Redundant Wireless links

i'm in the process of investigating on redundant wireless links. the case is, i have two wireless antennas each of them on different network and serving two different areas. is it possible to let one of the antennas to take over if the other one fails?

The controllers i do not have much experience in so i had to go out researching via google and cisco's internal and forum search function. It first appears that the controller doesnt support hot standby for the APs themselves but rather increases the APs power around them.. However again this is just some brief research i did and may be incorrect. If you dont recieve an answer open up a tac and they will be able to tell you for sure.
Sorry i wasnt more help.. If you end up using some ap's outside of the controller you can find the Hot standby setttings by using the GUI and clicking on "services" then the 2nd option is 'Hot Standby'.

Similar Messages

I just got a new iPad 2 and I have lot of questions. I was able to wirelessly link my iPad and iTunes on my PC. I was able to SYNC my email and calendar (new only no history), however I have not been able to SYNC Outlook contacts.

I just got a new iPad 2 and I have lot of questions. I was able to wirelessly link my iPad and iTunes on my PC. I was able to SYNC my email and calendar (new entries only no history), however I have not been able to SYNC Outlook contacts. Outlook has multiple contact lists. Only one has any data. I can't find a way to delete the others and I can't keep the one I want to use at the top of the list. Any ideas?
I have a question about email. I have several thousand emails in 10 or so days. How can I select multiple emails for deletion in stead of one at a time? How do I designate emails from a given sender as junk or block certain senders?
Ron

the spcs page on this site state which video formats the ipad supports
I'd suggest converting your old videos to one of those formats
handbrake is a free program which does this for you
itunes used to be able to too when I right clicked incompatible media but don't see the option any more
or maybe it only show when one right click incompatible media and currently my lib don't have any
about the music then it's odd what formats are they?
if they are acc protected have you tried to remove the DRM this can be don using itunes as
apple don't use DRM for music any more

Ipod connection causing netgear wireless link to fail

Every time I connect my ipod to windows, my wireless link (netgear router) fails, and I have to turn my computer off an on again. Using itunes v7 with 4th generation ipod.

DHCP lease time on the router is 30 minutes.
It appears that the clients, specifically the only wireless laptop on the network, drops the connection and when it reconnects it gets a new lease and IP address. This happens many times until all IPs are in use. I don't know why the lap top drops the connection when the signal strength is excellent.
I have seen the MAC address of the Client in some cases but the majority are the WRE.
I've linked to some pictures of the router set up, the DHCP client list, and the basic WRE setup. There are only 3 wireless devices in my home, 1 laptop, 2 iPhones. I guess a neighbour could be trying to connect but I do have MAC address filtering turned on so only included MAC Addresses can connect.
I guess I could always update the firmware but I only want to do that if it will fix this issue. I tried the live chat today but I didn't have access to my home network so there wasn't much that we could do.
Basic Router Setup
DHCP Client List
WRE Setup
Message Edited by 221385 on 12-22-2009 07:16 PM
Message Edited by 221385 on 12-22-2009 07:22 PM

Arp across wireless link

We have a client device connected to a BR1310 the bridge is wgb mode and auths to an AP1200 using leap, the client can not be accessed across the wireless link.
We can ping the client device from the bridge but not from any device across the wireless link. The address of the client appears in the arp table of any device that tries to ping, but there is no reply. The address and gateway are correct on the client.
Devices have been changed out and an address change was made, but this did not work.
Here are two points of interest regarding this issue. If arp caching is enabled the device will respond for a minute or two then stop responding again. If arp caching is then disabled the client will respond again for a minute or two.
We are running VTP, the radios and client are on vlan1 I do not know if this would make a difference.
Any thoughts regarding this would be appreciated.

Hello, The problem was with the IOS, I found a few versions that had these same issues.
The following information is what I forwarded to TAC.
1200-31 AP - 1310 BR
123-4.JA and 123-4.JA2 = yes
123-4.JAx and 123-7.JAx = no
123-7.JAx and 123-7.JAx = no
123-8.JEB1 and 123-8.JEA2 = yes
123-8.JEB1 and 124-3g.JA1 = yes
I tested the following versions of IOS in the following configuration. BR1310 conigured as WGB
connecting to either AP1200 or AP1231 authentication method LEAP.
The Bridge was serving only a single client connection. The result from versions that failed was
failure to pass traffic to or from the client connected to the 1310-WGB. If ARP cache is enabled on
WGB traffic will pass to and from the client for 20 to 45 seconds then fail. If ARP cache is then
disabled traffic will again pass to and from the the client for 20 to 45 seconds then fail.
The client can always be accessed from the directly connected WGB.
On the versions that worked the client is always accessible from all networks.
I have too much going on to explore the reason why some of these IOS versions did not work, but the latest release worked on both AP and Bridge. All is good.

