Network Score Calculation

Purpose

The Network Score provides a comprehensive assessment of the overall network health by aggregating five Key Performance Indicators (KPIs). This score enables service providers to quickly identify network issues and prioritize support interventions.

The Network Score is displayed in the "Network Score Cube" dashboard widget, providing an at-a-glance view of:

  • Overall network health (0-100 scale)

  • Individual KPI status indicators

  • Problem area identification

Only applicable for TR-181 Data model + TR-369 further.

Score Distribution

Score Range Status Color Description

61-100

Good

Green

Network performing well

31-60

Average

Yellow

Minor issues detected; monitoring recommended

1-30

Low

Red

Significant issues; action required

Score definition can be changed during UI settings.

KPI Overview

The Network Score is calculated from five weighted KPIs:

KPI Weight Description

KPI-WLAN

30

WiFi network performance and interference

KPI-WAN

30

Internet connection quality and stability

KPI-Memory

15

Device memory utilization

KPI-CPU

15

Device processor utilization

KPI-LAN

10

Local network interface health

Total

100

Network Score Formula

Network Score = KPI_WLAN + KPI_WAN + KPI_Memory + KPI_CPU + KPI_LAN

Where each KPI contributes its weighted score (maximum contribution equals its weight).

Weight of each Main KPI is decreased (if needed) by the same percentage of decreasing from its Value.

KPI-WLAN (WiFi Performance)

Weight: 30 points

KPI-WLAN measures WiFi performance across three sub-metrics:

Sub-metric Code Description

Total Hosts

TH

Per-host average of RSSI, SNR, and WiFi Standard scores

Interference

INT

Co-channel interference, adjacent channel interference, and retransmission rates

Number of Hosts

NH

Total number of connected wireless clients

WLAN Formula

KPI_WLAN = 30 × (TH + INT + NH) / 100

WLAN Overall Score Distribution

Score Range Status

100-67

Good

66-33

Average

32-1

Bad

Total Hosts Score (TH)

Per-host WiFi quality metrics averaged across all connected hosts.

TH = RSSI + SNR + STD

RSSI = (33 × ((RSSI_1 + RSSI_2 + ... + RSSI_N) / N)) / 100
SNR  = (33 × ((SNR_1  + SNR_2  + ... + SNR_N)  / N)) / 100
STD  = (33 × ((STD_1  + STD_2  + ... + STD_N)  / N)) / 100
SNR is derived as: SNR = SignalStrength - Device.WiFi.Radio.{i}.Stats.Noise (range approximately -10 to -90 = 80)

Per-host scoring table (Total Hosts = 33% of WLAN):

Parameter Distribution (%) Good (score 34/33) Average (score 22) Bad (score 11)

RSSI

34

-1 to -50 dBm

-51 to -70 dBm

-71 to -99 dBm

SNR

33

99 to 40

39 to 16

15 to -100

Standard

33

AC, AX

N (802.11n)

B, G, A

Per-host calculation:

Per Host Host 1 Host 2 Host 3 Host N Total

RSSI

KPI/1

KPI/2

KPI/3

KPI/N

34 = 100%

SNR

KPI/1

KPI/2

KPI/3

KPI/N

33 = 100%

Standard

KPI/1

KPI/2

KPI/3

KPI/N

33 = 100%

TR-181 Parameter Paths:

# RSSI
Device.WiFi.AccessPoint.{i}.AssociatedDevice.{i}.SignalStrength

# SNR (calculated)
SignalStrength - Device.WiFi.Radio.{i}.Stats.Noise

# Standard
Device.WiFi.AccessPoint.{i}.AssociatedDevice.{i}.OperatingStandard

Interference Score (INT)

Co-channel and adjacent channel interference plus retransmission rate.

INT = 34 × ((KPI_CO_CH + KPI_ADJ_CH + KPI_RETRANS) / 100)
RETRANSMISSION = (RetransCount × 100) / PacketsSent = %

Dual-band interference scoring (Interference = 34% of WLAN):

Band Distribution (%) KPI Good (score 13/12) Average (score 6) Bad (score 1)

Wi-Fi Networks 2.4 G

12

Co-Channel (networks with RSSI > -70)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

Wi-Fi Networks 2.4 G

13

Adjacent channel (-2/+2 channels from user’s with > -80 RSSI)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

Wi-Fi Networks 5 G

12

Co-Channel (networks with RSSI > -70)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

Wi-Fi Networks 5 G

13

Adjacent channel (-2/+2 with width >20MHz channels with > -80 RSSI)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

Retransmission scoring:

Band Distribution (%) Good (score 25) Average (score 12) Bad (score 1)

Retransmission 2.4 G

25

less than 5%

5% to <10%

more than 10%

Retransmission 5 G

25

less than 5%

5% to 10%

more than 10%

Single-band variant (if only one band available):

Distribution (%) KPI Good (score 34/33) Average (score 22) Bad (score 11)

33

Co-Channel (networks with RSSI > -70)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

34

Adjacent channel (-2/+2 channels with > -70 RSSI)

less than 2 (score 0-2)

2 to 5 (score 3-5)

more than 5 (score 6-99)

