Best AP/Radio config for high client/AP density?

[Eklund Kendt]

I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011
APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for some reason bulk AP radio configs are not sticking (I changed several of the ones listed below but looking at the current config they are not active). I did enable DCS in active mode and will be onsite to monitor today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure
Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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[Brian Anderson - ASI]

The first thing that jumps out at me, is the min basic rate. Usually I see that set to 1mbps.

Post by Eklund Kendt
I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011
APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Preamble: Long
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled
I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.
Thanks for any info!
Kendt Eklund
Executive Supervisor, Data Infrastructure
Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
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[Jeff Crawford]

Kendt-

We have a "strongly encouraged" (we are a public school district) BYOD program in grades 6-12 using 2 x C4110's running 8.11.11.0003, 3610 APs, and NAC.

To get the AP Multi-edit settings to stick you have to always set Admin Mode, Radio Mode, and Antenna Selection. I think there was some talk about changing this but I still have to set these three settings for my settings to stick. I am still on 8.11.11.003.

Do not leave ATPC Enabled and Auto Channel in Active Mode. You should set these once, let the APs figure everything out for an hour, then disable ATPC and set Dynamic Channel to Monitor. You do not want your APs switching channels and changing power settings all day long. This will drive clients crazy. I set my minimum transfer rate to 24Mbps. I have an AP in every "teaching space" and the clients should all connect at that rate and not decide to jump on some distant AP or not roam when a kid switches class.

Also, I only have Legacy, WMM, and 802.11e enabled in WLAN Services > VNS Name. I also have Flexible Client Access Enabled and set to Mostly Airtime.

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: 40MHZ
Guard Interval: Short
ATPC: Disabled
Max Tx Power: 24 dbm
Min Tx Power: 10 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 2
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Monitor Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 24Mbps
Max % of non-unicast traffic: n/a
Optimized for power save: n/a
Adaptable Rate: n/a
Multicast to Unicast delivery: n/a
Protection Mode: None
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Enabled
Aggregate MPDUs: Enabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: g/n
Channel Width: 20MHz
Guard Interval: Long
ATPC: Disabled
Max Tx Power: 24 dbm
Min Tx Power: 10 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Monitor Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 24 Mbps
Max % of non-unicast traffic: n/a
Optimized for power save: n/a
Adaptable Rate: n/a
Multicast to Unicast delivery: n/a
11b:
Preamble: n/a
11g:
Protection Mode: None
Protection Rate: n/a
Protection Type: CTS only
11n:
Protection Mode: None
Protection Type: CTS only
40Mhz Channel Busy Threshold: n/a
Aggregate MSDUs: Enabled
Aggregate MPDUs: Enabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled

I hope this helps,




Jeff Crawford
Manager of Networking and Security
East Grand Rapids Public Schools
2915 Hall St. SE
Grand Rapids, MI 49506-3111
616-235-3535
***@egrps.org>>>

I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011
APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for some reason bulk AP radio configs are not sticking (I changed several of the ones listed below but looking at the current config they are not active). I did enable DCS in active mode and will be onsite to monitor today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure
Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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[Patrick Printz]

I just looked and it seems that 6 MB/s is the lowest setting.

Patrick Printz
Network Infrastructure

Quinsigamond Community College
670 West Boylston Street
Worcester, MA 01606-2092
w. 508-854-7517
c. 508-726-9529


"If a man is called a street sweeper, he should sweep streets even as Michelangelo painted, or Beethoven composed music, or Shakespeare wrote poetry.  He should sweep streets so well that all the hosts of heaven and Earth will pause to say, Here lived a great street sweeper who did his job well."
~Martin Luther King, Jr.

-----Original Message-----
From: Brian Anderson - ASI [mailto:***@arcadiasecureit.com]
Sent: Monday, September 16, 2013 8:46 AM
To: Enterasys Customer Mailing List
Subject: Re: [enterasys] Best AP/Radio config for high client/AP density?

The first thing that jumps out at me, is the min basic rate. Usually I see that set to 1mbps.

Post by Eklund Kendt
I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011 APs - 3610 - 1 per
classroom Clients - MacAir OS X 10.8.4 (google search show other folks
having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode DCS Noise Threshold: -80 DCS
Disabled Protection Mode: Always Protection Type: CTS only 40Mhz
Disabled Aggregate MPDU Max Length: 65535 Agg. MPDU Max # of
Sub-frames: 64 ADDBA Support: Enabled
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode DCS Noise Threshold: -80 DCS
Disabled
Preamble: Long
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled
I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.
Thanks for any info!
Kendt Eklund
Executive Supervisor, Data Infrastructure Moore County Schools -
Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
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[Jeff Crawford]

I think this setting should be set based on your environment. I have APs in every "teaching space" like classrooms, gyms, offices, halls, etc.. When I had this setting to low I found clients did not always roam when a student switched classes or sometimes they would associate to horrible APs. I found that 24Mbps is the sweet spot for my environment.

