Load Balancing not happening

Hi Group,
We have to portal server instances installed on two different solaris machines.Infront of this sitting 4 WebSEAL boxes.Now some times when a user runns certain scripts to log on to the portal, we have huge number of sessions getting creted on one of the portal servers and the load is not getting balanced.Can any body let me know why does this happen?Has it got anything to do with the portal server or the way web seals route the requests to the portal server?

Similar Messages

Load balancing not happening on UDQ in weblogic 11g

Hi Team,
I have a 2 clusters with two managed servers each on different machines
Cluster A(On machine 1)
Managed server A (on machine 1)
Managed server B(on machine 2)
I have created 2 JMS servers
JMS Server A on Managed server A
JMS Server Bon Managed server B
and a JMS module on Cluster A
and JMS connection factory targeted on Cluster A and a uniform distributed queue targeted on JMS server A and JMS Server B
But load balancing is not happening only one managed server is loaded at a time.. Using weblogic 11(aka 10.2.3)
Tried disabling server affinity but it did not help ...Can any one please let me know how to fix this?

Hi,
When you say load is not balanced and reaching only one managed server.
I assume both the UDD's targets are reachable and are visible in JNDI tree ?
also , what kind of application is it - i,e is it clustered app that would be seen as consumers on each UDQ ?
take a look at the app and check if its clusterred . along with that also take a look at the number of consumers on UDQ instances.
Let me know what you find.
Sri

Load balance not happening in BGP

Dear Friends,
As per I know local BGP process may implement equal-cost load-balancing to the paths that:
Have the same set of path attributes up to the MED (weight, Local Preference, Origin, MED)
Are of the same type (both learned via iBGP or eBGP)
Have the same IGP cost to reach their NEXT_HOP IP address
If the above conditions are met andmaximum-paths [ibgp]is configured under the BGP process, BGP will install multiple equal-cost routes into the local RIB and use them for load-balancing. We call the above condition as load-balancing conditions for BGP.
As all the above criteria are matched still BGP is not doing load balance. Please find below routing table:
R1:
R1#sh ip bgp
BGP table version is 4, local router ID is 40.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*>i192.168.1.0      20.1.1.2                 0    100      0 i
* i                        30.1.1.1                 0    100      0 i
R1#sh ip route
Gateway of last resort is not set
     20.0.0.0/24 is subnetted, 1 subnets
R       20.1.1.0 [120/1] via 10.1.1.2, 00:00:03, FastEthernet0/0
     40.0.0.0/24 is subnetted, 1 subnets
C       40.1.1.0 is directly connected, FastEthernet0/1
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
B    192.168.1.0/24 [200/0] via 20.1.1.2, 00:12:01
     30.0.0.0/24 is subnetted, 1 subnets
R       30.1.1.0 [120/1] via 40.1.1.2, 00:00:15, FastEthernet0/1
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 10.1.1.2 remote-as 100
neighbor 40.1.1.2 remote-as 100
maximum-paths 2
no auto-summary
Please help....!!!!!!!   why BGP is not load balancing here????
R1#traceroute 192.168.1.1
Type escape sequence to abort.
Tracing the route to 192.168.1.1
1 10.1.1.2 88 msec 60 msec 28 msec
2 20.1.1.2 104 msec 56 msec 120 msec
Regards,
Sanjib

Dear Jon,
Thank you so much.
When I changed the configuration BGP is now loadbalancing. But in configuartion Max-path showing as 1 instead of 2.
R1#sh ip pro | sec bgp
Routing Protocol is "bgp 100"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
IGP synchronization is disabled
Automatic route summarization is disabled
Neighbor(s):
    Address          FiltIn FiltOut DistIn DistOut Weight RouteMap
    12.1.1.2
    13.1.1.3
Maximum path: 1
Routing Information Sources:
    Gateway         Distance      Last Update
    13.1.1.3             200      00:01:12
    12.1.1.2             200      00:02:15
Distance: external 20 internal 200 local 200
Regards,
Sanjib

RV042 Load Balancing not working correctly?

