High density wireless

hi all,
does cisco have a wireless solution for a high density, 1-2000user wireless enviroment? 802.11n in the 5ghz spectrum with the appropriate design obviously... but does cisco make an access point designed to handle several hundred associations?
thanks

i've successfully used the 1242aps, with a wlc4404... using both 802.11a, and 802.11b/g... though b/g can be miserable when the mass of laptops converge and step all over the 2.4GHz band. luckily about half the laptops that come in default to using 802.11a, and see no issues.
using these aps, i've found that allowing the wlc to dynamically adjust the power down to create smaller "cells" tends to help.. but there's no way around all the noise the large number of laptops create... at least in my experience.

Similar Messages

ASK THE EXPERTS : High Density Wireless Deployments and CleanAir Technology

with
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to get an update on High Density Wireless Deployments and CleanAir technology with Cisco expert Fred Niehaus. Fred is a technical marketing engineer for the Wireless Networking Business Unit at Cisco, where he is responsible for developing and marketing enterprise wireless solutions using Cisco wireless LAN products. In addition to his participation in major deployments, Fred has served as technical editor for several Cisco Press books including the "Cisco 802.11 Wireless Networking Reference Guide" and "The Business Case for Enterprise-Class Wireless LANs." Prior to joining Cisco with the acquisition of Aironet, Fred was a support engineer for Telxon Corporation, supporting some of the very first wireless implementations for major corporate customers. Fred has been in the data communications and networking industry for more than 20 years and holds a Radio Amateur (Ham) License "N8CPI."
Remember to use the rating system to let Fred know if you have received an adequate response.
Fred might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the shortly after the event. This event lasts through June 3, 2011. Visit this forum often to view responses to your questions and the questions of other community members.

You are correct, between the higher numbers of users with multiple devices the bandwidth requirements keep increasing.
The limitation of three non-overlapping channels in the 2.4 GHz space is driving more customers to 5 GHz, it is important to have both bands when high density deployments are needed. While many older devices only support 2.4 GHz, we are now seeing far more devices with 5 GHz as well.
The recomendation of 20-25 clients and 8 voice calls on a given 2.4 GHz channel is still a good "rule of thumb" with actual customer data requirements driving those numbers higher or lower. You are right when you say "throwing Access Points" at the problem can degrade the wireless quality as co-channel interference and overall noise floor can rise with multiple Access Points that can all hear each other.
A better approach to the problem is to throw more spectrum at this issue (using 5 GHz channels) and elements of 802.11n (20 MHz) bandwidth on 2.4 GHz.
What we have been doing in high density deployments is to try to minimize the propagation of a cell and focus it in a given direction. This can be done by
1. Managing the RF power of the radios (Access Points) and in some cases the client's power (using elements of CCX).
2. Using the right antennas to shape both Tx and Rx cell size to help isolate, we have recently introduced a new high gain antenna for stadiums that does this well.
3. Limit supported rates, obviously the higher the data rate the less sensitive the receiver is and the smaller the cell size becomes.
4. Enable 5 GHz (that adds far more channels for data throughput)
5. Limit the number of SSIDs in use as each requires a separate beacon (adding to RF utilization)
6. Co-locating access points with non-overlapping channels
There are some challenges, for example; many dual -band clients prefer to connect to 2.4 GHz, and 2.4 GHz is more likely to be busier and subject to interference, so we also enable Cisco "Band-Select" which basically "nudges" those clients off 2.4 GHz and pushes them to 5 GHz so as to free up the 2.4 GHz band when we can determine the client has 5 GHz capability.
So how is this done? well, we do this by listening to the clients and if we detect that the client is sending out probe requests on both bands we know the client can use 5 GHz so we essentially make the 5 GHz band "appear more attractive" to that client.
Note: Client load balancing and Band select are features in the Cisco Unified controller menu.
Also enabling client link (intelligent beam forming) helps direct the signal directly at the client and reduces same channel interference.

