High server availability

Hi all,
I need to achieve an high availability for all the servers having only two NICs belonging to different VLANs with a particular configuration.
Infact, these servers are connected as shows at following:
(VLAN1) -->Server1--> (VLAN2) -->Server2 --> (VLAN3)-->Server3-->(VLAN4)
When one server fails, for example, Server2, the sequence has to be:
(VLAN1)-->Server1-->(VLAN2)-->Server3-->(VLAN4)
How do I achieve that by a swiitch?
Thank you in advance.
Best regards,
Giuseppe

Hi Reza,
thank you for your answer. It is a good solution but I have only two NICs where in one of these the traffic flows inbound, for example, on VLAN 1 and in egress on the other NIC belonging to another VLAN, for example, VLAN 2.
Now, we have 4-5 server configured in this fashion. When a server fails I need to preserve the sequence of the traffic flow so it is continuous.
I have to know I could implement the dynamic VLAN replacement so I could preserve the right traffic flow.
The NICs are particular cards that work only at level 2 (MAC address).
I hope I explain correctly and if you have an idea I will be glad.
Thanks.
Regard,
Giuseppe

Similar Messages

  • Failure of server APACHE bridge::No backend server available for connection

    All,
    I have an env: Browser -> OHS -> WLS(Apex Listener) -> Oracle DB.
    If any SQL run for more than 5 mins, i get the below error.
    Failure of server APACHE bridge:
    No backend server available for connection: timed out after 10 seconds or idempotent set to OFF or method not idempotent.The only error i get is from the OHS's log
    [2013-04-03T06:45:57.2946-05:00] [OHS] [ERROR:32] [] [core.c] [host_id: aa050] [host_addr: 121.146.60.102] [tid: 1260554560] [user: oracle] [ecid: 004qNDJn1du7m3KaETn3ES0004Ll00001T] [rid: 0] [VirtualHost: my.team.com:443]  ap_proxy: trying POST /pls/apex/wwv_flow.show at backend host 127.0.0.1/7003; got exception 'Backend Server not responding'; state: reading status line or response headers from WLS (wrote? Y read? N); not failing over because method not idempotent, referer: https://my.team.com/pls/apex/f?p=4500:1003:16571271664493::NO:::Is there a timeout variable other than the below in WLS?
    Session Timeout (in seconds): 3600 .
    TIA,
    JJ

    Regardless of the version, this is not exactly a "Forms" failure. This is an issue between OHS and WLS. Basically it means that OHS (via mod_wl_ohs) was unable to communicate with WLS_FORMS (or whichever managed server you are trying to access). Most often this means the managed server is not running or not responding. If you believe it is running and is responsive (test by hitting it directly) then the problem is probably related to your installation. Generally, if you have not properly configured your networking before you installed WLS and FMw, then this can occur. For example, on Windows machine which do not have static IP addresses, the Installation Guide instructs you to install the Windows loopback adapter and configure it. If you did not do this, OHS likely will not be able to contact WLS_FORMS.
    You can test what I have described above by attempting to access WLS_FORMS directly. For example:
    http://yourHost:9001/forms/frmservlet
    If that works, the issue is probably related to a net config issue.
    If you have access to MyOracle Support, refer to these notes:
    <blockquote><li>Failure Of Server APACHE Bridge After Running Report From Forms 11gR2 on Windows 64-bit platform (Doc ID 1457845.1)
    <li>Oracle Fusion Middleware 11g - Troubleshooting the Error "Failure of server APACHE bridge" (Doc ID 1304095.1)</blockquote>
    The product Documentation Library can be found here:
    http://docs.oracle.com/cd/E24269_01/index.htm

