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- About thefranmanatt
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Member since
12-31-2010
126
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Created by
thefranmanatt
in Wireless and Mobility
in Wireless and Mobility
07-09-2013
06:25 AM
07-09-2013
06:25 AM
If you can sniff the traffic you may want to look at the "QBSS" to see change utilization. Also you can check the beacon to make sure they are getting spit out even 102.4ms. The AP has to content to send it out, so if it the medium is busy you'll see delayed beacons. Though after so many delayed beacons will give itself better chances to access the medium (I forget the details) Disable load balancing and band select. those are hacks. In CPI you can run channel utilization reports. This will help you see airtime use In 7.2 they added a way to limit users per radio. I'd set the 2.4GHz fairly low. This will help move dual band client over to 5GHz. It does run the risk of 2.4GHz users not getting access. In 7.4 you can enable AVC and watch traffic patterns. Give proiaty to the important class stuff and BE the unimportant stuff like facebook etc. You may want to set up two SSIDs, a fast and a slow. Make the fast SSID 5GHz only. Users that can see it join it instead of getting on the 2.4 radios. Also I'd make the 5GHz 40MHz, this will allow clients that support it use less airtime. Make sure you select your 5GHz channels to match a large % of what you clients support. If only 10% of your clients support unii-2 extended... well don't enable those channels. CCNP - Wireless CWNA and CWAP
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Created by
thefranmanatt
in Wireless and Mobility
in Wireless and Mobility
07-08-2013
06:36 PM
07-08-2013
06:36 PM
are you able to sniff traffic? You may free up some air time disabling those probe suppressing hacks. Do you have a WCS/NCS/CPI? What code are you running? Read over that HD guide George posted. It is a good. Aruba and Aerohive have HD guides worth reviewing also. FYI, 10-20 seconds after the screen goes black on iphones/ipads they pretty much shut down the wifi. When they are on you would real want them connected so they aren' probing EVERY channel (even the off ones like 2,3,4,5,7,8,9,10), this really slows down their probing. Ever AP that hears the probe replies, If you have 6 aps on channel 1 and they hear the probe they'll all reply. The newer ios version probe at 6mbps. Kills off the lower rates like 6,9,12, and maybe 18. Add more 5GHz only APs. CCNP - Wireless CWNA and CWAP
... View more
Created by
thefranmanatt
in Wireless and Mobility
in Wireless and Mobility
07-08-2013
02:06 PM
07-08-2013
02:06 PM
Why do you want to change this? What is the end goal? Any multicast action going on? CCNP - Wireless CWNA and CWAP
... View more
Cisco Prime Infrastructure error while ...
in Wireless Security and Network Management
07-04-2013
05:30 PM
07-04-2013
05:30 PM
Very good info. I have added this problem to my complaint list for the PI/NCS product line. A small install of this for a lab environment should be available. I wanted to make some training docs on basic setup, adding devices, "getting around", etc... for my company training. No such luck with out getting a real server or appliance, which isn't the easiest of things to do. Luckly I can but I feel sorry for everyone else without access to gear as I do. How does someone new to this field learn/train? CCNP - Wireless CWNA and CWAP
... View more
Created by
thefranmanatt
in Wireless and Mobility
in Wireless and Mobility
07-02-2013
07:13 PM
07-02-2013
07:13 PM
try a different web browser. CCNP - Wireless CWNA and CWAP
... View more
Suggestion to conduct a Site-Survey
in Wireless and Mobility
07-02-2013
07:11 PM
07-02-2013
07:11 PM
You can shave off some of the lower data rates so that they can't connect well unless they have good signal. Having to burn inside the building should cause issues with good signal. Well.. at least if they aren't right up front in the window. CCNP - Wireless CWNA and CWAP
... View more
Created by
thefranmanatt
in Wireless and Mobility
in Wireless and Mobility
07-02-2013
06:59 PM
07-02-2013
06:59 PM
This process was a pita for me. Unless you can join it to a controller the archive download-sw command didn't work because the AP keep reDHCPing in the middle of the download. If you can run the command while it is joined to a controller that is the best. If not you may need to do it the hard way https://supportforums.cisco.com/docs/DOC-14636 Long read on my issues with this process. https://supportforums.cisco.com/message/3829516#3829516 CCNP - Wireless CWNA and CWAP
... View more
Created by
thefranmanatt
in Wireless - Mobility Documents
in Wireless - Mobility Documents
07-01-2013
09:28 AM
07-01-2013
09:28 AM