We have an RV042 on firmware version 1.3.13.02 and 2 ISPs:
WAN1 = Telepacific T1
1.5Mbps down and 1.5Mbps up
WAN2 = AT&T U-Verse
12Mbps down and 5Mbps up
I have it set to Load Balance, Primary WAN = WAN2
Network Service Detection enabled, only pinging the Remote Host of 4.2.2.2 and set to Generate Log
Bandwidth is set to:
WAN1 = 1000Kbps upstream & downstream
WAN2 = 5040Kbps upstream & 12000Kbps downstream
It seems to pick WAN1 a lot of the time. Do I have something setup wrong?

Ok, so what do you recommend? To setup binding for ports important to direct over say… WAN1 (my fast access) shall I also keep the bandwidth management set up as is, example:
For me it’s confusing because this config appears to be clear to me that has to control traffic the way I want .
Thanks for your response.
H Aragon
De: jasbryan
Enviado el: lunes, 20 de febrero de 2012 03:18 p.m.
Para: HECTOR MANUEL ARAGON
Asunto: - Re: RV042 Load Balancing not working correctly?
Home
Re: RV042 Load Balancing not working correctly?
created by jasbryan in Small Business Routers - View the full discussion

Load balancing not functioning

Is load balancing actually supposed to load balance? I have two servers in the failover group, with 125 DTUs on one and 0 on the second one. The documentation is a little vague on this and it says that the load balancing will only take effect if one server goes down (meaning if you have three equal servers and one drops the new connections will be distributed across the two remaining servers).
Is there a way to balance between my two Sun servers?

Yes, load balancing is supposed to balance load. This is not restricted to the case of failover.
But load balancing happens only at certain times in the lifecycle of connections/sessions. It can occur when a DTU connects, when a smart card is inserted or removed, when a user logs out or when a kiosk session exits. For a new connection or token, it obviously occurs only when there is not yet a (non-"idle") session for the connecting token. Load balancing happens before the login prompt is shown, so if the client sits showing a login prompt for a long time, it will not be rebalanced when the user actually turns up and logs in. (Only with NSCM there may be load balancing after the user has entered her name.) Load balancing does not happen, if the user never logs out or if a kiosk session never exits. This includes cases where a kiosk session loops internally between user sessions instead of exiting - that is one of the reasons for the '-t timeout' option of the Sun Ray Windows Connector kiosk session type.
Sessions may accumulate on one server as you describe, if you don't use mobile sessions (smart cards or NSCM) and your users rarely log out or your kiosk session never exits. You may easily get into this situation, if one server is down or slow to come up when all the DTUs connect after a cold (re)start or other downtime.
Other reasons why loadbalancing may fail are:
- The server group isn't formed properly. The servers page in the admin GUI or the utgstatus(1M) command must show all servers in the group as trusted, online, up and available. (This must be true from either server.)
- You forgot to include the -g option to utpolicy(1M), when setting server policy on the command line.
- You manually edited the auth.props(4) file and disabled it.