High density wireless deployment question

Hi,
I have read in some documents that we should have one Ap for more or less 50 clients.
But i also read for example in ap 2600 specs that it support maximum 200 connections per radio.
So for example in a conference room (10mx5meter) for 150 users in theory can i have just on Ap2600 for web surfing or i should have 3?
Best regards
MC

The max that you see on the data sheet does mean you can have x amount connected, but doesn't guarantee any throughout. The rule of thumb is 25 clients per AP. High density in a school is having like one AP per room that may hold up to around 30 students. Also including APs in the hallway, etc. Office areas can be the same. One AP per 25 or less users. Auditorium or large open areas are difficult to do high density like what I mentioned above because of the signal bleed in open areas. It's harder to control that. In these areas, you might look at the stadium APs and the stadium antennas.
Just remember, the amount of clients depend on the application that is being used on the wireless. If your doing video streaming, you may only have 8 devices connected before the user experience starts getting affected. Wireless is half duplex. So you take the max throughout on the 2.4ghz using. 802.11n and you divide that in half. So 144mbps is actual 73mbps throughout for one device. Now with two devices, you divide that again in half, so 36mbps for each and so one.
Hope this helps you understand.
Sent from Cisco Technical Support iPhone App

Wireless Site-Survey for High Density Environment

Hi,
I have done many Wireless SIte-Surveys in my career. But this will the first time, I am going to do a Site-Survey for High Density environment (School with Byod 1:1 design).
Currently, the school has a Wireless network in place. The current wireless design includes 3502 APs, 5508 WLC and Cisco Prime. The customer has issues with sufficient bandwidth in classrooms which limiting the students and teachers to access the learning content.
It is understood that there was no initial Site-Survey conducted, the AP positioning was made based on their knowledge.
Now, I am not sure as how to conduct the Survey here?
Do I need to conduct an Active Survey by connecting to the existing Wireless Network in the School? Or just passive Survey will be enough to determine the exact issues with the current design and provide the recommendations?
I have gone through the Cisco High Density design and white papers to start with.
Thanks,
CJ

Before you do the site survey, I'd do the initial breakdown of the LAN.
1. What kind of switch ports are we talking about?
2. Are the APs connected AND negotiated to 1 Gbps ports?
3. What is/are the switch uplinks? 100 Mbps, 1- or 10- Gbps, Etherchannel?
4. Line errors on the links between the AP and the switch, uplinks and the link between the WLC and the switches?
5. WLC link? How many are used? Are they LAG or not?
6. Configuration of the WLC must be checked.
Once you've checked these do I start talking about wireless:
1. What problems are the staff/students experiencing?
2. How many APs to a classroom? How big is the class?
3. Determine what kind of traffic are each class trying to push?
4. Where are the APs located in relations to the staff/student?
5. Verify co-channel interferrence. I know they have 3502 but I've seen people disable CleanAir.
6. Verify what kind of NIC cards are used and whether drivers have been updated or not.
I'm in the middle of improving our wireless coverage in >98 schools. This means I am now deploying 1 AP per classroom. In areas where the students/staff converge, I put additional APs (both indoors and outdoors).

Wireless high density - Cisco vs World

For wireless environments with high density of clients many manufacturers (Meru, Xirrus, Ruckus, Trapeze, ...) have developed equipment and capabilities optimized to provide good performance, these features are mainly based on the use of a single channel, or the use of smart antennas and arrays. In theory, these features are quite reasonable.
But Cisco is among the few manufacturers who think that with proper design (based on microcells) can obtain a better performance in dense environments, without necessary equipment or special features. I have had problems in high density environments with Cisco, but I could not prove in practice the solutions of other manufacturers.
Has anyone been able to compare both methods in the same environment? Cisco is right? What are the most important considerations to take into account in a high density environment with Cisco equipment?
Thanks

1. When the video calls was on-going, what radio was this being carried over?
802.11a,g and n
2. What is the model of your WLC?
Cisco WLC 5508 in HA AP SSO
3. What is the model of your AP?
73 Cisco AP 3600 and 17 AP Cisco AP 1552
4. What is the firmware of the WLC?
7.4.121.0
5. Did you check for co-channel interferrence?
Yes, exist co-chanenel inteferrence
6. What is the speed of the APs wired Ethernet link?
1GBEthernet
7. Did you check for speed/duplex issues of the wired Ethernet link?
There is no exist issues of speed/duplex
8. What is the LAN backbone speed from the switch up to the WLC?
1GBEthernet
9. When doing the video calls, how many clients were associated to this AP?
We have tested with one user, using video calls, downloading of 4GB, sharing files by wireless network, and the conectivity is too long
Thanks for your answer.

