General Hardware Load Balancer question

We are considering setting up a hardware load balancing configuration for Oracle Appliaction Server. I was wondering if anyone has any helpful infroamation about this, i.e. hardware vendor, ease of setup and configuration or any other helpful hints.

As long as they fill your minimum requirements, they are kind of equally good. In my private opinion BIG IP is the best one could get, and I have had least issues with that Load Balancer. It's also very flexible and you can do all possible configurations with it.
However, as I said as long as any Load Balancer fulfills your requirements (balance request, sticky/persistence, SSL termination?) they should be as good as well.
Regards,
Martin

Similar Messages

Lync Server Front End 2 Hardware Load Balancer IP

I currently have the following Setup.
I only have 1 Hardware Load Balanced IP for my Front End Pool.
After running the Lync Planning Tool it actually states that i need 2 Hardware Load Balanced IP, 1 for internal and 1 for external.
My question would be would i be able to configure for mobility and external access with just using 1 Hardware Load Balanced IP?
Because i seem to have problem with connecting to the front end server based on the following scenario.
Without Reverse Proxy Mapping (port 80/443 internet to port 80/443 reverse proxy to port 80/443 lyncpool frontend)
Internal Access (No Issue)
Lync Mobile 2013 App (Can Connect and chat but intermittent connection) *gets disconnected if i access video/audio
Lync Client 2013 Externally (Cannot Connect to Server)
https://meet.domain.com (working)
With Reverse Proxy Mapping (Port 80/443 internet to port 8080/4443 reverse proxy to port 8080/4443 lyncpool frontend)
Internal Access (No Issue)
Lync Mobile 2013 App (Cannot connect)
Lync Client 2013 Externally (Cannot connect)
https://meet.domain.com (Not working)
Would i actually need to have a additional front end pool IP for external access? or can i maintain it as it is?
I do not understand why without the mapping it can work whereas if i do the mapping according to technet article it won't work.
Everything is running windows server 2012 R2 and Lync 2013, Loadbalancer / Reverse Proxy is the same F5 Appliance
Any assistance on this is greatly appreciated.

Hi Greg,
I have been making use of it (https://testconnectivity.microsoft.com/) to test my autodiscover and remote
access.
Like i mentioned it is weird that without doing port mapping from 80/443 to 8080/4443 i was able to pass
the autodiscovery and all but once i changed to the proper steps to do port mapping it stopped working.
and im not using TMG but using a F5 Hardware Reverse Proxy which also happen to be my Load Balancing Appliance.
Is there anyone who can help give me more details if i need 2 VIP for the front end ?

Doubt on Hardware Load Balancing?

Hi Community,
I think there are two ways to perform the load balancing.One of them is proxy and other one is hardware load balancing.I have know something about the Proxy related Load balancing using Apache,oracle HTTP server and others.My question,I don't know about the single bit of Hardware load balancing,i refer the some sites but it is not benefits for me.So please guide me to configure the hardware load balancing for my cluster..
Regards,
Ove..

Hi,
Find the document for configuring the hardware load balancer with Weblogic
1.F5 load balancer
https://www.f5.com/pdf/deployment-guides/bea-bigip45-dg.pdf
2.Cicso
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/App_Networking/weblogicdg.html
http://www.cisco.com/en/US/solutions/ns340/ns517/ns431/ns432/net_design_guidance09186a0080908169.pdf
Additional Info
http://pauldone.blogspot.in/2013/04/load-balancing-t3-initial-context.html
Best Load Balancing Hardware | TechSource
Oracle Weblogic Server Administration: Load Balancing in Weblogic Server
http://www.broadband-testing.co.uk/download/ZeusBEAWebLogic.pdf
http://www.ateam-oracle.com/using-weblogic-as-a-load-balancer/
Hope it helps

Defining SERVER_NAME to use RUN_REPORT_OBJECT on a hardware load balancer

Hi everybody,
We are deploying a Forms application on OAS (actually Forms & Reports Services - FRS) 10.1.2.0.2 using a hardware load balancer, that distributes workload between two FRS instances on separate computers.
Forms work without a hitch, but it is executing reports that's not working.
The problem is that when using RUN_REPORT_OBJECT you have to supply the REPORT_SERVER parameter, and each computer has a different report server name, but you don't know in advance wich FRS instance you are going to connect to, because the URL is that of the load balancer.
We thought that omitting the report server name from the report_object would do the trick but then we get an "FRM-41211 integration error" message
What would be the right o recomended way to solve this problem?
Thanks in advance,
Miguel.

