EnGenius Solution Specialist Certification

Distributed Network Management Solution

Techn echnica icall Training Training

The Neutron Series

Neutron Series I.

Introduction

II.. Fe II Featu atures res and Al Algor gorit ithm hm III.. Pla III Plannin nning g and and Des Design ign IV. Docu Documen mentat tation ion V. Tr Troubl oublesho eshootin oting g and and Mainte Maintenanc nance e VI.. App VI Appli lica cati tions ons VII.Common Questions

The Neutron Series

Neutron Series I.

Introduction

II.. Fe II Featu atures res and Al Algor gorit ithm hm III.. Pla III Plannin nning g and and Des Design ign IV. Docu Documen mentat tation ion V. Tr Troubl oublesho eshootin oting g and and Mainte Maintenanc nance e VI.. App VI Appli lica cati tions ons VII.Common Questions

Up Next

I. Introduction Technica echnicall Training

Neutron Series Overview

The Neutr o n Series Distributed Network Management Solution

Flexible, Scalable, Enterprise-Class Management Soluti on for Large and Small Network s     

Simplified Configuration & Management Enterprise-Class Performance Feature-Rich Access Points & WLAN Controller Switches ezMaster ™ Centralized Network Management NO AP Licensing, Subscription or Tech Support Fees

ezMaster ™ Network

WLAN Controller

Managed


Complete Scalability Start small or go big with the Neutron Series

Manage a few or 1,000+ APs, Unlimited number of networks


Unlimited Flexibility No matter what your business size, Neutro n Series is flexible enough to meet your network needs.

Managed networks locally, or… Centrally manage remote locations


ezMaster Deployment Options


Target Audience Neutron Series Is Ideal for Deployment in Expandable Environments:       

Large, geographically diverse organizations Managed Service Providers (MSPs) Healthcare Facilities Hotels & Resorts School Districts & Campuses Public Sector Chain Store/Branch offices

Neutron Series Overview EWS2910P

Neutron Controller Switches EWS5912FP

EWS7928P

Manage

EWS7952FP

Manage 50 APs

20 APs 8 GbE Ports

EWS7928FP

24 GbE Ports

10 GbE Ports

2 x 1G SFP Uplink

48 GbE Ports

4 x 1G SFP Uplink

8P PoE af

8P PoE af/at

24P PoE af/at

24P PoE af/at

24P PoE af/at

(61.6W)

(130W)

(185W)

(370W)

(740W)

20 Gbps

24 Gbps

switching

switching

Desktop

13” 1U Rackmount

56 Gbps switching

19” 1U Rackmount

104 Gbps switching

Neutron Series Overview EWS1200D-10T

Neutron Controller Switches EWS1200-28T Manage

8 GbE Ports

EWS1200-52T

50 APs

24 GbE Ports

2 x 1G SFP Uplink

48 GbE Ports

4 x 1G SFP Uplink

Non-PoE

20 Gbps switching

Desktop

56 Gbps switching

104 Gbps switching

19” 1U Rackmount


EWS300AP

Neutron Series Managed Access Points

EWS350AP

EWS310AP

EWS360AP

Indoor Single Band

Dual Band 802.11n

EWS660AP

EWS860AP

Outdoor IP55

Outdoor IP68

Dual Band 802.11n/ac Internal Antenna

Ext. Antenna

2x2:2 300 Mbps

2x2:2 300 + 300 Mbps

2x2:2 300 + 867 Mbps

450 + 1300 Mbps

2x2:2 300 + 867 Mbps

3x3:3 450 + 1300 Mbps

High Power

High Power

High Power

High Power

High Power

High Power

1 x GbE Uplink 1 x GbE LAN

1 x GbE Uplink 1 x GbE LAN PSE

1 x GbE Uplink

3x3:3

Support 802.3at PoE

Support 802.3af/at PoE °

0 to 40 C

°

20 to 60 C


Neutron Series Wall Plate Access Points

EWS500AP

EWS510AP

Indoor Single Band

Dual Band 802.11n Internal Antenna

2x2:2 300 Mbps

2x2:2 300 + 300 Mbps 1 x GE Uplink 4 x FE LAN (1 x PoE Out)

