Root Bridge vs. Non-Root Bridge

Hi,
I want to understand the Root Bridge vs. the Non-Root Bidge when using Autonomous 1131 AP's on the same /24 network. Does that command matter in Autonomous? I have many devices working without issues on the same /24 network and all have the Root Bridge set,
Clearly confused...
Thanks,

The command is used on point to point links deployments
A non root bridge becomes a client and connect to another ap in order to do wireless bridging.
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Similar Messages

1300 Root-Bridge and Non-Root Bridge setup

I have two 1300s that I am trying to set up as Root Bridge and Non-Root Bridge, however, everytime i specify one of them as a Non-Root bridge, the radio0 interface becomes disabled. The only option that i am able to pick that enables the radio0 interface is "Access Point", which is what am trying to avoid it being.
Can anybody help me figure out how to go about this

A non-root's radio will show as disabled if it cannot find the root AP to associate to. Make sure you have "infrastructure-ssid" configured under the SSID on both the root and non-root bridges. Also depending on code versions you may have to configure the distance command under the radio interface on the root.

Root-Bridge and Non-Root Bridge Support

I was wondering if the ISR Routers (Cisco 1811w) support the root-bridge and non-root-bridge feature. If not is there another device apart from the 1310 and 1410 bridges that support this feature?
Thank You,
VT

Hi VT,
The ISR AP supports both of these roles;
Access Point Link Role Flexibility
Access Point Link Role Flexibility allows access point radios to operate in a combination of radio roles,
such as access point root, bridge root (with or without clients), bridge nonroot (with or without clients).
This provides a more flexible deployment scheme to support the various applications requirement. Note
that the ISR AP does not support access point repeater and WGB.
Wireless Non-Root Bridge
The wireless non-root bridge allows the access point radio to operate as the remote node in a point to
point or point to multi-point network.
Wireless Root Bridge
The wireless root bridge role provides support for both point-to-point or point to multi-point bridging.
http://www.cisco.com/en/US/docs/ios/12_4/12_4x/release/notes/rn1800xj.html
Hope this helps!
Rob

1310 Root with two non-root bridges

I have a Cisco 1310 root bridge and a 1310 non-root bridge . it worked fine for a year, I then installed one more 1310 as a non-root bridge now I?m seeing both of my non-root bridges dropping offline more and more. I checked my first non-root bridge today and the radio is down and I can?t seem to bring it back up. I have recently upgraded the tar to see if that would fix the problem. This problem started when I added my second non-root bridge. Did I miss some setting or something

Make sure the spanning tree protocol is disabled on Vlan interfaces

Cannot Associate 1532 Bridges in Non-Root role

Hello,
Can someone please tell me what I am missing and why I cannot bring up 2 bridges in "Root" and "Non-Root" roles?
I have similarly configured bridges in a Root / Non-Root role several times before with older AP's and never had any issues... although it was always just 1 SSID, 1 Vlan, and no subinterfaces...
The only way I was able to get these 2 bridges to associate was to put the Non-Root bridge into a Workgroup Bridge role and then *BANG* everything worked perfectly. I tried getting rid of the authentication and tried using the Parent command but neither helped. Prior to entering Station Role Workgroup Bridge, the only message I would receive was showing on the Non-Root side and all it said was:
*Mar 1 07:27:13.867 GMT: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associate: No Response
*Mar 1 07:27:28.891 GMT: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associate: Rcvd response from 544a.0005.8030 channel 3 2815
What am I missing or what have I incorrectly configured on my Non-Root config?
Bridges are both 1532i with the Autonomous Image 15.2(4)JB5
Attached are the configs prior to changing the Non-Root AP to a station role of Workgroup Bridge.
Thanks!

Hi,
This should work with multiple sub-interfaces.
Few more suggestions
1. Remove this from your BRIDGE SSID & check
mobility network-id 1
This is only require when you configure L3 roaming & WDS in place.
http://www.cisco.com/c/en/us/support/docs/wireless/aironet-1200-series/8103-ap-faq.html
2. Try to set WPA version 2 & only AES encryption.
Also try to Associate your Bridges using Open Auth first (as shown in my blog post initial section) & then try to add security.
HTH
Rasika
**** Pls rate all useful responses ****

In iPS 3.0SP3a, I would like to change the super-admin entry from root to a non-root user. The problem is I was able to install iPS as a pseudo-root however console will not let me in as that.