What would be the right o recomended way to solve this problem?I don't know what would be the right or recomended way, I can say how we solved the problem in our Forms/Reports applications.
We have a lookup table where each machine has some parameters configured, one of which is the reports server name. The first form in each application identifies the machine where it's running, and reads corresponding rows in that table.

SO Load Balancing Question

Hi all,
I have a service object (SO1) which has been set to Load Balancing.
This service object has an attribute which serves as a number allocator
(NA1).
This NA1 provides a unique number across the whole application for each of
the record that require to store into DB.
The problem is, will the NA1 get replicated if the SO1 is replicated?
If yes, will NA1 crash?
Regards,
Martin Chan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Senior Analyst/Programmer
Dept of Education and Training
Mobile : 0413-996-116
Email: martin.chandet.nsw.edu.au
Tel: 02-9942-9685

Hi Serge,
Could you prefix it with the PID of the load balanced process ?No I can't. At least not at the moment.
When a service object is replicated, it is automatically replicated into adifferent partition...
Thanks.
An advice, make the NA1 shared. So if you get to do multithreaded accessto
it, you won't screw up things.I am thinking it may be better off to create it as a service object on it's
own.
How is the number returned by the NA1 generated ?It gets generated by Forte's code.
... Try to make it so that the
load balanced partitions don't need to access the database more than onein
5 min. to get a new Seed Key. This would not need to PID.Thanks for your advise.
Regards
Martin Chan
-----Original Message-----
From: Serge Blais [mailto:Serge.BlaisSun.com]
Sent: Tuesday, 3 April 2001 14:17
To: Chan, Martin
Subject: RE: (forte-users) SO Load Balancing Question
Your right, they can generate the same number. How much control do you have
over the ID being generated? Could you prefix it with the PID of the load
balanced process ?
Just a note: When a service object is replicated, it is automatically
replicated into a different partition, possibly on the same machine or on a
different one.
An advice, make the NA1 shared. So if you get to do multithreaded access to
it, you won't screw up things.
How is the number returned by the NA1 generated ? If NA1 is using a stored
procedure, or something like:
Start TRX
read number
newnumber = number+5000
write back newnumber
End Trx
Something like will be very safe. The Database Index Table is taking care
of the critical section. Then you can be sure that each replicate can be
independent (not hit into each other) for 5000 iterations. Depending on the
frequency, you may want to up this number or lower this number. Too high it
would make the key very high very soon with wholes in the sequence. Too low
and you would have hit between the replicates. Try to make it so that the
load balanced partitions don't need to access the database more than one in
5 min. to get a new Seed Key. This would not need to PID.
Serge
At 01:59 PM 4/3/2001 +1000, you wrote:
Hi Serge,
The number return by the NA1 is used as a primary key for each of therecord
that stores in the DB.
The Number Allocator NA1 is required to access to DB to update an ID table
which carry the next available sequence number. NA1 will only update this
table for every 5000 records.
For example, the initial value of the sequence is: 1
The next update will change the value to 5001, next will be 10001 and soon.
>
The properties of this NA1 class at runtime
Shared - Disallowed
Distributed - Disallowed
Transactional - Is Default
Monitored - Disallowed
Unfortunately, this attribute is not a handle but is instantiated by theSO1
itself.
I have been thinking, if SO1 is replicated within the same partition, and
each replicate will carry its own NA1. NA1 and the replicate of NA1 may
return a same number if their initial values of the sequence are the same.
Correct?
Regards
Martin Chan
-----Original Message-----
From: Serge Blais [mailto:Serge.BlaisSun.com]
Sent: Tuesday, 3 April 2001 13:11
To: Chan, Martin; forte-userslists.xpedior.com
Subject: Re: (forte-users) SO Load Balancing Question
Let's see if I understand right.
You have a service object that keep a handle to an object that either keep
state information, or that generate state information. Now the thing to
figure out is which is it. Let's assume that NA1 is a number generator,
that does not need to be synchronized or that doesn't need to access any
external resource. It would still work, depending on the algorythm you are
using.
Will they share the same NA1? It depends on the nature of NA1, but for sure
NA1 would have to be an anchored object. An if multiple partitions would
share the same object "only" for key generation, you would bring down your
performance on key generation or key update (by adding one inter-process
call).
In short:
1. Many scenarios can happen, you need to be clearer on your description.
2. If you are sharing an object by load balanced partitions, this greatly
reduce the gain of load balancing the partition.
3. If NA1 is keeping state, any access to it would need to be controlled
"shared".
Have fun now...
Serge
At 12:30 PM 4/3/2001 +1000, Chan, Martin wrote:
Hi all,
I have a service object (SO1) which has been set to Load Balancing.
This service object has an attribute which serves as a number allocator
(NA1).
This NA1 provides a unique number across the whole application for each
of
the record that require to store into DB.
The problem is, will the NA1 get replicated if the SO1 is replicated?
If yes, will NA1 crash?
Regards,
Martin Chan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Senior Analyst/Programmer
Dept of Education and Training
Mobile : 0413-996-116
Email: martin.chandet.nsw.edu.au
Tel: 02-9942-9685
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.comSerge Blais
Professional Services Engineer
iPlanet Expertise Center
Sun Professional Services
Cell : (514) 234-4110
Serge.BlaisSun.comSerge Blais
Professional Services Engineer
iPlanet Expertise Center
Sun Professional Services
Cell : (514) 234-4110
Serge.BlaisSun.com