Support 802.3af/at PoE °

0 to 40 C


Neutron Series Wave 2 Access Points

EWS370AP

EWS371AP

Indoor Dual Band 802.11n/ac Wave 2

Dual Band 802.11n/ac Wave 2

Internal Antenna

External Antenna

4x4:4 800 + 1733 Mbps

4x4:4 800 + 1733 Mbps 2 x GE Uplink Supports Aggregation

Support 802.3at PoE (Failover Support) °

0 to 40 C


Neutron Series Wave 2 Access Points

EWS870AP

EWS871AP

Outdoor IP67 Dual Band 802.11n/ac Wave 2

Dual Band 802.11n/ac Wave 2

Internal Antenna

External Antenna

4x4:4 800 + 1733 Mbps

4x4:4 800 + 1733 Mbps 2 x GE Uplink Supports Aggregation

Support 802.3at PoE (Failover Support) °

0 to 40 C


Features

ezMaster Feature List

Centralized Management

Comprehensive Monitoring

•Configure, manage and monitor thousands of Neutron devices •Cross-Network AP Management •AP Group Configuration

•System Status Monitoring •Device Status Monitoring •Wireless Client Monitoring •Wireless Traffic and Usage Statistics •Visual Topology View •Floor Plan View •Wireless Coverage Display •Map View •Rogue AP Detection

AP Config & Management •Auto Channel Selection •Auto Tx Power •Client Limiting •Client Isolation •L2 Isolation •VLAN Isolation •VLAN Tag •Traffic Shaping •Fast Roaming •Band Steering •RSSI Threshold •Multiple SSID •Secure Guest Network •LED On/Off Control •Background Scanning

Management & Maintenance •Kick/Ban Clients •Captive Portal •Seamless Migration •One-Click Update •Bulk Firmware Upgrade •WiFi Scheduling* •Syslog •Remote Logging •E-Mail Alert •SmartSync Redundancy* •ezRedundancy* (N+1)


Controller Comparison* Software Features Project Based Management Cross-Network AP Management AP Group Configuration Auto Channel Selection Auto Tx Power Background Scanning Multiple SSID Client Limiting Client Isolation L2 Isolation VLAN Isolation VLAN Tag Traffic Shaping Fast Roaming Band Steering RSSI Threshold AP LED On/Off Control Secure Guest Network Wireless Coverage View Floor Plan View Map View Rogue AP Detection Visual Topology View Wireless Client Fingerprinting Wireless Traffic & Usage Statistics Bulk Firmware Upgrade One-Click Update Captive Portal Kick/Ban Clients Event Log Remote Logging Email Alert Intelligent Troubleshooting WiFi Scheduling (SSID On.Off) AP Scheduled Reboot

ezMaster

EWS Switch

v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v -

v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v


ezMaster System Requirements Recommended environment for managing up to 500 APs • CPU: Intel i3 3.6GHz dual core or above • RAM: 4GB minimum • HDD: 500GB (actual requirement depending on log size) • OS: Microsoft Windows 7 or later + VirtualBox 4.3.30 (or similar virtualization products) Recommended environment for managing up to 1000 APs • CPU: Intel i5 3.2GHz quad core or above • RAM: 4GB minimum • HDD: 500GB (actual requirement depending on log size) • OS: Microsoft Windows 7 or later + VirtualBox 4.3.30 (or similar virtualization products) Network Topology Requirements • At sites where APs are deployed: a DHCP enabled network for APs to obtain IP address


Firewall/Port Configuration

Depending on how your network is designed, you may need to open ports on your firewall. The following outbound ports MUST be opened in the firewall at the site where the ezMaster server is located in order for ezMaster to register with the ezReg server. Port Description TCP 80 HTTP port, ezReg communication UDP 53 DNS port, ezReg communication The following inbound ports MUST be opened in the firewall at the site where the ezMaster server is located in order for remote access points to communicate with the ezMaster server. Port Description UDP 1234 Custom port, CAPWAP protocol HTTP port, Captive Portal, port can be defined by user TCP 80 (default) The following outbound ports MUST be opened in the firewall at the remote site where the AP/switch is deployed in order to communicate with ezMaster. Port Description UDP 1234 Custom port, CAPWAP protocol TCP 80 HTTP port, ezReg communication UDP 53 DNS port, ezReg communication HTTP port, Captive Portal, port can be defined by user TCP 80 (default)

Up Next

II. Features and Algorithm Technical Training

Features and Algorithm

CAPWAP Control And Provisioning of Wireless Access Points Protocol

Main functions:  AC Discovery  Authentication  Configuration Provisioning  WTP Frame Tunnel Mode


CAPWAP Machine State

AP Boots UP

Discovery

Reset

Image Data

DTLS Setup

Join

Run

Config


Neutron Series CAPWAP Discovery Discovery  Multicast (Unicast if AC IP assigned manually)  UDP  Destination IP: 239.255.1.3  Destination Port: 1234  Interval: around 10~20 secs Common Issue:  Discovery packet will be dropped if L2 switch filter unknown multicast address.


