802.11n Facts Part Three

If you didn’t read facts #3 and #4 check them out first, but here’s 802.11n facts #5 and #6…

Fact #5

Although a new POE (Power-Over-Ethernet) standard, 802.3at is being worked on, the current POE standard, 802.3af may not supply enough power for access points with configurations of 3×3 or more antennas.  Workaround may exist if users change the number of antennas or devices per PEO switch, but for now this lack of power supply is an important consideration.

Fact #6

Users may need to upgrade their access point’s wired network connection to Gigabit Ethernet because of high data throughput.  According to Cisco, a 40-MHz channel in the 5-GHz band can place a peak demand on its Ethernet connection of as much as 300 to 400 Mbps.  This will prove to be too much for a single or double 100 Mbps Ethernet connection to support.

Don’t forget to stop by tomorrow for facts #7 and #8.