Coyotepoint E350 and OracleAs 10g Hardware Load Balancing SSL

Hi:
Has anyone been successful using a CoyotePoint E350 with XCEL SSL accelerator card and OracleAS 10g with SSL to hardware load balance an HTTPS site?

You're on the right track adding the SSL certificate to the Load Balancer. I'm not really sure what you mean 'without the use of Webcache'? However, if I had the choise, I'd always add the certificate to the Load Balancer.
A good document setting up a load balanced environment is the Enterprise Deployment Guide. Chapter 8 describes the tasks for a Forms environment.
Regards,
Martin

Hardware load balancer config

Hi,
EBS Release-12.1.3 ,
Apps -2 nodes HA,
Hardware load balancer-F5 in DMZ(Single Entry point for load balancing)
We have chosen HTTP Layer Hardware Load Balancing for persistentant session config
please advice that what kind of changes we need to do at the application level in order to implement Hardware load balancer like,
Can we configure EBS application to run on 443 port ,so as to directly redirect appln url from hardware load balancer to 443 port of EBS application node.
without reverse proxy configuration.
If reverse proxy in DMZ is required then how hardware load balancing will be configure for http layer balancing between nodes.
As we have iSupplier in internet connectivity,please suggest which kind of implementation we can go for.
Thanks
Edited by: user10702579 on 21 Sep, 2012 3:46 AM

Not necessarily - it depends on how F5 is configured. As stated, one of the settings on the F5 allows traffic from the client to be addressed to the virtual URL on the F5 using port 443 (https), and the F5 can then direct traffic to the real application servers on the port on which EBS is configured. The return traffic from the application server back to the F5 uses the same EBS port, and when the F5 send the traffic back to the client it can use 443 - so as far as the client is concerned, it looks like the entire application is SSL enabled (using 443).
If this setting is not configured in the F5, then EBS will have to be reconfigured to use 443 throughout.
HTH
Srini

Hardware Load Balancing Tuxedo

In a PeopleSoft scenario, can i use a hardware load balancer to scale out multiple PeopleSoft app servers on the JOLT port?
In theory, i think i should be able to , but for some reason it does not work.
Thanks
Alok

Hi Alok,
At the moment, we don't certify load balancers with Tuxedo, although I'm not sure why you are encountering errors using a hardware load balancer. I know other customers are using them successfully. Which load balancer are you using and how do you have it configured?
Regards,
Todd Little
Oracle Tuxedo Chief Architect

