PROFUSION NETWORK 360 ANALYZER
Accelerate Problem Resolution on Outside Plant (OSP) and in facilities (ISP)
USER GUIDE
WORKS BEST
IN CHROME
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Notice We have attempted to ensure that the information in this guide is accurate at the time of publication. As technology moves quickly and
processes change, and as updates are made to the software, this information is subject to change without notice. When this document is updated,
it will be noted in the Revisions section in the appendix.
Copyright © Copyright 2017 Profusion Analytics, LLC. All rights reserved.
No part of this guide may be reproduced or transmitted electronically or otherwise without written permission of the publisher.
Trademarks Profusion Analytics is a trademark or registered trademark of Profusion Analytics, LLC.
Chrome and Google trademarks, used in this document are either trademarks or registered trademarks of Google in the United States and/or other
countries.
Specifications, terms, and conditions are subject to change without notice. All trademarks and registered trademarks are the property of their
respective companies.
Ordering information This guide is the property of Profusion Analytics and is made available to the client as a downloadable file and online booklet.
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NETWORK 360 ANALYZER USER GUIDE
TABLE OF CONTENTS
TABLE OF CONTENTS ................................................................................................................................................................................................ 3
ABOUT THIS GUIDE ...................................................................................................................................................................................................... 6
Major features of the application ............................................................................................................................................................................. 6
Components of the analytics engine........................................................................................................................................................................ 6
SYSTEM ARCHITECTURE ............................................................................................................................................................................................... 7
REGISTERING FOR NETWORK 360 ................................................................................................................................................................................ 8
Step 1. Click on Reset Password .............................................................................................................................................................................. 8
Step 2. Enter your email address and click Send ..................................................................................................................................................... 8
Step 3. Enter your password twice as shown below. ................................................................................................................................................ 9
LOGGING IN AND OUT ................................................................................................................................................................................................. 9
Once you have set your password, you can log in. ................................................................................................................................................... 9
GETTING STARTED ..................................................................................................................................................................................................... 10
The dashboard view ............................................................................................................................................................................................... 10
MENU ........................................................................................................................................................................................................................ 11
ALERTS - QUICKVIEW ................................................................................................................................................................................................. 12
Alerts View All ..................................................................................................................................................................................................... 13
Alerts Drill Down ................................................................................................................................................................................................. 14
View Billing Data in a list ........................................................................................................................................................................................ 15
MAP- OVERVIEW ....................................................................................................................................................................................................... 16
View Nodes............................................................................................................................................................................................................ 17
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View Cable Modems Served By a Node ................................................................................................................................................................. 18
View Cable Modem Billing and Performance Details ............................................................................................................................................. 19
ACCELERATE TROUBLESHOOTING USING THE OVERALL RATINGS TOOL .......................................................................................................... 20
Using the Overall Ratings Tool to Isolate Cable Modems ...................................................................................................................................... 21
CABLE MODEM INVENTORY ................................................................................................................................................................................... 23
Selecting a node .................................................................................................................................................................................................... 23
Selecting additional nodes .................................................................................................................................................................................... 25
Viewing cable modems without billing data .......................................................................................................................................................... 26
UNDERSTANDING CABLE MODEM DETAILS .......................................................................................................................................................... 27
Cable Modem QUICK VIEW ................................................................................................................................................................................... 27
Checking the Downstream (DS) Signal-to-Noise Ratio (SNR) ............................................................................................................................... 28
INTERPRETING THE NULL FLAG (-99) ..................................................................................................................................................................... 32
