Wireless :: Information About Difference Between Wireless Channels

Dec 31, 2012

i want to know that what is difference between channels wireless's? such as channels 1 & 6 if a AP have channel 6 can be secure?

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Cisco Wireless :: Can't Set 1552 To Use 802.11a 40 MHz Channels

Apr 22, 2012

I am testing a Cisco 1552 and cannot seem to set it to use the 40 MHz channels. In the controller GUI is is set to use 40 MHz channels under DCA for 802.11a but when I go into the CLI and show the config of the AP it shows the channel width to be 20 MHz. If I try to change the channel width through the CLI I get "radio is not disable or ap not set to customize" or something like that. The radio is disabled globally and locally. Is there a way to set the AP or radio to a "customize" mode?
 
What prompted this was I was testing the throughput on it and can only get a 130 mbps data rate connection to it. The data sheet says it will support 300 mbps with the 40 mhz channel so I was trying to test it atteh higher rate.The HW is a Cisco 4402 with 7.0.230 software on it, 1552E.

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Cisco Wireless :: 5508 - Not All 5 GHz Channels Being Used

Sep 30, 2012

I've got a deployment of 1142N APs using a pair of 5508 controllers running 7.3.101.0.  We're in the United States and the country is set to "US".  I've added the UNII-2 channels to Auto-RF on the controllers via "config advanced 802.11a channel add 100" and so forth.  According to the output of "
show advanced 802.11a channel", I've enabled every 5 GHz channel that's legal for use in the US:
 
802.11a 5 GHz Auto-RF Channel List
Allowed Channel List......................... 36,40,44,48,52,56,60,64,100, 104,108,112,116,132,136,140, 149,153,157,161,165
 
My confusion comes because the automatic assignment of 5 GHz channels is heavily biased toward just a few of them, with most of the available space being ignored.  Here are the 5 GHz channel assignments from a large, single-story building with 31 APs:
 
(qty 2) 36
(qty 6) 40
(qty 5) 44
[ code].....
 
A total of nine channels are used (two of them only once) while twelve other channels are ignored completely.  Many of these APs are close enough to hear one another, so assigning seven of them to ch. 48 makes no sense.
 
Looking at my campus as a whole, I've got numerous APs using channels 36, 40, 44, 48, 149, 153, 157, 161, and 165.  I've got at least one each using channels 52, 56, 60, 64, 112, 116, and 132.  Nothing at all is on 100, 104, 108, 136, and 140.  I am using 20 MHz wide channels, between, so all are independent.
 
Can anyone shed light on A) why my distribution is so heavily skewed toward the first nine channels, and B) how I can learn whether certain channels are being avoided due to the presence of radar, etc, on the frequency?  I'd like to take full advantage of 5 GHz by having as little channel re-use as possible.

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TP-Link ADSL2+ Wireless :: Why TD-W8968 Use Two Channels

Apr 17, 2013

Region : India
Model : TD-W8968
Hardware Version : V1
Firmware Version :
ISP :

According to inSSIDer the router seems to be using two wifi channels (10+6) and inSSIDer is recommending to move to a standard channel (1,6,11).

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Linksys Wireless Router :: EA6500 Broadcasting Two 2.4 MHz Channels?

Oct 30, 2012

I set up EA6500.  All kinds of problems with anything on the 2.4 MHz band.  My wireless desktop on the 5.0 MHz band was flawless.  So I ran Xirrus Wi-Fi Inspector (freeware).  The router is transmitting two 2.4 MHz signals!  One is the SSID I set up and named.  The other one is identical in every way except that the BSSID is slightly different.  It is a non-broadcasted SSID that shows up on every device as "Other Network."  I was on the phone with Cisco Support tonite, and they were great as usual but had no answer.  If you change the channel on the 2.4 MHz band, the shadow network also changes to the same channel (this blew the Tech's mind).  We reset the router to factory settings and started over.  They are calling me back tomorrow.  This router has great features on paper, but so far, it has not delivered. 

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Linksys Wireless Router :: E4200v1 Never Selects DFS Channels?

Jan 31, 2013

The Cisco E4200 is supposed to support something called DFS (Dynamic Frequency Selection).  These are wifi channels that, due to radar operating on the same frequencies in certain areas of the US, the FCC requires devices using them to do what's called "radar avoidance" -- they're supposed to scan the channel periodically and, if a radar signal is detected on said channel, they have to vacate the channel for a specified period of time (typically around 30 minutes).  Because of this, a DFS channel cannot be selected manually by the user -- it has to be selected automatically and vacated automatically in case radar is detected.  So, I have my E4200 channel set to "Auto(DFS)"
 
The list of WLAN channels is here: [URL]
 
More background: each allowed 5 GHz channel is 20 MHz wide in the US.  However 802.11n does what's called "channel bonding" -- it actually uses two channels side-by-side for increased throughput.  E4200 owners will notice a channel width setting and one of the options is 40 MHz or Auto (20 MHz or 40 MHz) -- this is what uses two channels combined.  I happen to have this option set to "Auto (20 MHz or 40 MHz)".
 