  • There is no server available at the address you entered, codes: 25294, 9848

    About a month ago I rebooted the server and after that Server Admin hasn't worked. It says always: "There is no Server available at the address you entered".
    In /var/log/system.log:
    Jul 22 11:58:51 mail servermgrd[14205]: SecIdentitySearchCopyNext returned -25294.
    Jul 22 11:58:51 mail servermgrd[14205]: Got error -9848 for SSLHandshake
    Jul 22 11:58:51 mail servermgrd[14205]: Exception in threadListen: Socket: Connect failed
    From http://developer.apple.com/documentation/Security/Reference/certifkeytrustservic es/Reference/reference.html:
    errSecNoSuchKeychain –25294 The keychain does not exist.
    From http://developer.apple.com/documentation/security/Reference/secureTransportRef/R eference/reference.html:
    errSSLBadConfiguration –9848 A configuration error occurred.
    I have also bootable backup on another disk in which Server Admin is working. I have compared files from /etc, /Library/Preference and /var/servermgrd without finding really relevant differences. Are there other places I should seek?
    On some point I have changed host name. Could that cause certificate error in this case? I have checked with "sudo changeip -checkhostname" that names matches.
    I have tried making servermgrd to use regular connection instead of SSL by editing /Library/Preferences/com.apple.servermgrd.plist. After changing settings, I have killed or unloaded/loaded servermgrd and tested with lsof that proper port is working. But I guess Server Admin doesn't even try to connect to port 687. Is it possible to force Server Admin to connect port 687. E.g. writing "localhost:687" as address didn't worked.
    I have tried creating servermgrd.conf, ssl.crt/ and ssl.key/ to /etc/servermgrd/ even thought they weren't there originally.
    I have tried connecting with many different IPs and DNS names and done as instructed here http://support.apple.com/kb/TS2757. According lsof, ports 678 and 660 are not in use normally.
    I have tried moving/trashing /var/servermgrd/ and ~/Library/Preferences/com.apple.ServerAdmin.plist.
    I have tried stopping ipfilter.
    Is it possible find out that which certificate servermgrd is trying to use?
    What else I could try? The server is currently running email and web services among other things with many users, so therefore I can't try too rough methods.

    Little progress maybe...
    I tested Server Admin of the working backup while using "sudo fs_usage -f filesys <PID>".
    When I did same with the actual nonworking server I noticed this difference:
    18:53:09 statfs private/var/root/Library/Keychains 0.000010 servermgrd
    18:53:09 open private/var/root/Library/Keychains>>>>>>>>>> 0.000008 servermgrd
    Path /var/root/Library/Keychains does not exists and backup system doesn't seems to try to use it. I suspect that "errSecNoSuchKeychain –25294 The keychain does not exist" occurs because of this.
    Any hints to fix this?

  • Error: -26  Detail: no valid destination server available for '!ALL' rc=14

    Hello,
    i can access portal, but when i click on a link i receive the error message bellow:
    500 Dispatching Error
    Error: -26
    Version: 7000
    Component: HTTP_ROUTE
    Date/Time: Thu May 27 11:18:55 2010 
    Module: http_route.c
    Line: 3139
    Server: PCLIWDI1_WDP_01
    Error Tag:
    Detail: no valid destination server available for '!ALL' rc=14
    u00A9 2001-2009, SAP AG 
    the web dispatcher is UP,
    on instance profile on web dispatcher , i have data bellow:
    SAPSYSTEMNAME = WDP
    SAPGLOBALHOST = PCLIWDI1
    SAPSYSTEM = 01
    INSTANCE_NAME = W01
    DIR_CT_RUN = $(DIR_EXE_ROOT)\$(OS_UNICODE)\NTAMD64
    DIR_EXECUTABLE = $(DIR_CT_RUN)
    Accesssability of Message Server
    rdisp/mshost = pclieci1.oranginagroup.net
    ms/http_port = 8080
    Configuration for large scenario
    icm/max_conn = 16384
    icm/max_sockets = 16384
    icm/req_queue_len = 6000
    icm/min_threads = 100
    icm/max_threads = 250
    mpi/total_size_MB = 500
    mpi/max_pipes = 21000
    SAP Web Dispatcher Ports
    ##icm/server_port_0 = PROT=HTTP,PORT=1080
    Capgemini - RGC. SSL
    DIR_INSTANCE = G:\usr\sap\secudir
    DIR_HOME = G:\usr\sap\WDP\W01\work
    icm/server_port_0 = PROT=HTTP,PORT=8001
    icm/server_port_1 = PROT=HTTPS,PORT=1080
    icm/HTTPS/verify_client = 0
    wdisp/ssl_encrypt = 0
    wdisp/add_client_protocol_header = true
    wdisp/shm_attach_mode = 6
    ssl/ssl_lib = G:\usr\sap\secudir\sapcrypto.dll
    ssl/server_pse = G:\usr\sap\secudir\SAPSSLS.pse
    is/http/default_root_hdl = abap
    #icm/HTTP/redirect_0 = PREFIX=/sap/bc/gui/sap/its/webgui, HOST=pclieci1.oranginagroup.net, PORT=1080
    i have the same error when i lunch https://WDISERV:1080
    Thank's for help

