Листовка для Cisco Cisco Prime Network Control System Appliance
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Q. How does Cisco ClientLink select the 15 clients to provide beam-forming for? Is it the first 15 devices,
the 15 in most need, or do they have to be statically set up for ClientLink?
details. ClientLink takes action on a per-need basis. Remember: If your client is very close to the access point
or there’s no interference, it might be getting the best data rate.
or there’s no interference, it might be getting the best data rate.
Q. Is Cisco developing better management tools to proactively determine client health?
A. We already have client health measurements in our newly designed client screens in Cisco Prime
™
Network
Control System Series Appliances.
Q. How close are 802.11n access points for performance? Are the Cisco Aironet 11n access points
similar to the E3000 Linksys for throughput, coverage, etc? I’ve heard mixed messages when
comparing the two.
A. 802.11n performance is comparable across the Cisco Aironet 1140 and 1260 Series and Aironet 3500 Series,
with the difference that the 3500 Series has CleanAir technology. The 1040 Series, on the other hand,
provides about 25 percent less in coverage and range support. Linksys 802.11n access points are
considerably less robust and not enterprise-ready. Please see the following white paper for 802.11n
performance details:
Enterprise-ready is defined by Cisco VideoStream, ClientLink, BandSelect, CleanAir support that is introduced
in the silicon on access points, versus off-the-shelf, consumer-class wireless chipsets
Q. How many simultaneous multicast streams will Cisco VideoStream technology support?
A. The number of simultaneous video streams changes based on access point model. Currently, internal testing
shows about 10 or so for the Cisco Aironet 1040 Series, about 20 for the 1140 Series, and 23 for 3500 Series.
Q. Can alerts be sent notifying of RRM activity? For example, when coverage holes are detected or when
channels are being changed?
A. Yes. RRM is fully instrumented. You can see alerts in Cisco Wireless Control System (WCS) or via
SNMP/Syslog messages or email. WCS allows you to see a top five access point view showing the access
points with the greatest number of coverage holes, which is a good indication of coverage problems.
Q. Suppose you have a classroom with 30 students, each with a laptop, and maybe half of those students
with another wireless device. Would a total of 45 devices bog down one access point?
A. It really depends on what these students are doing. If everyone is simply browsing the web, it is not a problem.
The important factor is channel utilization. A Cisco Aironet access point is able to support a very large number
of devices. The determining factor is the type of application used and the throughput requirements.
Q. Please explain the differences and overlaps between radio resource management and Cisco CleanAir
features.
A. Please refer to the following white paper for more details:
http://www.cisco.com/en/US/solutions/collateral/ns340/ns394/ns348/ns1070/white_paper_c11-599260.html
Q.
Can we use the Cisco Aironet 1142 Access Point with the “N” capability, or do we have to migrate to
the latest 3000 Series access point to support the Cisco Cius
™
and iPad affectively for video
conferencing?
A. Cisco provides many 802.11n access points to upgrade from the 1142. Our 1040/1140/1260/3500 Series
access points are the enterprise access points. The 3000 Series is the consumer grade Linksys product.