33

Retransmission

less than 5%

5% to 10%

more than 10%

TR-181 Parameter Paths:

# Interference
Device.WiFi.NeighboringWiFiDiagnostic.Result.{i}.Channel
Device.WiFi.NeighboringWiFiDiagnostic.Result.{i}.SignalStrength

# USP
Device.WiFi.Radio.{i}.FullScan()
Device.WiFi.Radio.{i}.FullScan().ScanResult.{i}.OpClassScan.{i}.ChannelScan.{i}.Channel
Device.WiFi.Radio.{i}.FullScan().ScanResult.{i}.OpClassScan.{i}.ChannelScan.{i}.NeighborBSS.{i}.SignalStrength

# Retransmission
Device.WiFi.SSID.{i}.Stats.RetransCount
Device.WiFi.SSID.{i}.Stats.PacketsSent

Number of Hosts Score (NH)

Total number of wireless clients connected to any band.

NH = 33 × (KPI / 100)
KPI Distribution (%) Good (score 100) Average (score 66) Bad (score 33)

Number of hosts (any band)

100

1-10

11-19

20-99

TR-181 Parameter Paths:

Device.WiFi.AccessPoint.{i}.AssociatedDeviceNumberOfEntries

KPI-WAN (Internet Connection)

Weight: 30 points

KPI-WAN measures WAN connection quality based on the active interface type. Only one WAN interface is active at a time.

WAN = 30 × ((KPI_1 + KPI_2 + KPI_3 + ... + KPI_N) / 100)

WAN Interface Detection

Detect active WAN interface by checking Enable == true and Status == "Up". Upstream must be true for Ethernet WAN interfaces.

If more than 1 active interface, take first by priority: Ethernet → Optical → Cellular → DSL

Device.Ethernet.Interface.{i}.Enable, .Status, .Upstream (if true)
Device.Cellular.Interface.{i}.Enable, .Status
Device.Optical.Interface.{i}.Enable, .Status
Device.DSL.Line.{i}.Enable, .Status

Ethernet WAN

WAN Ethernet ports identified by Device.Ethernet.Interface.{i}.Upstream == true.

Distribution (%) KPI Good (score 25) Average (score 12) Bad (score 1)

25

Link Speed

1000 Mbps

100 Mbps

10 Mbps

25

Duplex

Full (Auto)

Half

—

25

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

25

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

TR-181 Parameter Paths:

# Link Speed
Device.Ethernet.Interface.{i}.CurrentBitRate

# Duplex
Device.Ethernet.Interface.{i}.DuplexMode

# Errors
Device.Ethernet.Interface.{i}.Stats.ErrorsSent + Device.Ethernet.Interface.{i}.Stats.ErrorsReceived

# Discards
Device.Ethernet.Interface.{i}.Stats.DiscardPacketsSent + Device.Ethernet.Interface.{i}.Stats.DiscardPacketsReceived

Fiber (Optical) WAN

Distribution (%) KPI Good (score 34/33) Average (score 22) Bad (score 11)

34

Optical Signal

65 to -7 dBm

-8 to -20 dBm

-21 to -65 dBm

—

Transmit Optical

Only show (values depend on Class A, B, C — class value cannot be queried)

33

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

33

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

TR-181 Parameter Paths:

# Optical Signal
Device.Optical.Interface.{i}.OpticalSignalLevel

# Errors
Device.Optical.Interface.{i}.Stats.ErrorsSent + Device.Optical.Interface.{i}.Stats.ErrorsReceived

# Discards
Device.Optical.Interface.{i}.Stats.DiscardPacketsSent + Device.Optical.Interface.{i}.Stats.DiscardPacketsReceived

Cellular (Mobile) WAN — 4G/LTE

Distribution (%) KPI Good (score 20) Average (score 10) Bad (score 1)

20

RSSI

more than -60 dBm

-61 to -80 dBm

-81 to -117 dBm

20

RSRP

more than -70 dBm

-71 to -90 dBm

-91 to -144 dBm

20

RSRQ

more than -10 dB

-11 to -15 dB

-16 to -20 dB

20

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

20

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

Cellular (Mobile) WAN — 3G

Distribution (%) KPI Good (score 34/33) Average (score 22) Bad (score 11)

34

RSSI

more than -60 dBm

-61 to -86 dBm

-86 to -117 dBm

33

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

33

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

TR-181 Parameter Paths (Mobile):

# RSSI
Device.Cellular.Interface.{i}.RSSI

# RSRP
Device.Cellular.Interface.{i}.RSRP

# RSRQ
Device.Cellular.Interface.{i}.RSRQ

# Errors
Device.Cellular.Interface.{i}.Stats.ErrorsSent + Device.Cellular.Interface.{i}.Stats.ErrorsReceived

# Discards
Device.Cellular.Interface.{i}.Stats.DiscardPacketsSent + Device.Cellular.Interface.{i}.Stats.DiscardPacketsReceived

DSL WAN

Distribution (%) KPI Good (score 25) Average (score 12) Bad (score 1)