I discovered, through experimentation, that the router will ALWAYS select channel 149/153 as the operating channel if there are no other wireless APs in the area (channel 149 as primary and channel 153 as secondary).  I always wanted to see the AP select a DFS channel, so I brought home a bunch of access points and started occupying spectrum.  I put AP #1 on channel 149/153 and rebooted my E4200, at which point it picked channel 157/161.  So I put AP #2 on channel 157/161 and rebooted the E4200, and it skipped channel 165 (note that there's not enough spectrum up there for 40 MHz, which is probably why it got skipped) and selected channel 36/40.  I put AP #3 on channel 36/40 and rebooted the E4200 and to no surprise it picked channel 44/48.  So I put AP #4 on channel 44/48 and it picked...channel 149/153?!?!
 
Just to be certain that there isn't a certain threshold required to force the AP to select a DFS channel, I moved all 4 APs RIGHT NEXT TO the E4200 such that their signal strengths exceeded -40 dBm, and then rebooted the E4200.  It STILL picked channel 149/153!
 
Just what are the criteria required for the E4200 to select a DFS channel?!?  DFS is advertised in the user menu, but I can't find any way to get the AP to select one of those channels.  Does the AP *really* support them, or does it just say it does?  If the E4200 does NOT really support DFS, then Cisco/Linksys should remove the term "DFS" from the user menu -- it is deceptive!!
 
Oh, I should mention that I'm in Santa Clara County -- Saratoga, CA.  I checked the FCC database on radars and as far as I can tell, there are NO radars on DFS frequencies around here.

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Linksys Wireless Router :: Change Channels On WRT160n V3?

Jan 22, 2011

Change the channel on my router WRT160n?

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Cisco Wireless :: 2504 Controller - Can AP Be Set With Static Channels

Nov 11, 2012

We have a Cisco 2504 controller and approximately 35 AP's. Some of the AP's are located directly above each other (on another floor). When I run a basic annalyzer, it appears that there is some adjacent AP traffic, the controller has some of the close AP's with the same channel, so there is some RF interferance. The AP's currently are all setup for "G" and majority of the AP's are 1200 series, most of them are 1242's. Should and can the AP's be set with static channels so that there is no adjacent signals? If so where in the controller can that be done?

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Cisco Wireless :: Setting Channels Supported By 1552

Oct 15, 2012

Couple questions on setting channels on Cisco 1552s. First off almost all locations are fibered and set as RAPs. It doesn't allow me to set the channel assignment method to "global" to use DCA. It says it can't be done for a mesh backhaul AP. Is there any way around this? Next, when the channel is set to "custom" there are only 5 channels listed to choose from in the UNII-3 band. The spec sheet on the 1552 shows it supports other frequencies in the UNII-2 and UNII-2 extended range. Why can't I select those channels?

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Linksys Wireless Router :: 5GHz Radio Channels Available On EA4500

Jul 17, 2012

What Radio Channels are available for selection when operating the EA4500 in Wireless-N (5 GHz) mode only? I need to find a router that can be specifically set on channel 120 in the UK

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Linksys Wireless Router :: How To Use Channels On Newly Purchased EA3500

Mar 2, 2013

So anyone can use this channels without any restrictions and without register this AP.So how can i use this channels on my newely purchased EA3500? from drop down menus only low range is available.ive tried 2 different FW from linksys site (Cisco FW and Smart WiFi FW) in both i cant use this frequences .Also for this router no alternate FW available because inside Marvell chipsets (im not understood correctly why, but i suppose all about "closed FW").Also ive tried to change timezones (in hope that this range is magically appear), but magic not happened. So i have question: why i cant use this 5gHz range when its legal in my country?May be Linksys support watch on this problem and release new firmware for Russia with support of this channels?Also i knew that E3200 have this range enabled on default FW, but not on EA3500.

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Linksys Wireless Router :: Does The E3000 Support 5GHz Channels

Jul 23, 2011

I have read various forum postings saying to get the best performance from a wifi router you have to use channel 149 or greater and that 36-48 have a weaker signal strength and thus less range/speed.I live in New Zealand and when I select the wireless channel drop list for the 5GHz band it only lists 5 options - Auto (dfs), 36, 40, 44 and 48. I have read forum posts of people stating you should switch to 149 or greater and I have seen screenshots showing the drop list with 149 selected. But I don't have that option.If I check the Status > Wireless page it shows that channel 36 is being used (for Auto).Am I doing something wrong? Do E3000's in this part of the world not support 149 etc?I spoke in a live chat to a support rep who told me that all E3000's are the same everywhere in the world and there was little to no difference in firmware between them. I was also told that channels 36-48 are high gain channels and so there is no need for the other channels, which contradicts other articles I have read which state 36-48 are weaker channels.