http://www.youtube.com/watch?v=rWKpF7TyB5Q ****READ***** This video is way too long.... If you just want the configs they are below ============= hostname 5760 ! boot-start-marker boot-end-marker ! ! ! ! ########Username username testing privilege 15 secret testing vlan 10 name management vlan 50 name client ! ! interface Port-channel1 switchport mode trunk ! ! interface TenGigabitEthernet1/0/1 switchport mode trunk channel-group 1 mode active ! interface TenGigabitEthernet1/0/2 switchport mode trunk channel-group 1 mode active ! interface Vlan1 no ip address shutdown ! interface Vlan10 description Management Interface ip address 10.10.0.2 255.255.255.0 ! ip default-gateway 10.10.0.1 no ip http server ip http authentication local ip http secure-server ! ! ! ip sla enable reaction-alerts ! ! ! line con 0 logging synchronous ! line vty 0 4 logging synchronous login local line vty 5 15 logging synchronous login local ! ####### This set switch as an MC#### wireless mobility controller ! ####### This sets the interface the APs will talk to##### wireless management interface Vlan10 ! ####### Enables management over wifi######## wireless mgmt-via-wireless ! ####### WLAN config ####### wlan testing1234 1 testing1234 client vlan 50 no security wpa akm dot1x security wpa akm psk set-key ascii 0 testing1234 no shutdown end ============= ! hostname 3560-8 ! vlan 10 name management vlan 50 name client ########Username username testing privilege 15 secret testing ######### DHCP for APs, no option 43 needed because they are on the same subnet as WLC###### ip dhcp pool APs network 10.10.0.0 255.255.255.0 default-router 10.10.0.1 dns-server 10.10.0.1 ! ######### DHCP for wireless clients, remove if you already have DHCP server###### ip dhcp pool Clients network 10.50.0.0 255.255.255.0 default-router 10.50.0.1 dns-server 10.50.0.1 ! ! ! interface GigabitEthernet0/7 des CAPWAP AP switchport access vlan 10 switchport mode access ! interface GigabitEthernet0/8 des CAPWAP AP switchport access vlan 10 switchport mode access ! ! interface Vlan1 no ip address ! interface Vlan10 ip address 10.10.0.1 255.255.255.0 ! interface Vlan50 description Management Interface ip address 10.50.0.1 255.255.255.0 ! ! ! line con 0 logging synchronous line vty 0 4 logging synchronous login local line vty 5 15 logging synchronous login local ! end ==========================
... View more
Labels:
Created by
thefranmanatt
in Wireless - Mobility Documents
in Wireless - Mobility Documents
06-30-2013
01:54 PM
06-30-2013
01:54 PM
http://www.youtube.com/watch?v=eHOQe56QBpA This video ended up being a lot longer than I thought it would. Below should be a config you can just paste in to a 3850 then reboot it and it should come up as a configured controller. ! hostname 3850 ! boot-start-marker boot-end-marker ! ! ! ! ########Username username testing privilege 15 secret testing no aaa new-model switch 1 provision ws-c3850-24p ! ip device tracking ! ######### DHCP for APs, no option 43 needed because they are on the same subnet as WLC###### ip dhcp pool APs network 10.10.0.0 255.255.255.0 default-router 10.10.0.1 dns-server 10.10.0.1 ! ######### DHCP for wireless clients, removed if you already have DHCP server###### ip dhcp pool Clients network 10.50.0.0 255.255.255.0 default-router 10.50.0.1 dns-server 10.50.0.1 ! ! ! interface GigabitEthernet1/0/1 description CAPWAP AP switchport access vlan 10 switchport mode access ! ! interface Vlan1 no ip address shutdown ! interface Vlan10 description Management Interface ip address 10.10.0.2 255.255.255.0 ! interface Vlan50 description Management Interface ip address 10.50.0.1 255.255.255.0 ! ip default-gateway 10.10.0.1 no ip http server ip http authentication local ip http secure-server ! ! ! ip sla enable reaction-alerts ! ! ! line con 0 logging synchronous ! line vty 0 4 logging synchronous login local line vty 5 15 logging synchronous login local ! ####### This set switch as an MC#### wireless mobility controller ! ####### This sets the interface the APs will talk to##### wireless management interface Vlan10 ! ####### Enables management over wifi######## wireless mgmt-via-wireless ! ####### WLAN config ####### wlan testing1234 1 testing1234 client vlan 50 no security wpa akm dot1x security wpa akm psk set-key ascii 0 testing1234 no shutdown end
... View more
Labels:
06-16-2013
11:25 AM
There is a tweaked 7.2 version floating around that AS has with some of the knobs I was talking about. However in 7.5 look under the HD tab on an RF profile. The idea is you can tweak your mutlicast for different areas using the RF profiles. This comes in to play a lot at stadiums where you may want different rates for different seating sections. Of course you can use them anywhere you don't want global setting applied. Cisco has changed the multicast on their controllers to be real multicast, not multicast to unicast (maybe why it is sent at the highest data rate, because it is really unicast?). Look up Cisco StadiumVision Mobile. If you have any questions let me know and I'll get you some answers. I have some engineering contacts on the SVM team. CCNP - Wireless CWNA and CWAP
... View more
06-15-2013
12:58 PM
