EnGenius EWS7952FP, EWS7952P, EWS1200-28TFP, EWS7928P, EWS5912FP Service Manual

Name: EnGenius EWS7952FP
Brand: EnGenius
SKU: 7704807
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EnGenius EWS7952FP, EWS7952P, EWS1200-28TFP, EWS7928P, EWS5912FP Service Manual

Business Solutions

Gigabit Managed Smart Switch

with Wireless Controller

EWS Switch Series

IMPORTANT

To install this device please refer to the

Quick Installation Guide included in the product packaging.

Table of Contents
Product Overview...............................................................................................................................................	7
Introduction ............................................................................................................................................	8
Key Features........................................................................................................................................	9
System Requirements .......................................................................................................................	10
Package Contents..............................................................................................................................	10
Technical Specifications.....................................................................................................................	11
Getting Started.................................................................................................................................................	14
Installing the Switch ..............................................................................................................................	15
Management Interface .....................................................................................................................	15
Connecting the Switch to a Network ................................................................................................	16
Software Features..........................................................................................................................................	18
Using the Switch....................................................................................................................................	19
Wireless Controller Features.................................................................................................................	20
Managing EWS Access Points............................................................................................................	20
Device Management .........................................................................................................................	22
Summary .......................................................................................................................................	22
Access Points.................................................................................................................................	24
Access Point Settings.....................................................................................................................	29
AP Groups......................................................................................................................................	42
Access Control...............................................................................................................................	44
Wireless Services...........................................................................................................................	46
Monitor .............................................................................................................................................	47
Active Clients.................................................................................................................................	47
Rogue AP Detection ......................................................................................................................	49
System Log ....................................................................................................................................	51
Email Alert.....................................................................................................................................	56
Visualization ......................................................................................................................................	60
Topology View...............................................................................................................................	60
Map View ......................................................................................................................................	63
Floor View .....................................................................................................................................	65
Statistics ............................................................................................................................................	70
Access Points.................................................................................................................................	70

Wireless Clients.............................................................................................................................	71
Real Time Throughput...................................................................................................................	72
Hotspot Services ...............................................................................................................................	73
Captive Portal................................................................................................................................	73
Guest Account...............................................................................................................................	75
Maintenance .....................................................................................................................................	76
Schedule Tasks ..............................................................................................................................	76
Troubleshooting ............................................................................................................................	77
Bulk Upgrade.................................................................................................................................	78
One-Click Update ..........................................................................................................................	79
SSL Certificate................................................................................................................................	82
Check Codes..................................................................................................................................	84
Migration to ezMaster ..................................................................................................................	85
Ethernet Switch Features......................................................................................................................	86
System...............................................................................................................................................	86
Summary .......................................................................................................................................	86
IP Settings......................................................................................................................................	87
System Time ..................................................................................................................................	90
Port Settings..................................................................................................................................	92
PoE ................................................................................................................................................	94
EEE.................................................................................................................................................	97
L2 Feature..........................................................................................................................................	98
Link Aggregation............................................................................................................................	98
STP...............................................................................................................................................	105
MAC Address Table .....................................................................................................................	116
LLDP.............................................................................................................................................	118
IGMP Snooping ...........................................................................................................................	122
MLD Snooping.............................................................................................................................	128
Jumbo Frame...............................................................................................................................	131
VLAN................................................................................................................................................	132
802.1Q.........................................................................................................................................	133
PVID.............................................................................................................................................	134
Management VLAN .....................................................................................................................	136
Voice VLAN..................................................................................................................................	137

Management...................................................................................................................................	140
System Information.....................................................................................................................	140
User Management ......................................................................................................................	141
Dual Image ..................................................................................................................................	142
SNMP...........................................................................................................................................	143
ACL ..................................................................................................................................................	152
MAC ACL......................................................................................................................................	153
MAC ACE .....................................................................................................................................	154
IPv4 ACL.......................................................................................................................................	156
IPv4 ACE ......................................................................................................................................	157
IPv6 ACL.......................................................................................................................................	159
IPv6 ACE ......................................................................................................................................	160
ACL Binding .................................................................................................................................	162
QoS..................................................................................................................................................	163
Global Settings ............................................................................................................................	164
CoS Mapping ...............................................................................................................................	165
DSCP Mapping.............................................................................................................................	166
Port Settings................................................................................................................................	167
Storm Control..............................................................................................................................	169
Security ...........................................................................................................................................	171
802.1x..........................................................................................................................................	171
RADIUS Server.............................................................................................................................	175
Access..........................................................................................................................................	176
Port Security................................................................................................................................	180
Port Isolation...............................................................................................................................	181
DoS ..............................................................................................................................................	182
Monitoring ......................................................................................................................................	184
Port Statistics...............................................................................................................................	184
RMON..........................................................................................................................................	185
Log...............................................................................................................................................	190
Diagnostics ......................................................................................................................................	195
Cable Diagnostics ........................................................................................................................	195
Ping Test ......................................................................................................................................	196
IPv6 Ping Test ..............................................................................................................................	197

