I wanted to ask about what channels I can use from the UNNI 2 extended band in Australia. I am referring to and quoting from the document;
Cisco 5760 IOS Wireless LAN Controller Configuration Best Practices September 2014
Quoting from that document;
“Dynamic Frequency Selection (DFS)
Dynamic Frequency Selection was created to increase the availability of more channels in the 5 GHz spectrum. Depending on regulatory domain this can mean from 4 to 12 additional channels.”
Am I right that the terms dca and DFS are referring to the same thing?
As in the document the “show ap dot11 5ghz channel” command on my 5760 controller output shows
WLC#show ap dot11 5ghz channel
Automatic Channel Assignment
Channel Assignment Mode : AUTO
Channel Update Interval : 600 seconds
Anchor time (Hour of the day) : 0
Channel Update Contribution : SNI..
Channel Assignment Leader : BT-BC-2-4-WLC (10.208.224.10)
Last Run : 407 seconds ago
DCA Sensitivity Level : MEDIUM (15 dB)
DCA 802.11n/ac Channel Width : 80 MHz
Channel Energy Levels
Minimum : -95
Average : -73
Maximum : -50
Channel Dwell Times
Minimum : 4 hours 37 minutes 46 seconds
Average : 26 days 23 hours 9 minutes 26 seconds
Maximum : 53 days 1 hour 50 minutes 3 seconds
802.11a 5 GHz Auto-RF Channel List
Allowed Channel List : 36,40,44,48,52,56,60,64,149,153,157,161
Unused Channel List : 100,104,108,112,116,120,124,128,132,136,140,165
802.11a 4.9 GHz Auto-RF Channel List
Allowed Channel List :
Unused Channel List :
So if I understand then this means DFS is enabled on the “Allowed Channel List”?
The document goes on to say;
“Enable the U-NII-2e channels for more channels in your regulatory domain using this command: WLC5760(config)#ap dot11 5ghz rrm channel dcl add <channel>
Available channels in North America and Europe are 100 - 140 (8 additional channels). Channels 120, 124, and 128 are disabled in the US, and severely penalized in ETSI DFS rules and are not supported.”
I am in Australia so can you tell me the permitted channels in my regulatory domain that I can add to the allowed channel list?
Would the addition of more available channels for dynamic selection mostly be useful for improving high density deployments by reducing co-channel interference?
... View more
Hi, Like Courtney I went looking for the same feature and was suprised I couldn't find it. The sooner you can get this in the better please. Regards, Stephen Polzin Solutions Architect CCIE 4994
... View more
Hi Nael, Thanks for the reply. I ask about the 2500 as was under the impression from a Cisco SE that the 2500 is aimed as.a replacement for the 4400 which is currently the best price point to split as an anchor. Are there any plans to discontinue the 4400 series as that would leave the only choice for an anchor to be the 5508? Regarding the WCS map editor I have never tried to import a DXF file but koesn't WCS just convert that to a flat graphics file format like png/jpg/gif? I am looking for a better way to draw and place attenuating objects like walls, etc. so if that's the case unfortunately that doesn't help. Another thing that would be a nice to have in the planning tool would be the ability to do RF prediction for APs with internal antennas mounted high up on the wall at 90 degrees such as in a warehouse with high ceilings which is a recommendation from Cisco which can be found in the antenna guide documents as an alternative to external patch or yaagi antennas. Do you now of any plans to introduce this functionality? Finally could you tell me what is the best way and to who I can put forward enhancement requests to the WCS product such as those discussed? Thanks, Steve
... View more
Hi Nael, A couple of questions please; 1. Can the 2500 WLC operate as an anchor controller? If yes then how many EOIP tunnels will it support? 2. I have used the WCS planning tool a lot and found it to provide a good rule of thumb for a first look at how many WAPs to deploy and where but I must say the editor is frustrating at best. Drawing obstacles is tedious and time consuming and then if you subsequently scale the map they are all moved and you basically have to start over. Are there any plans to integrate with a better editor or perhaps an external vector graphics editor such as Visio? Thanks, Steve.
... View more