WRT54GX4 Wireless link not working

Hi all
I have been trying to setup a WRT54GX5 Router but I've not been able to make the wireless link work.
The wired connections work perfectly but my laptop cannot see the wirleless network.
I've upgraded the firmware to the latest version available at Linksy's site 1.00.20
In the Status/System Performance page of the configuration the Connection status for wired is "Connected" but the wireless is always "Down".
In the Wireless/Basic Wireless Settings page the Wireless Network Mode = Mixed.
Also the "Wireless" LED in the equipment is off. It just lights up briefely at powerup (so, the LED is OK) but then remains always off
I've rebooted the equipment a number of times but to no avail
Any suggestion, comment most welcome
Thanks in advance
RL

Hi
Thank you for your post
I've just set the option Wireless Network Mode = Mixed in the Wireless/Basic Wireless Settings page of the configuration tool.
Could you please elaborate on how to enable the wireless option.
Best regards
RL

Tecra 8000 wireless link

I have obtained a Tecra 8000 with a 10/100 Network port replicator that will be used as a second desktop at home. On my main PC I use a Netgear DG834G ADSL wireless router (802.11g) for a broadband connection. What is the best way to make a wireless connection with the Tecra ?
There appear to be a number of cardbus adapters (eg Netgear WG511)or USB adapters (eg WG111).
Is the Tecra 8000 USB v2 or v1.1 ?
I could simply put the router close by and use the ethernet link but I would rather have the laptop away from the available phone sockets. Is it best to test the LAN connections etc in this manner before attempting the wireless link?
Regrettably I have cross posted this on the Tecra forum before I discovered this one. My apologies

I have the same router and use a Netgear WG511T...works very well. Just install the software that comes with the wireless card and plug it in...that's about it. You can then network the two computers together...if you're running XP on both it's pretty automatic (just run the network wizard on both machines).
You can of course hard wire your Tecra into the router...but as you say a wireless link is far more versatile and after all, that is what the DG834 is designed to do.
Make sure the drivers for the DG834G and the network card are the most up to date ones. You may have to reconfigure the router to allow a new computer to log into it...but that's not too difficult

Wireless link(bridge) between two ap 1300

Hello, i need to configure wireless link between my 1300 series, how can i use them like a bridge and access point in the same time?
Do i need static ip for BVI interfacess between them for bridge or its need to be DHCP, is there any example? i would be great to know that
thank you

Here is a simple config example
Root                                                                           Non-Root
R(config)#dot11 ssid test                             n-R(config)#dot11 ssid test
                #authentication open                    n-R(config)#authentication open
               #infrastructure-ssid                       n-R(config)#infrastructure-ssid
               #exit                                                                  #exit
R(config)#int d0                                          n-R(config)#int d0
               # ssid test                                                  #ssid test
                #statio-role root bridge wireless-client          #station-role non-root bridge wireless-client
                #no shut                                                   #no shut
For BVI interfaces you can assign either static or dynamic IP address
But it is highly recommended to have static ip for better management.

Wireless link example

Hi,
I was looking for a Labview example of how to establish a wireless link
between two PXI boxes. One with a NI 5660 as a receiver and one
with a NI 5670 as a transmitter. I wish to read in a text file,
convert it to bits, modulate and then transmit from one PXI box
wirelessly to another PXI and recover the file. It doesn't have
to adhere to any specific standard such as 802.11 and any sort of
modulation such as QAM or PAM will do. Has anything like this
been done?
Thanks,
Carl

Hi Andrey -
I apolgize for Minh's lack of response. He's no longer working on web support, so I won't be able to follow up on his work.
While the exact set of programs requested by the original poster may not exist, there are several example programs that ship with the Modulation Toolkit that can help. Many of them exist in Mod/Demod pairs, and you can run whichever program necessary on each system. Their names all start with "MT RFSA" or "MT RFSG", so they're easy to find. For instance, you could use the MT RFSG Generate QAM and MT RFSA QAM Demod pair.
David Staab, CLA
Staff Systems Engineer
National Instruments

Redundant up-links distribution switches

I am trying to understand some basic math involved in calculating redundant up-links for access switches to distribution switches. The ICND1 depicts a diagram showing 40 access switches with 2 distribution switches with 4 up-links to each of 40 access switches resulting in 160 links.
It then goes on to say that If the design instead did not use distribution switches, to connect a single link between each pair of access switches would
require 780 links.
How was 780 calculated exactly?

Hi,
The 780 is calculated as (40 * 39) / 2.
In general, this is a question asking about the number of links needed to interconnect N nodes with a single direct link between each pair of these devices. The formula is N * (N-1) / 2, and it follows a simple logic that on each of the N nodes, you need to connect N-1 links to reach the remaining devices, and because a link connects a pair of devices, adding each link always "deals with" a pair devices, hence the division by 2.
Best regards,
Peter

Redundant Failover link on ASA5500 Series?

Cisco recommends connecting failover link over L2 switch in thier document.
But if L2 switch fails, both ASA's failover I/F will down.
I wonder if there is any way to get redundancy for failover link, like etherchannel.
Or should I prepare two L2 switches to avoid both ASA's I/F down?
Any hints appriciated.