    Following the check i did, please find out the result:
    C:\Users\wdpadm>sapwebdisp pf=G:\usr\sap\WDP\SYS\profile\WDP_W01_PCLIWDI1 -check
    config
    Checking SAP Web Dispatcher Configuration
    =========================================
    maximum number of sockets supported on this host: 32768
    Server info will be retrieved from host: pclieci1.oranginagroup.net:8080 with pr
    otocol: http
    Checking connection to message server...OK
    Retrieving server info from message server...OK
    Message Server instance list:
    ------++--
    +
    instance name
    hostname
    HTTP port
    HTTPS port
    ------++--
    +
    ------++--
    +
    ERROR: no servers in list
    Check ended with 1 errors, 0 warnings

  • I live in the country and there is no High speed available, How does Firefox for desk top work with Dial up ???

    I live in the country and there is no High speed available, How does Firefox for desk top work with Dial up ??? I have a great dell computer, Dimention 8400. Before I install firefox I want to know for no waste of time for either party..

    Unless you enabled Find My iPad on it before it was stolen then there isn't any way to locate it. If you did enable it then you could try locating it either via http://icloud.com on a computer or Find My iPhone on another device - but that will only work if it's connected to a network and the device hasn't already been wiped and/or Find My iPad disabled on it.
    If it was stolen then you should report it to the police. You should also change your iTunes account password, your email account passwords, and any passwords that you'd stored on websites/emails/notes etc.
    If it was never registered to your account then it won't appear on your support profile : https://supportprofile.apple.com/
    The only other ways to find it that I know of (apart from on the actual device) are via the packaging, the backup on a computer's iTunes : http://support.apple.com/kb/HT4061

  • How to check Server availability status in jsf?

    how to check Server availability status in jsf ?

    Do "something" that would cause the server to respond; fetch a webpage, call a webservice, whatever. If it doesn't work the server isn't there, or is in a broken state.

  • Dashboard error u2013 u201CThere is no AA Analytics Server available. Contact your

    Hi,
    We are using BO XI R3.1 version, and we never used the dash board here . Now when we are trying to access dashboard in Infoview  its giving error as u2013
    There is no AA Analytics Server available. Contact your Business administrator to verify status. AA2213
    Even when we are trying to see settings Dashboard and Analytics setting same message appears.
    We tried dashboard related server restart and also all server restart, but still problem exists.
    Please advice.

    Hi,
    We have servers named Dashboard Analytics Server and Dashboard Server related to dashboard. Both are up and running.
    All other servres under Performance management are up and running.
    We donot find AA Analytics server in server list, is this any specific server?

  • Leopard Server Admin Fails "there is no server available"

    My Leopard Server has been running fine for months, uprgraded to 10.5.6 without difficulty a few weeks ago. Today, the Server Admin application is throwing up an error "there is no server available at the address you entered", with a box to delete it or save it.
    Huh?
    The server seems to be still running fine - mail continues to be delivered.
    I note that this error has been reported before here and elsewhere, but there doesn't seem to be any comprehensive solution.
    I would appreciate any help.

    Hi
    For the lack of any further information it's difficult to say? It could be anything or nothing at all? Have you tried a restart? Sometimes you'll see this error message if there's a problem with your keychains? You're more likely to see it if there is a problem with your DNS Service. Although not definitive does Workgroup Manager have a problem? Can you connect to the Server using Server Admin remotely?
    You should be able to remove the server from the list and re-add it. You can use its .local name, its loopback address, its IP address or its FQDN. Whichever one its having a problem with use one of the other methods instead. Any or all of them should work.
    To remove keychains you could use Keychain Access. Keychain Access > Edit > Keychain List. Select the ones you want and click the 'minus' symbol. I tend to not bother and remove them from /User/Home/Library/Keychains as well as /Library/Keychains followed by a restart. You can also 'reset' how Server Admin presents its interface on launch by removing its .plist from /Users/Home/Library/Preferences. Quit out if it first. Take the com.apple.ServerAdmin.plist to the trash, empty it and re-launch Server Admin. You might have to restart the server. There's a similar .plist for Workgroup Manager.
    If you can't connect at all then you are probably looking at a problem with DNS Services. Can the server resolve itself to itself? Issuing host or nslookup for its fully qualified domain name followed by its IP Address should present a clearer picture. You could also issue:
    sudo changeip -checkhostname
    As this checks the validity of the Server's DNS. If it returns "DNS hostname is unavailable, please run the repair tool" then consult changeip's manual page. If it returns "the names match, there is nothing to change" then start looking at the physical structure of the network itself. An intermittent fault with the patch cable perhaps or Switch port?
    Tony

