Load Balancing Users

Hi Everyone,
We seem to have an issue on our load balancing where one server keeps getting overloaded with users on it than the other servers which is in turn causing performance issues where one server is getting over utilized while the others aren't. Other than limiting the amount of users that can log on to this one server is there anything we can do to balance out the users amongst the application servers?

Check the following SAP Notes:
[SAPNote 51789 - Poor user distribution in logon distribution|https://websmp230.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/sapnotes/index2.htm?numm=51789]
[SAPNote 118093 - Concepts of defining 'limits' in logon load balancing |https://websmp230.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/sapnotes/index2.htm?numm=51789]
[SAP Note 26317 - Set up for LOGON group for autom. load balancing|https://websmp207.sap-ag.de/~form/handler?_APP=01100107900000000342&_EVENT=REDIR&_NNUM=26317]
Thanks,
Naveed

Similar Messages

Ise & vlan load balancing (user balancing)

As far as I know anb based on some esperience in a test environment it seems that cisco ISE among two load balancing radius kind of attributes supports only vlan gropu assignment, this means that on the switches vlan group assignment is required.
A second method of passing multiple vlans or vlan IDs by radius attributes is not allowed.
Am I wrong?
The issue I'm trying to overcome is the following
Subnet1 /24
Subnet2 /22
Many, many switches
(and the situation can't be changed)
Assuming the vlan assignment is local to the switch and with a round robin method, once the IPs are exhausted on Subnet1 only half of the clients that authenticate will obtain an IP (on Subnet2) while the rest will get stuck on Subnet1 without an IP
The same situation comes up when considering an odd number of authenticated clients on every switch and with two /24 subnets: it is likely possible that Subnet1 will be "full" before the second subnet does falling in the previous situation.
is there any solution?
thank you in advance

Don,
You are right. I should have said - Forte uses its own partitioning scheme
not the default scheme you see when you open partition workshop.
Nirmal
From: Don Nelson <[email protected]>
To: Nirmal P Uppalapati <[email protected]>
Cc: [email protected]
Subject: Re: Load Balancing, User Visible Service objects, Running man
Date: Wednesday, October 22, 1997 10:45 PM
Nirmal,
One note on the "running man"...
At 08:12 PM 10/22/97 -0500, Nirmal P Uppalapati wrote:
3. Running Man
When you run an application by clicking on the running man Forte uses
its
default partitioning scheme and runs the application. The partitionscheme
that you made will be used only when you run the application distributedor
from the partition workshop. This is the time you might encounter errorsif
your partitioning is not right.
Actually, clicking on the "running man" from the repository or project
workshop will cause the application to be run VERY differently thanrunning
it distributed.
It's not technically correct to say that the default partitioning schemeis
used with the running man.
Forte consulting offers a deployment workshop that covers the finerpoints
of this and other distributed issues.
Don
============================================
Don Nelson
Regional Consulting Manager - Rocky Mountain Region
Forte Software, Inc.
Denver, CO
Corporate voice mail: 510-986-3810
aka: [email protected]
============================================
"If you ask me, though, any game without push-ups, hits, burns or noogies
is a sissy game." - Calvin

Load Balancing, User Visible Service objects, Runningman

1. Load Balancing
Load Balancing a partition has nothing to do with single or multi-threaded
behaviour of that partition. If you load balance a partition it means that
you can start 1 or more copies of that partition. How many to start can be
specified. If the partition is load balanced there will be router partition
that routes calls to any of the services in that partition.
Now let us look at a special kind of partition (load balanced partition
that has an Env visible SO and a user visible DbSession). This is one of
the design patterns to acccess the database efficiently. Each of these
partitions are single threaded because DbSession is inherently single
threaded. This partition is single threaded because Dbsession is single
threaded and not because the partition is replicated.
Another case is when you make a partition load balanced and it has only
SO(s) made out of tool classes and does not have Dbsessions then each of
these partitions can run multi-threaded beacuse there are no
single-threaded objects to make the partition single threaded
2. User Visibility
Case A - If you have only User visible SO(s) in a partition then each
behaves like a global named object. Whoever accesses it will get a copy of
their own.
Case B - If you have a user visible SO and an Env Visible SO in the same
partition then the user visible SO will be private to the partition and
cannot be accessed from outside that partition.
3. Running Man
When you run an application by clicking on the running man Forte uses its
default partitioning scheme and runs the application. The partition scheme
that you made will be used only when you run the application distributed or
from the partition workshop. This is the time you might encounter errors if
your partitioning is not right.
Hope this helps.
Nirmal