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Cisco Wireless :: Using 2.4 And 5ghz Channels On 1240 Access Point?

Jan 13, 2013

I am looking into upgrading a customers wireless network and they are looking at using a few 1240 access points for both internal and external connections. Their question is can one access point support both channels simultaneously? They would like to connect an antenna on the inside of the building on the 5ghz channel and another externally on the 2.4ghz channel.

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Cisco Wireless :: Manually Assigning Channels And RRM Setting With WLC 5505

Mar 16, 2013

My wireless network consists mainly of approximately 1400 AP's 900 x 3602's, 500 x 3502's,The majority of these AP's especially the new ones have been manually optimised for channel and power settings. We paid an external surveyor to survey and optimise the AP's.   
 
We have a few 5505 WLC's and the channel assignment method is set to "Freeze" ,My question is, if someone invokes a channel update on a WLC, will the WLC override the original manual channel setting if the WLC thinks it should be changed?  And will the original setting be lost forever unless a restore is performed from the WLC Database?

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Linksys Wireless Router :: E4200 To Bond Two Channels Using 2.4GHz Spectrum

May 31, 2011

Using firmware 1.0.01, has anyone successfully gotten the E4200 to bond two channels using the 2.4GHz spectrum?  I just can't get it to bond.  I assume it's a firmware issue, yet to be fixed.  I've tried settings Auto (20 or 40), and nada.  It has never bonded.  The 5 GHz bonds fine.  There are a few interferences by the neighbours wifi, but nothing substantial that should prevent bonding.  I have this router at school too, and the same thing happens there, with the same firmware, so I doubt it's an interference issue.  I'm using WPA2 Personal encryption.  I tried auto channel, and setting channels to 1, 3, 5, and 11, nothing changed.
 
I know I'm not bonded because A. Max link speed is ~144Mbps, and B. using a program like inSSIDer tells me I'm only using one channel on the 2.4Ghz spec.

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Linksys Wireless Adapters :: WUSB600N - Unable To Scan And Connect To Channels Higher Than 11?

May 8, 2011

I have a WUSB600N version 1, with the newest driver (offical 3.0.10.0), my Windows 7 Ultimate installation has the proper regional settings, and within the driver setting the Linksys device has the correct country region (#1, 1-13).However, I am unable to scan and connect to channels higher than 11. as tested with the network manager in windows plus inSSID scanner. My other devices on the same network see the higher channels.

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Cisco Wireless :: 6513 Access Points Keeps On Going Up / Down Port Channels Created Automatically

Oct 12, 2011

I have 6513 which have wism and sup 720 , for some reason the access points keeps on going up and down the port channels created automatically but i cannot see any configuration inside it as shown below .I tried to edit the interfaces and add the trunk configuration but it cannot be modified . [code] the Wism status is showing up but the APs Number regestered keeps on going up and down the version running on the sup 720 is 12.2(33)SXI5 and the wism is installed in slot 9.

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Cisco Wireless :: WLC 4400 - AP Group Information

Aug 26, 2012

We have 4 x 4xxx WLCs setup in our Core. I just created an AP group in one of WLC and in theory I should see that AP group in the other 3 x WLCs
 
For some reason, I do not see that AP group appear in other 3 x  WLCs. Very much appreciated if someone could point me to the right information or trouble shooting steps.

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Sending Information From Laptop To Desktop Through Wireless Router

Jan 30, 2011

My desktop pc is currently wired into myowireless router and my laptop is fully wireless. How do I send data(pictures,music etc) from my laptop to my desktop & vice versa?

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Add Ip Information For Wireless System On Acer Laptop With Vista?

Dec 29, 2011

How do I add the ip information for a wireless system on a acer laptop with Vista.

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Cisco Wireless :: AP2600 Experience And Information Of Router

Nov 29, 2012

My site is thinking of using AP 2600 instead of the trusty AP 3502 since it has better thru put. Any experience on 2600 as we want to ensure stability for our deployment.

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Cisco Wireless :: Any Way To Get Information About Clients Connected To AP WAP200

Mar 16, 2013

is any way to get information about clients connected to an AP WAP200?

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Cisco Wireless :: WCS 7.0 - Monitor Clients Displaying Wrong Information?

Jan 30, 2011

I've been having some problems with the Monitor Clients menu on a WCS 7.0 server, for instance if I go there and display the detected clients on the last 24 hours I get a different set of clients than if I go and generate a report of unique clients for the last day on the report menu. Is this normal?, shouldn't both reports get the data from the same place and give the same result?.

