802.11n Facts Part Four

It’s time for 802.11n facts #7 and #8.  If you haven’t been following this post you should read the Previous Facts as well.

Fact #7

Because of the high data throughput and Gigabit Ethernet, wireless controllers may experience bottlenecks.  Wireless switches that perform traffic decryption that were once able to handle many different access points may not be able to support as many as before.

Fact #8

According to Cisco, 802.11n has the ability to provide backward compatibility with 802.11 a, b and g devices, so these devices will understand the information necessary to allow 802.11n devices to operate in the same area.  But for some time, 802.11n will need to operate in the presence of legacy 802.11a/b/g devices, creating mixed-mode operation.  Until all devices have been upgraded or replaced to 802.11n devices you will have to plan on supporting 802.11 a, b and g legacy devices.

Don’t forget to stop by tomorrow for the last post in this series