High availability with two 5508 WLAN controllers?

Similar Questions

• Implemented shared disk high availability with TimesTen11

  Hi all
  
  I need to have shared disk high availability using cluster on AIX HACMP
  Could you please share steps/info, this application with the TimesTen11.
  
  Kind regards
  -AK
  
  Published by: tt0008 on Sep 9, 2010 02:09

  Hello

  We do not really recommend using disc shared according to HA with TimesTen since it is a bit complex to install and (b) is not officially a "supported" configuration Also, failover and recovery times are usually much longer than with a HA configuration based on TimesTen replication. I would like to invite you to consider using the TimesTen for HA replication. That's what it is designed for, and this is the recommended approach.

  Kind regards

  Chris

• vSphere high availability with no shared storage? And general problems with VMware partner supplier

  
  HA can function without shared storage?

  It may not by the availability of vSphere manual.  However the global VMware partner who sold me on VMware solution said that the shared storage is not required for HA.

  This is the same guy who told me that I would not need to buy Windows Server licenses because everything was included in the package (vSphere Essentials Plus).  Now, I have no Windows license, no shared storage and a customer who will not be happy that we did not include these costs in the citation for this project.

  HA can function without shared storage?

  No.... you need a storage shared for HA.

  This is the same guy who told me that I would not need to buy Windows Server licenses because everything was included in the package (vSphere Essentials Plus).  Now, I have no Windows license, no shared storage and a customer who will not be happy that we did not include these costs in the citation for this project.

  Maybe your partner speak the vCenter Server Appliance that is included on vSphere Essentials Plus and you can use this device to manage your vSphere, ESXi without need a VM of Windows (with Windows license) to install the vCenter server.

• Two WLC 5508 anchor high availability

  Hello.

  It is possible use 2 WLC 5508 EN HOW to ANCHOR in an active scenario?.

  For example, if a WLC down the service, another Dungeon provide service to customers of anchor?

  At the moment we have just a WLC 5508 anchor mode. What do I have to configure high availability of the ANCHOR.

  Thank you very much!!!

  You have redundant WLC as anchor points, but if an anchor fails, the user must reconnect.

  There is a feature on the WLC HA, but it is mainly for foreigners redundancy WLC anchor no redundancy. With guest several anchors overseas WLC balance the load between the two. You will not be able to put a primary or backup.

  Sent by Cisco Support technique iPhone App

• WLC 5508 high availability

  Hello

  Today I have two WLC 5508 (with license for 100 AP each of them), on a single site.

  The WLC work availability (active-standby).

  However, we have a new scenario, with 02 sites: A and B (attachment).

  I would like to know if it is possible to work as follows:

  The WLC - A as the main controller of site A. WLC - B as a backup (BDC) of WLC.-a.

  The WLC - B that has the PDC site B. WLC - as a backup (BDC) to WLC - B.

  For example:

  If WLC - a falls, site access Points are managed by B WLC site - B and vice versa.

  Is this possible?

  How can I configure the new scenario? Don't forget, there is a site-to-site between Site A and Site b.

  Another point:

  If I add more than 50 APs on Site A. How does the license number?

  Should I buy a license for the two WLC?

  TKS,

  >....

  >.. .is it possible?

  No. , high availability in terms of controller is supposed to be what is said, the backup controller is not 'full' - stby and cannot play other roles.

  M.

• SNS with high availability option

  I need help to understand the requirements of network and connectivity to deployment Cisco show and share with the high availability option where the DC and DR are different geographical locations.

  As I understand it, to achieve high availability, the DMM and the SNS servers require a L2 connectivity between the primary and the secondary server. How can this be achieved in a scenario where two data centers are connected by WAN / MAN links?

  Thank you.

  Chaitanya Datar

  + 91 99225 83636

  Hi, Datar,

  I already asked this question to the TAC, and it is unfortunately clear today the HA mode with 2 servers connected mode "back to back" via Ethernet2, REQUIRES to be on the same network of L2.

  It is not yet based on the IP routing layer, and therefore it is did not in charge of the design when using remote data centers...

  :-(

  It's a shame, I know, and I pointed to the BU of the SnS.

  May be part of a next version of work will be based on network IP L3 routed...

  Wait and see.

  Hervé Collignon

  Converged Communications Manager

  Dimension Data Luxembourg.

• It is possible and effective: high availability (failover) on 2 guests with local storage?

  Hello

  I have a discussion on the implementation of ha (failover) with 2 guests with local storage.

  My advice is to go with a shared storage. But there is another view, use the cluster failover MS with local storage service to save on the shared storage hardware.

  2 "mirorred" on each host machines. Is it feasible at all?

  The HughesNet: have 2 virtual machines (SQL server and server applications in a highly available environment). The workload of the machines will be raised to 2 very powerful servers that are supposed to be buying.

