Datasheet

WLAN clients
WMS 2300
PoE switch
WSS 23XX
IP network
WSS 23XX
WAP 23XX
1
Distributed architecture
with WSS at the edge
2 Centralized architecture
with WSS at the core
1
2
MP-432
MP-432
MX-2800
existing 802.11 a/b/g standards, in terms
of capacity, range and reliability. Refer to
Figure 2 for an 802.11 a/b/g/n compar-
ison. As part of WLAN 2300 Release
7, Nortel is introducing two Trapeze
branded products — an 802.11n Access
Point(TrapezeMP-432)andanewhigh-
capacityswitch(TrapezeMX-2800).The
TrapezeMP-432APwillrunonexisting
WLAN 23xx security switches. These are
optional products, intended for those
customers with an immediate need for
802.11n.
Nortel’s recommendation is that before
installing any new technology, particu-
larly one based on a draft standard,
it is important for customers to first
consider all of the implications and
create an approach that meets the needs
and business goals of your organization.
Deploying 802.11n involves much more
than just an exchange of hardware and
software. A wide range of issues need to be
carefully considered (sidebar below), and
developing a comprehensive plan span-
ning applications, clients and infrastruc-
ture is recommended. Refer to the Nortel
white paper “Ten factors to consider
before deploying 802.11n” (available for
download at www.nortel.com/wlan) for
additional information.
2
Figure 1. WLAN 2300 Centralized WLAN System
Control and Provisioning
Protocol (CAPP)
establishes a
secure control plane between
a WSS and its managed WAPs.
Trapeze MX-2800 controller
for high capacity 802.11n
deployments.
Trapeze MP-432 provides
the 802.11n wireless
interface. It can run on
a WLAN 23xx switch
and/or the Trapeze
MX-2800 controller.
WLAN Management System
(WMS) 2300
for system-wide
planning, conguration and
management
WLAN Security Switch (WSS)
23XX
controls the access points and
can be deployed either at the edge
of the network (1) to support directly
connected APs, or elsewhere in the
network (2) to support indirectly
connected APs across the LAN.
WLAN Access Point (WAP) 23XX
provides the 802.11 a/b/g wireless
interface and can be directly connected
to either a PoE switch, or a WSS.
Each WAP is dependant on a WSS for
operation.
Access Points are dependant on WLAN Security Switch for operation
Considerations for
802.11n adoption
• Application drivers
• Risk comfort level
• Support strategy for clients
• Controller processing
• Access point powering
• LAN considerations
• Deployment planning
• Budget
• Timing
• Vendor selection
802.11b 802.11g 802.11a
802.11n*
Compatibility 802.11b 802.11b,g 802.11a 802.11a,b,g,n
Number of channels
3 non-
overlapping
3 non-
overlapping
Up to 15 non-
overlapping
channels
(country
specic)
Same as 802.11 a/b/g
using 20 MHz channels.
Restricted to 1 in 2.4 GHz
and 3 in 5 GHz using
40 MHz channels
Typical Indoor range 100 ft - 300 ft 100 ft - 300 ft 40 ft - 300 ft
Expected to be 2X range
of 802.11a/b/g
Typical outdoor range
(Line of sight)
400 ft - 1500 ft 400 ft - 1500 ft 100 ft - 1000 ft N /A
Data rates
11, 5.5, 2 and
1 Mbps
54, 48, 36, 24,
18, 12, 9 and 6
Mbps
54, 48, 36, 24,
18, 12, 8 and 6
Mbps
Up to 600 Mbps
(up to 300 Mbps in
WLAN 2300 R7)
Wireless medium DSSS, 2.4 GHz OFDM, 2.4 GHz OFDM, 5 GHz
OFDM-MIMO in 2.4
and/or 5 GHz
Figure 2. 802.11a,b/g,n comparison
* Ratification of standard expected 2H 2009