OLT Configuration Reference

Nokia OLT device configuration for connecting ONTs and aggregating subscriber traffic

OLT Configuration Reference

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

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)

Network Connectivity

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

System Configuration

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

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"]

Port Configuration

Port to Switch (Uplink)

/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)

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

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

VPLS Configuration

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 BNG1

SAPs:

• 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)

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 BNG2

SAPs:

• 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)

VLAN Tagging Details

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]

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]

Service Assignment

ONT	Port	Access VLAN	VPLS Service	Outer VLAN	BNG
ONT1	1/1/2	150	bng1-agg (50)	50	BNG1
ONT2	1/1/3	150	bng2-agg (60)	60	BNG2

Complete Configuration

Full OLT 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

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

Troubleshooting

ONT not learning MAC addresses

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

No connectivity to BNG

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

Wrong BNG receiving traffic

Issue: ONT1 traffic going to BNG2 or vice versa

Verify 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

Related Pages

• Switch Configuration
• BNG1 Configuration
• BNG2 Configuration
• Network Topology