAC table.
- Validate uplink and service VLAN.
- Compare with a working ONU on the same service.
Degraded PON
- Inspect PON counters and ONU population.
- Inspect SFP DDM and temperature.
- Check OLT temperature/fans when supported.
- Inspect feeder, splitters and ODN.
PK switch service issue
- Validate VLAN/QinQ and MAC learning.
- Validate LAG/LACP and spanning tree/ring protection.
- For routing/MPLS, validate underlay before service layer.
- Use the exact model/firmware manual for CLI syntax.
03 · OPTICS AND THERMALS
Known operational limits
SFP GPON
Parks support states a 70 °C operating limit for the SFPs supplied with its GPON OLTs; excessive temperature can cause link failures and component degradation.
OLT GPON
Parks support material states a 65 °C operating limit for GPON OLTs. Validate temperature and ventilation before attributing instability to software.
Fiberlink 50048
GPON/XGS-PON mode changes require model-specific procedure and licensing conditions; use the dedicated official procedure.
OFFICIAL SUPPORT