EWS CAPWAP Echo Request/Response WTP Echo Request  Unicast  UDP  Destination IP: AC IP  Destination Port: 1234  Interval: 20 secs  Change to offline state: no echo respond over 90 secs AC Echo Response  Respond when receive WTP echo request  Change to offline state: no echo request over 90 secs


ezMaster/Access Point Registration Process


Registering ezMaster to ezRegistration Server In order to manage remote device using ezMaster, you must first register ezMaster to the ezRegistration server. You may skip this section if you are managing only local devices or if you are manually redirecting each AP to ezMaster. 1.

In the ezMaster user interface, click on the Global Settings menu.

2.

Under Adm in Acc ou nt , fill in the fields and click App ly to register your ezMaster to the ezRegistration server. Take note that a valid email address is required for you to unregister your devices in the event of ezMaster server failure.


Adding Devices to ezMaster Device Inventory Before managing a remote AP/switch, you must first bind the AP to ezMaster's Device Inventory by ‘registering’ the device. Skip this section if you are managing only local devices or if you are m anually redirecting each AP to ezMaster. 1.

Once ezMaster has been registered with the ezRegistration server, you can start registering your APs and adding them to ezMaster’s device inventory by clicking on the ‘Device Inventory’ icon.

2.

Next, click on the ‘Add Device’ button.

Enter the MAC Address, Check Code and Description of the device you want to register using a semicolon (;) to separate each field. eg. MAC Address;Check Code;Description To register more than one device at the same time, enter the information of one device per row by pressing Enter. Click the " Register" button once you are done.

Note: The 'check code' of the AP can be found on either the device label at the bottom of the AP. If not, access the AP's user interface and find it under the "Management > Controller Settings" . Contact your


Manual AP Registration For instances when remote registration is not possible, you may manually register the AP to the ezMaster through the option below:

The AP will appear on the pending list if successful:

Ensure that the AP is able to connect to the internet for remote registrations by using the built in P ing Tool on the GUI.


ezMaster Connectivity Test

Connectivity Test Procedure 1. 2. 3. 4. 5. 6.

Ping gateway Resolve DNS: ezreg.engeniusnetworks.com Ping ezreg.engeniusnetworks.com Test ezReg TCP port 80 Test ezReg UDP port 53 Test ezM controller port UDP 1234 from ezreg


Neutron Series CAPWAP Version Compatibility

v1.05.38-c1.8.12  

v : Main software version c : CAPWAP version  1st digit: Protocol design change  2nd digit: Feature change/enhancement  3rd digit: bug fix  AC will show “Incompatible Version” on AP list if either 1st or 2nd digit of CAPWAP version are not identical between AC and AP e.g. AC c1.8.12 + AP c1.6.24: Incompatible AC c1.6.24 + AP c1.8.8: Incompatible AC c1.8.12 + AP c1.8.8: Compatible


Map & Floor Plan View Map & Floor Plan View


Group Management

An Access Point Group is a dynamic, configuration-aware cluster of Access Points in the same subnet of a network. A group provides a single Access Point to manage the cluster of Access Points as a single wireless network instead of a series of separate devices.


Fast Roaming 2

AP1

AP2

1

3 <50ms

1. Client logs on AP1 2. The access key of the client is passed on to all connected APs in the network 3. When the client moves between AP1 to AP2, the roaming procedure takes place


Background Scanning • Periodically doing channel hopping to get APs, utilization for that channel. • Scan one channel at a time, minimize throughput impact. scanning is the basis of auto channel selection, selection, rogue AP detection, detection, and • Background scanning auto TX power adjustment. adjustment . Active probe scan for very short period

Channel n for scanning

…

Current channel

time

Period for scan single channel

Full cycle to scan all channels


Background Scanning

Site survey for all available channel takes very long period

Site survey

…

Current channel

time

Period for scanning all available channel

Background scan takes very short period

Channel n for scanning

…

Current channel

time

Period of scanning single channel

Full cycle to scan all channels


Background Scanning

Passive Scan   

Beacon interval is 102.4 ms Beacon interval when multiple SSID enabled on EWS AP: 409.6 ms Dwell time of passive scan needs at least 500 ms


Background Scanning

Beacon


Background Scanning

Active Scan Active scan is the process of sending a probe request frame from wireless client and listening a probe response from AP. 