Don,
You are right. I should have said - Forte uses its own partitioning scheme
not the default scheme you see when you open partition workshop.
Nirmal
From: Don Nelson <[email protected]>
To: Nirmal P Uppalapati <[email protected]>
Cc: [email protected]
Subject: Re: Load Balancing, User Visible Service objects, Running man
Date: Wednesday, October 22, 1997 10:45 PM
Nirmal,
One note on the "running man"...
At 08:12 PM 10/22/97 -0500, Nirmal P Uppalapati wrote:
3. Running Man
When you run an application by clicking on the running man Forte uses
its
default partitioning scheme and runs the application. The partitionscheme
that you made will be used only when you run the application distributedor
from the partition workshop. This is the time you might encounter errorsif
your partitioning is not right.
Actually, clicking on the "running man" from the repository or project
workshop will cause the application to be run VERY differently thanrunning
it distributed.
It's not technically correct to say that the default partitioning schemeis
used with the running man.
Forte consulting offers a deployment workshop that covers the finerpoints
of this and other distributed issues.
Don
============================================
Don Nelson
Regional Consulting Manager - Rocky Mountain Region
Forte Software, Inc.
Denver, CO
Corporate voice mail: 510-986-3810
aka: [email protected]
============================================
"If you ask me, though, any game without push-ups, hits, burns or noogies
is a sissy game." - Calvin

RE: (forte-users) Call to the load-balanced SO not throughrouter

We never call an SO from within an SO. Instead we do the following :
MySO is mapped to MySOclass.
MySOclass is a facade which has an attribute for every Policy Manager
related to this SO.
Each Policy manager is instanciated in MySOclass.
Each Policy manager has an attribute called Parent.
Parent is defined by MySOclass to be self.
If two Policy managers need to work together we invoke methods via the
parent attribute :
Example
I have a partition for Enrolments.
It has three Policy Managers within it
a Students Policy Manager (with a Add, Delete, Get methods)
a Courses Policy Manager (with a Add, Delete, Get methods).
an Enrolments Policy Manager (with a Add, Delete, Get methods).
To enable this partition we have defined :
EnrolmentsSO (environment visible, message duration) with the EnrolmentsMgr
class as its related class.
The EnrolmentsMgr class has the following methods and attributes :
Methods :
AddStudent
AddCourse
AddEnrolment
GetStudent
GetCourse
GetEnrolment
DeleteStudent
DeleteCourse
DeleteEnrolment
All of these methods do a one line return statement, simply passing the
method invocation to
the appropriate Policy Manager. For example AddStudent would say
Return theStudentPM.AddStudent(pInStudentParams : pInStudentParams)
: pOutStudentParams
In the Init method for the EnrolmentsMgr we instanciate the following
attributes :
theStudentPM (which is typed to the StudentPM class)
theCoursePM (which is typed to the CoursePM class)
theEnrolmentsPM (which is typed to the EnrolmentsPM class)
Also in the Init method we set an attribute (called parent) on each
PM to the value of Self.
Then when one PM needs to invoke a method on another PM we simply do :
For example in the theEnrolmentPM.GetEnrolment method we need to get
Students and Courses
thus we code :
Parent.GetStudent(pInStudentParams = pInStudentParams) : pOutStudentParams
Parent.GetCourse((pInCourseParams = pOutStudentParams.CourseStuff) :
pOutCourseParams
Build Enrol details based on student / course stuff.
Return EnrolmentParams.
Hope this makes sense.
Regards,
Chris Will, Dept. of Educ. Training, ITB, Sydney, Australia
-----Original Message-----
From: Peter Sham [mailto:[email protected]]
Sent: Friday, 8 October 1999 9:35
To: [email protected]; [email protected]
Subject: Re: (forte-users) Replicating the PersistenceMgrSO
Hi,
Whenever you make a call to your load-balanced SO, it
would go through the router. That is what I
understand. No matter you make the call from inside
or outside the SO.
Secondly, you can turn on the "fail-over" option of a
router but not load-balanced it. On these routers,
you can check their instruments to see which one is
really running.
Hope this help.
Regards,
Peter Sham.

