Same SSID different MAC address

Ok... This is the best place for me to post this I think...
I am sharing an internet connection and am relatively close to the router (linksys) but because of the materials my building is constructed with I get a **** poor connection. So, there is a closer range extender that I can connect to, the range extender is also a linksys range extender, and I have no problems when I connect to it. The only problem is actually getting connected to it in the first place. My computer will automatically connect to the router rather than the base station. They both have the same SSID, and obviously different MAC addresses. Is there a way to force my computer to only connect to the range extender and ignore the signal from the router?

I have no problems with the range extender itself. It works great. The problem is that my airport card cannot tell the difference between the range extender and the router. Sometimes it will connect to the router, and sometimes to the range extender. I want to force it to connect to a specific MAC address rather than using only the SSID. Is there a way to do this?

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Same SSID, different passwords

Greetings all,
My work takes me to several schools every week, each with the same SSID (let's call it "faculty"), but each with a different password. I have to enter all the settings manually everytime I walk into a new school, and I'd love for the macbook (and iPhone too) to just remember all the settings for each school. I'm only a teacher so I have no power to change SSIDs or passwords. Is there a way for ML to remember networks by the AP's MAC address (and not just the SSID), or some other method?
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I have 3 linksys routers and the iPad has been able to connect to them all. I settled on the Linksys WRT54GL because the others are old and starting to exhibit dropout problems.
My suggestion would be to temporarily shorten your password to one or two digits and see if that helps. Before playing around with the Linksys I would suggest that beforehand you save your config file in case you need to restore the router.
I am on G band only, channel 6. My wireless security is set to WPA Personal, TKIP+AES, and I have a 26 digit WPA shared key. BTW, the 26 digit key is a real pain in the butt, but perhaps provides additional security.
Like nearly everyone else, I am occasionally experiencing short internet disconnects followed by an automatic reconnect. I'm hoping the next iPad upgrade will remedy this.

Same SSID, different vlans

I currently have a 4402 in place, with my main office building working fine.
We are looking at bringing in the wireless at 4 other sites, but we want to use the same SSID.
How would I go about assigning different vlans (networks) to the same SSID.

You can use the "AAA Override" feature on controller. You need to have different dynamic interfaces for different vlans configured on the controller. After sucessful authentication, radius server could pass the dynamic interface information to the controller and controller can put users to different vlans according to the feedback from radius server:
http://www.cisco.com/univercd/cc/td/doc/product/wireless/control/c44/ccfig40/c40sol.htm#wp1086421
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Error fetching network with same SSID, different floors

Dear,
I would like help from you, because I have a problem and I can not detect.
I have six devices installed in the WAP model 4410N on two different floors, and a third on each floor.
Both are with the same SSID, but when I'm walking him on a quest equipment that is in another floor, which causes the machine to drop the connection due to fluctuations and barriers such as walls, doors, windows, elevators, etc. .. .
I wonder how to detect only the AP network of walking even with the same SSID.
VLAN use one at each andaar.
If you have any suggestions thank you.
thank you
Anderson

Hi Anderson,
It sounds like you have 5 access point in standalone and 5 SSID broadcasting but you can't know the difference between which SSID is good depending where you are at.
If you can use any of the AP as a repeater (you may repeat 2 additional ap), when the signal strength of the original connection is low enough, it should fall to the more powerful strength of the repeated SSID.
Additionally, if you'd like to use more than 3 AP in a repeater group, you may want to look in to something like the AP541N. These devices support clustering, up to 10 units.
-Tom
Please rate helpful posts

Same SSID, different Vendors

Hi,
Has anybody in this forum ever deployed a wireless network with the same SSID, but using 2 different vendors.
We have a warehouse and office space separated with concrete wall. In the warehouse, we have one vendor
and in office, we have another vendor. We want to use the same SSID in order to facilitate roaming.
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Thx

It will not work well in some environments. Two separate systems, lightweight and autonomous does not communicate with each other to support roaming.
If you have standalone access points using open or maybe preshared key, then it can work since each roam required a full reauth. As long as the users are in the same subnet, it can work. If your using 802.1x then the roam will be very slow due to full reauths.
Sent from Cisco Technical Support iPhone App

SSID broadcast & MAC address filtering

Have just replaced my elderly Belkin 54G router with a Homehub 3. My network still has some kit where WSP security won't work, so I've always disabled SSID broadcast and used MAC address filtering as well as the obvious password access control. Can't see how to do either of these with Homehub 3. Anyone found the solution? RPH

downfall with BT homehub 3, there is no way so disable SSID Broadcasting this should be a feature to be added within the next firmware update
Kind Regards, Bert

E4200 v2 - Uses multiple MAC addresses for the same device

This unit seems pretty good at first but on looking at the Web interface I noticed that it was using multiple mac addresses for the same device and showing devices on the lan on the Wireless side and other odd things.
After a week of running it the home server network started to get erratic, it would seem to all point to dns and dhcp issues in the router.
Seems the V1 had the same issues that they did not fix on this.
The Cisco connect software shows 5 devices the Web based utility shows 3??.
Its pretty bad that they charge nearly $200 and cannot be bothered to finish the unit or address the issues that were in V1.