Trace Route .................................................................................................................................	198
Maintenance ...................................................................................................................................	199
Configuration Manager...............................................................................................................	199
Firmware Upgrade ......................................................................................................................	200
Appendix ..........................................................................................................................................................	201
Appendix A - Federal Communication Commission Interference Statement .....................................	202
Appendix B - IC Interference Statement .............................................................................................	203
Appendix C - CE Interference Statement ............................................................................................	204

Chapter 1

Product Overview

Introduction

The EnGenius EWS Series of Wireless Management Switches is an affordable centralized wired/wireless management system developed specifically for entry-level small-to-medium businesses. This powerful device can be easily deployed and operated by non-tech experts and installed effortless and quickly. Any organization with limited IT engineer and budget can create a stable and secure wireless network in no time. The system integrates seamlessly with existing routers, switches, firewalls, authentication servers and other network devices, and can be placed within any network, configured to act as a both a Wireless Controller as well as a Layer 2 Gigabit switch, providing robust and centralized management of the whole network through one powerful system. With no additional costs or license purchasing necessary, network administrators can manage and monitor both wired and wireless nodes through a single web interface.

The system can automatically discover any supported EnGenius EWS Series Access Points connected to the network with a simple click of a mouse, self-configure and become instantly manageable. Simply log into the device via any standard web browser and assign APs into cluster groups. Wireless radio, wireless security and other wireless related configurations can all be easily applied to multiple APs simultaneously, eliminating the time consuming process of configuring each and every Wireless Access Points individually.

The user friendly GUI provides instant access to a variety of client and network information including Managed AP List, Auto Discovered AP List, Cluster Grouping List, and Client List with complete MAC/IP Address, Incoming/Outgoing Traffic, Wireless Output Power and other relevant information. Statistics of AP and client traffics are automatically generated into easy-to-understand graphs, providing a visual representation of the network traffic.

Not to forget the Topology View feature that allows administrators to quickly see the whole wired/wireless network topology at real-time for easier planning, troubleshooting and monitoring, as well as Floor Plan View and Map View which allows for quickly locating deployed APs, a helpful feature for large scale AP deployment and multi-site management. There's also an Intelligent Diagnostics feature for administrators to check the status of Wireless APs and provide easy troubleshooting for offline units and even capable of rebooting APs remotely.

Key Features

>10/100/1000 Mbps Gigabit Ethernet Ports

>Dedicated SFP slots for longer connectivity via fiber uplinks and for uplink redundancy and failover

>IGMP and MLD snooping provides advanced multicast filtering

>IEEE802.3ad Link Aggregation

>STP/RSTP/MSTP

>Access Control List/ Port Security

>IEEE802.1X and RADIUS Authentication

>RMON

>SNMP v1/v2c/v3

>Voice VLAN for fast and reliable deployment of VoIP

>Energy Efficient Ethernet (IEEE802.3az) support for better energy saving when more EEE-compliant end devices are available in the market

>Advanced QoS with IPv4/IPv6 ingress traffic filtering (ACLs) and prioritization

>Easy to manage via Web-Based Management GUI for switch deployment

>Standard-based technology, ensuring interoperability with any standard-based devices in the existing network

>Dual firmware images, improving reliability and uptime for your network

System Requirements

The following are the minimum system requirements in order configure the device:

>Computer with an Ethernet interface or wireless network capability

>Windows OS (XP, Vista, 7, 8), Mac OS, or Linux-based operating systems

>Web-Browsing Application (i.e. Internet Explorer, Firefox, Chrome, Safari, or another similar browser application)

Package Contents

The package contains the following items (all items must be in package to issue a refund):