Load balancing not happending but fail over is for Read only Entity beans

          The following are the configuration.
          Two NT servers with WL5.1 sp9 having only EJBs(Read only entity beans)
          One Client with WL5.1 sp9 having servlet/java application as
          EJB client.
          I am trying to make a call like findbyprimarykey in one of the
          entity bean. I could see the request is being directed only to the one of the
          server always. When I bring that server, fail over is happening to the other server.
          Here are the settings I have in the ejb-jar.xml :
                    <entity>
                         <ejb-name>device.StartHome</ejb-name>
                         <home>com.wl.api.device.StartHome</home>
                         <remote>com.wl.api.device.StartRemote</remote>
                         <ejb-class>com.wl.server.device.StartImpl</ejb-class>
                         <persistence-type>Bean</persistence-type>
                         <prim-key-class>java.lang.Long</prim-key-class>
                         <reentrant>False</reentrant>
                         <resource-ref>
                              <res-ref-name>jdbc/wlPool</res-ref-name>
                              <res-type>javax.sql.DataSource</res-type>
                              <res-auth>Container</res-auth>
                         </resource-ref>
                    </entity>
          Here are the settings I have in the weblogic-ejb-jar.xml.
          <weblogic-enterprise-bean>
                    <ejb-name>device.StartHome</ejb-name>
                    <caching-descriptor>
                         <max-beans-in-cache>50</max-beans-in-cache>
                         <cache-strategy>Read-Only</cache-strategy>
                         <read-timeout-seconds>900</read-timeout-seconds>
                    </caching-descriptor>
                    <reference-descriptor>
                         <resource-description>
                              <res-ref-name>jdbc/wlPool</res-ref-name>
                              <jndi-name>weblogic.jdbc.pool.wlPool</jndi-name>
                         </resource-description>
                    </reference-descriptor>
                    <enable-call-by-reference>False</enable-call-by-reference>
                    <jndi-name>device.StartHome</jndi-name>
               </weblogic-enterprise-bean>
          Am I doin any mistake in this?
          Any one's help is appreciated.
          Thanks
          Suresh


