Transcript ATIExtricomCustomerPresentation

The New Frontier of Enterprise
Wireless
April 2009
On the 2.4GHz band, only 3 Non Overlapping
channels.
Frequency Constrains
Radio Basics – Coverage <> Range
Radio Coverage:
Client Connects @ 1 Mbps
The RF energy does not
stop simply because the
client and AP can no
longer interpret the data,
typical Range may be
2,000 meters
Client Connects @ 6 Mbps
Range:
Distance
Client Connects @ 54 Mbps
This is the area a client
can hear an Access Point
and reply successfully –
Typically 10 Metres radius
from the AP at 54 Mbps
Radio Transmission Still Continues
Radio Basics – Why Coverage <> Range
Multipath:
When a client hears the same
data from a single AP several
times, this can corrupt the
signal.
Reflection:
Flat metallic surfaces tend to
reflect RF energy
Refraction:
Metal grids can distort the RF
energy making it unusable
Absorption:
Fluids usually absorb RF
energy as in a microwave.
Wi-Fi So Far…
Traffic contention
Unreliable connection
Wi-Fi So Far…
Traffic contention
Unreliable connection
Slow or wrong mobility
AP-to-AP interference
Coverage gaps hard to fix
APs individually configured
 One AP serves all.
QoS hard to be assured
Only one
channel
per area
AP to AP Interference
Up to 21dBm
between 54
and 1 Mbps
AP coverage
can be more
than double
at low speed
The Trouble with Cells…
802.11 is meant for a Single-Cell Environment
Forces a Single-AP protocol to function in a Multi-AP Environment
Results in trade-offs: a “tug-of-war”
Trade-Offs
Coverage
vs.
Capacity
Capacity
vs.
Mobility
Mobility
vs.
Security
This architecture is impaired by the 802.11 Standard.
Wi-Fi Headaches
High OpEx
» Radio Planning is an Expensive and long task
» Filling up network coverage gaps is a hard task often requiring AP
repositioning
» Wireless Network Tuning is a continuous task requiring well trained
professionals
802.11n with its ability to take advantage of multipath increases the
pain
» Planning AP coverage is almost impossible because of unpredictable
reflections
» AP coverage changes as people move, because being made mostly
of water, humans absorb and diffract radio waves
Wi-Fi Headaches
Low spectrum usage
» Cannot fully reuse channels In order to limit interferences
Network Performances depend upon client devices!
» AP selection made by client
» The less performing client slows down the network
Lack of real mobility
» Roaming decision taken by client
» Roaming Process is critical and not fully reliable as it must be in order
to support VoWLAN applications
Weak physical security
» AP, even if lightweight, store network critical data: Keys, Credentials,
Access Lists, etc.
» AP can be replaced by fake ones in order to access network and grab
credentials
» Hence AP must be physically locked
How Extricom by ATI solves all those issues
A High-Performance Wireless IP Cloud –
The Extricom Channel Blanket™
The Channel Blanket™
Centralize 802.11 Logic,
Distribute the Radio Only
• AP-Anywhere (no need to configure)
• Mobility
• Guaranteed Bandwidth
A “single cell experience” gives:
Steady Throughput
Any-Density RP Positioning
Consistent Client Behavior
Multi-Service WLAN Blankets
1
6
11
Rogue
The Channel Blanket™
Centralize 802.11 Logic,
Distribute the Radio Only
• AP-Anywhere
• Intrinsic Mobility
• Guaranteed Bandwidth
+
Multi-Layer WLAN
Distribute four radios, set to
any combination of channel,
band & mode
• Capacity
• Simplified QoS
• Dedicated Security Monitoring
Traditional APs
cannot use more
than 1 channel in
each band
Multi-Service WLAN Blankets
1
6
11
Rogue
The Channel Blanket™
Centralize 802.11 Logic,
Distribute the Radio Only
• AP-Anywhere
• Intrinsic Mobility
• Guaranteed Bandwidth
+
Multi-Layer WLAN
Distribute four radios, set to
any combination of channel,
band & mode
• Capacity
• Simplified QoS
• Dedicated Security Monitoring
+
TrueReuse™
Dynamic
frequency reuse
• 3X Channel Bandwidth
• Up to 10X System
Aggregate Bandwidth
Cell Planning – Hard Work
Roaming = Poor Quality
Disconnect From AP on Channel 6
Request to join AP on Channel 1
Disconnect From AP on Channel 11
Request to join AP on Channel 6 Authenticate with central Radius
Authenticate with central Radius Connect and start recovering data
Connect and start recovering data
Cell Planning – No Need With Extricom
Even the most basic client gets seamless mobility
Client interacts with a single AP:
Same SSID, Same MAC (BSSID)
QoS – Best Effort – All Channels Congested
Traditional Cell Planning
QoS – Guaranteed – All Channel Dedicated
TrueReuse:
Multiply Bandwidth with Seamless Mobility
“Natural” Frequency Reuse - download
Multiple use of the same channel,
geographically separated
» IEEE 802.11 standard –
CSMA/CA – listen before talk
Distance between APs which will be
“allowed” by the standard to transmit
simultaneously on the same
frequency
» more then 100m, dependent on
Re-use
distance
Re-use
distance
the environment. (office
environment, open space, wall
types, etc.
Re-use
distance
Without TrueReuse
WLAN is a shared media, all clients will share the bandwidth available on the
channel.
On every channel, only one RP or client will transmit at a time. This is
protected by the Collision Avoidance mechanism of the 802.11 standard.
TrueReuse
Channel blanket dynamically “subdivided” into multiple collision domains, to
create simultaneous multiple links without co-channel interference
Switch uses real-time knowledge of link differentials between all clients and
all RPs to determine the re-use opportunity
TrueReuse – How it works?
C1
I2
I1
C2
The link difference is what matters:
» If C1/I1 > Reuse Threshold, then permit transmission to Client 1
» If C2/I2 > Reuse Threshold, then permit transmission to Client 2
The switch uses received signal strength measurements to calculate the
above ratio
What about physical security
Extricom Radio Points (EXRP) are NOT AP
» Are simple radio interfaces
» Do not contain any sensible information at all
» Do not have any flash memory to store any information
» Useless without the switch
Extricom Switches (EXSW) can be secured into locked cabinets or
wiring closets
RP-Switch protocol is not Ethernet
» It is real time with very tight timing constraints (some ns). Almost
impossible to spoof by a PC
» Even tapping into RP-Switch connection will show only what goes on
air
IEEE 802.11N
Benefits without Pains
Full .11n performances
Cellular Approach
?

