Table of Contents
Advertisement
3.4.2 Using MIMO with Legacy Clients
In addition to supporting up to 300-Mbps throughput per radio for 802.11n clients, MIMO can improve the reliability and speed
of legacy 802.11a/b/g client traffic. When an 802.11a/b/g access point does not receive acknowledgement that a frame it sent
was received, it resends that frame, possibly at a somewhat lower transmission rate. If the access point must continue resending
frames, it will continue lowering its transmission rate. As a result, clients that could get 54-Mbps throughput in an interference-
free environment might have to drop to 48- or 36-Mbps speeds because of multipath interface. However, because MIMO
technology makes better use of multipath, an access point using MIMO can continue transmitting at 54 Mbps, or at least at a
better rate than it would in a pure 802.11a/b/g environment, thus improving the reliability and speed of 802.11a/b/g client traffic.
Although 802.11a/b/g client traffic can benefit somewhat from an 802.11n access point using MIMO, supporting such legacy
clients along with 802.11n clients can have a negative impact on 802.11n client traffic. Legacy clients take longer to send the same
amount of data as 802.11n clients. Consequently, legacy clients consume more airtime than 802.11n clients do, causing greater
congestion in the WLAN and reducing 802.11n performance.
By default, the SmartPath AP supports 802.11a/b/g clients. You can restrict access only to clients using the IEEE 802.11n standard.
By only allowing traffic from clients using 802.11n, you can increase the overall bandwidth capacity of the access point so that
there will not be an impact on 802.11n clients during times of network congestion. To do that, enter the following command:
radio profile <string> 11n-clients-only
You can also deny access just to clients using the IEEE 802.11b standard, which has the slowest data rates of the three legacy
standards, while continuing to support 802.11a and 802.11g clients. To do that, enter the following command:
no radio profile <string> allow-11b-clients
By blocking access to 802.11b clients, their slower data rates cannot clog the WLAN when the amount of wireless traffic
increases.
3.5 Mounting the SmartPath AP (LWN602HA)
Using the mounting plate and track clips, you can mount the SmartPath AP to the tracks of a dropped ceiling grid. Using just the
mounting plate, you can mount the SmartPath AP to any surface that can support its weight (3.3 lb., 1.5 kg).
This document covers the following methods for mounting the SmartPath AP (LWN602HA):
• Section 3.5.1, Ceiling Mount—Using the mounting plate and track clips, you can mount the SmartPath AP to the tracks of a
dropped ceiling grid so that it is suspended upside down against the ceiling.
• Section 3.5.2, Plenum Mount—Using the mounting plate, hanger clip, and hanger frame, you can mount it in the plenum
above a dropped ceiling.
• Section 3.5.3—Using the mounting plate, cable, quad-toggle, and locking device, you can suspend the device from a beam,
bracket, or any object that can support its weight (3.3 lb. [1.5 kg]).
• Section 3.5.4, Surface Mount—Using just the mounting plate and some screws or nails, you can mount the SmartPath AP
directly to any surface that can support its weight.
NOTE: In addition to these methods, you can also mount the SmartPath AP on a table using the set of four rubber feet that ship
with the product. Simply peel the rubber feet off the adhesive sheet and press them against the underside of the
SmartPath AP in its four corners.
3.5.1 Ceiling Mount
To mount the SmartPath AP to a standard 1"-wide track in a dropped ceiling, you need the mounting plate, two track clips, and
two Keps nuts that ship with the SmartPath AP. You also need a drill, a wrench, and—most likely—a ladder. Nudge the ceiling
tiles slightly away from the track to clear some space. Attach the track clips to the ceiling track, and then fasten the mounting
plate to the clips, as shown in Figure 3-12. When you have the mounting plate in the correct location, cut or drill a hole in the
ceiling. Use it to pass through the Ethernet and power cables.
Chapter 3: The SmartPath AP (LWN602HA) Overview
724-746-5500 | blackbox.com
Page 37
Advertisement
Chapters
Table of Contents