we are using 5.1
          "Gene Chuang" <[email protected]> wrote in message
          news:[email protected]...
          > Colocation optimization occurs if your client resides in the same
          container (and also in the same
          > EAR for 6.0) as your ejbs.
          >
          > Gene
          >
          > "Suresh" <[email protected]> wrote in message
          news:[email protected]...
          > > Ok....the ejb-call-by-reference set to true is making the call to one
          server
          > > only. i am not sure why it is. I removed the property name and it
          works.
          > > Also I have one question, in our prduct environment, when i cache the
          ejb
          > > home it is not doing the load balancing. can any one help me for that.
          > > thanks
          > >
          > > Mike,
          > > From the sample pgm I sent, even from single client calls get load
          > > balanced.
          > >
          > > Suresh
          > >
          > >
          > > "Gene Chuang" <[email protected]> wrote in message
          > > news:[email protected]...
          > > > In WL, LoadBalancing will ONLY WORK if you reuse your EJBHome! Take
          your
          > > StartEndPointHome lookup
          > > > out of your for loop and see if this fixes your problem.
          > > >
          > > > I've seen this discussion in ejb-interest, and some other vendor
          (Borland,
          > > I believe it is), brings
          > > > up an interesting point: Clustering and LoadBalance is not in the
          J2EE
          > > specs, hence implementation
          > > > is totally up to the vendor. Weblogic loadbalances from the remote
          > > interfaces (EJBObject, EJBHome,
          > > > etc..), while Borland loadbalances from JNDI Context lookup.
          > > >
          > > > Let me suggest a third implmentation: loadbalance from BOTH Context
          > > lookup as well as stub method
          > > > invocation! Or create a smart replica-aware list manager which
          persists
          > > on the client thread
          > > > (ThreadLocal) and is aware of lookup/evocation history. Hence if I do
          the
          > > following in a client
          > > > hitting a 3 node cluster, I'll still get perfect round-robining
          regardless
          > > of what I do on the
          > > > client side:
          > > >
          > > > InitialContext ctxt = new InitialContext();
          > > > EJBHome myHome = ctxt.lookup(MY_BEAN);
          > > > myHome.findByPrimaryKey(pk); <== hits Node #1
          > > > myHome = ctxt.lookup(MY_BEAN);
          > > > myHome.findByPrimaryKey(pk); <== hits Node #2
          > > > myHome.findByPrimaryKey(pk); <== hits Node #3
          > > > myHome = ctxt.lookup(MY_BEAN);
          > > > myHome.findByPrimaryKey(pk); <== hits Node #1
          > > > ...
          > > >
          > > >
          > > > Gene
          > > >
          > > > "Suresh" <[email protected]> wrote in message
          > > news:[email protected]...
          > > > > Mike ,
          > > > >
          > > > > Do you have any reasons for the total number of machines to be 10.
          > > > >
          > > > > I tried with 7 machines.
          > > > >
          > > > >
          > > > > Here is my sample client java application running individual in the
          > > seven
          > > > > machines.
          > > > >
          > > > > StartEndPointHome =
          > > > > (StartEndPointHome)ctx.lookup("dev.StartEndPointHome");
          > > > > for(;;)
          > > > > {
          > > > > // logMsg(" --in loop "+currentTime);
          > > > > if (currentTime > nextRefereshTime)
          > > > > {
          > > > > logMsg("****- going to call");
          > > > > currentTime=getSystemTime();
          > > > > nextRefereshTime=currentTime+timeInterval;
          > > > > StartEndPointHome =
          > > > > (StartEndPointHome)ctx.lookup("dev.StartEndPointHome");
          > > > > long rndno=(long)(Math.random()*10)+range;
          > > > > logMsg(" going to call remotestub"+rndno);
          > > > > retVal =
          > > > >
          > >
          ((StartEndPointHome)getStartHome()).findByNumber("pe"+rndno+"_mportal_dsk36.
          > > > > mportal.com");
          > > > >
          > > > > logMsg("**++- called stub");
          > > > > }
          > > > >
          > > > >
          > > > >
          > > > > The range value is different for each of the machines in the
          cluster.
          > > > >
          > > > > If the first request starts at srv1, all request starts hitting the
          same
          > > > > server.
          > > > > If the first request starts at srv2, all request starts hitting the
          same
          > > > > server.
          > > > >
          > > > > I have the following for the url , user and pwd values for the
          context
          > > .
          > > > >
          > > > > public static String url="t3://10.11.12.14,10.11.12.117:8000";
          > > > > public static String user="guest";
          > > > > public static String password="guest";
          > > > >
          > > > >
          > > > >
          > > > > It would be great if you could help me.
          > > > >
          > > > > Thanks
          > > > > suresh
          > > > >
          > > > >
          > > > > "Mike Reiche" <[email protected]> wrote in message
          > > > > news:[email protected]...
          > > > > >
          > > > > > If you have only one client don't be surprised if you only hit one
          > > server.
          > > > > Try
          > > > > > running ten different clients and see if the hit the same server.
          > > > > >
          > > > > > Mike
          > > > > >
          > > > > >
          > > > > > "suresh" <[email protected]> wrote:
          > > > > > >
          > > > > > >The following are the configuration.
          > > > > > >
          > > > > > > Two NT servers with WL5.1 sp9 having only EJBs(Read only entity
          > > beans)
          > > > > > >
          > > > > > > One Client with WL5.1 sp9 having servlet/java application as
          > > > > > > EJB client.
          > > > > > >
          > > > > > >
          > > > > > >I am trying to make a call like findbyprimarykey in one of the
          > > > > > >entity bean. I could see the request is being directed only to
          the
          > > one
          > > > > > >of the
          > > > > > >server always. When I bring that server, fail over is happening
          to
          > > the
          > > > > > >other server.
          > > > > > >
          > > > > > >
          > > > > > >Here are the settings I have in the ejb-jar.xml :
          > > > > > > <entity>
          > > > > > > <ejb-name>device.StartHome</ejb-name>
          > > > > > > <home>com.wl.api.device.StartHome</home>
          > > > > > > <remote>com.wl.api.device.StartRemote</remote>
          > > > > > > <ejb-class>com.wl.server.device.StartImpl</ejb-class>
          > > > > > > <persistence-type>Bean</persistence-type>
          > > > > > > <prim-key-class>java.lang.Long</prim-key-class>
          > > > > > > <reentrant>False</reentrant>
          > > > > > > <resource-ref>
          > > > > > > <res-ref-name>jdbc/wlPool</res-ref-name>
          > > > > > > <res-type>javax.sql.DataSource</res-type>
          > > > > > > <res-auth>Container</res-auth>
          > > > > > > </resource-ref>
          > > > > > > </entity>
          > > > > > >
          > > > > > >
          > > > > > >Here are the settings I have in the weblogic-ejb-jar.xml.
          > > > > > >
          > > > > > ><weblogic-enterprise-bean>
          > > > > > > <ejb-name>device.StartHome</ejb-name>
          > > > > > >
          > > > > > > <caching-descriptor>
          > > > > > > <max-beans-in-cache>50</max-beans-in-cache>
          > > > > > > <cache-strategy>Read-Only</cache-strategy>
          > > > > > > <read-timeout-seconds>900</read-timeout-seconds>
          > > > > > > </caching-descriptor>
          > > > > > >
          > > > > > > <reference-descriptor>
          > > > > > > <resource-description>
          > > > > > > <res-ref-name>jdbc/wlPool</res-ref-name>
          > > > > > > <jndi-name>weblogic.jdbc.pool.wlPool</jndi-name>
          > > > > > > </resource-description>
          > > > > > > </reference-descriptor>
          > > > > > > <enable-call-by-reference>False</enable-call-by-reference>
          > > > > > > <jndi-name>device.StartHome</jndi-name>
          > > > > > > </weblogic-enterprise-bean>
          > > > > > >
          > > > > > >
          > > > > > >Am I doin any mistake in this?
          > > > > > >
          > > > > > >Any one's help is appreciated.
          > > > > > >Thanks
          > > > > > >Suresh
          > > > > >
          > > > >
          > > > >
          > > >
          > > >
          > >
          > >
          >
          >