There must be a way to do this. Pls help.

Hi,
Please Check whether the said unix user is already existing under any roles of the default-domain.
If so, delete the user from that role in the default_domain and then
Goto : Manage Domain > view Domain Administrator Roles > Admin Role > users
Create the non root unix user name .
Once you create the user profile for this under the role defined for super admin,you can access as super admin.
Thanks,
Raj_indts
Developer Technical Support
Sun Microsystems
http://www.sun.com/developers/support"

Pretty gtk2 as root, ugly as non-root? [/SOLVED]

Heh, this is actually a little bit interesting. I've never ran anything that requires X as root until just a few minutes ago and realized that running applications such as pidgin and firefox as root, they are significantly prettier than what it looks like when I run it as non-root, even with the same gtk2 theme as you can see in the picture above. Oh, by the way, can you guys which one is my non-root and root running the above? The left is as non-root and the right is as root. See? A lot prettier... And I always questioned why Firefox was so damn ugly on Linux. It looks like it is suppose to as root.
Anyhow, I am curious on either what my non-root account is lacking (I think it is lacking the ability to read certain files), how could I configure it to look like what it does on root, or so on whatever the deal is. To me, this is just crazy. Heh, I am not saying how it looks is totally important, I've always been a fan of usability which is why I use dwm and stuff, but this is just crazy to me, lol, crazy...
Yeap.. So any ideas what I am doing wrong, missing, so on, lalala?
Edit: Blah, I feel like a fool. I played around with it more and realized it was clearlooks on root. My bad my bad my bad. :\ Well, at least y'all know what theme I'll be using. 8D
Last edited by Aprz (2009-04-20 11:35:42)

how are you selecting the gtk theme as non-root? also, which DE/wm are you using?
Last edited by fuscia (2009-04-20 13:41:49)

1310 Root Bridge will not Authenticate with 350 Non Root Bridge

I've exhausted myself solving this issue.
I have a 1310 set as a root bridge using WEPS. I have a 350 set as a non root bridge/without clients, also using WEPS (they both use the same SSID)
The 350 will not authenticate to the 1310. After doing a Carrier Busy Test, it is clear the 350 see's the 1310 with signal strengh of 100 percent.
(I have a test lab setup in my office)
If I make the 350 the Root Bridge and the 1310 the Non Root, The 1310 will authenticate to the 350.
I hoping someone else has seen this problem and can enlighten me.
Thank you.

I have successfully configured a 1310 Bridge as a Root Bridge and a BR350 Bridge and a Non Root Bridge/with Clients. I also had to force the 1310 to operate at 11MB only.
As soon as I make the BR350 Bridge a Non Root Bridge/without Clients, the authentication is dropped between the two.
I was hoping I could transition to the 1310 one unit at a time since I have over a dozen 350's to replace.

SAP 1602 Wireless bridge issue. Non root bridge loses it's configuration

Hi guys,
Today I tried to configure wireless link between two autonomous AP 1602 APs.
There is a problem with Non-root bridge. I configured it with this command:
AP2(config-if)#station-role non-root wireless-clients
Non-root bridge successfully joins the root bridge (root AP). Anyway, this configuration does not work, if I reload my non-root bridge. Even without reload, If I check my non-root bridge configuration it looks like this:
interface Dot11Radio1
no ip address
no ip route-cache
encryption vlan 1 mode ciphers aes-ccm
ssid WiFi-Bridge
antenna gain 0
stbc
beamform ofdm
Command "station-role non-root wireless-clients" is missing here. But I just configured it few seconds ago... Does anyone know, where could be a problem?