  1. Please briefly explain a feature of local storage to provide HA.

  2. I got to cluster in the virtual environment, not so I guess that the shared storage is used only in the virtual environment.

  Thank you.

  Michael.

  There is software that can replicate a running, physical or virtual machine to another accessible location on the network. This could be as simple that between two close hosted ESXi of VMS or high-speed WAN. Take a look at things like neverfail, doubletake others.  The costs would probably be a bit prohibitive in a smaller environment. It might be possible and maybe even practice to use a virtual storage device having a failover replication. Use of storage on each host and allows to provide the data store. Open-e

  The Microsoft Clustering solution needs a shared storage.

• OBIEE 11 g high availability/evolution using two servers

  Hi all
  
  I have 2 servers from Redhat Linux 64 bits.
  By using these 2 servers, I want to achieve high availability & failover.
  
  I have installed OBIEE (installation of the company) on the first server (main node) and the scale on the field on the second server (secondary node).
  
  Now, if the master goes down because of a reason any (by example-failure), will be the administrator of the server on the secondary node becomes active?
  My goal is to provide a system with minimal downtime.
  
  Please advice.
  
  Thank you
  Nitin Aggarwal

  Make sure the parameter EM is defined: virtualize = true

  This means that if the server administrator is no longer available, the servers BI will be always available for all users

  http://docs.Oracle.com/CD/E21764_01/bi.1111/e10543/authentication.htm#BIESC6075

• Is required for high availability and the DRS Vmware-AAM service? Has it been renamed with ESX3.5 U3?

  Hello Tech community.

  Is required for high availability and the DRS Vmware-AAM service? Has it been renamed with ESX3.5 U3?

  On one of our ESX 3.5 U3 infrastructure, VMware Ha and DRS work very well, and the following list of services are started, view VMware-AAM

  Here is an exit of an ESX 3.5 U3 system

  1. service - status-all | grep running

  crond (pid 1900) is running...

  gpm (pid 1851) is running...

  VMware-pass (pid 1942) is running...

  ntpd (pid 1842) is running...

  cimserver (pid 2452) is running...

  snmpd (pid 1557) is running...

  sshd (pid 4074 4037 1566) is running...

  syslogd (pid 1321) is running...

  klogd (pid 1325) is running...

  At least a virtual machine is still running.

  VMware-aam is running

  VMware VMkernel authorization daemon is running (pid 1911).

  VMware-vpxa is running

  webAccess (pid 1880) is running...

  openwsmand (pid 2534) is running...

  xinetd (1827 pid) is running...

  Now on our production VMware MCC cluster ESX 3.5 Update 2 we do not find "vmware-aam" this service but HA and DRS work very well, and the logs in/var/log/vmware/MAA indicate that everything is fine.

  1. service - status-all | grep running

  crond (pid 2033) is running...

  gpm (pid 1882) is running...

  hpasmd is running...

  cmathreshd is running...

  cmahostd is running...

  cmapeerd is running...

  cmastdeqd is running...

  cmahealthd is running...

  cmaperfd is running...

  cmaeventd is running...

  cmaidad is running...

  cmafcad is running...

  cmaided is running...

  cmascsid is running...

  cmasasd is running...

  cmanicd (pid 2703) is running...

  cmasm2d is running... [OK]

  hpsmhd (1986 1955 pid) is running...

  VMware-pass (pid 3502) is running...

  ntpd (pid 1873) is running...

  USE: Departure from OVCtrl | stop | restart | START | STOP | activate | Disable

  USE: Departure from OVTrcSrv | stop | restart

  cimserver (pid 3536) is running...

  Ramchecker is not running

  snmpd (pid 1745) is running...

  sshd (pid 1861 1447 1754) is running...

  syslogd (pid 1684) is running...

  klogd (pid 1688) is running...

  At least a virtual machine is still running.

  VMware VMkernel authorization daemon is running (pid 3472).

  VMware-vpxa is running

  webAccess (pid 1984) is running...

  openwsmand (pid 3642) is running...

  xinetd (pid 1854) is running...

  I did a few Google queries and couldn't find a definitive answer

  The service of AAM is required for HA - it is not required for DTH

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• Two R810s, each with two 8Gb Fiber Channel HBA + MD3620F + MD1220

  Hi people.

  I am planning an installation on this end, and I'm tender hand in the hope that the community can help me carry this all together.

  To explain, I have two servers Dell PowerEdge R810, each with two 8 GB HBA Fibre Channel adapters.

  I also have a Bay SAN of Dell PowerVault MD3620F 8 Gbps, with two controllers.

  I also have a Dell PowerVault MD1220 DAS SAS Expander Bay.

