Dell Sonicwall Sonicpoint Ace, Руководство по началу работы

Страница: 13 / 53

| 11
bandwidth needed, taking note of other hardware-based
factors is just as important.
Some of the more important hardware decisions include:
• Number of access points versus user density – If too
many users are serviced by a single access point,
maximum transfer rates are reached and that point
may become a bottleneck for the whole system.
• Bandwidth – How much data is moving upstream and
downstream for a given type of user?
• Ethernet cabling – Where are you running the powered
Ethernet (PoE) cable to and how are you securing that
cable. Is your PoE switch able to power all access
points?
• Hubs / Switches – Your wireless deployment has to tie
back into your network security appliance and LAN
resources at some point. What speed is needed for your
Ethernet connection to accommodate the number of
access points you are installing? Also consider where
your key networking devices are deployed and how
they will connect efficiently with your wireless
appliances.
• Upgrade your Ethernet connections for 802.11n – In
most cases, 802.11n wireless hardware requires more
bandwidth than a single (or even dual) 10/100 Ethernet
connection can handle. Gigabit Ethernet connectivity
between the WLAN and the LAN is required to take full
advantage of 802.11n speed.
• Power up that PoE for 802.11n – Part of your wireless
network planning should include verifying that your PoE
equipment is 802.3af compliant, and that a full 15
watts of power can be supplied to each SonicPoint.
Solutions to RF
interference and
barriers
These days, finding an environment with no RF interference or
noise is nearly impossible. Only if you are setting up an office
in a secluded redwood grove can you count on RF interference
to be a non-issue. Even then, the redwood trees might just be
among those fitted with high-gain cellular antennas, an all-
too-common occurrence today. Regardless, you should expect
SonicPoint_ACe_GSG.book Page 11 Monday, September 29, 2014 5:23 PM
Draft
Document