Full-performance 802.11n
(40MHz) is not possible. There
is only 1 channel available

Mixing .11g traffic strongly
affects .11n performances

Full-performance .11n and .11g

.11n and .11g traffic separated
on different channels
?
?
?
11
?
1+6
?
Channel Blanket
n
1+6
11
g
Captive Portal
Switch controls client’s access to the internet
After client connects to the WLAN, when opening it’s browser he will
receive a login WEB page located on the switch
Clients shall enter their user-name/password, and the switch shall
authenticate the user with the Radius server (using Radius client
protocol)
User can customize default
page by modifying text,
images and colors (no html
knowledge needed), or
upload own html page
Extricom Products
WLAN Switches
Radio Points
Management & Planning
Accessories
Technology Background:
Multi Series 1000 Appliance Platform
High-performance Hardware Platform
Software-configurable
Gigabit Ethernet Uplink ports
Downlink ports: up to 16 GbE with IEEE 802.3af PoE
(software-enabled)
 Products using this platform:
 EXSW-1600
 EXSW-800G
Extricom WLAN Switches
EXSW-1600 / EXSW-800G GbE WLAN Switch
» Support up to 16 or 8 UltraThin RPs (a/b/g/n)
» Up to 4 simultaneous channel blankets
» Hardware based 802.11i security
» Built-in PoE
EXSW-2400 / EXSW-1200 FE WLAN Switch
» Support up to 24 or 12 UltraThin RPs (a/b/g)
» Up to 4 simultaneous channel blankets
» Hardware based 802.11i security
» Built-in PoE
EXSW800 / EXSW400 FE Small WLAN Switch
» Support up to 8 or 4 UltraThin RPs (a/b/g)
» Up to 2 simultaneous channel blankets
» Hardware based 802.11i security
» Built-in PoE
Extricom UltraThin™ Radio Points
Extricom UltraThin™ Radio Points
» UltraThin - No software or processing needed in the RP
» Multiple 802.11n/a/b/g radios
» 802.3af Power over Ethernet (PoE)
» Anti-breach security and built-in Rogue AP detection
EXRP-20 / EXRP-40
EXRP-20E / EXRP-40E
Dual or Quad-Radio, a/b/g, Dual or Quad-Radio,
Integrated Antennas
a/b/g, External Antennas
EXRP-40En
EXRP-30n
Quad-Radio,
n/a/b/g, 3x3 MIMO,
External Antennas
Tri-Radio, n/a/b/g,
3x3 MIMO,
Integrated
Antennas
Accessories
EXRE-10 & EXRE-20 PoE Range Extender
» Double the range of PoE to 200m
» In-line and self-powered
» Drains 1.5W only
100m
Allied Telesis Fiber Extenders
» Up to 700m of cable between switch and RP
» Fully transparent to Switch and RP
» 2 x AT-MC1000
» Multimode fibre link
» 1 x AT-6101G PoE Injector
100m
ATI Labeling
Equipment Label
Carton Box Label
-50
-50
Allied Telesis Success Story
Kawashima Selkon Textiles Co. Ltd
Extricom Management Options
Internal Management
» Web GUI
» Configuration
» Status
» Security
NMS (EXNM-2000)
» Fault Management
» Performance
» Configuration
» Bulk operations on multiple
Switches
EXNM Main Benefits
Single solution to manage large-scale, multi-device
networks
Accelerated system rollouts and easy network updates
Full-featured fault management including notification
capabilities
Real-time network health monitoring
Scheduled bulk operations on multiple switches
Integration with other major NMS solutions
Secure, auditable management of users and user groups
… all this, in an intuitive GUI
EXNM Features
Scalability
» Auto-discovery of up to 2000 switches associated to thousands of
Radio Points (RPs)
» Group configuration of all discovered switches as if they were a single