We never call an SO from within an SO. Instead we do the following :
MySO is mapped to MySOclass.
MySOclass is a facade which has an attribute for every Policy Manager
related to this SO.
Each Policy manager is instanciated in MySOclass.
Each Policy manager has an attribute called Parent.
Parent is defined by MySOclass to be self.
If two Policy managers need to work together we invoke methods via the
parent attribute :
Example
I have a partition for Enrolments.
It has three Policy Managers within it
a Students Policy Manager (with a Add, Delete, Get methods)
a Courses Policy Manager (with a Add, Delete, Get methods).
an Enrolments Policy Manager (with a Add, Delete, Get methods).
To enable this partition we have defined :
EnrolmentsSO (environment visible, message duration) with the EnrolmentsMgr
class as its related class.
The EnrolmentsMgr class has the following methods and attributes :
Methods :
AddStudent
AddCourse
AddEnrolment
GetStudent
GetCourse
GetEnrolment
DeleteStudent
DeleteCourse
DeleteEnrolment
All of these methods do a one line return statement, simply passing the
method invocation to
the appropriate Policy Manager. For example AddStudent would say
Return theStudentPM.AddStudent(pInStudentParams : pInStudentParams)
: pOutStudentParams
In the Init method for the EnrolmentsMgr we instanciate the following
attributes :
theStudentPM (which is typed to the StudentPM class)
theCoursePM (which is typed to the CoursePM class)
theEnrolmentsPM (which is typed to the EnrolmentsPM class)
Also in the Init method we set an attribute (called parent) on each
PM to the value of Self.
Then when one PM needs to invoke a method on another PM we simply do :
For example in the theEnrolmentPM.GetEnrolment method we need to get
Students and Courses
thus we code :
Parent.GetStudent(pInStudentParams = pInStudentParams) : pOutStudentParams
Parent.GetCourse((pInCourseParams = pOutStudentParams.CourseStuff) :
pOutCourseParams
Build Enrol details based on student / course stuff.
Return EnrolmentParams.
Hope this makes sense.
Regards,
Chris Will, Dept. of Educ. Training, ITB, Sydney, Australia
-----Original Message-----
From: Peter Sham [mailto:[email protected]]
Sent: Friday, 8 October 1999 9:35
To: [email protected]; [email protected]
Subject: Re: (forte-users) Replicating the PersistenceMgrSO
Hi,
Whenever you make a call to your load-balanced SO, it
would go through the router. That is what I
understand. No matter you make the call from inside
or outside the SO.
Secondly, you can turn on the "fail-over" option of a
router but not load-balanced it. On these routers,
you can check their instruments to see which one is
really running.
Hope this help.
Regards,
Peter Sham.

User restrication on load balance VIP

we need to implement below requirement can any one suggest how to imlement it
1.Sticky command
Once a connection is opened to a physical server, any requests coming from a particular client always go to that server, until either the timeout is reached or the user session is terminated
2.Client-assigned load balancing
All requests coming from a specific client always go to the same physical server. This is done through recognition of the clients IP address.
3.User session restrictions
User name / IP session restriction based on parameter values(ie only 1 user can login at a time).
Please find the below config
service test1
ip address 10.8.1.25
protocol tcp
keepalive type http
keepalive port 80
active
service test2
ip address 10.8.1.26
protocol tcp
keepalive type http
keepalive port 80
active
content DSS-R1
protocol tcp
vip address 10.8.1.1
port 80
advanced-balance sticky-srcip-dstport
add service test1
add service test2
active
please suggest me how to implement all three points whereas point 3 is very crucial & urgent.