SIGNAL QUALITY GRAPHS .......................................................................................................................................................................................... 33
Display Graphs Using the Dashboard ...................................................................................................................................................................... 33
Adding more CMs to review ................................................................................................................................................................................... 36
Additional Signal Quality Graphs ............................................................................................................................................................................ 37
Spectral Plot ........................................................................................................................................................................................................... 38
Zoom...................................................................................................................................................................................................................... 39
View/Hide Channels ............................................................................................................................................................................................... 39
Downstream Graphs .............................................................................................................................................................................................. 40
Upstream (US) Graphs............................................................................................................................................................................................ 43
PNM Graphs ........................................................................................................................................................................................................... 46
PNM Micro Reflections ....................................................................................................................................................................................... 47
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PNM Group Delay ............................................................................................................................................................................................... 48
PNM Time Domain Reflectometry (TDR) ............................................................................................................................................................. 49
CHANNEL LINEUP ....................................................................................................................................................................................................... 50
Center Frequency View ....................................................................................................................................................................................... 50
Display Channels View By Headend/Hub ............................................................................................................................................................ 51
TIME SLIDER - COMPARING ALERTS AND ALARMS OVER TIME ................................................................................................................................... 52
APPENDIX .................................................................................................................................................................................................................. 53
Network 360 Legends ............................................................................................................................................................................................ 53
Understanding Spectral Impairments .................................................................................................................................................................... 54
Revisions................................................................................................................................................................................................................ 56
CONTACTS ............................................................................................................................................................................................................... 57
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ABOUT THIS GUIDE
Welcome to Profusion’s patented Network 360 Analyzer, that will empower your team members via advanced network analytics and a reduction in
troubleshooting time.
MAJOR FEATURES OF THE APPLICATION
Network 360 collects and analyzes the network data and immediately publishes the following artifacts in the desktop application:
Which subscribers with cable modems are being affected?
Which impairment are the cable modems reporting?
How severe is the impact?
What and where is the fault causing the situation?
Has the issue been resolved?
COMPONENTS OF THE ANALYTICS ENGINE
Profusion’s Network 360 Analyzer system is made up of:
A data collection platform that pulls data from your cable modems (CM) and terminations systems (CMTS).
A file that is pushed to all cable modems activating specific data collection features.
A customized database with configurable settings for normal status, alerts (this situation should be addressed soon), and alarms (this
situation needs to be addressed ASAP).
A Big-Data analytics engine that quickly provides the decision-making tools to accelerate dispatch and repair
.
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SYSTEM ARCHITECTURE
Figure 1 - System Architecture of Network 360
The Cable Modem Config File is sent from the SFTP Server to
set the CM in collect mode for the data required for proactive
network maintenance.
The Network 360 Collection Engine resides on the client’s
Virtual Machine (VM) and polls the modems and CMTS on a
reoccurring basis, collecting data for each object in the
Management Information Base (MIB).
The Network 360 Analytics Engine pulls and analyzes the data
from the VM.
The Network 360 application reads the polling data, enriches it
with other cable operator data in the Analytics Engine and
presents it to the user.
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REGISTERING FOR NETWORK 360
STEP 1. CLICK ON RESET PASSWORD
Figure 2 - Register using Reset Password link
STEP 2. ENTER YOUR EMAIL ADDRESS AND CLICK SEND
Figure 3 - Enter your email address
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STEP 3. ENTER YOUR PASSWORD TWICE AS SHOWN BELOW.
Figure 4 Set Password screen
LOGGING IN AND OUT
ONCE YOU HAVE SET YOUR PASSWORD, YOU CAN LOG IN.
Figure 5 - Network 360 Login Screen
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GETTING STARTED
THE DASHBOARD VIEW
The Dashboard is a single page detailing those system elements that are experiencing quality issues. Clicking on any blue-text will segue the end
user to the appropriate display in the application for that metric.
Figure 6 - Dashboard view on login
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MENU
Click to open the menu. The images shown here are examples only. Each company’s menu will include the network topology specific to their
organization.
Figure 7 - Network 360 Menu
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ALERTS - QUICKVIEW
Click the Alert Circle in the navigation bar to open and close the Quick View popup window of cable modems reporting impairments.
Quickly address a modem, modems, or that part of the plant that is contributing to the impairments.