EWS1200D-10T, EWS2910P

>EnGenius Switch

>Power Adapter

>Wall-mount Kit

>Quick Installation Guide

EWS1200-28T/52T, EWS5912FP, EWS7928P/FP, EWS7952FP

>EnGenius Switch

>Power Cord

>Rack-mount Kit

>Quick Installation Guide

Technical Specifications

General

	EWS1200D-10T	EWS1200-28T	EWS1200-52T
10/100/1000Mbps Ports	8	24	48
100/1000Mbps SFP Slots	2	4	4
RJ45 Console Ports	-	1	1
Forwarding Mode		Store-and-Forward
SDRAM	256 MB	256 MB	256 MB
Flash Memory	32 MB	32 MB	32 MB
Packet Buffer Memory	512 KB	512 KB	1.5 MB

	EWS2910P	EWS5912FP	EWS7928P	EWS7928FP	EWS7952FP
10/100/1000Mbps Ports	8	10	24	24	48
100/1000Mbps SFP Slots	2	2	4	4	4
RJ45 Console Ports	-	1	1	1	1
PoE Standard	IEEE 802.3 af		IEEE 802.3 af/at
PoE Capable Ports	Port 1-8	Port 1-8	Port 1-24	Port 1-24	Port 1-48
Total PoE Power Budget	55W	130W	185W	370W	740W
Forwarding Mode		Store-and-Forward
SDRAM	256 MB	256 MB	256 MB	256 MB	256 MB
Flash Memory	32 MB	32 MB	32 MB	32 MB	32 MB
Packet Buffer Memory	512 KB	512 KB	512 KB	512 KB	1.5 MB

Software Features

Wireless Management Features

Access Point Auto Discovery and Provisioning Access Point Auto IP Assignment

Access Point Group Management Visual Topology View

Floor Plan View Map View

Access Point Status Monitoring Wireless Client Monitoring Wireless Traffic & Usage Statistics Real-time Throughput Monitoring Bulk Firmware Upgrade Capability Remote Access Point Rebooting Fast Roaming

Band Steering

Traffic Shaping Intelligent Diagnostics

Access Point Device Name Editing Access Point Radio Settings

RSSI Threshold

Access Point Client Limiting

Wireless Security (WEP, WPA/WPA2 Enterprise, WPA/WPA2 PSK)

VLANs for Access PointMultiple SSIDs Guest Network

Secure Control Messaging (SSL Certificate) Local MAC Address Database

Remote MAC Address Database (RADIUS) Configuration Import / Export

L2 Features

802.3ad Link Aggregation

-Maximum of 8 groups/8 ports per group Port Mirroring

-One-to-One

-Many-to-One

Spanning Tree Protocol

-802.1D Spanning Tree Protocol (STP)

-802.1w Rapid Spanning Tree Protocol (RSTP)

-802.1s Multiple Spanning Tree Protocol (MSTP) MAC Address Table

-8K entries

Static MAC Address

- 256 entries

802.1ab Link Layer Discovery Protocol IGMP Snooping

-IGMP v1/v2/v3 Snooping

-Supports 256 IGMP groups

-IGMP per VLAN

-IGMP Snooping Querier

-IGMP Snooping Fast Leave MLD Snooping

-MDL Snooping v1/v2

-Supports 256 MLD groups

-IGMP per VLAN

Jumbo Frame

- Up to 9216 bytes 802.3x Flow Control

802.3az Energy Efficient Ethernet

VLAN

802.1Q support VLAN Group

- Max 4094 static VLAN groups Voice VLAN

QoS

802.1p Quality of Service

-8 queues per port Queue Handling

-Strict

-Weighted Round Robin (WRR) QoS based on:

-802.1p Priority

-DSCP

Bandwidth Control

- Port-based (Ingress/Egress, 64 Kbps~1000

Mbps)

Broadcast/Unknown Multicast/ Unknown Unicast

Storm Control

Access Control List (ACL)

Layer 2/3

-Support maximum 32 entries (ACL)

-Support maximum 256 entries (ACE) ACL based on:

-MAC address

-VLAN ID

- 802.1p priority	RFC1757
- Ethertype	RFC2674
- IP address	RFC 2863
- Protocol type
- DSCP	Environment Specifications
	Operating Temperature
Security	0 to 40°C (EWS1200D-10T, EWS2910P)
802.1X	0 to 50°C (EWS1200-28T/52T, EWS5912FP,
- Guest VLAN	EWS7228P/FP, EWS7952FP)
- Port-based Access Control
Supports RADIUS Authentication	Storage Temperature
Port Security	-40°C to 70°C
- up to 256 MAC Addresses per port
Port Isolation	Humidity (Non-condensing)
DoS Attack Prevention	5% - 95%
BPDU Attack Prevention
	Physical Specifications
Monitoring	Dimensions (W x D x H)
Port Statistics	EWS1200D-10T, EWS2910P: 240x105x27mm
System Log	EWS5912FP: 330x230x44mm
RMON	EWS1200-28T/52T, EWS7228P: 440x260x44mm
	EWS7928FP: 440x310x44mm
Management	EWS7952FP: 440x410x44mm
Web Graphical User Interface (GUI)
Command Line Interface (CLI)
BootP/DHCP Client/DHCPv6 Client
SSH Server
Telnet Server
TFTP Client
HTTPS
SNMP
- Supports v1/v2c/v3
SNMP Trap
SNTP
Configuration restore/backup
Dual Images
Diagnostic
Cable Diagnostic
Ping Test
Trace Route
MIB/RFC Standards
RFC1213
RFC1493

Chapter 2

Getting Started

Installing the Switch

This section will guide you through the installation process.

Management Interface

The Switch features an embedded Web interface for the monitoring and management of your device.

Management Interface Default Values

IP Address: 192.168.0.239

Username: admin

Password: password

Connecting the Switch to a Network

Discovery in a Network with a DHCP server

Use the procedure below to setup the Switch within a network that uses DHCP.

1.Connect the supplied Power Cord to the Switch and plug the other end into an electrical outlet. Verify the power LED indicator is lit on the Switch.

2.Wait for the Switch to complete booting up. It might take a minute for the Switch to completely boot up.

3.Connect one end of a Category 5/6 Ethernet cable into the Gigabit (10/100/1000Mpbs) Ethernet port on the Switch front panel and the other end to the Ethernet port on the computer. Verify that the LED on the Ethernet ports of the Switch are Green.

4.Once your computer is on, ensure that your TCP/IP is set to On or Enabled. Open Network Connections and then click Local Area Connection. Select Internet Protocol Version 4 (TCP/IPv4). If your computer is already on a network, ensure that you have set it to a Static IP Address on the Interface (Example: 192.168.0.10 and the Subnet mask address as 255.255.255.0).

5.Open a web browser on your computer. In the address bar of the web browser, enter 192.168.0.239 and press Enter.

6.A login screen will appear. By default, the username is admin and the password is password. Enter the current password of the Switch and then click Login. To make access to the web-based management interface more secure, it's highly recommended that you change the password to something more unique.

7.Click IP Settings under the System tab and select IPv4 or IPv6.

8.Click DHCP under Auto-Configuration.

9.Click Apply to save the settings.

10.Connect the Switch to your network (DHCP enabled).

11.On the DHCP server, find and write down the IP address allocated to the device. Use this IP address to access the management interface.

Discovery in a Network with a DHCP server

This section describes how to set up the Switch in a network without a DHCP server. If your network has no DHCP service, you must assign a static IP address to your Switch in order to log in to the web-based management interface.

1.Connect the supplied Power Cord to the Switch and plug the other end into an electrical outlet. Verify the Power LED indicator is lit on the Switch.

2.Wait for the Switch to complete booting up. It might take a minute or so for the Switch to completely boot up.

3.Connect one end of a Category 5/6 Ethernet cable into the Gigabit (10/100/1000Mbps) Ethernet port on the Switch front panel and the other end to Ethernet port on the computer. Verify that the LED on Ethernet ports of the Switch are Green.

4.Once your computer is on, ensure that your TCP/IP is set to On or Enabled. Open Network Connections and then click Local Area Connection. Select Internet Protocol Version 4 (TCP/IPv4).

5.If your computer is already on a network, ensure that you have set it to a Static IP Address on the Interface (Example: 192.168.0.239 and the Subnet mask address as 255.255.255.0).

6.Open a web browser on your computer. In the address bar of the web browser, enter 192.168.0.239 and press Enter.

7.A login screen will appear. By default, the username is admin and the password is password. Enter the current password of the Switch and then click Login. To make access to the web-based management interface more secure, it's highly recommended that you change the password to something more unique.

8.Click IP Settings under the System menu and select Static IP to configure the IP settings of the management interface.

9.Enter the IP address, Subnet mask, and Gateway.

10.Click Apply to update the system.