1/ is done with the advanced-balance command.
I would suggest to replace the current one with 'advanced-balance sticky-srcip' since the destination port is always 80 [per config].
2/ you can force a client to go to a particular server with an acl and the prefer option.
ie:
acl 1
clause 10 permit tcp x.x.x.x destination content owener/DSS-R1 prefer test1
clause 99 permit any any destination any
apply all
acl enable
3/ we will need more details.
Not much can be done so, because the CSS only counts active connections.
So, you can restrict 1 user at a time with the command 'maxconn 1' but I'm not sure if it will help.
You should test it first and see if it does what you need.
Regards,
Gilles.

ACE Load Balancing Configuration For NATed User Traffic

Hello,
I am currently working on a requirement where the shared application services will be hosted in DC and these services will be accessed by multiple (thousands) users from different corporates/customers. The user traffic will be hidden behind customer's proxy servers or firewalls so the load balancer (ACE modules) services hosted in DC will not be able to see requests coming in from induvidual users IP addresses.
In this scenario what are options of load balancing are available in Lyer3/4 and Layer7 ?
Thanks in advance for your help.
Sanjay

Hi Sanjay,
In a set up where all users are coming from behind a proxy, all users will be loadbalanced to same server thus overloading it. This is when you are doing standard L3/L4 LB.
In the situation of proxies, for HTTP applications you shall use L7 LB and use information(cookie) in HTTP client request or server response. The ace will use this information to stick the user to same server for persistence. If a client comes with no cookie it will be loadbalanced according to the predictor method configured. Below is the link for L7 configuration example and other TS steps you can take while configuring L7 policies on ACE. For more informatin i would suggest reading ACE user guide too.
http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_(ACE)_Troubleshooting_Guide_-_Troubleshooting_Layer_7_Load_Balancing
If you have any questions please feel free to ask.
Regards,
Kanwal

Cluster / Load balancing and no. of user

Hi
Just wondering what kind of cluster / load balancing setup is need for e.g. 50 concurrent users ? and what's the deciding factor that will justify additional presentation service / BI server to be added to an existing cluster farm ?
Or maybe if you guys could share what's the cluster setup that you have and the number of users that would greatly help me to get a rough idea of the kind of setup needed. E.g. 2x presentation services and 2x BI server with 100 users, estimated 50 concurrent users, etc..
Thanks in advance !

If there are 50 concurrent users, I don't think that you need to go for clustering. You can use more resources like increasing the RAM size and increasing th CPU count.
If you opt for 64 bit operating system ,it would give you better performance.
Regards
Rajesh J

Load balancing and clustering for SQL SERVER ANALYSIS SERVER instances to access large number of concurrent users for bi site

HI
how to do analysis server clustering
we have sharepoint bi site and we published many dashboards pointers ,filters kpis
and at a time some 200 to 300 concurrent users access these dashboards pages
so for maintain this requirement how we apply clustering for ssas intances
and also it has load balancing
adil

Hi Adil,
According to your description, you want to implement SQL Server Analysis Services Clusster and Analysis Services Load Balancing, right?
In SSAS, we can design highly available solutions in Analysis Services by using: network load balancing (NLB) technologies, failover clustering technologies, or both. For the details about implemention, please refer to the links below.
http://msdn.microsoft.com/en-us/library/dn736073.aspx
http://sqlsrvanalysissrvcs.codeplex.com/wikipage?title=Analysis%20Services%20Load%20Balancing
http://technet.microsoft.com/en-us/library/bb500217(v=sql.105).aspx
Regards,
Charlie Liao
TechNet Community Support

Home Interface Load Balancing with user transactions

Hi
          Im running the following Client scenario:
          * gets initial context
          * lookup for Home Interface.
          * save the Home Interface.
          * Begin User Transaction
          * Home.findByPrimaryKey(pk)
          * activate some business method
          * Commit transaction.
          * close context
          now repeat but use the saved home interface
          * gets initial context
          * get saved Home Interface.
          * Begin User Transaction
          * Home.findByPrimaryKey(pk)
          * activate some business method
          * Commit transaction.
          * close context
          It seems that once i use the Home finder under a transaction the home
          interface will stick to the first server and load balancing won't work
          (doesn't matter if its round-robin or random).
          that means that in both cases the EjbObject i use is on the same server.
          please correct me if im wrong.
          but if im right is this a weblogic bug? or maybe a feature?
          thanks
          Dror Last


