dennischolmes

Member Since: Aug 09, 2007

English
dennischolmes commented on High Channel utilization but no RX or TX utilisation in Getting Started with Wireless 3 months ago

Hey Victor, Remember that high channel utilization can come from a lot of different places. Client...

dennischolmes commented on Radio Policy 802.11g only vs 802.11b/g only in Getting Started with Wireless 11 months ago

Hey George, Just ran into something strange here. I have SSID set to G only. I have 1,2,5.5, and 11...

dennischolmes commented on iPad / iPhone SSID change issue in Getting Started with Wireless 4 years ago

It is disabled by default to meet FIPS and other compliance standard requirements. It's meant to...

dennischolmes commented on Wireless Mesh Networks - AIR-BAND-INST-TL= in Other Wireless - Mobility Subjects 4 years ago

This is the band tool used to install the banded mount for the AP to a pole. As stated above you...

dennischolmes commented on client not getting ip in Getting Started with Wireless 5 years ago

Stephen is correct here. Disabling dhcp by proxy will not adversely affect your other networks.

dennischolmes commented on WLC 4402 and AIR-LAP1142N-E-K9 Radio0 not present/present in Getting Started with Wireless 5 years ago

RMA the AP as there was a bad batch of radios that were released from manufacturing last couple of...

dennischolmes commented on NFR Conditions for UWN in Security and Network Management 5 years ago

Contact Jim Galvez at Cisco for the newest licensing guidelines for our NFR gear.

dennischolmes commented on newby questions in Getting Started with Wireless 5 years ago

SO from a purely RF coverage standpoint yes you could do that with the antennae. Is it the correct...

dennischolmes commented on Two AP - Channel Auto or manual to 6 and 11 is better in Getting Started with Wireless 5 years ago

The antenna reference guide is an excellent primer for the novice RF engineer wanting to learn such...

dennischolmes commented on WCS reports AP draws low power - with correct power injector! in Other Wireless - Mobility Subjects 5 years ago

Try disabling CDP on the switch port that the injector is installed in. This sometimes fixes a...

dennischolmes commented on WCS and Windows 2008 in Getting Started with Wireless 5 years ago

Prime NCS comes in two flavors. Virtual Machine Image for 1995.00 US list price or on an appliance...

dennischolmes commented on Wireless Mesh/Backhaul question. in Getting Started with Wireless 5 years ago

22mb is the supported data rate I think. Why not look at the Cisco ExtendAir radio. It is 5ghz non...

dennischolmes commented on calling on wireless interference experts :) in Getting Started with Wireless 5 years ago

  I am not familiar with this tool really as our regular field engineers use Cisco Spectrum Expert...

dennischolmes commented on Two AP - Channel Auto or manual to 6 and 11 is better in Getting Started with Wireless 5 years ago

Channel 1 is on a slightly lower frequency than channel 11 and from a purely RF standard virtually...

dennischolmes commented on Two AP - Channel Auto or manual to 6 and 11 is better in Getting Started with Wireless 5 years ago

Good RF practice is channels 1 and 11. THe reason for this is that most consumer grade APs (...

dennischolmes commented on Cisco 1142N Radio interface gone in Getting Started with Wireless 5 years ago

The test environment rules out the power as being the problem. I would suggest opening a warranty...

dennischolmes commented on Wireless Mesh deployment in Other Wireless - Mobility Subjects 5 years ago

Josem,You can do this without WCS but I will suggest that you use WCS for a couple of major...

dennischolmes commented on WCS reports AP draws low power - with correct power injector! in Other Wireless - Mobility Subjects 5 years ago

Dig straight into the controllers and look at the details on the APs. Look for injector state....

dennischolmes commented on No Join request going out in Other Wireless - Mobility Subjects 5 years ago

Your first mistake is using any version of 5x code. This was the most bug ridden version of code...

dennischolmes commented on WLC can't ping MSE in Other Wireless - Mobility Subjects 5 years ago

What version of code is on each. There are some code mismatch issues around 6.0 to 7.0 code...

dennischolmes commented on Resiliance if controller drops? in Other Wireless - Mobility Subjects 5 years ago

The absolute best way to acheive this is to put a small controller at each location and the...

dennischolmes commented on newby questions in Getting Started with Wireless 5 years ago

One more major issue to remember around iPads. If they connect to your production network you will...

dennischolmes commented on Problems with LAP-1142n booting in Getting Started with Wireless 5 years ago

Have the cable vendor check wiring scheme and repunch down the cables at each end. This is almost...

dennischolmes commented on Cisco 1142N Radio interface gone in Getting Started with Wireless 5 years ago

Hey Leo,Exactly what I think he should do. Although it probably is a bad radio in the slot, I have...

dennischolmes commented on Cisco Prime NCS + Location Tracking in Getting Started with Wireless 5 years ago

NCS is WCS on steroids. I would only be concerned with bugs at this point on the new code. NCS by...

dennischolmes commented on calling on wireless interference experts :) in Getting Started with Wireless 5 years ago

The source you are seeing on channel 11 is an AP from the looks of things. It could be the actual...

dennischolmes commented on WAPs are not retaining WLAN id when rebooted. in Other Wireless - Mobility Subjects 5 years ago

Try creating a mobility group and adding both controllers. I suspect you might be having a problem...

dennischolmes commented on 4402 anchor in DMZ, how to configure the Firewall in Other Wireless - Mobility Subjects 5 years ago

Have you tried trunking the port? Have you gotten the controllers talking to each other?See this...

dennischolmes commented on WCS Version 7.0.164.0 won't start in Security and Network Management 5 years ago

Make sure you always have available memory and disk resources. There is a minimum systems...