Load balancing - what happens if a server goes down?

Hi, Just an academic question.
Assume I have 2 DA servers behind a BIG-IP load balancer, named DA1 and DA2.
If I enable Load Balancing (BIG-IP in my case), what happens to the clients already Connected to DA1 when IP-HTTPS is used?
For example:
Client1 is connected to BIG-IP, which in turn redirect this client to DA1-Server. Assume that DA1-server goes down, what happens with the client then? I assume the Client will be redirected to DA2-server by BIG-IP after some time, meaning it will have to establish
the connection from scratch. Is this correct and roughly how long does it take for the clients to connect to the DA2-Server?
Since IP-HTTPS is using it's own pool and IPv6 prefix per DA server, I assume this will happen? And the DA client1 will receive a new IPv6 address from DA2 ?
Thanks!

Hi,
It depends of the way your Big-IP is checking the servers in your pool.
The client will try to reconnect to the HTTPS interface and still be redirected to server1 until your Big-IP validate that the server1 is not responding and disable it.
And yes, you'll receive a new IPv6 address because each server in a DirectAccess NLB cluster has a specific IPv6 range for the clients.
Gerald

VPN load balancing not working correctly

I have two vpn3030s configured for load balancing. They appear to recognize one another as the correct vpn(priority 10) appears to be the master. The slave however keeps getting an error message i the log "LBSSF master peer[205.172.49.252] is not answering HELLO".
He appears to timeout the master and switch himself to master where he immediately sees the master and goes back to slave. I am not sure the address above is correct for the error message, 205.172.49.252 is the virtual IP shared by both concentrators. I would expect to see hellos sent and received between the two physical interfaces. Any ideas? I am getting a buffer error on the master as well so all this may be memory related. Not sure at this point.
Johnny

it may be due to IP conflict.
also check this bug-id:CSCds70213.
Try these links for more info:
http://www.cisco.com/warp/public/471/vpn3k-conn.html
http://www.cisco.com/warp/public/471/ld_bl_vpn3000_7602.html