Figure 8 - Viewing Alerts
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ALERTS VIEW ALL
Click View All to open the All Alerts screen.
Figure 9 - Alerts, View All
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ALERTS DRILL DOWN
Clicking on any impairment in the Message Column to open a spectrum view and list of related CMs.
Figure 10 - Alerts Drill Down to Spectral Graph
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VIEW BILLING DATA IN A LIST
Click on the + or - mark next to the MAC Address to open or close the Billing Data window.
Figure 11 - View Billing Data in a List
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MAP- OVERVIEW
The initial map view displays the headends in the system.
Use the Menu to drill down to view nodes and cable modems.
Figure 12 - Initial Map View
Hover over an icon to reveal the details about that location.
Figure 13 - Map Icon Details
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VIEW NODES
Clicking on a headend will zoom in to display the nodes associated with that headend. Note: you may have to zoom and pan to find them all.
Figure 14 - Zoomed-in map view
Hovering on a node will display the Node name and CMTS IP Address
Figure 15 Node Details (Associated CMTS)
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VIEW CABLE MODEMS SERVED BY A NODE
Clicking on a node will display the cable modems associated with that node, along with a color-coded status based on reported impairments.
Figure 16 - Cable Modems by Node
Hover over a modem to display its MAC and CMTS IP addresses.
Figure 17 Cable modem details on hover
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VIEW CABLE MODEM BILLING AND PERFORMANCE DETAILS
Click on a cable modem to and view billing data and performance details.
Figure 18 - Cable modem details
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ACCELERATE TROUBLESHOOTING USING THE OVERALL RATINGS TOOL
The Overall Ratings tool can be found in any map view. With a field of cable modems displayed by node, use the tool to isolate which DOCSIS
metric is not being met and which cable modem is experiencing this issue.
Step 1. Open the Map
Step 2. Select a Node Location
Step 3. Zoom out/Pan to display as many of the cable modems in that serving node area
Step 4. Click Overall Ratings and select one of the metrics
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USING THE OVERALL RATINGS TOOL TO ISOLATE CABLE MODEMS
Figure 19 - Base Image Cable Modems with all metrics shown
Figure 20 Using Overall Rankings, cable modems isolated for US_RX_CMTS
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CABLE MODEM INVENTORY
SELECTING A NODE
Using the menu, select a node. The list of cable modems served by that node will appear.
Figure 21 - Cable modem inventory
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SELECTING ADDITIONAL NODES
Add more cable modems to the list by selecting another node. The nodes under review will be listed in icons at the top of the list as shown below.
To remove modems from the list, click the node icons.
Figure 22 - Adding nodes to the inventory list
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VIEWING CABLE MODEMS WITHOUT BILLING DATA
Network 360 polls all devices on each CMTS and then matches that data by MAC address to your billing data. In many instances, devices are
found on the CMTS that do not have a corresponding entry in billing. This might indicate that the cable modem is a test device, a new device in
the warehouse or a cloned device. Identifying all the devices on each CMTS that are utilizing bandwidth, and correspondingly being able to turn
down those devices that are deemed inappropriate, is a critical component in managing your network. Select the menu item, W/O Billing Data,
to display all matching devices for your review and analysis.
To view the list of devices without billing data
Select W/O Billing Data > Notice that the filter is set to HEADEND and NODE w/o billing data > Notice there are no nodes in the list view
Select a modem to pin it to the top > Click the down arrow to display the billing data > Notice that the fields are empty
Figure 23 Inventory view of cable modems without billing data. Note missing details at top of screen.
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UNDERSTANDING CABLE MODEM DETAILS
CABLE MODEM QUICK VIEW
The Quick View displayed after clicking on a cable modem icon provides an instant and complete view of what is happening at that location.
Figure 24 - Cable Modem Details Quick View
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CHECKING THE DOWNSTREAM (DS) SIGNAL-TO-NOISE RATIO (SNR)
As shown below, click on the MAC address of the cable modem to pin the modem to the map.