Dwell time of active scan is no longer than 50ms Null probe request

Directed probe request


802.11 Association process

Learning time: 1 sec, AP would suppress probe response in learning time for learning new STA’s capability Aging time: 60 secs, the learned entry will be expired after aging


Auto Channel Selection •

6 11

-66

-45

1

-50

Managed AP

50

-70

6

•

6 -65 -68

11 Rogue or neighbor

Signal strength relation

11

•

Using the information collected by Background Scanning, ezMaster has the channel utilization statistics of all channels. With this info, APs can automatically adjust their radio channel for the best channel utilization and performance. Background Scanning must be enable for this feature to operate. Auto Channel Selection will take place on an AP when the Channel of the AP is set to Auto (under Wireless Radio Settings).


Auto Channel Selection

Wi-Fi Interference


Adjacent-Channel Interference on 2.4GHz

5 MHz Wide


Adjacent-Channel Interference on 5GHz


Noise Floor (Background Noise) Noise floor is the ambient or background level of radio energy on a specific channel. Background energy can include modulated or encoded bits from nearby 802.11 transmitting radios or unmodulated energy coming from non-802.11 devices such as microwave oven, Bluetooth device, cordless telephone, and so on.

Real World Scenario The noise floor of 5GHz is almost always lower than 2.4GHz because 5GHz frequency band are less crowded


3 Modes of Band Steering

Force 5G: Always encourage dual-band STA associate with 5 GHz Prefer 5G: Encourage dual-band STA associate with 5 GHz if RSSI < specific value Band Balance: Encourage dual-band STA associate with 5 GHz if RSSI < specific value and the ratio of 5G client < specific value


New Band Steering Algorithm

Prefer 5GHz: Specify the minimum received signal strength indicator (RSSI) required for dualband wireless clients to associate to the 5GHz b and. If the client’s RSSI value drops below this threshold, it will only be able to connect to the 2.4GHz band.

Band Balance: Automatically balances the number of newly connected clients across both 2.4GHz and 5GHz bands. For example, the value 75 indicates that the AP will place 75% of all


New Band Steering Algorithm Client sends probe request

AP determines whether client support dual band

NO

Client associates to 2.4GHz

YES (PREFER 5GHz / BAND BALANCE ) Client associates to 5GHz

IF RSSI meet or is higher than specified threshold

AP checks 5GHz RSSI threshold value

IF RSSI lower than specified

IF BAND BALANCE selected

AP checks current no. of 5GHz clients


Switch Management

Manage all EWS switch models through the ezMaster. Options available for management are the following: • Port Settings: Allows to view the Link Status, adjust port speed, toggle Flow Control, and enable/disable the port. • Power Budget: Tweak the maximum power budget you can allocate on the switch.


One-Click Update

Receive new firmware notifications in GUI so users can conveniently check that the current firmware on their APs is the most up-to-date version.

Notifications will appear when new firmware is available.


One-Click Update

One-Click Update EWS Switch: Get list of latest FW version: Execute on user’s browser Get FW image and push to AP: Execute on EWS switch ezMaster : Get list of latest FW version: Execute on ezMaster Get FW image and push to AP: Execute on ezMaster

Troubleshooting on EWS switch: • PC ping business.engeniusnetworks.com • EWS switch ping business.engeniusnetworks.com Troubleshooting on ezMaster: • ezMaster ping business.engeniusnetworks.com


Bulk Firmware Update

Upgrade firmware for managed APs: Single or multiple units to save time, and avoid repeating the process over and over again.


Guest Network

The Guest Network is designed to allow users to manage “visitors” ac ces s w it hi n t he network. When visitors associate with the unique SSID for accessing Internet, the administrators can manage and monitor the network from the central location to prevent the malicious attack to applications at the local network. SSID: Private

Internal Database

Internet

SSID: Guest-Public

Limit guests to access the internal database


Captive Portal

Supports: 1. Internal Authentication (Local Database – 500 Accounts for EWS Controllers) with Internal/External Login Page 2. External Authentication (RADIUS) with Internal/External Login Page 3. 3rd party cloud captive portal integration, i.e. Cloud4Wi


Captive Portal Create different captive portal profiles and apply directly to SSID

Splash & Go: No authentication required. Users can access the network as soon as they associate. Local User DB: Authenticate users using local user database. Users must enter a username and password before being allowed on the network (500 accounts for EWS Controllers). External RADIUS Server: Authenticate users using an external RADIUS server. Users must enter a username and password before being allowed on the network.