dennischolmes commented on Extending Coverage with Aironet 1130AGs in Getting Started with Wireless 6 years ago

You could use the 1130 as a repeater or meshed via the 5ghz radio but you would lose 1/2 half of...

dennischolmes commented on Handheld WiFi Devices Timeout Problem in Other Wireless - Mobility Subjects 6 years ago

I use that same timeout setting for a distribution center and here is why. Computers on wheels...

dennischolmes commented on WLC 5508 problem join AP in Other Wireless - Mobility Subjects 6 years ago

Could you please award points and mark your problem as resolved.

dennischolmes commented on Extending Coverage with Aironet 1130AGs in Getting Started with Wireless 6 years ago

Without WDS they could roam between access points as long as no security or encryption is used. If...

dennischolmes commented on Extending Coverage with Aironet 1130AGs in Getting Started with Wireless 6 years ago

Although this would allow for basic connectivity it would not allow for fast roaming between the...

dennischolmes commented on SNR, RSSI, EIRP and Free Space Path Loss in Getting Started with Wireless 6 years ago

Excellent information for the beginning RF professional. I would like to add the free space path...

dennischolmes commented on Only 47 APs join to WLC-4402-50 in Other Wireless - Mobility Subjects 6 years ago

The limit Stephen is discussing was put into place to eliminate over subscription of a single sfp...

dennischolmes commented on Handheld WiFi Devices Timeout Problem in Other Wireless - Mobility Subjects 6 years ago

Stephen is correct here. This is a problem with the client not polling on occasion to the...

dennischolmes commented on WLC 5508 problem join AP in Other Wireless - Mobility Subjects 6 years ago

Likely that this is a LWAPP coded AP with a statement in the startup config of "cisco-lwapp-...

dennischolmes commented on WLC 2106 Only One user Authentication issue in Other Wireless - Mobility Subjects 6 years ago

It is a security problem with Cat 520 guys. I use the same switch here and access is controlled by...

dennischolmes commented on Outdoor Coverage in Getting Started with Wireless 6 years ago

So, what Leo is basically saying here is that when going through a wall you lose signal. How much...

dennischolmes commented on Outdoor Coverage in Getting Started with Wireless 6 years ago

Leo makes some good suggestions from the Cisco portfolio but I would call Tessco and some third...

dennischolmes commented on Outdoor Coverage in Getting Started with Wireless 6 years ago

You can use the 1252 as an outdoor AP for 11n but Cisco suggests the use of the 1500 series MESH...

dennischolmes commented on Cisco Aironet 1131ag - single SSID w/ multiple APs in Getting Started with Wireless 6 years ago

If you want good seemless roaming and these APs are autonomous, you need to set up WDS to allow for...

dennischolmes commented on Disabling 802.11a support on 802.11n APs in Security and Network Management 6 years ago

Which client devices are you using? I know Intel, but which chipset? The 1x1's dont support channel...

dennischolmes commented on Server requirements for Wireless Control System (WCS) installation in Security and Network Management 6 years ago

There is none. 500 series controllers are managed by the Cisco Network Configuration tool. This is...

dennischolmes commented on Problems with 802.1x and Atheros cards in Security and Network Management 6 years ago

I thought this would be a fix for you guys. Let me know if you have any continued problems. 6.0.196...

dennischolmes commented on Problems with 802.1x and Atheros cards in Security and Network Management 6 years ago

OK guys. Bump up to 6.0.196 and let me know if you still have the problems. I am hearing that there...

dennischolmes commented on Problems with 802.1x and Atheros cards in Security and Network Management 6 years ago

What version of WLC code are you running? Im betting 6.0.188?

dennischolmes commented on Using channels other than 1, 6 and 11 in Other Wireless - Mobility Subjects 6 years ago

Now for my 2 cents worth as well. The effect of adjacent channel interferencein an already...

dennischolmes commented on Default username for WCS database in Security and Network Management 6 years ago

I havent checked lately but I think it is root and public.

Bio

Dennis Holmes is the Mobility Practice Manager for Internetwork Engineering of Charlotte, NC, a Cisco Gold Partner with the Advanced WLAN Specialization providing Municipal Wi-Fi MESH and indoor WLAN deployments to organizations across the country. Dennis joined IE in August of 2007 and was formerly the Director of Wireless Services for Outsource Incorporated a provider of Municipal Wi-Fi and Wi-Fi MESH deployments. Dennis has been involved with Wi-Fi for over 15 years and was one of the first Airespace trained engineers in the country. Dennis has passed the CCIE/W written exam, is Cisco MESH Certified, Funk/Juniper WLAN Security Certified, Cisco Qualified Specialist for Advanced Wireless LAN, and Cisco Qualified Specialist for WiMax. Dennis has designed over 750 wireless LAN deployments surpassing 300 million square feet around the world and currently sits on IEEE Standards Association, IEC TC 62/SC 62A TAG for Enhanced Medical Networks, and Cisco Systems' Wireless LAN VAR Council/ Sales Engineer Virtual Team steering group where he has constant input and influence on the direction of product offerings from the Cisco Wireless LAN Business Unit. Quoted in magazines such as the San Jose Business Journal, CRN, TechIQ Mag, Mobile Enterprise Magazine, CIO Digest, and the Muniwireless Print Magazine, Dennis is a frequent expert speaker on the subject of Wireless LAN solutions, technology, and best practices at tradeshows and seminars across the country and his articles have appeared in several print publications and the world's premier website for municipal wireless deployments, Muniwireless.com. Dennis' business model for municipal deployments utilizing private funds has been touted as a highly viable solution and the likely successor to the Earthlink ISP model.










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