High density WLAN scenario

Hello,
Next week I'm facing a high density WLAN scenario, so I'm gathering info related to WLAN config advices, expected issues, etc. I've read Cisco WLAN High Density WLAN guide, but I'm still having questions about how my WLAN network will react to a high density scenario, i. e. auditorium with 800 seats. I'm planning 4-5 APs, maybe one in each corner and one in the middle.
My gear is Cisco WLC 5508 v7.4.100 with a mixture of 3600, 2600 and 1142 APs. I'm a bit doubtful about certain issues, related to high number of devices (specially iPhones and Android phones) trying to get connected to WLAN network. Regarding radio frequency planning, allow only high modulation levels, is there any other config I can set in order to force wireless clients to stop trying to associate to a certain AP? Is client-balancing setting working well with iPhone and Android phones?
My other concerns are about what info and graphics should I watch in real-time in Cisco Prime. Certanly, number of clients per Ap, but, anything else?If I get AP saturation, how should I react? Moving or adding APs? Rising modulation level?
Any advice will be greatly appreciated.
Kind regards,
Libera TAC team.

I disable 1,2,5.5,6,9 and 11 Mbps, 2 to 54 are supported, TPCv1 is enable, but I´m using fixed power because the WLC assigned low power and clients get low signal. Now I´m testing an area using 1-24 Mbps as disable and 36, 48 Mbps as supported and 54 Mbps as mandatory, do you think that with this set up will we be able to manage high power level?
Here, we have serveral clients into small areas, so we have lot of APs for the amount of clients.
(Cisco Controller) >show advanced 802.11b txpower
Leader Automatic Transmit Power Assignment
Transmit Power Assignment Mode................. AUTO
Transmit Power Update Interval................. 600 seconds
Transmit Power Threshold....................... -65 dBm
Transmit Power Neighbor Count.................. 3 APs
Min Transmit Power............................. -10 dBm
Max Transmit Power............................. 30 dBm
Transmit Power Update Contribution............. SNI..
Transmit Power Assignment Leader............... WLC.MARTI.CORPO (172.17.250.50)
Last Run....................................... 102 seconds ago
TPC Mode....................................... Version 1
TPCv2 Target RSSI.............................. -67 dBm
TPCv2 VoWLAN Guide RSSI........................ -67.0 dBm
TPCv2 SOP...................................... -85.0 dBm
TPCv2 Default Client Ant Gain..................   0.0 dBi
TPCv2 Path Loss Decay Factor...................   3.6
TPCv2 Search Intensity......................... 10 Iterations
AP Name                          Channel    TxPower       Allowed Power Levels
--More-- or (q)uit
AP.CORPO.P11.OESTE                6          3/8 (17 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P11.NORTE               *1         *7/8 ( 5 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P11.SUR                 *1         *7/8 ( 5 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P10.NORESTE              11         6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.NORESTE               1          7/7 ( 4 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P8.SURESTE               11         6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P7.NORTE                *1         *7/8 ( 5 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P10.SURESTE              6          6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P10.SUROESTE             11         5/8 (11 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.SUROESTE              1          5/7 (10 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P6.NORESTE               6          6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P7.OESTE                 11         6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.NOROESTE              11         5/8 (11 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P6.NOROESTE              1          5/7 (10 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P6.SURESTE               1          6/7 ( 7 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P6.SUROESTE              6          5/8 (11 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P12.SUROESTE             1          4/7 (13 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P12.NOROESTE             11         4/8 (14 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P12.SURESTE              11         6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.TERRAZA.SUR              6          6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P7.SUR                  *1         *7/7 ( 4 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P9.NORTE                *6         *7/7 ( 4 dBm) [22/19/16/13/10/7/4/4]
--More-- or (q)uit
AP.CORPO.P9.SUR                  *1         *6/8 ( 8 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P9.OESTE                 1          6/7 ( 7 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P12.NORESTE              1          6/7 ( 7 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.TERRAZA.NORTE           *11        *1/8 (23 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P1.NORTE                 11        *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P1.SUR                   1         *1/7 (22 dBm) [22/19/16/13/10/7/4/4]
AP.CORPO.P10.NOROESTE             6          5/8 (11 dBm) [23/20/17/14/11/8/5/2]
(Cisco Controller) >show advanced 802.11a txpower
Leader Automatic Transmit Power Assignment
Transmit Power Assignment Mode................. AUTO
Transmit Power Update Interval................. 600 seconds
Transmit Power Threshold....................... -70 dBm
Transmit Power Neighbor Count.................. 3 APs
Min Transmit Power............................. -10 dBm
Max Transmit Power............................. 30 dBm
Transmit Power Update Contribution............. SNI..
Transmit Power Assignment Leader............... WLC.MARTI.CORPO (172.17.250.50)
Last Run....................................... 223 seconds ago
TPC Mode....................................... Version 1
TPCv2 Target RSSI.............................. -67 dBm
TPCv2 VoWLAN Guide RSSI........................ -67.0 dBm
TPCv2 SOP...................................... -85.0 dBm
TPCv2 Default Client Ant Gain..................   0.0 dBi
TPCv2 Path Loss Decay Factor...................   3.6
TPCv2 Search Intensity......................... 10 Iterations
AP Name                          Channel    TxPower       Allowed Power Levels
--More-- or (q)uit
AP.CORPO.P11.OESTE               *40        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P11.NORTE               *36        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P11.SUR                 *40        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P10.NORESTE             *153       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.NORESTE              *161       *3/8 (17 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.SURESTE              *40        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P7.NORTE                *48        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P10.SURESTE             *36        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P10.SUROESTE            *149       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.SUROESTE             *36        *2/5 (11 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P6.NORESTE              *153       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P7.OESTE                *149       *3/8 (17 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P8.NOROESTE             *48        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P6.NOROESTE             *161       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P6.SURESTE              *36        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P6.SUROESTE             *40        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P12.SUROESTE            *36        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P12.NOROESTE            *48        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P12.SURESTE             *161       *3/8 (17 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.TERRAZA.SUR             *157       *1/8 (23 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P7.SUR                  *157       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P9.NORTE                *40        *2/5 (11 dBm) [14/11/8/5/2/2/2/2]
--More-- or (q)uit
AP.CORPO.P9.SUR                  *161       *4/8 (14 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P9.OESTE                *153       *2/8 (20 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P12.NORESTE             *36        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.TERRAZA.NORTE           *44        *1/8 (23 dBm) [23/20/17/14/11/8/5/2]
AP.CORPO.P1.NORTE                *44        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P1.SUR                  *64        *1/5 (14 dBm) [14/11/8/5/2/2/2/2]
AP.CORPO.P10.NOROESTE            *161       *1/8 (23 dBm) [23/20/17/14/11/8/5/2]