  • SCOM 2012 R2 Management Servers and SQL Server Availability Groups

    My team is in the middle of rolling out a brand new install of System Center Operations Manager 2012 R2.
    I have set up a SQL Server Availability group that is spread across multiple subnets and installed the initial management server per
    here. 
    As I have gone through attaching new management servers, I have noticed disturbing behavior.  When the AG fails over to another node, the management servers will lose connectivity unless I either recycle the service or it fails back to the original
    node.  This is not a security issue as I have set up permissions.  It says it cannot connect to the database anymore at all.
    Has anyone else seen this behavior?  Is there a setting I am missing somewhere?
    Thanks for your help.
    Dale

    Hi Dale,
    What about ApplicationIntent\Readonly?
    http://msdn.microsoft.com/en-us/library/hh205662(v=vs.110).aspx
    Still thinking about DNS, may be this could be for your case:
    http://www.sqlservercentral.com/Forums/Topic1449216-2799-1.aspx
    Natalya

  • Offline installer for CC Desktop / Server availability issues.

    This is a follow up to the issue described here: http://forums.adobe.com/message/5620240#5620240
    As we have to install CC Desktop on each of the systems deploying CS6 packages, I'm looking for an offline installer for it. Is such a thing available?
    The reasons I ask are that A) There's no guarantee that the machine will have internet access during the installation. and B) Half the time I run it on a desktop, I get an error message telling me "The remote server is not responding in a proper manner"; my response to which was similarly improper...
    My "Deployment" such as it is now relies on users copying the file form a network share on to their desktops, running it individually and hoping that the server is online. Not fun when you've got 50 artists across 5 studios wanting to get these packages installe; and that's only so I can proceed to the wheel-of-fortune that is the AAMEE-produced MSI package.
    Are these server availability issues commonplace? Is this just one of those things that afflicts all software launches that rely too heavily on online components?

    Hi Terry,
    If it's helpful, you can find and use all the original offline installers for all Creative Cloud and CS6 tools (including the CC Desktop App) here:
    Adobe CC Direct Download Links
    and/or
    Adobe CS6 Direct Download Links
    If you have those files in hand then you can install the free trials anywhere while being offline.  In most cases the Internet is used to activate the software longer-term, although Adobe still provides procedures for offline activation:
    Activate your software offline
    If the computer on which your software is installed cannot connect to the Internet or to Adobe’s activation servers, you can activate your software offline.
    For instructions, visit www.adobe.com/go/getactivated.

  • Upgrade Xserve G4 from 10.3 to 10.4 Serveradmin "No server available at..."

    After updating to 10.4 server I cant connect to my Xserve via server admin it says there is "no server available at the address you specified"!! On the other hand afp is runnning because my users can log in, and i get all my sharepoints as before....

    I had a look at system.log and found this:
    Jun 27 14:06:21 NEWGalaxia servermgrd: servermgr_dns: no name available via DNS for 192.168.2.2
    Jun 27 14:06:21 NEWGalaxia servermgrd: servermgr_dns: no hostname set and unable to detect via DNS, services may not function properly - use changeip to repair
    Jun 27 14:06:22 NEWGalaxia launchd: com.apple.servermgrd: exited abnormally: Bus error
    Jun 27 14:06:22 NEWGalaxia launchd: com.apple.servermgrd: respawning too quickly! throttling
    Jun 27 14:06:22 NEWGalaxia launchd: com.apple.servermgrd: too many failures in succession
    Jun 27 14:06:22 NEWGalaxia crashdump[775]: servermgrd crashed
    Jun 27 14:06:22 NEWGalaxia crashdump[775]: crash report written to: /Library/Logs/CrashReporter/servermgrd.crash.log
    sure looks quite bad

  • Is Flash Media Server available as an AMI in Amazon Web Services' new Sydney region?