Even if both of the failover interfaces go down it wont affect the traffic flow. Also if the switch is being monitored this will get detected and can be solved easily. If you still want redundant failover links, using seperate switches will be good idea.

ASA redundant failover links

Hi,
We are setting up a new ASA which is in multi context mode. I was wondering if it is possible to setup redundant failover and state links? I know that it is possible to run failover on one link and state on another, or both over the same link, but is it possible to have both failover and state running on 2 links? For example, failover and state on ten1/0 as well as failover and state on ten1/1.
Hope I have explained my question well enough. If not I will try to explain better.
thanks

I would suggest to make a redundant logical link and attach two physical links to it. Than during failover link configuration specify your redundant link as a failover link. Not sure if it works but dont see any obstacles for this solution to fail..

Problems establishing wireless link -1410 bridges

I have 2 new 1410 wireless bridges on which I can not establish a wireless link using 3ft Andrews Parabolic antennas (33db gain) over a distance of about 17.7 miles. I am running the radios in autoinstall mode, have verified the azimuths and performed vertical sweeps with the antennas on each end off the link, still nothing.
There are no log entries showing any change in the radio or association status. Running debugs while moving the antennas changes nothing as well.
Is there any good reason I would be receiving a link? These new radios and antennas are replacing a pair of old 350s using grid mesh antennas and have gone up in the same place as the 350s.

I didn't try connecting them in the same room, didn't really think about it because I deployed the same set up last year for two other point-to-point links and another one this week without any problems. This link is the longest distance though. I checked the math using the Cisco AP distance spreadsheet and even running at 54Mbps I should be able to get 20+ miles of distance. I checked the path in Google Earth to make sure there weren't any surprise hills in the way, but I'm in KS so hills really aren't much of an issue.
The radios are good, I can perform a carrier busy test and occasionally I will see some other radio signals. My tower guys performed a vertical sweep yesterday with no luck and verified the elevation against the previous antennas. At this point my biggest fear is the antenna towers are not tall enough for this new set up.

Establish encrypted wireless link with Domain computer

I am begging to migrate all of my wireless links to WPA, currently they are unencrypted. I have a few computers that recieve there connectivity via wireless link. I need to have these computers establish an ecyrpted wireless link so domain users can log on to them with cached credentials. I have 1100 series Ap that establish wireless link with an ACS using WPA and MS-CHAPv2.
I was told i have to set up 802.1x the allow computer to establish link but have not been able to figure this out.
Mike

Mike
With EAP-PEAP the wireless supplicant uses your windows username / password and the laptop/desktop machine account that exists in the window active directory database to authenticate
With EAP-TLS the wireless supplicant uses the
digital certificate installed on the laptop/desktop to authenticate
Both methods use WPA or WPA2 to encrypt data
take a look at this link
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_server_for_windows/4.1/configuration/guide/peap_tls.html
Mark

Wireless Link two wrt54g

I have a floorplan that pretty much eliminates my being able to get Ethernet cabling between my Computer area and Home Entertainment center.
When it was just Tivo I linked it to the existing wrt54g - no problem.
Just added XBox 360, upgraded Cable Box(needs Internet also and Would like to add a slingbox.
At the local Fry's I had the option of purchasing 2-3 access points ($75 a pop) but the Tech guy recommended purchasing another wrt54g and bridging the two. It made sense.
First one is
192.168.1.254 (since I have a DSL router at 192.168.1.1)
Operating mode = router
Using Mac Filter for security
Lan cable in the hub side --
works great for Laptop, tivo, etc
Second one is
192.168.1.253
Operating mode = router
All three macs placed in the MAc Filter List for #1
Wireless channels are the same.
Security off.
#1 doesnt see #2 on the wireless network(I check the mac list to see if attached)
This just the wrong idea or plan? IF yes - suggestion on a better one.
Suggestions on what to fix or review

I think what you need is a Wireless Bridge using 2 WRT54G's. You will have to flash one router with DD-WRT v23 SP2 in order for this to work. I recommend you use a WRT54GL v1.1 for the secondary router/client bridge. It has more RAM and Flash Memory. HERE is a link to a wireless bridge tutorial.
I have this setup in my home and it works great. No drops, steady connection, real easy setup.

Macbook keeps losing wireless link to HP printer

My Macbook links to HP printer wirelessly fine when its just started up but after time of not using printer Macbook loses wireless connection. In HP Utility software it gives error message ' looking for printer' or devicde not found.
I've followed HP troubleshooting guide and changed IP address to fixed rather than automatic setting as per guide but same problem.
Its really frustrating, I have to restart Macbook to reestablish wireless connection. Internet all works fine.
Any suggestions welcome.
Thanks
Steve

I have the same frustrating problem. It works every now and then, then it stops for no known reason! Can anyone else who has experienced this assist?
Thanks very much.

Redundant Wireless links

Similar Messages

Maybe you are looking for