Okay... Everything works with OPEN ssid. Not with my WPA 2 configuration.
On both APs configuration looks like this:
dot11 ssid Private
   vlan 10
   authentication open
   authentication key-management wpa version 2
   guest-mode
   wpa-psk ascii 7 01100F175804575D72
interface Dot11Radio0
encryption vlan 10 mode ciphers aes-ccm
ssid Private
infrastructure-client ( on Root AP)
station-role root bridge wireless-clients ( on Root AP)
Few debugs:
*Mar 2 09:57:30.554: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 9c02.986d.9675 Reassociated KEY_MGMT[WPAv2 PSK]
*Mar 2 09:57:30.938: dot11_auth_client_abort: Received abort request for client 9c02.986d.9675
*Mar 2 09:57:30.938: dot11_auth_client_abort: No client entry to abort: 9c02.986d.9675 for application 0x1
*Mar 2 09:57:30.938: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 9c02.986d.9675 Reason: Sending station has left the BSS
*Mar 2 09:57:30.986: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 9c02.986d.9675 Reassociated KEY_MGMT[WPAv2 PSK]
*Mar 2 09:57:31.350: dot11_auth_client_abort: Received abort request for client 9c02.986d.9675
*Mar 2 09:57:31.350: dot11_auth_client_abort: No client entry to abort: 9c02.986d.9675 for application 0x1
*Mar 2 09:57:31.350: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 9c02.986d.9675 Reason: Sending station has left the BSS
*Mar 2 09:57:31.398: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 9c02.986d.9675 Reassociated KEY_MGMT[WPAv2 PSK]
*Mar 2 09:57:31.766: dot11_auth_client_abort: Received abort request for client 9c02.986d.9675
Everything works with android device and WPA2 if I change configuration to this:
dot11 ssid Private
   vlan 10
   authentication open
   authentication key-management wpa version 2
   mbssid guest-mode
   wpa-psk ascii 7 01100F175804575D72
interface Dot11Radio0
encryption vlan 10 mode ciphers aes-ccm
ssid Private
station-role root
mbssid

NON-ROOT TO NON-ROOT ASSOCIATION??

Hi,
I have one AIR-AP1242AG-A-K9, and two AIR-AP1242AG-N-K9. I have already configure them to work as bridge.
Root Bridge with wireless-clients ----------->     1   AIR-AP1242AG-N-K9
Non-Root Bridge1 with wireless-clients --->      1   AIR-AP1242AG-N-K9
Non-Root Bridge2 with wireless-clients ---->      1   AIR-AP1242AG-A-K9
I notice after reseting the root bridge or one of the non-root bridges that when I type the command "sh DOt11 associations" the results shows that there is an associatiation between the 2 Non-Root bridge. When this happend the connection of the clients associated to this APs is very unstable.
as far as I know the association is just between Root and Non-Root bridges.
I don´t know why this happend.
In order to avoid this I disable in one of the non-root bridge (AIR-AP1242AG-A-K9) the option "Force Infrastructure Device to associate only...."
Cisco's Docs show an example of config when there is one root bridge and one non-root bridge but in my scenario I have 2 non-root bridge and one root bridge.
I would like to know if the config for my scenario must be different from the simple scenario (1 root and 1 non-root).
I hope any of you can help me.
Regards

Hi Scott,
Thanks for your recommendations.
The mac-address authentication option you recommend is the option shown as "Root Parent MAC 1" ,"Root Parent MAC 2 ....." on Setting---> Network interface???
For root bridge , I should write down the MAC addres of the non-root bridge1 on Root Parent MAC 1 field and on the field of Root Parent MAC 2, the MAC of the non-root bridge2 ?? , am I right?
and for the non-root bridges I should just set on Root Parent MAC 1 just the MAC address of the root bridge???
Regards,

Non-root AP associates itself?

Hi,
I have three AP , one Root and two non-root. I notice something weird when I type command "sh dot11 associations" on Non-root APs.
If I type "sh dot11 associations" on NON-ROOT1 AP there is a lines that shows a client with the name NON-ROOT1 as a client associated, sometimes the line dissapeared but when I type " sh dot11 associations" on NON-ROOT2 AP a similar line is shown ; theres is a line that shows a client with the name NON-ROOT2
What could it be the reason???
NON-ROOT1#sh dot11 associations
802.11 Client Stations on Dot11Radio0:
SSID [enlace] :
MAC Address    IP address      Device        Name                 Parent         State
0018.de16.8d12 192.168.1.221   ccx-client    NON-ROOT1         self           Assoc
0023.4e6c.ec11 192.168.1.72    ccx-client    casa                     self           Assoc
0025.9cab.3073 192.168.1.70    ccx-client    -                          self           Assoc
0027.0c6b.7290 192.168.1.250   11g-bridge    ROOT                 -              Assoc
60fb.4242.aec1 192.168.1.79    unknown       -                         self           Assoc
c42c.0352.fbbb 192.168.1.71    unknown       -                         self           Assoc
NON-ROOT1#
Regards,

Hi ,
I have few question for you
Are both the Non root associated to the same root bridge ?
Is it possible that one of the Non root is associated to another non root which is running in Non root bridge with clients mode ?
Can you verify the Mac and IP address of the Non root bridge and check if they are the same ?
Regards ,
Sharath K.P.