BizTalk 2010 Load Balancing Not So Balanced

Ok here's our scenario.
1. One Orchestration running under HostInstanceProcess on 3 servers in the same Groupe using 3 different domain accounts
2. That Orchestration has a reference to Utilities dll, which in turns calls a stored procedure using ADO.net code
3. We run that orchestration, it gets around 2000 de-batched messages and for those 2000 messages it calls that ADO.net code
4. Back in that database we run sp_who to check how many connections are made from each machine, and we find that over 60% connections are always made from one particular BizTalk machine and it's not one off, I've seen it atleast 7 to 8 times, that machine
always has most number of connections, for example if there are 120 connections in total, 80 connections are from Server 1 while rest from others.
5. We put a Max Pool connections in the connection string to 250 (default is 100) but that doesn't make any difference.
6. This interface is facing a lot of connection time outs from the database, hence this investigation is done
7. The same interface works perfectly fine on BizTalk 2006 R2, it's connecting to the same database (so can't be a database issue), it has 2 servers, which make almost same number of connections to the DB when I check with sp_who, so load balancing seems
to working as expected in BizTalk 2006 R2.
So my question, I know BizTalk is supposed to do load balancing in a round robin fashion which should equally distribute the load but in my example in BizTalk 2010, it's not doing that clearly, it's overloading one server with almost 70% of the requests,
what could be the reason for this? Host instances are set-up similarly in all servers. Any help greatly appreciated.
Regards
Syed

BizTalk load balancing works in Round Robin fashion only for the new messages, while in case of instance subscription message will be routed to server holding dehydrated orchestration instance.
So the server having dehydrated instances will receive the correlated response along with the new incoming message.
So you can see one server slightly overloaded.
Thanks,
Prashant
Please mark this post accordingly if it answers your query or is helpful.

Load Balancing not load balancing!

Hi,
We have inherited a 6.3 2005 Q1 installation of Access Manager that has the following problem.
All logons appear to be load balanced correctly however all Policy Agent requests are expressing a preference for one or other node at a time.
For example, during the last 4 days all PA traffic has been hitting Srv01. This leads to an 80/20 balance. This morning on Srv01 an error in the amSession logs appeared on Srv01, "SessionRequestHandler NullPointerException" and from this point on Srv02 started to take the Policy Agent requests. So now the traffic is still 80/20 but wth Srv02 handling the 'lion's share'.
Can anyone point me to documentation that describes in detail how Load Balancing working in the products?
Thanks,
EddieT

Hi,
Sorry I should have been more specific. The error we are seeing has been reported before but no resolution posted.
Thanks.
29/05/2009 08:57:05:119 AM IST: Thread[service-j2ee,11,main]
ERROR: SessionRequestHandler encounterd exception
com.iplanet.sso.SSOException: Session was not obtained.
at com.iplanet.sso.providers.dpro.SSOProviderImpl.createSSOToken(SSOProviderImpl.java:177)
at com.iplanet.sso.SSOTokenManager.createSSOToken(SSOTokenManager.java:305)
at com.sun.identity.session.util.RestrictedTokenContext.unmarshal(RestrictedTokenContext.java:125)
at com.iplanet.dpro.session.service.SessionRequestHandler.processRequest(SessionRequestHandler.java:139)
at com.iplanet.dpro.session.service.SessionRequestHandler.process(SessionRequestHandler.java:112)
at com.iplanet.services.comm.server.PLLRequestServlet.handleRequest(PLLRequestServlet.java:195)
at com.iplanet.services.comm.server.PLLRequestServlet.doPost(PLLRequestServlet.java:147)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:767)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at sun.reflect.GeneratedMethodAccessor203.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
at com.sun.enterprise.web.connector.httpservice.HttpServiceProcessor.process(HttpServiceProcessor.java:234)
at com.sun.enterprise.web.HttpServiceWebContainer.service(HttpServiceWebContainer.java:2124)

RV042 Load Balancing - Not Balancing

I recently purchased an RV042 ver.3 Dual WAN router to replace my ver.2 router. I have found that the load balancing feature is not working like it did in the ver.2 router. Using the Nice Trace app on my iPad, I could see the ver.2 router toggle between the 2 WAN inputs. However, the ver.3 router seems to remain fixed on one of the WAN inputs and never switches to the other. I have upgraded the firmware to the latest v4.2.2.08, but that did not change the load balancing. Has anyone else seen this, and is there a fix?