Figure 25 - Getting ready to check SNR
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Click the MAC Address of the pinned CM to display the plot of its Downstream SNR. Note: Once a modem has been “pinned,” the display in the
upper left will show the MAC address of that modem along with the MAC address of the reference modem which will always be shown in green.
Figure 26 - Cable Modem DS-SNR
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Click the arrow next to the red MAC address to display more details about that cable modem.
Figure 27 - Additional details
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Below the graph, an inventory view of the pinned modems will appear, followed by all the modems in that node.
Figure 28 - Full-Screen Graph of DS-SNR
The Inventory list can be expanded by adding another node or headend name in the filter box as shown below (hit Enter to select it). If you remove
all the filters, the list will revert to a pre-defined “Default List.”
Figure 29 - Add more CMs to the list
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INTERPRETING THE NULL FLAG (-99)
In cases where the system is unable to resolve the polling data, some of the modem metrics may report as -99. In this case, consider this to be a
flag; an issue to be resolved. There may be an issue with the configuration file, or the CMTS may have issues with timing, or with the CM-STATUS
configuration. In any event, use this flag to identify those devices which are not reporting, or are only intermittently reporting, performance data:
i.e. US_TX and US_SNR.
As shown below, a cable modem is reporting US_TX as -99. Clicking the + mark next to the MAC Address will open the details window to identify
the location of the device.
Figure 30 - Node inventory view with Null Flags highlighted
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SIGNAL QUALITY GRAPHS
The heart of Network 360 is the Graphs Section. Here the DOCSIS data is analyzed and presented. Trends can be spotted, impairments can be
categorized, and impedance mismatches (reflections) can be located. There are several ways to navigate to the graphs.
DISPLAY GRAPHS USING THE DASHBOARD
1. Click the node with PNM impairments as shown below.
Figure 31 - Nodes with PNM impairments
2. On the list that displays, select a cable modem to review.
Figure 32 - CMs serviced by a specific node
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3. Click on the MAC address that is now pinned to the top to display the DS-SNR.
Figure 33 - DS-SNR Graph
4. Use the Graphs Menu (highlighted in red box below) to review specific characteristics [Spectral, US, DS, and PNM]
Figure 34 - Select other graphing criteria
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RECAP: After clicking the small graph overlay on the map, the display changes to full screen, as shown below. Each pinned modem MAC address
will be displayed at the top of the map with a unique color. The first modem MAC address displayed will always be the reference modem
embedded in the headend and will be the only green modem pinned to the map. Pinning modems to the map allows the end user to begin
rendering various graphs depicting a cable modem’s signal quality in that polling period. The first signal quality graph to be displayed is
Downstream Signal to Noise Ratio (DS_SNR).
Figure 35 - Comparing Modem Performance
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ADDING MORE CMS TO REVIEW
The modems under review are the MAC addresses at the top, the reference modem is listed first, in green, and the selected CM in red as shown
below. To add another, just click that CM’s MAC address in the list.
The new CM will be added at the top, in another color. Click the new MAC address to display its results along with the others. Comparing criteria
from modem to modem, and especially the reference modem, can help identify common points of impairment, such as an amp, tap, line extender,
or even a damaged section of hardline.
NOTE: Inventory data
should be reviewed
carefully.
Some CMs may have a
green node health score
while an impairment
count may be greater
than Zero in the 5
th
column.
This would indicate
possible problems with
the service that need
more troubleshooting.
Figure 36 - Adding more CMs to the graph
NOTE: The Inventory list will also identify the IP address of the CMTS. This feature helps when troubleshooting a problem affecting multiple cable
modems by isolating a problem to a specific CMTS.
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ADDITIONAL SIGNAL QUALITY GRAPHS
Additional graphs are generated by Network 360 that help troubleshoot problems and verify when problems have been fixed.
The Network 360 Graphing Menu is found in the upper right of the full-screen display as shown below.