Captive Portal Choose to use user defined (external URL) splash page or built-in internal splash page Upload custom logo for internal splash page

Preview of internal splash page

Enter custom message or terms of use if desired


Captive Portal Option to allow users to continue to the original URL they intend to visit or force the user to visit a specified URL after a successful authentication. Option to disconnect user based on: a.Session time b.Idle time

Manually specify an IP range users can access prior to sign-on. When you are operating the hotspot in a hotel, for example, you can include the hotel’s Web site in the walled garden. A walled garden for a corporate office, on the other hand, can i nclude Web pages that


Smart Search


Visual Topology View

Displays real-time network topology with information like: 1. 2. 3.

IP Address Ports connected No. of clients connected

Expand/collapse topology tree with a simple click, drag to pan, rotate mouse wheel to zoom in/out just like Google Map.


Smart Troubleshooting Check status of APs and provide easy troubleshooting instruction for offline units. PoE powered APs can be rebooted remotely for easy troubleshooting.


Client Fingerprinting

Client Fingerprinting allows administrators to easily identify wireless clients connected to the network. Instead of displaying only the MAC Address, the EWS Switch will also identify the Operating System and Client Info.

Traditional

EnGenius



Prerequisites • Clients must be set up to request IP addresses automatically using DHCP.




Network Usage Statistics

“Meeting Room E” seems to have high traffic

This Client may be HOGGING the AP?? Further detailed analysis can be deduce from the number of clients and the total throughput used


Kick/Ban Wireless Clients

Kick Client Use this function to temporarily disconnect a wireless client from the network. The disconnected client can simply reconnect manually if they wish to. Ban Client Use this function to permanently block a wireless client from the network. Go to Device Management > Access Control to unblock the wireless client.


Access Control

Whitelist Allow access only to specific clients per project. Current maximum entries is 32. Blacklist Bar devices whose MAC addresses are on this database.


Rogue AP Detection

EWS AP scans wireless channels (802.11a/b/g/n/ac) to identify unknown wireless access points.


• •

Rogue AP Detection

Detect 3rd party APs in environment Determine if external APs on conflicting channels and


Controller Event Log & E-mail Alert

The Neutron series will maintain an internal log of all events and alarms. E-mail notification can be set to be sent upon encountering events including: - Rogu Rogue e AP Dete Detect cted ed - AP Lo Lost Co Contact - Topol opolog ogy y Chan Change ge - AP maxi maximu mum m use users rs reac reache hed d

E-Mail Alert Logon Alert Task

E-Mail Server (SMTP Authentication Required)

Up Next

III. Planning and Design Technical Training

Planning and Design •

Design – – – –

•

–

Continuously monitor performance

Troubleshoot and Remediate – –

•

Provision and Install Validate coverage / capacity performance Document

Monitor and Report –

•

Identify stakeholders Gather requirements Identify network components, locations, and settings Standardize configurations

Deploy – –

•

WLAN Life Cycle

Identify and troubleshoot issues Make changes and Document

Optimize and Grow – –

Tune and optimize network Identify areas for growth

Design Standardization

Planning and Design

Design Standardization • How many SSIDs? – Modern networks have 1-3 SSIDs per band • Guest / Resident / End-User • Staff • Devices (e.g. security, VoIP, appliances)

– Client isolation and security policies per SSID • • • •

Within AP and AP to AP client isolation VLANs Security settings per SSID Traffic shaping policies per SSID

• How many APs? – Where are the APs physically being deployed – Channel plan for both 2.4 GHz and 5 GHz

Planning and Design

Design Standardization

• Standardize configuration for all devices (switches, APs, etc.) • Assign static IP addresses to equipment – Note that many APs typically associate to network via DHCP by default – Part of initial configuration during staging or installation – Use VLANs and a management VLAN

• Change default access settings – User passwords – SNMP communities (v1/v2c,v3) & passwords (v3)

Planning and Design

Provisioning Process • Start up your EWS switch • Set static IP address for EWS switch • Implement switch settings – VLANs, ACLs, port isolation, etc.