Cisco 1300 configs; ROOT - NON ROOT

I'm using a AIR-BR1310-E-K9-R as ROOT and 5 NON ROOTS type (AIR-BR1310-E-K9).
Im looking for a default config to setup a wireless PTMP link between the ROOT and the NON ROOTS. To make this wireless connection i'm using an AIR-ANT2506

In a point-to-multipoint configuration, two or more non-root bridges associate to a root bridge. Up to 17 non-root bridges can associate to a root bridge, but the non-root bridges must share the available bandwidth See "Configuring the Access Point/Bridge for the First Time," for instructions on initial bridge setup.
http://www.cisco.com/en/US/docs/wireless/access_point/1300/12.2_15_JA/configuration/guide/o13frst.html#wpxref80859

7920 associates to root bridge but not to non-root bridge

I have 7920s using open authentication with WEP128 cipher. I have two 1300 root AP's (with client support) and three non-root AP's (also client support) in the same lab area. The root AP's and non-Root AP's associate and link to each other no problem. However, the 7920's will only associate with the Root APs. If I power down the root APs, the 7920s show "no AP found". I've verified SSID and WEP128 keys. I've also noted that the root AP does have a channel specified under dot11radio0 but the non-roots do not. Do the 7920's just scan for any channel until it finds an association or do I need to specify a channel in the non-root bridges?
Thanks,
Mike.

With static WEP, the authentication is happening at the AP level. Will want to ensure non-root is associated to a root though otherwise the interface may be in "reset" state.
The 7920 will look at these 2 as individual APs regardless of channel. Non-roots should have the same channel as the root, otherwise will not be able to communicate.

Can one Root Bridge support multiple non-root bridges?

Hey gang,
I have a pretty simple question here I think
I have a wireless bridge currently setup to support a separate office building on our property about 200 yards away from the main building. The wireless bridge has been working great and was a much cheaper solution when compared to the cost of making a fiber drop to this building. The needs of our business have changed (go figure), to include a warehouse building also on the backside of the property. It's not feasible to run a cable between these two building either. So I need to create another wireless bridge to this back warehouse as well. My question is can I just use another non-root bridge to link to the root bridge already in place, or does each wireless bridge require one root bridge and one non-root bridge?
I have good LoS to both buildings from where the current root bridge is, so if two non-root bridges can talk to one root bridge I should be able to just an additional non-root bridge and be good to go. But if wireless bridges are meant to be a one to one setup, then I'll need to setup an additional root bridge to link to the new non-root bridge?
It seems like you should be able to have one root bridge link to multiple non-root bridges but I haven't been able to find any clear examples of this being done.
Thanks in advance for the help!

That was just too easy.
I copied the configuration from the working non-root bridge to my laptop. I changed out the ip address of the BVI interface. I uploaded the configuration to the new 1300 bridge. I plugged it in and pointed the yagi antenna in the general direction of the original root bridge and started pinging the new 1300. Success!
I'll use my spare 1300 to get service up and running in the warehouse by the end of the week and I'll just need to order one more 1300 to make sure I have spare on hand if needed.
Thanks again!

1230AG non-root bridge not associating

Hello everyone,
I am new at setting up root and non-root bridges. I am trying to set-up three 1230ag devices.
One as the root and the othe two as non-root, I copied the config txt from the root and
copied that into the two I am going to use for the non-root. That way the ssid's are the
same. When I set the role to non-root the radio is not enabled and I get a message saying
Interface Dot11Radio0,cannot associate:No Response
Does any know what I am doing wrong, and how to fix it
Thanks

The radio interface will go down in response to being configured as a non-root bridge, so that much is working. But there must be a configuration error if it won't associate. Can you post the configs so we can review them?
Are the bridges mounted, or are they on your desk?

Root Bridge vs. Non-Root Bridge

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