Cheers,


Jeff Crawford
Manager of Networking and Security
East Grand Rapids Public Schools
2915 Hall St. SE
Grand Rapids, MI 49506-3111
616-235-3535
***@egrps.org>>>

The first thing that jumps out at me, is the min basic rate. Usually I see that set to 1mbps.

Post by Eklund Kendt
I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011
APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Preamble: Long
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled
I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.
Thanks for any info!
Kendt Eklund
Executive Supervisor, Data Infrastructure
Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
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[Daggett, John]

I will be following this thread because we have had user complaints of poor service too, even though the signal strength seems to be OK. We don't usually have your user/AP density though. For the most part we are 3620, with some 3710. The other difference is that we specify 40MHz channel-width on radio-1 (5GHz) and 20MHz width on the 2.4GHz band. Our theory is that allowing a wide channel-width on the congested 2.4GHz band may create interference and we are willing to live with the lower bandwidth there for 2.4GHz "n".

One thing that I have noticed in poking around is that the AP's seem to do a poor job of auto channel selection. While the primary channel (on the 40MHz wide radio-1) may be fine, in a significant number of cases the second "bonded" channel seems to have a problem (listed as "down" in the AP Inventory Report). When I manually locate a different primary channel that does successfully bond with its secondary, then everything seems fine, and these changes even "stick" between reboots.

Our other observation is that an AP reboot seems to at least temporarily clear our problems, although doing that regularly is a pain. It is not clear to me if the channel-bonding issue is really "the answer", and we are still groping around on this.

JD

-----Original Message-----
From: Eklund Kendt [mailto:***@mcs.k12.nc.us]
Sent: Monday, September 16, 2013 8:28 AM
To: Enterasys Customer Mailing List
Subject: [enterasys] Best AP/Radio config for high client/AP density?

I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011 APs - 3610 - 1 per classroom Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for some reason bulk AP radio configs are not sticking (I changed several of the ones listed below but looking at the current config they are not active). I did enable DCS in active mode and will be onsite to monitor today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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[Brodie Cownie]

I would be interested in what GTAC comes back with, if you wouldn't mind sending to the list. We are having the exact same issue with MAC users.

Brodie Cownie
Network Administrator
South Central College
507.389.7398

-----Original Message-----
From: Eklund Kendt [mailto:***@mcs.k12.nc.us]
Sent: Monday, September 16, 2013 7:28 AM
To: Enterasys Customer Mailing List
Subject: [enterasys] Best AP/Radio config for high client/AP density?

I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011 APs - 3610 - 1 per classroom Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for some reason bulk AP radio configs are not sticking (I changed several of the ones listed below but looking at the current config they are not active). I did enable DCS in active mode and will be onsite to monitor today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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[Yury Ostrovsky]

Ho Eklund,
Since most of your customers are using Mac OS , its a client with both A/n and G/N radio .
Try to do few things :
1. Use Radio Preference group ( under AP window there is Load group , create few groups - e.g one per floor let say) . It will push muximum number of people to use cleaner A/N
2. Disable DCS , or put it in monitor mode.
3. On 2.4 Radio choose G/N instead of B/G/N , unless you know of having B-only clients.
4. You can try to enable MPDU aggregation on both radios.

33 clients per AP is not a big number.

Regards
Yury

Post by Eklund Kendt
I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011
APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Preamble: Long
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled
I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.
Thanks for any info!
Kendt Eklund
Executive Supervisor, Data Infrastructure
Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
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[Jeff Crawford]

I have around 20 students that have 2013 MBA devices running 10.8.4. I have not seen a 2013 MBA device play nice on my 802.1x, PEAP, MS-CHAPv2 network. There are plenty of other MBA/MBP devices running 10.8.4 that do not exhibit the same behavior. There are a few reports on the Apple Discussion Forums.

Here is one of them:
https://discussions.apple.com/thread/5234129?start=0&tstart=0

I do not own a MBA and can not test 10.8.5. There is no mention of any 802.1x fixes in the release notes. I have encouraged my building techs to find a student that will let us update their device (and not hold us liable).

For now, we have recommended all of our 2013 MBA students use our captive portal SSID and stay away from our straight 802.1x SSID.

Jeff
I would be interested in what GTAC comes back with, if you wouldn't mind sending to the list. We are having the exact same issue with MAC users.

Brodie Cownie
Network Administrator
South Central College
507.389.7398

-----Original Message-----
From: Eklund Kendt [mailto:***@mcs.k12.nc.us]
Sent: Monday, September 16, 2013 7:28 AM
To: Enterasys Customer Mailing List
Subject: [enterasys] Best AP/Radio config for high client/AP density?