• Define your AP group(s) • Stage equipment before initial deployment – Plug in each AP, assign static IP, name (location) and group – Change unique settings per AP and switch – Document

Planning and Design

Critical Settings

Critical Settings

• IP Settings: – Use static IP address – Use private or public DNS servers

• PoE Power Budget – Make sure number and type of devices does not exceed load – especially be careful for quantity of PoE+ devices (i.e. 3+ stream APs)

• Layer 2 Features – Link aggregation (for backhaul) – STP/Spanning Tree Protocol

Planning and Design

Spanning Tree Protocol Deployment Case

Client with bridged Ethernet and Wireless Adapter

Planning and Design

Spanning Tree Protocol Deployment Case

Client with bridged Ethernet and Wireless Adapter

Planning and Design

Critical Settings

• VLANs – If you are defining multiple SSIDs, use VLANs to keep them separated – VLANs need to be fully defined – PVIDs and “untagged VLANs” defined for wired ports with client devices

• ACLs – Rule set that acts as a firewall to allow or deny traffic based on particular ports – Useful for client isolation – Scheme needs to be defined in advance and should be uniform for all ports on all switches

Planning and Design

Tools for the Wi-Fi Engineer

• Wi-Fi Environment Scanner (essential tool) – Look for beacon frames in the environment – Graphically depict environment

• Examples: – inSSIDer by Metageek (PCs) – WiFi Scanner (Macintosh) – WiFi Analyzer (Android) – Airport Utility (iPhone)

Planning and Design

Wi-Fi Scanner

Courtesy: CWNP Wi-Fi Conference 2014 Presentation: Your Phy Type (MetaGeek)

Planning and Design

Site Survey • Site Survey Software – Software packages that model AP signal propagation based on location, antenna, power, and channel settings – Used for predictive modeling, passive site surveys, active site surveys

• Examples: – Tamograph – Ekahau – AirMagnet Survey

Predictive Modeling

Planning and Design

Predictive Model • Inputs – Floor Plans (to scale) – Location of walls and other structure on the site (e.g. elevator shafts)

• Outputs – # APs, their locations, channels and power settings – 2.4 GHz and 5 GHz propagation coverage – Channel and transmit power plan – Problematic coverage areas – Problematic capacity areas

Planning and Design

Predictive Model

• Advantages – Does not require an on-site visit – Provides relatively quick method of establishing a design – Validate coverage and capacity profiles – Mitigate self-interference from neighboring APs (enforces proper channel / tx power planning)

• Disadvantages – Based on simplified assumptions – Attenuation and reflection of actual walls and floors may be quite different than “standard values” – Specified locations of APs may not be practical

Planning and Design

Predictive Model Example: Walls

Predictive Model Example

Planning and Design

Predictive Model: 2.4 GHz Signal

Predictive Model 2.4 GHz Coverage

Planning and Design

Predictive Model 2.4 GHz SNR

Planning and Design

Predictive Model 2.4 GHz Channel Map

Planning and Design

Passive Site Surveys •

Pre-Deployment survey

•

Post-deployment troubleshooting

•

Listens for wireless beacon frames by location

•

Can integrate spectrum analysis by location

•

Can use directional antennas to triangulate external sources of interference

•

Procedure: – Walk the property to create a map of coverage and interference from surrounding APs – Put up test APs to measure signal propagation through walls / floors (AP-on-a-stick)

Passive Site Surveys

Planning and Design

Passive Site Surveys •

Advantages

•

Measure actual signal propagation through walls / floors

•

Detect and identify any external sources of Wi-Fi interference in the environment

•

Adapt channel / tx power plan to environment

•

Disadvantages

•

On-site

•

Time consuming

•

Snapshot in time: does not indicate any changes in environment

Planning and Design

Active Site Surveys •

Post-Deployment Verification

•

Existing Network Troubleshooting

•

Test performance of wireless network by location

•

Can integrate spectrum analysis by location

•

Procedure: – Connect to the wireless network – Walk the property to create a map of achieved signal strength, interference, PHY rates, and achieved throughput – Observe channel and power settings on the APs

Planning and Design

Active Site Surveys •

Advantages

•

Measure actual network performance

•

Adapt channel / tx power plan to environment

•

Disadvantages

•

On-site

•

Time consuming

•

Snapshot in time: does not indicate any changes in environment

Planning and Design

Passive Site Survey

Courtesy: http://www.tamos.com/products/wifi-site-survey/

Planning and Design

Do’s and Don’ts

• Stagger APs horizontally and vertically – Avoid hallways – Do not stack floor to floor

• Space out APs evenly – Allows for static and uniform transmit power settings – Simplifies channelization process

• Use building structure (e.g. walls, corners) to isolate neighboring APs • Avoid mounting behind obstructions (e.g. above ceilings, near ductwork/pipes, etc.) • Follow good wiring and mounting practices

Planning and Design

Hallway Wi-Fi Deployment

•

Co-Channel Interference

•

No One is Working in the Hallways

•

AP Should NOT Be in Line of Sight to Each Other

•

One of the Greatest Barriers is the Bathroom

•

Low Signal Noise Ratio

• Major Coverage Holes Where Wi-Fi is Needed • Not designed for capacity • Poor roaming decisions • Lots of Omni Directional APs in the Hallway

