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OLT Configuration Reference

Configuration reference for the OLT (Optical Line Terminal) in the Nokia BNG Lab.

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Overview

Device: Nokia OLT Name: OLT-NOKIA Role: Aggregates traffic from ONTs and forwards to BNGs via the switch ONTs: ONT1 (Port 1/1/2), ONT2 (Port 1/1/3)

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Network Connectivity

       ┌─────────────┐
       │  OLT-NOKIA  │
       └──────┬──────┘
              │ 1/1/1 (QinQ)
              │
       ┌──────▼──────┐
       │   Switch    │
       └─────────────┘
              │
       ┌──────┴───────┐
       │              │
    1/1/2         1/1/3
   (dot1q)      (dot1q)
       │              │
   ┌───▼───┐     ┌───▼───┐
   │ ONT1  │     │ ONT2  │
   └───────┘     └───────┘

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Basic System Setup

# System Name
/configure system name "OLT-NOKIA"

# Time Zone
/configure system time zone standard name est

# Management Interfaces
/configure system grpc admin-state enable
/configure system grpc allow-unsecure-connection
/configure system grpc gnmi auto-config-save true

/configure system management-interface netconf listen admin-state enable
/configure system management-interface configuration-save configuration-backups 5
/configure system management-interface netconf auto-config-save true

# SNMP
/configure system management-interface snmp packet-size 9216
/configure system management-interface snmp streaming admin-state enable
/configure system security snmp community "public" access-permissions r
/configure system security snmp community "public" version v2c

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User Configuration

/configure system security user-params local-user user "admin" restricted-to-home false
/configure system security user-params local-user user "admin" access console true
/configure system security user-params local-user user "admin" access ftp true
/configure system security user-params local-user user "admin" access netconf true
/configure system security user-params local-user user "admin" access grpc true
/configure system security user-params local-user user "admin" password "lab123"
/configure system security user-params local-user user "admin" console member ["administrative"]

/configure port 1/1/1 admin-state enable
/configure port 1/1/1 ethernet mode hybrid
/configure port 1/1/1 ethernet encap-type qinq
Port: 1/1/1 Purpose: Uplink to aggregation switch Mode: Hybrid (multiple service types) Encapsulation: QinQ (double VLAN tagging)

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Port to ONT1

/configure port 1/1/2 admin-state enable
/configure port 1/1/2 ethernet mode access
/configure port 1/1/2 ethernet encap-type dot1q
Port: 1/1/2 Purpose: Connection to ONT1 Mode: Access (single subscriber) Encapsulation: dot1q (single VLAN tag) VLAN: 150

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Port to ONT2

/configure port 1/1/3 admin-state enable
/configure port 1/1/3 ethernet mode access
/configure port 1/1/3 ethernet encap-type dot1q
Port: 1/1/3 Purpose: Connection to ONT2 Mode: Access Encapsulation: dot1q VLAN: 150

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VPLS to BNG1 (Service 50)

/configure service vpls "bng1-agg" admin-state enable
/configure service vpls "bng1-agg" service-id 50
/configure service vpls "bng1-agg" customer "1"
/configure service vpls "bng1-agg" stp admin-state disable
/configure service vpls "bng1-agg" sap 1/1/1:50.150 admin-state enable
/configure service vpls "bng1-agg" sap 1/1/2:150 admin-state enable
Service Name: bng1-agg Service ID: 50 Purpose: Aggregate traffic from ONT1 to BNG1SAPs:
  • 1/1/1:50.150 - Uplink to switch (Outer VLAN: 50, Inner VLAN: 150)
  • 1/1/2:150 - Downlink to ONT1 (VLAN: 150)
How it works:
  1. ONT1 sends frames tagged with VLAN 150
  2. OLT adds outer VLAN 50 on uplink
  3. Switch forwards to BNG1
  4. BNG1 receives QinQ frame (50.150)

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VPLS to BNG2 (Service 60)

/configure service vpls "bng2-agg" admin-state enable
/configure service vpls "bng2-agg" service-id 60
/configure service vpls "bng2-agg" customer "1"
/configure service vpls "bng2-agg" stp admin-state disable
/configure service vpls "bng2-agg" sap 1/1/1:60.150 admin-state enable
/configure service vpls "bng2-agg" sap 1/1/3:150 admin-state enable
Service Name: bng2-agg Service ID: 60 Purpose: Aggregate traffic from ONT2 to BNG2SAPs:
  • 1/1/1:60.150 - Uplink to switch (Outer VLAN: 60, Inner VLAN: 150)
  • 1/1/3:150 - Downlink to ONT2 (VLAN: 150)
How it works:
  1. ONT2 sends frames tagged with VLAN 150
  2. OLT adds outer VLAN 60 on uplink
  3. Switch forwards to BNG2
  4. BNG2 receives QinQ frame (60.150)

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VLAN Tagging Details

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Traffic from ONT1 to BNG1

ONT1                 OLT                  Switch              BNG1
 │                    │                     │                   │
 │ VLAN 150           │                     │                   │
 │──────────────────▶ │                     │                   │
 │                    │ QinQ: 50.150        │                   │
 │                    │────────────────────▶│                   │
 │                    │                     │ QinQ: 50.150      │
 │                    │                     │──────────────────▶│
 │                    │                     │                   │
Frame at ONT1: [Ethernet][VLAN:150][Payload] Frame at OLT Uplink: [Ethernet][Outer:50][Inner:150][Payload] Frame at BNG1: [Ethernet][Outer:50][Inner:150][Payload]