    Is Flash Media Server available as an AMI in Amazon Web Services' new Sydney region?
    Thanks,
    Blake

    Any ETA on this??? Currently using Flash Media Server on EC2 in Singapore. Would love to know when I'll be able to use in Australia

  • Which are the third paty Converter Server available in Market

    Hi,
    I would like to convert my all drawing(dwg) & office(doc,xls,ppt) files in to PDF.
    I can achive this functionality by sap converter server or I required third party converter server.
    If third party then which are the third party conversion server available in market.
    Regards,
    Sunny
    Edited by: Sunny on Sep 19, 2008 12:36 AM

    Hi Sunny,
    I can strongly recommend CIDEON's Conversion Engine.
    It converts all your required data formats into PDF. It supports all major CAD-Systems (AutoCAD, Inventor, SolidWorks, Solid Edge, Microstation, Pro/E,...) and MS Office Applications.
    It has extended monitoring capabilities and it is very stable and reliable due to not using the spool system.
    Regarding the converter to PDF you have different options.
    Create PDF with:
    - Adobe Professional (Distiller)
    - Ghost Script
    - CIDEON PDF Writer
    Find more information here:
    [CIDEON Conversion Engine|http://www.cideon.de/cideon/en/so/produkte/konvertierung/index.php]
    Best Regards
    Edited by: Dirk Hille on Nov 21, 2008 6:52 PM

  • Very high server load

    Hi,
    I have run into an issue with very high server load on a OES11sp2 server.
    After a lot of troubleshooting we found that the cause was the adminusd process.
    Last month i patched the server and we upgraded to novell-nss-4.16.4940-0.5.9, this contains the new adminusd component.
    Specifically we found that it was related to volume space restrictions.
    After turning volume space restrictions off the load of the server dropped from 10+ down to 0.66 (atm).
    The strange thing was that adminusd wasn't showing up in top directly, but the us% was very high.
    The problem only pops up when a lot of people are logged in and drops off again when the number is low.
    Any idea to what is going on?
    Cheers,
    Frank

    hi all,
    I checked the environment again,
    then came to know that my SAN is not connected through FIbre Channel or any other faster channel to the Server and its connected through 100MBPs line... this was causing the slow and also there was a lot IO wait in my Oracle VM server.
    Thanks,
    Sri.

  • Is high availabilty available with B1 ?

    Hi,
    We've got users based around the world who connect to B1 at our UK base. I cannot provide 24 hour support in case of system downtime so I'm interested to find out what sort of options are available to provide High Availabilty/Redundancy to our SAP installation?
    Thanks

    Hi,
    Its normal to have a system down but you can make prevent or minimize this situation.
    1. In your SQL Server you could try to use the RAID.
    2. Frequent backup of the database.
    3. You may use SQL SERVER distributed function. This is using 2 or more SQL Server but
        using 1 database.
    4. Daily monitoring.
    5. A spare or extra computer that have already SQL Server installed and ready to attached
        or restore the recovered database.
    6. Separate the APPLICATION to DATABASE Server,
    Hope it will help.
    THanks.
    CLint

Maybe you are looking for

  • AirPort Express- The worst product I have ever purchased

    I moved from Microsoft to Apple because I thought it was the right thing to do...when I say that I mean I am not clever and just realized Apple is sexier kit and is more powerful...however takes some getting used to. I installed my new IMAC 24 inch w

  • How to transport records of custom table in SAP BI?

    Hello, I creeated a custom table and entered some records there. Now I would like to transport it to production. When I select the records and press 'transport records' the system doesnt allow me to save it under transport request. The following erro

  • Selecting Multiple Images to Copy - Fragmented Image

    Hello! I made a pdf out of a powerpoint presentation on a friend's windows computer. I am now trying to extract an image that I lost while editing on my computer. The problem I have run into is that the image was fragmented into multiple pieces in th

  • Photoshop CC Extension disabled/not working

    I downloaded/paid for Adobe Photoshop CC 2014 Release. Everything is working perfectly fine expect for the Adobe Extension/Exchange Panel is greyed out and not working. I tried many things, I tried to install the adobe exchange panel CC in extension

  • Variables & Processing Types

    Hi, I am looking for variables & Processing types.Could any one guide me on Variables & Processing types in BI 7.0. Thanks in advance! Regards, Vijji