Hardware Load balancing

Hi,
I have 2 Oracle 9i Database Servers running on Sun systems which are physically located in 2 different locations connected by a leased line.
We would like to load balance these Servers which are physically located far using a Hardware Load Balancing device, ServerIronXL from Foundry Networks using IP.
I would like to know if there would be any issues from the Oracle Application while doing so?
I would also want to know if U want to suggest any other Hardware other than ServerIron to do this load balancing?
Best Regards,
Srini

Hi,
The SUN1 goes down because his source goes down.
Instead of the Source that is sending data do SUN1, a small unit is coming up and replacing the Source for 4 hours, but it feeds the SUN2 with data. That will be later on send to again SUN1, so to avoid duplication of data (sun2 is receiving data from sun1 all the time) , SUN2 is just holding the data until the Source comes up and starts feeding the SUN1. the data that was on sun2 will be deleted as soon the Source comes up.
While the Sun1 is down the Sun2 must feed information to the Web site.
It is just to split traffic during a certain period of time (4 hours, while the maintenance is happening), the rest of the 24 hours the sun2 is a Backup location, and it must contain the exact live copy of SUN1, and be ready to jump into production if something goes down on SUN1.
Regards,
Srini

Hardware Load Balancing Configuration and Session Clustering

          I would like to know where I can find any information on Hardware Load Balancing
          Configuration in order to leverage WLS HTTPSession clustering.
          Don Ferguson mentioned white papers on this subject however I can't seem to locate
          them.
          I am particularly interested in Cisco's 11000 Content Service Switch.
          Thanks.
          Mike Jones


Scroll to the bottom of this link. It discusses how to configure Alteon and Big-IP.
          The principles should apply to Cisco as well, but we don't have documentation on
          configuring it, as far as I know.
          http://e-docs.bea.com/wls/docs61/cluster/index.html
          -Don
          Michael Jones wrote:
          > I would like to know where I can find any information on Hardware Load Balancing
          > Configuration in order to leverage WLS HTTPSession clustering.
          > Don Ferguson mentioned white papers on this subject however I can't seem to locate
          > them.
          > I am particularly interested in Cisco's 11000 Content Service Switch.
          >
          > Thanks.
          >
          > Mike Jones

Hardware load balancing with session stickiness

Hello,
          We are looking for a hardware based solution to load balance 4
          unclustered weblogic servers. These servers are software replicas of
          each other and share a common database. We need a solution that
          provides session level server stickiness based on jsessionid as both a
          cookie and url rewrite. Currently we have Cisco load balancers which
          do not handle the url rewrite due to the fact the the load balancer
          only "sees" what is after the question mark in the url and the
          jsessionid is before the question mark. Example:
          http://somehost.com/some/url.jsp;jsessionid=26D5C566075663ABD8E17AD255974323?parm=value
          I'm sure we are not the only ones trying to do this. Any suggestions
          would be greatly appreciated.
          Thanks,
          Alan George


          Having worked on Cisco load balancer and WLS clustered, you would loose sessions
          when the requests are failed over.
          S
          "Shawn Kircher" <[email protected]> wrote:
          >
          >Has anyone got this type of scenario working where you load balance sticky
          >sessions
          >from a Cisco load balancer between non-clustered weblogic servers?
          >
          >Thanks,
          >
          >Shawn
          >
          >"Aravind Krishnasamy" <[email protected]> wrote:
          >>F5 or BigIp provides hardware level load balancing and it injects date
          >>inside weblogic cookie and maintains server affinity.
          >>Thanks
          >>Aravind
          >>"ageorge" <[email protected]> wrote in message
          >>news:[email protected]...
          >>> Hello,
          >>>
          >>> We are looking for a hardware based solution to load balance 4
          >>> unclustered weblogic servers. These servers are software replicas
          >>of
          >>> each other and share a common database. We need a solution that
          >>> provides session level server stickiness based on jsessionid as both
          >>a
          >>> cookie and url rewrite. Currently we have Cisco load balancers which
          >>> do not handle the url rewrite due to the fact the the load balancer
          >>> only "sees" what is after the question mark in the url and the
          >>> jsessionid is before the question mark. Example:
          >>>
          >>>
          >>http://somehost.com/some/url.jsp;jsessionid=26D5C566075663ABD8E17AD255974323
          >>?parm=value
          >>>
          >>> I'm sure we are not the only ones trying to do this. Any suggestions
          >>> would be greatly appreciated.
          >>>
          >>> Thanks,
          >>>
          >>> Alan George
          >>
          >>
          >