Access points running recent Cisco IOS versions transmit multicast frames at the highest configured basic rate and management frames at the lowest basic mandatory rates, can cause reliability problems. Access points running LWAPP or autonomous Cisco IOS should transmit multicast and management frames at the lowest configured basic rate. Such behavior is necessary to provide good coverage at the cell's edge, especially for unacknowledged multicast transmissions where multicast wireless transmissions might fail to be received. Because multicast frames are not retransmitted at the MAC layer, clients at the edge of the cell might fail to receive them successfully. If reliable reception is a goal, multicast frames should be transmitted at a low data rate. If support for high data rate multicast frames is required, it might be useful to shrink the cell size and disable all lower data rates. Depending on your requirements, you can take the following actions: If you need to transmit multicast data with the greatest reliability and if there is no need for great multicast bandwidth, then configure a single basic rate, that is low enough to reach the edges of the wireless cells. If you need to transmit multicast data at a certain data rate in order to achieve a certain throughput, you can configure that rate as the highest basic rate. You can also set a lower basic rate for coverage of nonmulticast clients. http://www.cisco.com/en/US/docs/wireless/controller/7.4/configuration/guides/system_management/config_system_management_chapter_01011.html CCNP - Wireless CWNA and CWAP
... View more
06-15-2013
09:00 AM
You have to becareful trying short power on the ap too much. The clients dont lower their power. Normally they are blasting out probes at 1mbps through their omni antenna. If you chop the ap cells too much your clients will still form a super cell of sharing airtime goodness, cii. *sigh* all problems that go away in 5GHz. Though most of the byod devices are pretty weak Sent from Cisco Technical Support Android App
... View more
06-15-2013
08:47 AM
I have not heard controllers send at the highest man rate. Got a link to the supporting info? Newer code let's you select your multicast rate btw. Sent from Cisco Technical Support Android App
... View more
06-15-2013
07:43 AM
George, a lot of it comes from the CWAP. Of course contention plays a large part of my day job so I pay special attention to it where ever I see it posted.. CCNP - Wireless CWNA and CWAP
... View more
06-15-2013
07:40 AM
The screenshot was an uncapped network. I would not recommend that many users per radio. I cap the radios at 50 users. At that location you couldn't add anymore 2.4 but you could have added a bunch more 5, if they had the funds anyways. Are you talking about the new multicast or the old multicast to unicast? Cisco's SVM should make it a lot easier for you. CCNP - Wireless CWNA and CWAP
... View more
07-09-2013
If you can sniff the traffic you may want to look at the "QBSS" to see
change utilization. Also you ...
07-08-2013
are you able to sniff traffic? You may free up some air time disabling
those probe suppressing hacks...
07-08-2013
Why do you want to change this? What is the end goal? Any multicast
action going on?CCNP - Wireless ...
Created by
thefranmanatt
in Wireless Security and Network Management
07-04-2013
07-04-2013
Very good info. I have added this problem to my complaint list for the
PI/NCS product line. A small ...
07-02-2013
You can shave off some of the lower data rates so that they can't
connect well unless they have good...
Created by
thefranmanatt
in Wireless and Mobility
07-02-2013
07-02-2013
This process was a pita for me. Unless you can join it to a controller
the archive download-sw comma...
Created by
thefranmanatt
in Wireless - Mobility Documents
07-01-2013
07-01-2013
http://www.youtube.com/watch?v=rWKpF7TyB5Q****READ*****This video is way
too long.... If you just wa...
Created by
thefranmanatt
in Wireless - Mobility Documents
06-30-2013
06-30-2013
http://www.youtube.com/watch?v=eHOQe56QBpAThis video ended up being a
lot longer than I thought it w...
06-16-2013
There is a tweaked 7.2 version floating around that AS has with some of
the knobs I was talking abou...
06-15-2013
Access points running recent Cisco IOS versions transmit multicast
frames at the highest configured ...
06-15-2013
You have to becareful trying short power on the ap too much. The clients
dont lower their power. Nor...
06-15-2013
I have not heard controllers send at the highest man rate. Got a link to
the supporting info?Newer c...
06-15-2013
George, a lot of it comes from the CWAP. Of course contention plays a
large part of my day job so I ...
Public Statistics
| Date Registered | 12-31-2010 08:44 AM |
| Date Last Visited | 12-06-2018 03:15 PM |
| Total Messages Posted | 126 |
| Total Helpful Votes Received | 30 |
Helpful Votes Given To
| User | Helpful Count |
|---|---|
| 5 | |
| 5 | |
| 5 | |
| 10 | |
| 3 |
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