Outdoor High-Density/Mixed Environment Cisco AP/Antenna Choices for Data Coverage

We are looking to upgrade our non production use wireless network, which is for providing users typical internet data services. We don't have any wireless engineers on our team, we are primary wired networking guys. We are upgrading our wireless network, because we have a lot more user joining and our AP's in place have too high a client count which has diminsed throughput speeds for our customers. We have two seperate areas that provide this coverage, and both of them are under 1sq mile in size (one is 417,000 sq ft in size/280 estimate users and the other is 590,000 sq ft in size/700-800 users estimate). The environment is rugged (hot/humid/sandy), but flat. The users occupy pods/trailers/tents, so no structure is higher than 15ft.
Within the last year, more users are bringing in smart devices for data services, so our our network is a hybrid network now with a higher-density of users, and 802.11n AP's appear better equipped to handle this kind of load. We currently have a mixture of 1142AP's in side and 1252/1262 AP's outside place in NEMA enclosures, which are tied to two 3560/3750 PoE switches at each location. We don't have enough AP's in place to handle the additional client load to provide suitable data throughput speeds for typical internet data services, and are looking at possibly revamping the whole wireless network with different gear.
We are looking at possibly removing all previous AP's, and putting in place Cisco 1552e AP's (AIR-CAP1552E-A-K9) in both areas, using 3 Cisco dual antennas (AIR-ANT2547V-N) per AP's. We've seen an excel doc floating around on the web to help plan for how many AP's we might need, but the minimum area size for the excel spreasheet calculator is 1sq mile, which is a lot more than what we are looking at for each area. We've attempted to use the WCS in planning mode to map out how many 1552e AP's we need for each area (with our maps we created using Google Maps, and fairly accurate), and reviewed the heat signatures created and it appears the AP count is too high. We got around 20 AP's for one area and 33-35 AP's in the other area, which seems very high. We are looking at mounting the 1552e AP's to poles in each area at a height of around 12-15ft.
We don't know what the client load a 1552e AP can handle, for providing throughput speeds of 1.5Mbps to 5Mbps, to gauge how many AP's we really need, and whether going for using strictly 1552e AP's is the way too go. The 1552e AP's are geared for MESH networks, which is very different from what we have now. Can we set-up the 1552e AP's as stand alones? Do we have to use a different antenna for whatever AP is going to be the RAP? We are looking at using Power Injectors to provide power to the AP's.
Thanks in advance for any suggestions.