25

SNR (Noise Margin)

more than 30 dB

29 to 11 dB

less than 10 dB

25

Attenuation

less than 20 dB

21 to 45 dB

more than 45 dB

—

Bit Rate (DL/UL)

Show only, depends on xDSL technology

25

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

25

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

TR-181 Parameter Paths (DSL):

# SNR
Device.DSL.Line.{i}.DownstreamNoiseMargin

# Attenuation
Device.DSL.Line.{i}.DownstreamAttenuation
# VDSL2: Device.DSL.Line.{i}.TestParams.SATNds

# Errors
Device.DSL.Line.{i}.Stats.ErrorsSent + Device.DSL.Line.{i}.Stats.ErrorsReceived

# Discards
Device.DSL.Line.{i}.Stats.DiscardPacketsSent + Device.DSL.Line.{i}.Stats.DiscardPacketsReceived

Error Rate Calculation (all WAN/LAN types)

ERRORS (%) = (ErrorsSent + ErrorsReceived) × 100 / (PacketsSent + PacketsReceived)
DISCARDS (%) = (DiscardPacketsSent + DiscardPacketsReceived) × 100 / (PacketsSent + PacketsReceived)

KPI-CPU (Processor Utilization)

Weight: 15 points

CPU and Memory KPI are direct values taking opposite (100% Good = 1% CPU load).

Parameter Path:

Device.DeviceInfo.ProcessStatus.CPUUsage

CPU Thresholds

CPU Load Status Score

1% - 30%

Good

100

31% - 60%

Average

66

61% - 100%

Bad

33

CPU KPI Formula

KPI_CPU = 15 × CPU_Score / 100

KPI-Memory (Memory Utilization)

Weight: 15 points

Parameter Paths:

Device.DeviceInfo.MemoryStatus.Total
Device.DeviceInfo.MemoryStatus.Free

Calculation:

MEM(%) = 100 - (FREE × 100 / TOTAL)
MEM(%) = (TOTAL - FREE) × 100 / TOTAL

Memory Thresholds

Memory Load Status Score

1% - 30%

Good

100

31% - 60%

Average

66

61% - 100%

Bad

33

Memory KPI Formula

KPI_Memory = 15 × Memory_Score / 100

KPI-LAN (Local Network)

Weight: 10 points

KPI-LAN measures the health of local Ethernet interfaces. LAN interfaces are identified by Device.Ethernet.Interface.{i}.Upstream == false.

LAN KPI is composed of four sub-metrics, calculated per port and then averaged:

LAN = 10 × ((LNK + DPL + ERR + DSC) / 100)

LNK = (LNK_1 + LNK_2 + ... + LNK_N) / N
DPL = (DPL_1 + DPL_2 + ... + DPL_N) / N
ERR = (ERR_1 + ERR_2 + ... + ERR_N) / N
DSC = (DSC_1 + DSC_2 + ... + DSC_N) / N

ERRORS/DISCARDS = (ERR(DIS) × 100) / PACKETS_SENT(REC) = %

LAN Thresholds

Distribution (%) KPI Good (score 25) Average (score 12) Bad (score 1)

25

Link Speed

1000 Mbps

100 Mbps

10 Mbps

25

Duplex

Full (Auto)

Half

—

25

Errors

0 to 0.49%

0.5 to 1%

1.01 to 100%

25

Discards

0 to 0.49%

0.5 to 1%

1.01 to 100%

Per-port calculation:

Per Port Port 1 Port 2 Port N Total

Link Speed

KPI/1

KPI/2

KPI/N

25 = 100%

Duplex

KPI/1

KPI/2

KPI/N

25 = 100%

Errors

KPI/1

KPI/2

KPI/N

25 = 100%

Discards

KPI/1

KPI/2

KPI/N

25 = 100%

TR-181 Parameter Paths:

# Link Speed
Device.Ethernet.Interface.{i}.CurrentBitRate

# Duplex
Device.Ethernet.Interface.{i}.DuplexMode

# Errors
Device.Ethernet.Interface.{i}.Stats.ErrorsSent + Device.Ethernet.Interface.{i}.Stats.ErrorsReceived

# Discards
Device.Ethernet.Interface.{i}.Stats.DiscardPacketsSent + Device.Ethernet.Interface.{i}.Stats.DiscardPacketsReceived

Missing Data Handling

When KPI data is unavailable:

  1. KPI Weight Redistribution: Redistribute the missing KPI’s weight proportionally to available KPIs

  2. Minimum KPIs Required: At least 3 KPIs must be available for a valid Network Score (.NET UI). Angular UI uses alternative flow: display "Not enough parameters"

  3. Insufficient Data: Display "Not enough parameters" if fewer than 3 KPIs are available

Weight Redistribution Example

If KPI-LAN is unavailable:

KPI Available Baseline New Weight

WLAN

Yes

30

30 / 90 × 100 = 33.3

WAN

Yes

30

30 / 90 × 100 = 33.3

Memory

Yes

15

15 / 90 × 100 = 16.7

CPU

Yes

15

15 / 90 × 100 = 16.7

LAN

No

10

 — 

Total

90

100

Network Score Cube Display

The Network Score Cube widget displays:

Diagram

Related Documentation