  I think to connects both R810 servers directly to the MD3620F, in order to consume all ports of four CF on the MD3620F. That is, one in each controller, from two HBAs in each server. (I can do this, or do I need a Fibre Channel switch? The MD3620F has 4 available ports, 2 per controller, so it would seem to be a natural configuration for only these two servers)

  Then, I will link the MD1220 to the MD3620F, so that its readers are also accessible through the two R810s on the link of Fiber Channel 8 Gbps. (what is the process to connect a MD1220 to a MD3620F?)

  Thoughts, tips, suggestions?

  Thank you

  -Wentil

  Hello Wentil,

  Here is a link to our deployment guide. FTP://FTP.Dell.com/manuals/common/PowerVault-md3600f_Deployment%20Guide_en-us.PDF . in the deployment guide, we show how you can do an install direct attach & network attached using a fiber switch.

  Please let us know if you have any other questions.

• Remove the secondary controller and tertiary high availability for each access point

  I want to remove secondary and tertiary sector controller of high availability for each access point. I have more than 900 APs associated with a Version of the WLC 8510 8.0.121.0 software. What is the best/better way to remove secondary and tertiary controller?
  Or I can create a model first. We use version 2.2

  Hello

  Easiest way:

  Yes you can do this by using the first Cisco Infrastructure, you can create a Setup AP Lightweight model to specify the name of the PDC and the IP address and specify an empty value (choose the first empty option in the drop-down list) and 0.0.0.0 for the secondary and tertiary sector controllers.  Then you can apply this model to the AP, and she must remove (virgins all) values for these fields.

  Long way:

  Yes there is no clean way to remove it from the CLI. you need to manually remove each on the AP.

  Concerning

  Remember messages useful rates

• NAC Manager high availability peer CAM DEAD

  Hello

  I have two managers of the NAC with high availability and I used both interface eth1 of sides as a link Heartbit.

  I did following steps for high availability.

  (1) synchronize the time between two cams.

  (2) generate a temporary SSL certificate in CAMs and import-export procedure made in the other.

  (3) make a CAM as a primary and the other as secondary.

  But after all this made configuration I can see the State in surveillance > reports-primary CAM is in place in both servers and redundant CAM is down.

  Also on the failover tab, I can see - Local CAM - OK [Active] and counterpart CAM:-DEAD.

  I have attached some screenshots so that you can find the same.

  Your help will be very appreciated.

  Thank you

  Try these steps and check that all steps were followed:

  http://www.Cisco.com/c/en/us/support/docs/security/NAC-appliance-clean-access/99945-NAC-cam-HA.html

• VPN high availability: double 3 k in the hub and the PIX as rays

  Hi Experts.

  In my scenario, I need routing between the rays and, above all, high availability (HA).

  On the shelves, I have Pix 501/506E, OS ver 6.3. In the hub, I have a couple of redundant VPN3k.

  What mechanism is the best:

  1 - hub and spoke topology with remote EzVPN in rays - to HA, I can take advantage of the "load balancing" feature of the VPN3k?

  2 - hub and spoke topology with remote EzVPN in rays - to HA, I can take advantage of the "backup server" feature of the VPN3k?

  3 any-to-any topology (an IPSEC tunnel between any pair of sites) - for HA, I can take advantage of the 'LAN-to-LAN backup' feature of the VPN3k?

  Thank you

  Michele

  I'd go with NLB on the backup server. With load balancing your connections will be spread over the two hubs. If a hub dies, then at least it will only affect half of your connections, rather than each of them in case of death of your primary and backup servers using.

  If a hub dies, your PIX connections will be de-energized for a short period, but they will be able to reconnect back automatically without making you no change.

• High-availability software ACS 5.2

  Hello

  Can I configure main configuration / backup with the ACS 5.2 on Vmware software? Replication / high availability will happen just as if you use two devices? I need to install two ACS5.2 software on different machines to Vmware.

  concerning

  Joe

  Hey Joe,

  Yes it is possible. Make sure that you meet the requirements listed on this document:

  http://www.Cisco.com/en/us/docs/net_mgmt/cisco_secure_access_control_system/5.2/installation/guide/csacs_vmware.html

  Thank you

  Serge

• ACS high availability

  Hello

  I have ACS solution engine. Currently, it is connected to the switch using a single network adapter. For the

  high availability to change aside, I want to use the second card netwrok thus linking

  the second main switch as well as in the case of connectivity with a carrot switch break. ACS will be accessible via second switch.

  Network card Ip address is currently 192.168.200.14/24

  How to configure the second network adapter on the ACS in order to achieve high availability.

  Hello

  You cannot use the second NETWORK card on GBA.

  The following link mentions "ACS takes care operating an Ethernet connector, but not the two connectors"

  http://www.Cisco.com/en/us/docs/net_mgmt/cisco_secure_access_control_server_for_solution_engine/4.2/installation/guide/solution_engine/ovrvuap.html#wp1053900

  I hope this helps.

  Kind regards

  Anisha

  P.S.: Please mark this message as answered if you feel that your query is resolved. Note the useful messages.