Is there any particular reason that made you move to the v3 router? If not, put the v2 one back in service. Each version of these routers have different issues, and if you have one working that meets all your needs, just leave it alone.
That being said, have you checked the setting on the v3 to see if it's in failover? Also, are there any protocol bindings? Have you entered the correct amount of bandwidth for each LAN? This affects the load balancing quite a bit.
Huntsville's Premiere Car and Bike e-magazine: www.huntsvillecarscene.com

Load balance not work,still sending new connects to node at100% CPU usage

Trying to verify that Oracle RAC load balancing ( using Load Balance Advisor and services) is working before I recommend changes to a production RAC DB.
Even though I bury (100%CPU usage) one of 2 nodes ,new connections(using a new service I created and set GOAL=SERVICE_TIME and CLB_GOAL = SHORT ) still connecting there.( connection split stays at 50/50) . Any ideas why ?
nodes are HP Itanium ( hpux 11.23) , database version is 10.2.0.5
There are 2 RAC databases on this cluster (one TEST and one Model Office)
srvctl config service -d gdrm -s BATCHQ_GDRM_SERVICEBATCHQ_GDRM_SERVICE PREF: gdrm1 gdrm2 AVAIL:

Hi Dan,
you will have to point all your systems to the Web Dispatcher in the SLD. If you don't do this, the browser will always retrieve the URL to the central instance, bypassing the Web Dispatcher. After you configured as the system to contact the Web Dispatcher, the browser will receive the URL of the Web Dispatcher and send the request to the Web Dispatcher.
On the Web Dispatcher, you'll have to configure an appropriate rule to handle that request. You can use 1 IP and different ports. Each port means another system. Or several virtual IPs and the same/different port.
IP1:8001 -> WD -> BI 1
IP1:8002 -> WD -> BI 2
or
IP1:8001 -> WD -> BI1
IP2:8002 -> WD -> BI2
In this case, you can keep the flexibility of using several backend systems with different names/IPs/Ports and one Web Dispatcher.
For refence, you can consult the following 2 documents:
General Information about how to use Web Dispatcher:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/8105db90-0201-0010-cfbe-ae94d43e2e48
How to implement Web Dispatcher as a single point of entrance
p. 40-42: "
Internet Connectivity to SAP Applications.pdf"
(Unfortunatly, I'm right now not able to locate this document again in SDN, but it exists somewhere. Good luck!)
br,
Tobias

Cisco ace Load balancer not maintaining session persistence

Hi All,
We have observed from the IIS logs on the internal webservers that loadbalancer is not maintaining session persistence for two specific request for the internal servers.
https://123.xyz.com/Webresource.axd
https://123.xyz.com/ScriptResource.axd
Error
Webresource.axd : 500
Scriptresource.axd: 404
Session persistence is maintained for all other requests hitting loadbalancer.
Issue is observerd on hits for these two specified components. WebResource.axd and ScriptResource.axd are Http Handlers used by ASP.NET and Ajax to add client-side scripting to the outgoing web page.
For e.g /WebResource.axd d=t2GXfySdqWmJ-lZSI0KVbw2&t=634868473645172160 is valid for server 1 and return 200 response but the same request is seen on few other servers where the response is 404 even though load balancer cookie is same. This means that if the request for the both the axd contains a valid decrypter and it connects to the right server then the response seen is 200.
The url passed by the user contains d and t parameters when are unique for each user session.
Solution tried:
Accessed website via another VIP without http redirect rule but could not see difference.
Tried to match machine key across all servers : Failed . Could see the ‘d’ value different for each server.
Load balancer VIP :
x.x.x.x
redirect: http > https
SSL Offload : ON
Poool:
WEB1
WEB2
WEB3
WEB4
WEB5
All servers listening on port 80
sticky config:
sticky ihttp-cookie cookie1 vip-1.1.1.1-80-stickyfarm
cookie insert browser-expire
replicate sticky
serverfarm vip-1.1.1.1_80
sticky http-cookie cookie1 vip-farm:1.1.1.1:443
cookie insert browser-expire
replicate sticky
serverfarm farm:1.1.1.1:443
Has anyone else come across similar issue?
Can you plese check if there is any config on cisco ace that will ensure that session persistence is maintained for these 2 requests.
Thank you for all the help.
regards,
Sangram