That setup is your best bet. What you have to look at is the number of hops. I would typically don't have more than two hops. That is map to map to rap. Remember that the 5ghz is your backhaul and you are basically daisy chaining your mesh. What you need is to make sure your 5ghz can link IP with a good backhaul speed. The 2.4ghz will of course cover more area so when you place these mesh AP's, make sure your backhaul has coverage to meet your backhaul requirements. Antennas will be the same for a map or rap. You will need a WLC to actually do mesh and it would be better that way. Even though you can get an autonomous version, it would be a dumb ap per say. Stick with mesh and a WLC and you should be fine.
Sent from Cisco Technical Support iPhone App

Whats the difference between high-density and low-density ram?

I bought what I thought was supposed to be a cheap 256 mb chip (pc100 or 133) but the g4 400 read only 128mb, The fellow in the store that sold it flipped out when I told him I had a Mac and said something about high density and low-density.Another guy in the store described it as being one sided and two sided.
I don't know what my machine needs. I got my money back but he would'nt let me exchange the chip for another, me thinking it was simply mislabeled.

The QuickSilvers use PC-133 SDRAM and are compatible with high-density memory chips (256 Megabit), so that 16-chip 512 MB and 8-chip 256 MB non-ECC DIMMs are supported. A low density, 16-chip (128 Megabit) 256 MB DIMM is also supported.

How to use a high power wireless-n usb adapter

I recently purchased a kinamax high power wireless-n USB 2.0 adapter to boost my wifi signal. The data range is 802.11n. The only problem is that I can't use the adaptor. The box says that the supported OS is MAC OS X. But when I connect the adapter nothing happens. There is not even sign that the USB adapter is connected. Can anyone help me?

Hi Kelvin,
I understand that you want to control pins on your serial port using LabVIEW. Since you are using Windows XP, only LabVIEW version 7.0 will be able to control the pins. The pins can be controlled by modifying the values of the access registers that windows associates with each pin. If you are using LabVIEW 7.0, then the VI's located on the Funtions >> Advanced >> Port I/O palette should help you assign values to the proper pins.
This information can also be found on another discussion forum thread located at the following url:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000438A0000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0
Thanks for contacting NI, and I hope this helps.
Marcus G.
National Instruments

Use of high density PC133 RAM in a G4

I am upgrading a G4 tower 867 MHz which uses PC133 SDRAM. The module I was looking at states "512MB 64X64 3.3VOLT SDRAM 7.5NS W/ EPROM UNBUFFERED PC133. THESE ARE HIGH DENSITY MODULES".
I cannot find anywhere the specs for the Mac other than:
* 128MB or 256MB of PC133 SDRAM
* Three DIMM slots supporting up to 1.5GB of PC133 SDRAM using the following1:
—128MB or 256MB DIMMs (64-bit-wide, 128-Mbit technology)
—512MB DIMMs (64-bit-wide, 256-Mbit technology)
Apparently, so machines run into problems running "high density" modules. How can I find out if this Mac G4 is compatible?

Hi-
Generally speaking, G4's have the best success with low to medium density DIMMs.
I have tried high density, before (because there was no real "info" on the subject), and the DIMMs weren't even recognized.
High density modules will have chips on one side of the board, while low will have chips on both sides of the board. The individual chips have larger capacity in high density. High density is usually sold for PC's.
Here in Japan, the HD memory is sold with optional "compatibility insurance" because there are often compatibility problems with high density DIMMs.
Check out memory at :
http://eshop.macsales.com/shop/apple/memory/
http://www.crucial.com/store/drammemory.aspx

Dreamweaver user interface controls appear small and hard-to-read on high-density displays.

