Cisco Cisco Aironet 350 Wireless Bridge 信息指南
It is suggested that you perform a site survey before you install a WLAN. In site survey you
can detect all kinds of interference sources. This includes non−802.11 sources such as
microwave ovens, cordless phones, etc. You can collect information on key parameters such
as Signal strength, Noise, and Data rates that exist in the actual deployment scenario. Based
on this, WLANs can be planned and deployed accordingly. For more information on site
survey, refer to Wireless Site Survey FAQ.
can detect all kinds of interference sources. This includes non−802.11 sources such as
microwave ovens, cordless phones, etc. You can collect information on key parameters such
as Signal strength, Noise, and Data rates that exist in the actual deployment scenario. Based
on this, WLANs can be planned and deployed accordingly. For more information on site
survey, refer to Wireless Site Survey FAQ.
Q. Would the frequency hopping (FH) equipment of another vendor that
sits next to our direct sequence (DS) equipment have any negative
effect?
sits next to our direct sequence (DS) equipment have any negative
effect?
A. Yes. By its very nature, an FH product hops across the entire 2.4 frequency band.
Therefore, it causes interference to WLAN 802.11 b/g products that operate in 2.4 GHz.
There is no way to control where an FH unit hops.Try one or all of these steps:
Therefore, it causes interference to WLAN 802.11 b/g products that operate in 2.4 GHz.
There is no way to control where an FH unit hops.Try one or all of these steps:
Change the location of the access point and/or the base of the cordless phone.
♦
Switch to channel 1 on the access point. If that does not work, try channel 11.
♦
Use a remote antenna on the client card if it is a PCI− or ISA−based card and you
have that option.
have that option.
♦
Operate the phone with the antenna lowered, if that is an option.
♦
If all else fails, use a 900−MHz phone instead of a 2.4−GHz phone.
♦
Q. My WLAN system sees interference from a cordless phone. What can
I do?
I do?
A. Most cordless phones operate in 2.4 GHz and are another major source of interference. See
Would the FH equipment of another vendor that sits next to our direct sequence (DS)
equipment have any negative effect? for more information.
Would the FH equipment of another vendor that sits next to our direct sequence (DS)
equipment have any negative effect? for more information.
Q. What is the maximum speed of 802.11 a,b,g standards?
A. 802.11b has a maximum speed of 11 Mbps while 802.11g and 802.11a have 54 Mbps.
Q. Does Cisco currently support 802.11n?
A. Yes. Cisco supports 802.11n. However, 802.11n is supported only in 1250 series APs
currently. For more information on 802.11n, refer to Cisco 802.11n Design and Deployment
Guidelines (
currently. For more information on 802.11n, refer to Cisco 802.11n Design and Deployment
Guidelines (
registered customers only
) .
Q. What antenna should I use for the Cisco Aironet 1010 access point?
A. This device has a built in antenna. You do not need to connect an antenna.
The Cisco Aironet Antenna Reference Guide has all the information about the different types
of antennas and accessories that Cisco provides as a part of the Cisco WLAN solution.
of antennas and accessories that Cisco provides as a part of the Cisco WLAN solution.
Q. I have an access point about 50 feet away from my client. The signal
is very weak and there is significant interference in the path (paper
storage). What should I do to obtain proper coverage?
is very weak and there is significant interference in the path (paper
storage). What should I do to obtain proper coverage?