Hello Sangram,
We would need simultanous packet traces before and after the ACE to get to the root cause of this issue so I would recommend that you open a cisco tac case for more in depth troubleshooing of this issue.
Joel Lamousnery
CCIE R&S - 36768
Engineer, Customer Support
Technical Services

Network Load Balancing not failing over properly

I have 2 MS 2012 servers setup in a NLB unicast configuration, with 2 NICs each on the same subnet. When I take down the second server (and only the second server) the FQDN goes offline. Below are the ipconfigs for each server. Any help
would be greatly appreciated!
Ethernet adapter Data NIC 192.168.220.172:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Intel(R) I350 Gigabit Network
#4
   Physical Address. . . . . . . . . : 6C-3B-E5-B2-48-60
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.172(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Cluster NIC:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Broadcom BCM57810 NetXtreme II
DIS VBD Client) #67
   Physical Address. . . . . . . . . : 02-BF-C0-A8-DC-AA
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.171(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   IPv4 Address. . . . . . . . . . . : 192.168.220.170(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Data NIC 192.168.220.174:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : HP FlexFabric 10Gb 2-port 533FLR-
r #54
   Physical Address. . . . . . . . . : A0-D3-C1-F6-96-08
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.174(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Cluster NIC:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : HP NC523SFP 10Gb 2-port Server Ad
   Physical Address. . . . . . . . . : 02-BF-C0-A8-DC-AA
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.173(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   IPv4 Address. . . . . . . . . . . : 192.168.220.170(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled

Hi MS DEF,
A second network adapter is required to provide peer-to-peer communication between cluster hosts. Please isolate your heartbeat network. With unicast when cluster is connected
to a switch, incoming packets are sent to all the ports on the switch, which can cause switch flooding, please confirm you have setup your switch correct, you can refer the following Cisco Switch related unicast configuration.
The Cisco switch unicast related information:
How to configure Microsoft Network Load Balancing on two switches
https://supportforums.cisco.com/discussion/11918276/how-configure-microsoft-network-load-balancing-two-switches
More information:
Selecting the Unicast or Multicast Method of Distributing Incoming Requests
http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
An Optimal Network Load Balancing (NLB) Configuration
http://blogs.technet.com/b/clint_huffman/archive/2007/10/08/an-optimal-network-load-balancing-nlb-configuration.aspx
Selecting the Unicast or Multicast Method of Distributing Incoming Requests
http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
I’m glad to be of help to you!
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Session replication in oc4j load balancing not working ..

Hi All,
I have windows 2000 machine. I have installed 2 instances of oc4j running on ports 8888 and 8889. I started the loadbalancer.jar in the first instance, started the first oc4j instance and then started the second oc4j instance. I have a common application deployed on both instance1 and instance2 and that is nothing but out famous SessionServlet.
If I access this servlet using http://localhost:80/app/servlet/SessionServlet then I am getting a count as 1 . My loadbalancer that is started from first oc4j instance(running on port 8888) is showing that the request is routed to the first instance. I stopped my first instance1 and then again from the same browser/session/client if I access the same servlet using http://localhost:80/app/servlet/SessionServlet then still I am seeing the count as 1 instead of 2 . At this point my loadbalancer is showing that the request is routed to the second oc4j instance(running on port 8889) since first instance is stopped. So why am I seeing the count as 1 instead as 2.
Also,
1. Is it enough that we start the loadbalancer.jar in the first oc4j instance. What about the loadbalancer.jar in the second oc4j instance ?
2. We all know that Apache HTTP Server runs on port 80. But since I didnt[i]Long postings are being truncated to ~1 kB at this time.

thank you debu, I have one doubt . In the clustering/load-balancing documentation at metalink(doc id: 151717.1) it is said that in point 4b that we should add the tag <cluster-config /> to orion-web.xml file but this file will be created only after the web application is deployed and it is accessed atlest for one time. So is it that we should first deploy the web application and then access it for atlest one time then stop the server and add this tag .. or is there any other way workaround ?

Load Balancing not happening

Similar Messages

Maybe you are looking for