Clustering problems and load balancing question

          I am using Weblogic 6.1. My Windows NT environment consists of 10 web client-simulator
          machines, 2 App. Server machines and one database server machine. I have defined
          one cluster on each app. server. Each cluster is running 3 Weblogic instances, or
          so it should be when I fix my problems!
          My questions/problems are the following:
          1. Can I use a software dispatcher to perform workload balancing between the 2 weblogic
          clusters? That is, the client-simulator machines send the requests to the software
          dispatcher which performs workload balancing between the 2 Weblogic clusters. The
          clusters perform round-robin amongst all instances. Note that the documentation only
          talks about Hardware Balancing.
          2. I am having problems with my multicast IP addresses. For instance, on one App.
          Server machine, I am using the multicast IP address: 239.0.0.1 for MyCluster. When
          I start the Admin Server, I get a JDBC error: "... multicast socket error: Request
          Time Out". I have used the utils.MulticastTest utility which shows the packets not
          being received:
          I (S1) sent message num 1
          I (S1) sent message num 2
          I (S1) sent message num 3
          I (S1) sent message num 4
          What am I doing wrong?
          3. Re. the cluster configuration:
          NOTE: I have executed my workload using 2 independent App. Server machines with a
          software dispatcher - no clustering. Each App. Server used a jdbc connection pool
          of 84 database connections. The db connections happened to become my bottleneck.
          When I tried to increase the number of connections in the jdbc pool, throughput decreased
          dramatically. Thus, I decided to add a cluster of Weblogic instances to each one
          of my 8 x 900Mhz machines in order to scale up. Unfortunatly, adding clusters have
          not been that simple a task - probably because I am totally new to the Web Application
          Server world!
          Here is what I've got so far:
          I have obtained 3 static IP addresses for the 3 instances of Weblogic instances that
          I wish to run within the cluster. All servers in the cluster use port number 80.
          There is a corresponding DNS entry for each IP address. My base assumption is that
          one of these instances will double up as the Administration Server... Is it true,
          or do I need to define a separate Admin server if I wish to run 3 Weblogic instances
          (each with a connection pool of 84 database connections for a total of 252 database
          connections)?
          Do I need to re-deploy my applications for the cluster? And if so, would this explain
          why I am having problem starting my Admin Server?
          I think this is it for now. Any help will be greatly appreciated!
          Thanks in advance,
          Guylaine.


          Guylaine Cantin wrote:
          > I am using Weblogic 6.1. My Windows NT environment consists of 10 web client-simulator
          > machines, 2 App. Server machines and one database server machine. I have defined
          > one cluster on each app. server. Each cluster is running 3 Weblogic instances, or
          > so it should be when I fix my problems!
          >
          > My questions/problems are the following:
          >
          > 1. Can I use a software dispatcher to perform workload balancing between the 2 weblogic
          > clusters? That is, the client-simulator machines send the requests to the software
          > dispatcher which performs workload balancing between the 2 Weblogic clusters. The
          > clusters perform round-robin amongst all instances. Note that the documentation only
          > talks about Hardware Balancing.
          >
          We also support software load balancers (for e.g. resonate)
          The software dispatcher should be intelligent enough to decode the
          cookie and route the request to the appropriate servers. This is
          necessary to maintain sticky load balancing.
          > 2. I am having problems with my multicast IP addresses. For instance, on one App.
          > Server machine, I am using the multicast IP address: 239.0.0.1 for MyCluster. When
          > I start the Admin Server, I get a JDBC error: "... multicast socket error: Request
          > Time Out". I have used the utils.MulticastTest utility which shows the packets not
          > being received:
          >
          > I (S1) sent message num 1
          > I (S1) sent message num 2
          > I (S1) sent message num 3
          > I (S1) sent message num 4
          > ...
          >
          > What am I doing wrong?
          >
          You should run the above utility from multiple windows and see if each
          of them being recognized or not.
          i.e. java utils.MulticastTest -N S1 -A 239.0.0.1
          java utils.MulticastTest -N S1 -A 239.0.0.1
          > 3. Re. the cluster configuration:
          >
          > NOTE: I have executed my workload using 2 independent App. Server machines with a
          > software dispatcher - no clustering. Each App. Server used a jdbc connection pool
          > of 84 database connections. The db connections happened to become my bottleneck.
          > When I tried to increase the number of connections in the jdbc pool, throughput decreased
          > dramatically. Thus, I decided to add a cluster of Weblogic instances to each one
          > of my 8 x 900Mhz machines in order to scale up. Unfortunatly, adding clusters have
          > not been that simple a task - probably because I am totally new to the Web Application
          > Server world!
          >
          You have to stress test your application several times and set
          maxCapacity of the conn pool accordingly.
          > Here is what I've got so far:
          >
          > I have obtained 3 static IP addresses for the 3 instances of Weblogic instances that
          > I wish to run within the cluster. All servers in the cluster use port number 80.
          > There is a corresponding DNS entry for each IP address. My base assumption is that
          > one of these instances will double up as the Administration Server... Is it true,
          > or do I need to define a separate Admin server if I wish to run 3 Weblogic instances
          > (each with a connection pool of 84 database connections for a total of 252 database
          > connections)?
          BEA recommends to use Admin server for administrative tasks only
          like configuring new deployments, jdbc conn pools, adding users etc..
          It's not a good idea to have admin server part of cluster.
          >
          > Do I need to re-deploy my applications for the cluster? And if so, would this explain
          > why I am having problem starting my Admin Server?
          >
          You have to target all your apps to the Cluster.
          > I think this is it for now. Any help will be greatly appreciated!
          >
          > Thanks in advance,
          >
          > Guylaine.
          >