switch
GUI
Geographic Map View
» Intuitive, Graphic Based
» Monitoring of the whole network
from a single screen
Northbound interface
» for integration with existing NMS
EXNM Features – cont.
System Configuration
Configuration tasks on individual and group of switches (e.g. add same ESSID, reboot,
upgrade firmware…)
Drill down to specific devices from High level Geographic map views
Security Management
Secured client/server sessions
Optional interface to LDAP servers for
user authentication and management
Privileges based on profiles
Audit trails
Security Configuration
EXNM Features - cont.
Fault Management
SNMP traps
Real-time status
Visualization of Extricom Network
Performance
Configurable statistics polling
Graphical reporting on statistical performance of individual devices or of the
whole system
Interoperability
Configurable Northbound interface
for 3rd- party systems (e.g. Tivoli™, etc.)
Ordering Information
Item Number
Description
EXNM-2000/2E
 Max. of 2 Managed Switches
 2 Users only
EXNM-2000/5
Maximum of 5 Managed Switches; 4 users
EXNM-2000/10
Maximum of 10 Managed Switches
EXNM-2000/25
Maximum of 25 Managed Switches
EXNM-2000/50
Maximum of 50 Managed Switches
EXNM-2000/100
Maximum of 100 Managed Switches
EXNM-2000/U
Maximum of Up to 2000 Managed Switches
High Availability
Higher resilience than “N+1”
system integrity
» AP redundancy
» An option to create
redundancy only in high
availability areas
» Uplink Diversity
» Failover transparency
» Eliminating Single Point of
Failure (SPOF)
Competitive pricing over “1+1”
component level
» No need to duplicate AP’s
» 2nd switch licensed as
cascaded
EXSC-1000: Subnet Roaming Controller
Main EXSC
Redundant EXSC
E-mail
DHCP
L
2
Server
L2/L3
Internet
GRE tunneling
128.128.1.1
WLAN Switch is connected to a
specific subnet
128.128.1.1
Using EXSC, a client can seamlessly
connect to a WLAN Switch located in an
other subnet
About Extricom
ex.tri.com — from the English word extricate
[Latin root extricare]
1. To free or release from entanglement or impediments.
2. To untangle and/or simplify communications.
Extricom Mission Statement
Provide high-performance wireless LAN
(WLAN) infrastructure for the Enterprise
Market, enabling the converged triple play of
data, streaming video, and voice over WLAN
(VoWLAN)
About Extricom
Vitals
»
»
»
»
Principal offices in New York, Tel-Aviv, London, Tokyo
Founded 2002
Patented: 18 filed, 9 granted
CTO is one of original members of IEEE 802.11 group
The Proposition
» Superior performance and dramatic simplicity
» Multi-use infrastructure – voice, data, location, video, guest services
Product Recognition
TechWorld Wireless Product of the Year – Finalist (2008)
Communications Solutions Wireless Product of the Year (2007)
CMP CRNTech Top 10 Products of the Year (2007)
VARBusiness Tech Innovator of the Year (2007)
» The most innovative products in the industry sold through the
IT Channel – Wireless Category
Communications Solutions Wireless Product of the Year (2006)
TechWorld Wireless Product of the Year (2006)
» Awarded for Enterprise functionality, performance, and value
Internet Telephony Wireless Product of the Year (2006)
» Awarded for innovation for VoIP over wireless
This is just the beginning!
Thank you!
Visit us on www.alliedtelesis.com