Figure 37 Graphing Options Menu
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SPECTRAL PLOT
Click on the Spectral option on the Charts Menu as shown below.
In this example, the analog pilots are isolated spikes. The yellow-highlighted area represents the video channels and the 100-140MHz carriers are
being used for DOCSIS.
When using a spectral plot, the bandwidth will cover the beginning of the downstream spectrum and the end, typically 860 MHz and in many cases
1006MHz. Hover over any spot on the plot to gain insight into the frequency power, channel number in the lineup, and program source as well as
which impairment. These details are listed in the pop-up box, shown below.
Figure 38 - Spectral Plot
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ZOOM
To get a bigger picture of the plot, zoom in. Click at one end of the area to be zoomed and drag to the opposite end of the section that needs to be
zoomed. When you are complete with your review, simply click on “Reset Zoom.”
Figure 39 - Click, hold, and drag to zoom
VIEW/HIDE CHANNELS
Zoom in on a carrier and click View Channels. Click on a carrier to list the display channels (Transport Streams) multiplexed on that carrier.
Figure 40 - Using the View Channels/Hide Channels option
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DOWNSTREAM GRAPHS
When an impairment is evident from the Dashboard for a CM or group of CMs, drill down to the graphs to help define the impairment and locate it
in the network. Samples of the DS graphs are shown below.
Figure 41 - Downstream Power Received by CM
Figure 42 - Downstream Signal-to-Noise Ratio (SNR)
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Figure 43 - Downstream Codeword Errors
Figure 44 - Downstream Correctable Codeword Errors
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Figure 45 - Downstream Uncorrectable Codeword Errors
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UPSTREAM (US) GRAPHS
Network 360 collects information from both the cable modems and the cable-modem-termination-system (CMTS). With Network 360, return path
signals can be reviewed and analyzed. Samples of the US graphs are shown below.
Figure 46 Upstream Power Transmitted by the CM
Figure 47 - Upstream Power Received by the CMTS
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Figure 48 - Upstream SNR
Figure 49 - Upstream Codeword Errors
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Figure 50 - Upstream Correctable Codeword Errors
Figure 51 - Upstream Uncorrectable Codeword Errors
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PNM GRAPHS
There are three graph types listed under PNM:
(1) Micro Reflections (MR)
(2) Group Delay (GD)
(3) Time Delay Response (TDR).
The Inventory list view displays the MR, GD and TDR measurements for each polling period; 24 hour graphs can be viewed as well.
Figure 52 - PNM Key Metrics
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PNM MICRO REFLECTIONS
The Micro Reflections (MR) alerts and alarms let us know that an impedance mismatch exists somewhere upstream between the CM and the CMTS
and that the normal signal from the CM to the CMTS has been reflected and both signals have been received by the CMTS, like an echo. Receiving
what looks like two signals, offset by the time delay of the reflection, confuses the CMTS and, if it can recover it does so and data is preserved (this
is reported as a correctable codeword error-CCER). If the CMTS cannot recover and data is lost, we refer to this as an unrecoverable codeword
error-UCER.
Figure 53 - The Microreflections Graph
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PNM GROUP DELAY
Group Delay refers to a distortion in the phase of the signal. Normally, phase is linearly related to frequency. If there is an impairment that causes
this ideal relationship to become distorted, we call this Group Delay. Typical causes of group delay include diplex filters and band-pass filters. An
example of the Group Delay graph generated by Network 360 is shown below.
Figure 54 - PNM Group Delay
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PNM TIME DOMAIN REFLECTOMETRY (TDR)
Network 360 generates a TDR graph that helps to locate the impedance mismatch. The relative location of the fault is located on the Y-Axis.
Figure 55 - PNM TDR Graph
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CHANNEL LINEUP
CENTER FREQUENCY VIEW
The Channel Lineup section of the Network 360 application provides visibility into the documented Spectral impairments over the course of the last
24 hours. Profusion utilizes a combination of Cable Labs specifications and custom algorithms to quantify these impairments by center frequency
or display channel.