Planning and Design

Hallway Wi-Fi Deployment APs Deployed in Hallways 2.4 GHz Signal Coverage

2.4 GHz Co-Channel Interference

• Significant coverage problems • Significant self-interference at APs (impacts upstream traffic)

APs Deployed in Rooms 2.4 GHz Signal Coverage

2.4 GHz Co-Channel Interference

• Strong coverage in rooms where devices are used Minimal self-interference

Planning and Design


Place the AP as close to client devices as possible • •

Minimize obstructions between AP and clients Facilitate client device’s ability to talk back to the access point

Place neighboring APs to NOT be in line of sight of each other • •

Minimize co-channel interference with other APs on the network Maximize channel re-use

Planning and Design


Providing Wi-Fi Coverage Where it Matters!

Up Next

IV. Documentation Technical Training

Documentation Documentation

•

Document your requirements and constraints

•

Capture any requirements not implemented

•

Separate source from the equipment itself – indicates how the network SHOULD be configured

•

Typically done during provisioning and updated during or just after installation

•

Hard part: Keep it updated as changes get made

Know what you have, why it is there, and how it is supposed to be configured.

Documentation: Documentation: Property AP Documentation

Property

– Network map (logical) – Property map (physical) • AP locations • MDF / IDF closets

– Cabling infrastructure (CAT6a, fiber, etc.) – Digital photos – Site survey reports – Property contact information – Hours of operation – Access restrictions

– WAN circuit information – VLAN / IP Subnet Scheme – ACL Rules – User access types (e.g. end-customer, staff, appliances, etc.) – System-wide settings (e.g. fast roaming) – Redundancy / failover schemes – Requirements and constraints (especially anything “skipped”)

Documentation

Access Point

– Channel (per band) – Power (per band) – SSID settings • VLAN tag • Security (e.g. WPA2AES passphrases) • Client isolation

– External antennae selection and orientation – Non-standard mounting – External devices – Unique settings

– – – – – – – – – –

Make Model Firmware Serial Number MAC Address IP Address Username / Password Physical Location Power source Uplink IP Address / Port – Config file backups

Documentation

Backend

– Port Configuration • Device plugged in • VLANs (tagged & untagged) • PoE • Speed / duplex • IP / MAC ACLs

– System settings – Unique settings

– – – – – – – – –

Make Model Firmware Serial Number MAC Address IP Address Username / Password Physical Location Uplink IP Address / Port – Config file backups

Documentation

Network Diagram

Documentation

Network Diagram

Up Next

V. Maintenance Mai ntenance and Troubleshooting Technica echnicall Training

Maintenance and Troubleshooting



• Verify the physical layer coverage (active site survey) – Channel and power settings – Signal to Noise / Signal to Interference – Roaming

• Validate ability to connect to SSIDs and the Internet – – – – – – –

Security settings VLAN assignments Client isolation settings AP and switch configurations Network services (DHCP, DNS) Controller performance Bandwidth performance


Network Maintenance

Network Maintenance

• Planned Maintenance – Firmware upgrades – Optimization • Channel and power settings • Point-to-point path optimization (e.g. tree trimming)

– On-site equipment upgrade / swap-out

• Unplanned Outages – Equipment failure – Bandwidth failure – Cut / disconnected cabling


• •

Post-Deployment Network Verification Monitoring

Network Monitoring

Manual: Someone must look at what the network is doing Automated: Network tells you about problems – System sends alerts when there are device issues or other thresholds exceeded – Issue: Can get inundated with useless alerts, causing real issues to get hidden in the mess

•

Self Healing: Automated monitoring and mitigation of network issues – Spanning tree protocol and link aggregation – Auto reboot of down equipment (e.g. web power switches)


Troubleshooting: Common Issues

• Throughput – Network performance “too slow” – Applications not performing properly

• Device Connectivity – Devices cannot connect – Devices connect intermittently – Devices disconnect when roaming

Maintenance and Troubleshooting •


Insufficient RF Coverage

•

– Self-Interference from your own APs – External Interference from neighbor APs – Non Wi-Fi Sources

– Dropped connections when moving between APs – Low connection speeds at border areas of coverage

•

Insufficient RF Capacity – Too many client devices for too few APs – Typically design for 30-50 client devices per AP

•

Hidden Node – Two clients talk to the same AP but cannot hear each other – May attempt to talk at same time – collision at AP