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Traffic from ONT2 to BNG2

ONT2                 OLT                  Switch              BNG2
 │                    │                     │                   │
 │ VLAN 150           │                     │                   │
 │──────────────────▶ │                     │                   │
 │                    │ QinQ: 60.150        │                   │
 │                    │────────────────────▶│                   │
 │                    │                     │ QinQ: 60.150      │
 │                    │                     │──────────────────▶│
 │                    │                     │                   │
Frame at ONT2: [Ethernet][VLAN:150][Payload] Frame at OLT Uplink: [Ethernet][Outer:60][Inner:150][Payload] Frame at BNG2: [Ethernet][Outer:60][Inner:150][Payload]

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Service Assignment

ONTPortAccess VLANVPLS ServiceOuter VLANBNG
ONT11/1/2150bng1-agg (50)50BNG1
ONT21/1/3150bng2-agg (60)60BNG2

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Complete Configuration

##################1.SYSTEM NAME ####################################################################################

/configure system name "OLT-NOKIA"

##################2.TIME ###########################################################################################

/configure system time zone standard name est

##################3.GRPC ###########################################################################################

/configure system grpc admin-state enable
/configure system grpc allow-unsecure-connection
/configure system grpc gnmi auto-config-save true

##################4.NETCONF########################################################################################

/configure system management-interface netconf listen admin-state enable
/configure system management-interface configuration-save configuration-backups 5
/configure system management-interface netconf auto-config-save true

##################5.SNMP############################################################################################

/configure system management-interface snmp packet-size 9216
/configure system management-interface snmp streaming admin-state enable
/configure system security snmp community "public" access-permissions r
/configure system security snmp community "public" version v2c

##################8.SYSTEM USERS ########################################################################

/configure system security user-params local-user user "admin" password "lab123"
/configure system security user-params local-user user "admin" access console true
/configure system security user-params local-user user "admin" access ftp true
/configure system security user-params local-user user "admin" access netconf true
/configure system security user-params local-user user "admin" access grpc true
/configure system security user-params local-user user "admin" console member ["administrative"]

##################10.PORTS#################################################################################
##################10.1-PORT TO SWITCH#################################################################################

/configure port 1/1/1 admin-state enable
/configure port 1/1/1 ethernet mode hybrid
/configure port 1/1/1 ethernet encap-type qinq

##################10.2-PORT TO ONT1#################################################################################

/configure port 1/1/2 admin-state enable
/configure port 1/1/2 ethernet mode access
/configure port 1/1/2 ethernet encap-type dot1q

##################10.3.PORT TO ONT2#################################################################################

/configure port 1/1/3 admin-state enable
/configure port 1/1/3 ethernet mode access
/configure port 1/1/3 ethernet encap-type dot1q

##################11.VPLS#################################################################################
##################11.1.VPLS BNG1#################################################################################

/configure service vpls "bng1-agg" admin-state enable
/configure service vpls "bng1-agg" service-id 50
/configure service vpls "bng1-agg" customer "1"
/configure service vpls "bng1-agg" stp admin-state disable
/configure service vpls "bng1-agg" sap 1/1/1:50.150 admin-state enable
/configure service vpls "bng1-agg" sap 1/1/2:150 admin-state enable

##################11.2.VPLS BNG2#################################################################################

/configure service vpls "bng2-agg" admin-state enable
/configure service vpls "bng2-agg" service-id 60
/configure service vpls "bng2-agg" customer "1"
/configure service vpls "bng2-agg" stp admin-state disable
/configure service vpls "bng2-agg" sap 1/1/1:60.150 admin-state enable
/configure service vpls "bng2-agg" sap 1/1/3:150 admin-state enable

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Verification Commands

# Show VPLS services
show service id 50 base
show service id 60 base

# Show SAP status
show service sap 1/1/1:50.150
show service sap 1/1/2:150
show service sap 1/1/1:60.150
show service sap 1/1/3:150

# Show MAC learning
show service id 50 fdb detail
show service id 60 fdb detail

# Show port statistics
show port 1/1/1 statistics
show port 1/1/2 statistics
show port 1/1/3 statistics

# Show detailed SAP info
show service service-using sap 1/1/2:150
show service service-using sap 1/1/3:150

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Troubleshooting

Check:
  1. Port operational state: show port 1/1/2
  2. SAP operational state: show service sap 1/1/2:150
  3. MAC table: show service id 50 fdb detail
Common causes:
  • Port admin down
  • VLAN mismatch
  • Encapsulation type mismatch
Verify:
  1. Uplink port: show port 1/1/1
  2. VPLS service: show service id 50 base
  3. QinQ encapsulation: show port 1/1/1 ethernet encap-type
Check VLAN tags:
tools dump port 1/1/1 encapsulation
Issue: ONT1 traffic going to BNG2 or vice versaVerify service assignment:
show service sap 1/1/2:150  # Should be in service 50 (BNG1)
show service sap 1/1/3:150  # Should be in service 60 (BNG2)
Check uplink SAPs:
show service id 50 sap    # Should have 1/1/1:50.150
show service id 60 sap    # Should have 1/1/1:60.150

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