Chapter 3

Software Features

Using the Switch

Besides the functions of a Wireless Controller, the EWS Wireless Management Switch also possesses functions of a full-featured Layer 2 Ethernet Switch. Use the Controller / Switch tab on the upper left corner of the user interface to toggle between the Wireless Controller or Layer 2 Switch functions.

Wireless Controller Features

Managing EWS Access Points

1.Access Points in the network will be automatically discovered by the EWS and will be listed under the AP(s) Detected list in the Access Point menu.

2. Select the Access Point(s) you wish to manage and click Add.

3. You will be prompted to assign the IP Address under the IP Assignment screen.

Auto-Configuration	DHCP: You can choose to auto assign IP address if there is a
	DHCP server in the network.
	Static: If you wish to manually assign the IP address, choose
	Static. Enter the IP address you wish to assign to the AP and fill
	in the subnet mask, default gateway and DNS server address.
	Keep AP’s Settings: Select this option for the AP to use its
	current network settings.

IP Address	Enter the IP address for the Access Point.

Subnet Mask	Enter the subnet mask for the Access Point.

Default Gateway	Enter the default gateway for the Access Point.

Primary DNS Server	Enter the primary DNS server name.

Secondary DNS Server	Enter the secondary DNS server name (if necessary).

4.Click Apply and the Access Point(s) you’ve configured will be moved to the Managed list. Note that the status of the AP will change from Connecting to Provisioning to Online. Once the status turns

Online, your Access Point(s) have been successfully added to the Managed list.

Note: If the status shows Incompatible Version, please check and make sure that the firmware of the

Access Point and Switch are compatible.

Device Management

Summary

The Summary page shows general system information for the EWS Switch including the Controller Status, the software version, the maximum number of APs the system can manage, MAC Address, IP Address, serial number, and system uptime for the system.

Dashboard

The Dashboard on the upper right corner of the GUI shows the current status of EWS APs that has been

managed by the EWS Switch.

	Managed	This shows the number of APs currently managed by the EWS Switch.
	Managed

	Active	This shows the number of managed APs that currently have an active connection with the
		EWS Switch.

	Offline	This shows the number of managed APs that currently do not have an active connection with
		the EWS Switch.

	Clients	This shows the total number of wireless clients currently connected to all the managed APs.

Controller State

Status: Select whether to Enable or Disable the Controller feature on the Switch.

ezMaster Address: If you have an ezMaster server running and wants to have ezMaster manage this EWS Switch directly, enter the IP Address/domain name of the ezMaster server.

Click Apply to save the changes to the system.

System Information

Controller Version: This is the software version of the device.

Max. Managed APs: The maximum number of APs the device is able to manage.

IP Address: Displays the IP address of the device.

Base MAC Address: Universally assigned network address.

Serial Number: Displays the serial number of the device.

System Uptime: Displays the number of days, hours, and minutes since the last system restart.

Access Points

This page displays the status of all EWS Access Points that your Controller is currently managing as well as all the EWS Access Points in the network that the Controller has discovered. Use this page to add EWS Access Points to your EWS Controller Access Point list.

The EWS Switch is able to manage supported EWS Series Access Points. For the discovery procedure to succeed, the EWS Switch and the EWS Access Point must be connected in the same network. The EWS Switch can discover supported EWS Access Points with any IP address and Subnet settings.

Managing Access Points

EWS Access Points can either be configured individually or configured as a group.

To manage an Access Point individually, click on the Device Name field of the Access Point you wish to configure and you will be directed to a screen where you can configure settings for the Access Point.

To manage Access Points as a group, go to Device Management > AP Clusters to create an AP group and add members into the group. Click on the Group field of the AP you wish to configure and you will be directed to a screen where you can configure settings for the AP Group.

Group settings can be overridden by individual AP settings. For example, if you want to set the transmit power to a lower setting for only a few specific APs, leave the Transmit Power at Auto in the Wireless

Radio Settings of the AP Group, then click on the Device Name field of the Access Point (which is already in a group) you wish to configure and you will be directed to a screen where you can configure override settings for the selected Access Point.

Refresh Countdown Timer

This is the time left before the page auto-refreshes. The countdown is from 15 seconds.

Dashboard

The Dashboard shows the current status of all the EWS APs that has been managed by the EWS Switch.

Managed	This shows the number of APs in the managed AP database that are configured
	with the EWS Switch.

Active	This shows the number of managed APs that currently have an active connection
	with the EWS Switch.