I have 3840x2160, 24" display and many of the user interface controls are small, hard to read and in some cases are cut off.
I see this issue existed with Photoshop and Adobe introduced a "Introducing scale the UI 200% for high-density displays for Windows" under "Experimental Features"
Photoshop: Introducing scale the UI 200% for high-density displays for Windows
However I don't see this option available in Dreamweaver? Is there another work around?

ArtJonak wrote:
I have 3840x2160, 24" display and many of the user interface controls are small, hard to read and in some cases are cut off.
Wow, 4K resolution within a 24" space. You need a 200% increase in UI size just to work, I would think. Can you post a screenshot of the issue? I would like to see that. ;-)
With the changes the Dw team have made to the UI over the last few releases, and with the latest Workspaces, it almost feels like 720p is the main focus, or like the only Dw users that matter are on small Macbooks, with very limited screen real estate. I can still work on my laptop when I'm out of the office (17" at 1920x1080 on Windows 8.1), but the icons and controls are pretty small. Even with the added screen real estate, and the fact that the UI is still intact, I'd hate to have to use it for extended periods.
I voted as well.

I opened a high density .tiff file in photoshop but I cannot move the object

I opened a high density .tiff file in photoshop but I cannot move the object

Odds are the image is the same size as the document. You can either add canvas Image>Canvas Size... , use the crop tool and drag outwards to create more space, or reduce the size of the image ctrl-t or command-t then scale the image inward.

Replacing high density port switch/blade strategy

Hello,
I'm looking for strategies in replacing 48 port blades/switches while minimizing downtime. Our management wants to know how long it would take to replace a switch and re-cable it. So I'm trying to find some best practices on replacing switches/blades and how to maintain cable to port integrity when moving between switches/blades. The only thing I've really found comes from data center infrastructure, where they stress the importance of labelling cables.
I was wondering if anyone else had other strategies they use when replacing high density port switches/blades
Thanks in advance

patrickpaez wrote: Leo,Thanks for the response. What about places where your rack or chasis is full and you have to remove the exsisting chasis or blade inorder to add the replacement equipement?
Label, Label, Label.
I can't stress it enough, especially if you're trying to do a "mirror" replacement and have everything working exactly the same as it was before. Don't rely on memory, don't rely on out-of-date documentation - label every cable
If you're talking physical switches, then configure them FIRST to match your existing configuration (VLAN's, SVI's, Trunks etc etc), then label *every* cable plugged into your existing switch, pull the old one out, mount the new one, then put your cables back into place based on the labels.
If you're talking blades, the process is about the same except you *shouldn't* have to worry about configuring first - if you're doing a slot-for-slot replacement, the port designations should remain the same, and your existing config should just take effect on reboot.
If it's an additional module in an empty slot, just plug the module in, duplicate the configuration from the existing module, and move your cables one-by-one to matching ports on the new blade.
Cheers
Trap for new players in blade/modular environments - make DAMN sure the IOS version you're running actually supports the module you're installing - or you're going to end up in a mess!

When i take a call or dial a call in the high density traffic area or noicy area i can't hear properly so at that time i put my phone in the loud speaker mode.

when i take a call or dial a call in the high density traffic area or noicy area i can't hear properly so at that time i put my phone in the loud speaker mode.

I have had this happen to me on 3GS, 4 and 4s. Usually the solution is one of the following:
1- If your volume indicator says headphones even though they are not plugged in, then:
Stick your headphones into the headphone jack and then remove quickly.
2. If that does not work Power your phone off. Then when restarting Reset the phone by pressing the home button and the power button at the same time until the apple logo appears.
3. Make sure you have not chosen to send audio to an Airplay device such as Apple Tv.
Hope one of these works for you

1024Mb/1GB DDR 333 Pc2700 RAM - low or high density???

Can anyone give me the simple answer to my dilemma?
Does the mainboard in the MSI MEGA 180 support low density (64*8) or high density (128*4) 1GB Pc2700 333MHz DDR RAM chips?
Thanks.
J

Anyone know of a cheap LowDensity DDR RAM supplier? I can only find it at $125US - it must be available cheaper for a 1GB stick of PC2700 333MHz DDR RAM

High density wireless

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