I have an open GTAC case and am waiting for the standard Enterasys recommendations, but I'm curious what others have seen in the real world. We have had reports of client connection issues at one school with a heavy Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011 APs - 3610 - 1 per classroom Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for some reason bulk AP radio configs are not sticking (I changed several of the ones listed below but looking at the current config they are not active). I did enable DCS in active mode and will be onsite to monitor today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list from the controller online help, but I don't want ot just randomly change settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure Moore County Schools - Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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To unsubscribe from enterasys, send email to ***@unc.edu with the body: unsubscribe enterasys ***@southcentral.edu

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[d***@fhsu.edu]

My 2013 MBA has occasionally had similar issue -- where 802.1x absolutely
will not connect after coming out of sleep, and a reboot will not fix it.
Even a single connection attempt makes the wifi adapter start acting wonky
(very scientific term). In that case, resetting the PRAM 4-5x in a row
does the trick and keeps it going through many sleep/wake transitions.

Derek Johnson | Data Communications Coordinator
FORT HAYS STATE UNIVERSITY
415 Lyman Dr. TH 101, Hays, KS 67601
(785) 628 - 5688 | ***@fhsu.edu





From: "Jeff Crawford" <***@egrps.org>
To: "Enterasys Customer Mailing List" <***@listserv.unc.edu>
Date: 09/16/2013 08:36 AM
Subject: RE:[enterasys] Best AP/Radio config for high client/AP
density?



I have around 20 students that have 2013 MBA devices running 10.8.4. I
have not seen a 2013 MBA device play nice on my 802.1x, PEAP, MS-CHAPv2
network. There are plenty of other MBA/MBP devices running 10.8.4 that do
not exhibit the same behavior. There are a few reports on the Apple
Discussion Forums.

Here is one of them:
https://discussions.apple.com/thread/5234129?start=0&tstart=0

I do not own a MBA and can not test 10.8.5. There is no mention of any
802.1x fixes in the release notes. I have encouraged my building techs to
find a student that will let us update their device (and not hold us
liable).

For now, we have recommended all of our 2013 MBA students use our captive
portal SSID and stay away from our straight 802.1x SSID.

Jeff
I would be interested in what GTAC comes back with, if you wouldn't mind
sending to the list. We are having the exact same issue with MAC users.

Brodie Cownie
Network Administrator
South Central College
507.389.7398

-----Original Message-----
From: Eklund Kendt [mailto:***@mcs.k12.nc.us]
Sent: Monday, September 16, 2013 7:28 AM
To: Enterasys Customer Mailing List
Subject: [enterasys] Best AP/Radio config for high client/AP density?

I have an open GTAC case and am waiting for the standard Enterasys
recommendations, but I'm curious what others have seen in the real world.
We have had reports of client connection issues at one school with a heavy
Mac deployment in a group of adjacent classrooms.
Controller - C5110-2 firmware 8.31.03.0011 APs - 3610 - 1 per classroom
Clients - MacAir OS X 10.8.4 (google search show other folks having WiFi
issues if there is heavy channel interference), 33 per classroom.
SSIDs - 2 deployed, one hidden, both using NAC/RADIUS for authentication
Topology is ***@AP for these authenticated clients

I've tried to push the config recommended from the help pages, but for
some reason bulk AP radio configs are not sticking (I changed several of
the ones listed below but looking at the current config they are not
active). I did enable DCS in active mode and will be onsite to monitor
today - current radio configs are:

Radio 1:
Admin Mode: On
Radio Mode: a/n
Channel Width: Auto
Guard Interval: Short
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: All Non-DFS-Channels
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 6Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Enabled


Radio 2:
Admin Mode: On
Radio Mode: b/g/n
Channel Width: Auto
Guard Interval: Long
ATPC: Enabled
Max Tx Power: 24 dbm
Min Tx Power: 8 dbm
Auto Tx Power Ctrl Adj: 0 dbm
Channel Plan: 3-Channel Plan
Ant Selection: L/M/R
Advanced:
DTIM Period: 5
Beacon Period: 100
RTS/CTS Threshold: 2346
Frag. Threshold: 2346
Maximum Distance: 100
Dynamic Channel Selection: Active Mode
DCS Noise Threshold: -80
DCS Channel Occupancy Threshold: 100
DCS Update Period: 5
Min Basic Rate: 11 Mbps
Max % of non-unicast traffic: 100
Optimized for power save: unchecked
Adaptable Rate: unchecked
Multicast to Unicast delivery: Disabled
11b:
Preamble: Long
11g:
Protection Mode: Auto
Protection Rate: 11 Mbps
Protection Type: CTS only
11n:
Protection Mode: Always
Protection Type: CTS only
40Mhz Channel Busy Threshold: 50
Aggregate MSDUs: Disabled
Aggregate MPDUs: Disabled
Aggregate MPDU Max Length: 65535
Agg. MPDU Max # of Sub-frames: 64
ADDBA Support: Disabled

I could go back and set them based on the 'High Throughput' settings list
from the controller online help, but I don't want ot just randomly change
settings without further logging or the recommendations from GTAC.

Thanks for any info!


Kendt Eklund
Executive Supervisor, Data Infrastructure Moore County Schools -
Technology
180 Pinckney Rd. - Carthage, NC 28327
910-947-6672 Fax: [phone]
Email: ***@ncmcs.org






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body: unsubscribe enterasys ***@southcentral.edu

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