Offline	This shows the number of managed APs that currently do not have an active
	connection with the EWS Switch.

AP(s) Detected List

Reveals a list of all APs in the network that the EWS Switch automatically discovers. Mouse over the discovered Access Point to show general information such as the MAC address, IP address, model name and firmware version.

Remove AP

The Remove button removes selected Access Point(s) from list. Access Points removed will be automatically set to standalone mode with all settings restored to their factory default settings.

Reboot AP

The Reboot button will reboot the selected Access Point(s).

Search Bar

Use the Search Bar to search for Access Points managed by the EWS Switch using the following criteria: Status, model name, MAC Address, Device name, IP address, Firmware Version, Cluster.

Status

This indicates the current status of the managed Access Point.

Status	Explanation

Online	AP is connected and managed by EWS Switch.

Provisioning	AP is currently in the process of connecting to the EWS Switch.

Applying Change	AP is currently applying system changes.

Connecting	AP is currently connecting to EWS Switch.

Offline	AP is currently offline.

Resetting	AP is resetting.

Firmware	AP is currently undergoing firmware upgrade process.
Upgrading

Invalid IP	The subnet of managed AP’s IP address is not the same as the EWS Switch. Please
	remove AP and reconfigure AP to the correct setting.

Incompatible	AP firmware is not compatible with EWS Switch.
Version

Checking	EWS Switch is checking the SSL Certificate of AP.
Certificate

Model Name

Shows the model name of the managed Access Point.

MAC Address

Shows the MAC address of the managed Access Point.

Device Name

Displays the device name of the managed Access Point.

When the AP is not a cluster member, click on this field and you’ll be redirected to the configuration page where you can edit settings such as device name, IP Address, Wireless Radio settings.

When the AP is a cluster member, click on this field to configure settings for individual Access Points by overriding the cluster settings.

IP Address

Shows the IP address of the managed Access Point.

Firmware Version

Shows the firmware version of the managed Access Point.

Last Update

Display the time the Access Point was last detected and the information was last updated.

Group

Displays the AP Group the Access Point is currently assigned to. Click on this field and you'll be redirected to the group configuration page.

Column Filter

Shows or hides fields in the Access Point list.

Access Point Settings

On this page, you can edit the AP's name and password, manually assign an IP address, or change the channel selection, transmit power and other wireless settings of a managed Access Point.

General Settings

Device Name: The device name of the Access Point. Users can enter a custom name for the Access Point

if they wish.

Administrator Username: Displays the current administrator login username for the Access Point. Enter a new Administrator username for the Access Point if you wish to change the username. The default username is: admin.

New Password: Enter a new password of between 1~12 alphanumeric characters.

Verify Password: Enter the password again for confirmation.

Auto Configuration: Select whether the device IP address will use the static IP address specified in the IP Address field or be obtained automatically when the device connects to a DHCP server.

IP Address: Enter the IP address for the Access Point.

Subnet Mask: Enter the Subnet Mask for the Access Point.

Default Gateway: Enter the default Gateway for the Access Point.

Primary/Secondary DNS Server: Enter the Primary/Secondary DNS server name.

Wireless Radio Settings

Country: Select a Country/Region to conform to local regulations. Different regions have different rules that govern which channels can be used for wireless communications.

Wireless Mode: Select from the drop-down menu to set the wireless mode for the Access Point. For 2.4GHz, the available options are 802.11b/g/n mixed, 802.11b, 802.11b/g mixed, 802.11g, and 802.11n. For 5GHz, the available options are 802.11a/n mixed, 802.11a, and 802.11n.

Channel HT Mode: Use the drop-down menu to select the Channel HT as 20MHz, 20/40MHz or 40MHz. A wider channel improves the performance, but some legacy devices operate only on either 20MHz or 40 MHz. This option is only available for 802.11n modes.

Extension Channel: Use the drop-down menu to set the Extension Channel as Upper or Lower channel. An extension channel is a secondary channel used to bond with the primary channel to increase this range to 40MHz allowing for greater bandwidth. This option is only available when Wireless Mode is 802.11n and Channel HT Mode is 20/40MHz or 40MHz.

Channel: Use the drop-down menu to select the wireless channel the radio will operate on. Optimizing channel assignments reduces channel interference and channel utilization for the network, thereby improving overall network performance and increasing the network's client capacity. The list of available channels that can be assigned to radios is determined based on which country the Access Points are deployed in.

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