Figure 56 - Channel Lineup Center Frequency View
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DISPLAY CHANNELS VIEW BY HEADEND/HUB
Select a facility and review the impairments being reported on a specific display channel per your company’s lineup.
Select the impairment for a spectrum graph and more details will appear about the issue.
Figure 57 - Channel Lineup Display Channels View by Headend/Hub
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TIME SLIDER - COMPARING ALERTS AND ALARMS OVER TIME
The default display shows the last 25 hours.
To compare the present status with one in the last 24 hours, click on the Date and Time in the toolbar.
The slider appears as shown below.
Click along the bar to update the dashboard, map view, interval data or spectral graph to any prior polling period within the past 24 hours.
The slider will display changes to the map icons, dashboard metrics, and interval data, at any time within the previous 24 hours..
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APPENDIX
NETWORK 360 LEGENDS
Figure 58 Network 360 Legends
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UNDERSTANDING SPECTRAL IMPAIRMENTS
Network 360 Reports the following DOCSIS impairments as defined by Cable Labs:
Figure 59 - Impairments reported by cable modems in Quick View
In addition to the DOCSIS impairments, Network 360 adds “Aeronautical” as a new impairment, a key tool to use in identifying modems that have
recorded ingress at any of the aeronautical frequencies.
Adjacency
The power of two adjacent carriers should be within 1.75dB of each other. When this threshold has been exceeded,
the impairment is referred to as Adjacency. Look for a faulty amplifier module or equalizer, a faulty or misconfigured
QAM module, or even a filter at the tap.
Suckout
When a portion of the spectrum is missing or severely degraded in power, we call this a suckout.
Wave [Standing Waves ]
When energy reaches coaxial cable fault where an impedance mismatch is present, some of the energy is reflected,
setting up a wave known as a standing wave. As viewed on a spectrum analyzer, the trace appears to be stationary
(standing). Network 360 displays standing waves.
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No Trace Shown
FM Radio [Ingress]
The FM frequency spectrum occupies a portion of the CATV spectrum (88-108MHz). In a drop with leakage present,
when the power levels of an FM signal exceeds the specification, the distortion can cause loss of data and service
degradation.
Roll On, Roll Off
Diplex filters split the US and DS carriers. The start of the DS spectrum has a high attenuation but rises and levels off
quickly. The same is true at the end of the spectrum, where the power falls off. When the Rollon or Rolloff percentage
difference between the flat channels (channels where power is distributed evenly across the spectrum) and those in
the rolloff section exceed the specification, the event is referred to as “Rolloff.”
Tilt
The physics of coaxial cable cause more attenuation at higher frequencies than at lower ones. With a spectrum in the
DS from 54MHz to over 1000MHz, we expect to see the power distribution fall as propagates from the node to the
cable modem. If the amount of tilt exceeds design specifications, the resulting alert will be “Tilt.”
Resonant Peaking
When the reflected energy is out of phase and overlaps the original signal, the distortion results in adding energy at
the overlap, causing a resonant peak. Non-linear distortions in the amplifier or transmitter are typically the cause of
resonant peaking.
No Trace Shown
Aeronautical [Ingress]
As with FM radio, the frequencies used by the airlines also occupies the same spectrum with CATV (108-137MHz, and
225-400MHz). When the system detects peaks of signals at these frequencies, it will report is as an “Aeronautical”
impairment. Quickly identifying and correcting leakage will ensure compliance with the FCC Form 320 rules without
having to depend on costly or time consuming manual testing methods
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REVISIONS
Date
By
Description
Pages Affected
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CONTACTS
www.profusionanalytics.com
Profusion Analytics, LLC
6130 Greenwood Plaza Blvd. Suite 100
Denver, CO 80111
303-952-4917
For Information or Support, contact info@profusionanalytics.com
Rev 0.00 16JAN17