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Cannot Get Dell Latitude D810 Wireless Setup To Work / No Gateway Information

Jan 22, 2012

We can not find the gateway on our Dell Latitude D810 we were able to locate the IP address and Subnet Mask however the Gateway info does not come up we have tried various times to connect to a hotspot no problem with our Dell Latitude D620 and the Function Key plus the F4 key does not bring up the wireless prompt.

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Linksys Wireless Router :: EA4500 Loses IPv4 And IPv6 Information?

Dec 21, 2012

No changes made but router will lose all information for IPv connectivity.  I have paid twice to support to fix this issue and it still occurs every few months. I tried rebooting router, and doing an IP Release/ Renew and router does not get IP address.

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Cisco Wireless :: 4.2 No Authorization Information Found For Remote Authenticated User

Apr 18, 2013

I've just installed NCS. When trying to configure NCS for ACS Tacacs+ authentication, I receive the message below when trying to login to NCS. ACS records my login in the 'passed authentications' log. I am using ACS 4.2."No authorization information found for Remote Authenticated User. Please check the correctness of the associated task(s) and Virtual Domain(s) in the remote server". I used the following link to configure ACS for NCS, url...

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Cisco Wireless :: 1130 Information For Guest Wi-Fi For Stand Alone Access Point

Feb 14, 2012

We have an Cisco Aironet 1130AG access point which is deployed as Stand Alone Access point, connected to Cisco 2960 Switch.Now we want to configure an Guest Wifi Access for  guest users , for accessing internet ,Is it possible to configure Guest wifi for stand alone access point,( Bcoz i created in WCS, i am not sure about stand alone), i read  in articles like create new vlan for Guest account & assign it like that , but not clear.

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Cisco Wireless :: Aironet 1041N Standalone Access Points Setup Information

Jul 19, 2012

I recently bought 6 airo net 1041N standalone access points for a customer of mine. It's an academy of barely 200 students. I'll be installing an access point in every room, to ensure better signal, since they use video for there classes. The reason why i decided to install an access point in every room is because the walls are armed concrete and they had a terrible experience with a past company in which they spend a lot of money for a antenna system that didn't work.These access points will be connected to a switch, which I have to buy also.Every student is going to bring there own laptops in order to connect to the network.

The reason why I'm writing is because I have a few questions to clarify.  
 
1) What is the best position for better signal, top side wall or corner ceiling?
 
2) How many client mac address filtering  can i do per access point?
 
3)I plan on doing ESSID but can I mac filter clients to a particular access point or should I mac address filter all permitted devices in all access points. The problem is that students come with iPods and phones and as you know on windows they will be able to see the wpa2 key and enter it on the particular UN-authorized device.

4) Any graphic user interface for configuring these access points or do i have to use Cisco IOS(kind of familiar with it)? (I'm used to GUI)

5)How can I configure these access points, through Ethernet browser or do I have to use console port cable?

6)Do I have to use POE injector or can I connect the access points directly to the switch with PoE and QoS?

7)I was planning on buying a small business switch sg100 d-8 but they recommended me that I should use the catalyst 2960 series, which would be best for handling video data? don't have to be much features, just QoS.

8) Can CCp software be used in these access points?

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Linksys Wireless Router :: RE1000 Wired PC Prompting User For Login Information For Wireles

Oct 30, 2012

I recently installed an RE1000, which seemed to be working fine. Then, on 3 PC's with no wireless adapter installed we began being prompted for user name and password for the wireless router. Once I unplugged to extender the problem went away. I know what you're thinking: Maybe I just think there's no wireless adapter on these PC's. NO, I looked in device manager and the only network adapter installed is the ethernet adapter. These are all 4+ year old machines with no hardware changes made to them. Wireless adapters are not necessarily standard issue on old towers--even on new towers. The Acer I'm using right now was purchased new in November 2011 and did not come with a wireless adapter installed.

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Difference Between Wireless Zero Configuration And Wireless Pan Dhcp?

Jun 14, 2012

What is the difference between wireless zero configuration and wireless PAN DHCP server?

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Cisco Wireless :: Difference Between IOS 12.4 And 15.2

Feb 12, 2013

What is the main difference between IOS 12.4 and 15.2? 

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Cisco Wireless :: Difference Between 802.11 A And 802.11g

Feb 26, 2012

Although I know the difference between 802.11 a and 802.11 g standard but just confused about this. When both the standards have been originated from OFDM and provides maximum Data rate of 54 Mbps. They have almost similar features and the only difference is of Frequency range they work on i.e. 5 Ghz and 2.4 Ghz respectivity.If they both have so many similarities then why there are 2 different standards - a and g. Just due to the frequency bands are different ?

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Switches :: Difference Between Wireless Routers?

Mar 13, 2013

Difference between wireless routers.

g
n
d

what is the difference between these router and which is best? i have the linksys wireless g 54 mbs.

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