Interference

•

Typical – – – –

Fixes

AP Model / Antenna AP Locations Channel Transmit Power


Troubleshooting 101


• Systematic and Iterative Process • Avoid making multiple changes simultaneously • Avoid “knee- jerk” reactions •

Architecture Path: Outside Moving In – – – –

•

•

– – – –

WAN Link(s) Routers Switches Access Points

Verify – Devices online – Intended configuration matches actual

OSI Model Path: Inside Moving Out

•

Physical Layer MAC Layer Network Layer Application Layer

Verify – Site behavior – Intended configuration matches actual

Up Next

VI. Applications Technical Training

The Neutron Series

Wireless Wall Plate Access Point All-in-One Communication “hub” for In -room Wireless Connectivity

Zero Effor t Installation

IPTV IP Phone

RJ45 Pass Through Port 10/100/1000 RJ45 Uplink (PoE In) 110 Punch Down Block Mounting Bracket for standard

Laptop Mini Fridge

EnGenius Wall Mount AP

The Neutron Series

Resort Hotel Wi-Fi Planning and Solution

The EnGenius Soluti on Wide range of product portfolio for entire resort Wi-Fi deployment.  Intelligent network management platform.  Exceptional coverage and reliable Connectivity  Scalable and expandable without additional cost e.g subscription fee, extra hardware upgrade and licensing fee. 

Recommended Models Indoors : EWS300AP, EWS360AP, EWS510AP Outdoors: EWS660AP, EWS860AP Management Platform: ezMaster, EWS7928FP

The Neutron Series

Budget Hotel Wi-Fi Planning and Solution

The EnGenius Soluti on  Good wireless coverage and reliable connectivity  Affordable solution  Fast deployment  Ease of management Recommended Models Indoors: EWS300AP, EWS310AP, EWS500AP

The Neutron Series

Retail Chain Store Wi-Fi Planning and Solution

ezMaster

The EnGenius Solution     

Distributed Network Management – Seamlessly manage multiple sites Graphical monitoring for each group Email push alerts for network issues Lower Capital & Operating Expenses Tying customer loyalty with Wi-Fi

Customer Stories

Topica Training Education Centre (Vietnam) Project Requirement • •

Online training education centre. Wi-Fi Connection for more than 800 concurrent users includes staff, teachers and students

Product and Solution • •

The Neutron Series – Distributed Network Management Solution (Controller-based) 43 units of EWS310AP + 1 unit of EWS7928P

Customer Stories

ZunYi National Museum (China)

Beijing

GuiZhou

Background of the SI • Beijing based • Specialized in networking solution for National Museum across China

Remote Monito ring fro m Beijing

Integrates EnGenius ezMaster with Distributed Network Management Solution to monitor the status of access points from Beijing office.

Customer Stories

The Gateway Resort Corbett National Park (India)

One of the resort under Taj Group

Area 1 Internet EWS210AP EWS210AP

EWS210AP

EWS210AP

Switch

Firewall

EWS660AP EWS210AP

Area 2 EWS210AP

z

Core Switch

EWS210AP

Switch EWS210AP EWS660AP

EWS210AP

Switch EWS210AP

Wi-Fi coverage for indoor and outdoor area

Area 3 Network

EWS660A P

EWS210AP

EWS210AP

Customer Stories

The Gateway Resort Corbett National Park (India)

Heatmap to design and plan the

Wi-Fi solution

Centralized Management 

Both indoor and outdoor access points

Comprehensive Monitoring 

System Status Monitoring Device Status Monitoring  Wireless Client Monitoring  Wireless Traffic and Usage Statistics Maintenance One-click update 

Up Next

VII. Common Questions Technical Training

Common Questions

VLAN Isolation

When using different VLANs on multiple SSIDs, does the switch port where the AP is connected to need to need to be set as a tagged port (trunk port) or untagged port (access port)? When configuring an AP with different VLANs per SSID, the port where the AP is connected to must be set to tagged/trunk.

Common Questions

Local Database

How many users can be created on the local database? 500 for the Neutron Controller Switch, no limit on the ezMaster.

Common Questions

External Splash Page

If I have a third-party portal authentication server, can I use the ezMaster‘s authentication function? If yes, how can I configure it? Yes, select External Splash Page on the captive portal options and key in the IP/URL of the portal authentication server.

Common Questions

RSSI Overlap

What’s the threshold RSSI value should be appropriate ?

Our recommended overlap between APs is about -75dBm.

-75dBm

Common Questions

EnGenius Solution Specialist Certification

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