I am afraid I didn't get the clear picture of the issue mentioned in the post. Could you please elaborate a little bit? If you connect a device/computer wired and then later you connect it wirelessly. It is obvious that you would get to see two different MAC addresses for the same device, one for the LAN adaptor and other one for WLAN adaptor. If that is what you are referring to?
Secondly, may I know, what issues did you face with DNS and DHCP in the router? Is it not able to resolve the DNS or something else or DHCP is not sending IP address to the clients?

Same device name has multiple IPs and MAC addresses - my fix

Router: Cisco Linksys EA4500 (N900)
Cloud Firmware: 2.1.139.145204 (no, I don't plan to update this version to the latest)
Cable Modem Service
So I was playing around with Oracle's VirtualBox (it's kinda like VMware, or Microsoft's HyperV) on my primary LAN-wired desktop in my home network, to create Virtual Machines (VMs, hereafter) to technically preview Microsoft's Windows 10 (may be released next year), and a couple of my other Windows installations.
I ended up launching VMs with the same hostname, but with different MAC addresses (and thus, different IP addresses).
The Linksys cloud firmware displayed all those MAC-IP combinations under the same hostname icon in its Smart WiFi Tools' Device List.
Some people here have complained about this issue, and I'd like to say this has never happened to me before (using the EA4500 for over a year), and I have about 15 devices connecting to my router, a minimum of 5 online at any one time.
With this kind of situation, you can't individually address each of those affected machines for Parental Controls and other configuration options.
What I did to solve the problem:
1. Ensure every VM has a unique name (change hostname in Windows Control Panel).
(this can be challenging since a cloned VM will initially start with the same name as its master, and the problem will already occur. Once the problem occurs, just renaming the hostname and rebooting the device/VM will not solve the problem. Would be nice if it did)
2. Get all duplicated devices off the network.
3. Execute a "ipconfig /flushdns" from the command prompt.
4. Delete any device (click on the x in the Device List icon) when it goes offline in the Smart WiFi Device List.
5. Ensure no duplicates exist under Connectivity, Local Network, DHCP Reservations (I use DHCP reservation for a number of my devices so they are guaranteed a fixed local IP)
6. Hit Refresh (more than once! ) under Troubleshooting, Status to get a list of devices with non-duplicate MAC addresses.
7. Do the same after clicking on the DHCP client table button on the same page.
8. Reboot the router (this step was not necessary some times, but I'd do it just to be safe).
9. Now add the devices back onto your network one at a time.
If there are no more hostname duplications, the VM devices with their unique MAC addresses should create new icons in the Device List page as they connect to the home network.
Hope the above helps somebody.

For which version of Mail and OS?

Airport MAC address not set at factory?

I just received my new MacBook Pro and was getting ready to set my router so that DHCP requests from the new Macbook Pro would receive the same IP address on my home LAN.
The IP address for the Airport in my new machine is: 00:11:22:33:44:55 as determined by the following terminal command.
macbookpro:~ pderby$ ifconfig en1 | grep ether
ether 00:11:22:33:44:55
I tried to "spoof" the address with this command:
sudo ifconfig en1 lladdr 00:19:e3:d8:f5:07
which does not throw an error, but does not work.
Anyone else get a MacBook Pro where the MAC address for the airport was not set?
Any ideas on what to do?
I suppose I can just tell my router the MAC address is 00:11:22:33:44:55

Of course the MAC address and the IP address are two different things. I'm not sure why, Kappy, you thought I had this confusion. And I beg to differ, but MAC addresses are by interface, not by machine. So the ethernet port has a different MAC address than the Airport. They HAVE to have different MAC addresses or using two IP connections at the same time will not work when both ports are active at the same time and have the same MAC address. Using both ports at the same time with two independent IP addresses is completely supported by BSD Unix as well as OS X.
On my new machine the Ethernet Port EN0, has the MAC address 00:23:32:c8:27:4a
On my new machine the Airport Port, EN1, has the MAC address 00:11:22:33:44:55
I've had a lot of Macs, and this is the first time I've had an airport with this "default" MAC address.
My question is 1) does anyone else have a MAC address of 00:11:22:33:44:55 on their new MacBook Pro for the Airport hardware? If so, is this correct? Usually the MAC address has a manufacturer's Id embedded followed by a unique ID. 2) If someone is in the same situation have you talked to Apple about this? What did they have to say?
I can spoof the MAC address temporarily via the terminal, but it will reset to the hardware address on reboot.
Message was edited by: Paul Derby

Advantage of cloning the MAC Address?

What's the advantage of cloning the MAC Address?
Solved!
Go to Solution.