Load Balancing question

My company is in the process of building a small scale network architecture strictly for testing purposes. We have a DMZ area that contains 2 load balancers and 1 web server. The web server is a SunFire 280 and has two gig e nics. They want to cable one nic to one load balancer and one nic to the other. Since this is only one box we have to put the nics on separate subnets. The question is, can I configure the load balancers in a failover situation of an active active situation with one load balancer on one vlan and another load balancer on a separate vlan.

I did not able to understand why you want to give ip to two NICs from different subnets.
There is NO any requirement, like that. If you have your own requirement can you explain me that?
Ashman

Oracle Portal Load Balancing question

Our customer wishes to have multiple Oracle Application Servers running Oracle Portal, with load balancing. They would like to have Web Cache collocated with one of these Portal servers, operating as a load balancer for the Portal servers (including the one collocated with Web Cache). Our understanding is that this is not supported, since Web Cache must use the same port number as the destination server it is load balancing, and this is a problem with collocation. The alternative of using mod_oc4j load balancing by OHS is we understand not supported for Portal. The customer does not wish to use external, hardware load balancers, or operating system load balancing. We understand that the solution is to use Web Cache on a dedicated separate server, to load balance the Portal servers. Can you please confirm that, or is collocation possible to avoid the cost of the dedicated Web Cache server.
thanks,
Message was edited by:
user582458

<<
We understand that the solution is to use Web Cache on a dedicated separate server, to load balance the Portal servers. Can you please confirm that, or is collocation possible to avoid the cost of the dedicated Web Cache server
>>
You are right .. if the client does not want use load balancer you have no other choice.

CSS load balancing questions

I hope that someone can help with 2 simple (i think) CSS questions.
1. When configured properly for load balancing, should the CSS round-robin between servers or will it continue to use only one server until triggered by some event or parameter?
2. If 1 of 2 load balanced servers fails, how does load balancing proceed? Will it continue to try to load balance between the servers or will it give up on the failed server unitil some event or timeout occurs?
Thanks in advance,
Eliot

Hi Eliot,
The CSS can be configured to perform load balancing in a variety of different ways. Least connections, round robin, ACA etc. Each new connection through the CSS will be round robined over each of the servers in your server group.
If a server fails then the CSS will know it has failed through the use of keepalives (based on TCP connection, ICMP etc) and no longer send requests through to that server. Traffic associated with a previous connection to the failed server will be sent to on of the surviving servers. It is then up to the behavior of the application as to if the user experiences any disruption.
Hope this helps
Brett

General Hardware Load Balancer question

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