There is no "advantage" of cloning the MAC address. The only advantage would be to have internet or not.
In many cases, it is absolutely unnecessary to use the MAC address clone.If you have a working internet connection through your router then there is no need to use the MAC address clone function.
Only when you find that you have a working internet connection on one computer directly on your modem but not when you connect through the router (or a different computer directly on the modem) then it is necessary to use the MAC address clone function.
This usually is only the case with cable TV ISPs. They only allow you to have a single active internet connection at any time. They do this by remembering the MAC address which connects through a specific modem. If you first connect a computer for tests directly to your modem you'll have an internet connection. Now if you connect a different device to your modem it doesn't it's because the ISP has still locked the internet connection for the MAC address of the first computer.
How to remove the lock depends on the ISP and the modem. Sometimes it's enough to reset the modem or to power down everything. Sometimes you have to power down everything for a few hours and after that the first connecting device is the one with the internet connection (i.e. make sure to connect the router then...) If you want to know exactly how your ISP does this you should ask them...
The simple workaround is to use the MAC address clone function. The router "clones" the MAC address of the first computer, i.e. it basically pretends to be that computer. The MAC address is accepted by the ISP and is immediately allowed to the network. You have a working internet connection either directly on the first computer or through the router because both use the same MAC address. (It's no problem on the router because the MAC address is used on the internet port only...).
Of course, you have to remember all this. If at some later time you connect a different computer directly to the modem (e.g. you have connection problems and you want to find out what's wrong) you may "lock" in a different MAC address for your connection and you'll have to wait again to regain the connection for a different device.
But again: there is absolutely no need to use the clone function if you have a working internet connection through your router.

Unique codes for different mac devices?

Dear All,
I have recently had my hotmail hacked and I have a list of IP addresses for my activity but I was wondering whether it was possible to differentiate devices that have logged into my account via the IP address as I believe that the person was using my wifi (I know they have a mac).
Any suggestions would be appreciated.
Many thanks,
Vonnie

Bmyers wrote:
DIRECTV-HR20-94E3D75D 00:50:94:E37:5D 192.168.1.120 LAN
DIRECTV Mediashare Renderer 60:02:B4:3E:CE:59 192.168.1.120 Wireless
Here are the address from the router report.
Notice .120 for two different MAC addresses.
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Reserver the next address again for the other connection. You can keep the .120 address or change it here if you like to something else thats not being used. Again edit the host name for this connection, DIRECTTVwired. Save setting.
It is odd that the router is using same IP addresses for different MACs.

BE 5K CUCM and CUC Mac-Address registering license

Hi All,
I am really confused for registering CUC license to which mac-address. (CUCM or CUC)
I have CUCM be 5k on Server 7828 both CUCM and CUC is installed on same server. For CUCM i got the mac address from show status, but how about registering the license to CUC it should be registered on same CUCM Mac address or CUC has different mac-address.
I uploaded the licenses in CUCM and need to upload the license in CUC.
Thank you all in advance.
Best Regards,
Mohammed SaberUddin

MAC address changes should NOT effect the BI 4 server in any way, everything binds to the Server Name & IP Address.
Regards,
Ajay

Unknown MAC address connecting

I've got a WRT54G v6 that is password protected via WPA2 Personal TKIP+AES, and SSID broadcast enabled. In the Status menu > Local Netork > DHCP Clients Table there is a MAC Address listed that none of my devices have. Is there anyway I can find out what or where it is connecting from? Is there a way that I can keep it from connecting to my network? Thanks.

PB_G4_OS_X wrote:
All our devices, 2 Macs, 2 iPods and an iPhone all have different MAC addresses than the one odd MAC address that is showing up in my routers list. Our xbox is not configured to connect to the router although it does "see" the router. My sons girlfriend that ocassionally comes in has a smart phone but, shouldn't it disconnect when she goes out? The MAC address is still showing up on the list. Is there a way to keep smart phones or other devices from connecting to our router?
A certain device should disappear on the Clients Table List once it is not anymore connected to the router.
Try to ping the IP address of that device so we will know if it is still active or not.

Satellite C850D-104 - MAC address changes

On the new C850D-104 laptop I have an issue with the mac address.
Well in short: it changes.
My firewall (also) filters on mac address so I need to add any new machine's mac address.
Which seemed to work fine until I warm rebooted the laptop. No connection possible.
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Hi.
I had the same problem in a C850-154 (with a Realtek wireless adapter) and the driver was from the beginning of this year.
I've updated with the driver from 14/09/12 (version 2.00.0020) and the problem was resolved.

ISP blocks my APBS due to various MAC addresses used by the router

Hi all,
My Internet provider limits access to Internet over Ethernet cable
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My configuration is APBS GigaN with "shared public IP" and with
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I reported EthernetID of my APBS to ISP, but stuck into the problem
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as I understood these MACs are exactly AirportID and EthernetID of
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Regards,
Strim

kevj is right, Your linksys router has 3 MAC address and they all are assocciated with each other.

Same SSID different MAC address

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