You will find that most engineers at BEA strong recommend NOT using UserTxns, unless you've got some
          complex nest transaction modeling that can't be done with BMT.
          From your case, it looks as if you should use a Session-bean facade between your servlets and entity
          beans; this way you set the session bean BMT attribute to whatever you wanted using
          UserTransaction; try this out and see what happens with load-balancing... we use BMT in clustered
          servers and load-balancing works great.
          Gene
          "Dror Last" <[email protected]> wrote in message news:[email protected]...
          > Im using Weblogic 5.1 / SP8
          >
          > <home-is-clusterable> set to TRUE on all beans.....
          >
          >
          > I have a big Question Mark if weblogic clustering does have load balancing
          > while the client (Servlet Engine in my case) Uses User Transactions.
          >
          > thanks
          > Dror Last
          >
          >
          > "Gene Chuang" <[email protected]> wrote in message
          > news:[email protected]...
          > > What WL version are u using, and what do you have <home-is-clusterable>
          > set to?
          > >
          > > Gene
          > >
          > > "Dror Last" <[email protected]> wrote in message
          > news:[email protected]...
          > > > Hi
          > > >
          > > > Im running the following Client scenario:
          > > >
          > > > * gets initial context
          > > > * lookup for Home Interface.
          > > > * save the Home Interface.
          > > > * Begin User Transaction
          > > > * Home.findByPrimaryKey(pk)
          > > > * activate some business method
          > > > * Commit transaction.
          > > > * close context
          > > >
          > > > now repeat but use the saved home interface
          > > >
          > > > * gets initial context
          > > > * get saved Home Interface.
          > > > * Begin User Transaction
          > > > * Home.findByPrimaryKey(pk)
          > > > * activate some business method
          > > > * Commit transaction.
          > > > * close context
          > > >
          > > > It seems that once i use the Home finder under a transaction the home
          > > > interface will stick to the first server and load balancing won't work
          > > > (doesn't matter if its round-robin or random).
          > > >
          > > > that means that in both cases the EjbObject i use is on the same server.
          > > >
          > > > please correct me if im wrong.
          > > >
          > > > but if im right is this a weblogic bug? or maybe a feature?
          > > >
          > > > thanks
          > > > Dror Last
          > > >
          > > >
          > >
          > >
          >
          >

SGD V4.5 JSP User load balancing

We are using the JSP load balancing as follows, we are in a round robin DNS environment , looking for user persistance.
// ** List of SGD servers
hosts = "https://mydomain.com"
// List of SGD servers to be used as potential targets (both modes)
hosts[0] = "https://eastserver1.com"
hosts[1] = "https://eastserver2.com"
hosts[2] = "https://westserver1.com"
hosts[3] = "https://westserver2.com"
// ** External name of this server (when in Round Robin DNS or Load Balancer Mode only)
// set to null if not using this mode
//var LBHOST = null // Not in Load Balancer/Round Robin DNS mode
var LBHOST = "https://eastserver1.com" // LB mode ==> the host this config file is on.
We are running into intermittent issue of no login screen coming up when using the high level DNS name, ie mydomain.com, just the sgd splash showing trying/selecting host:eastserver1.com
Your thoughts are appreciated.

You could read
https://blog.uvm.edu/jgm/2013/09/26/app-v-5-server-f5-load-balancers-and-kerberos/
https://blog.uvm.edu/jgm/2013/09/27/app-v-server-configuration-load-balanced-configuration/
http://social.technet.microsoft.com/Forums/en-US/2b39e2b8-aba1-4e96-b18f-c5bcb9f12687/load-balancing-two-appv-50-servers-the-publishing-service-is-not-able-to-contact-the-management?forum=mdopappv
http://www.thinclient.net/blog/?p=344
In fact I'm not sure if any of these really helps you, but they give some good advice
Falko
Twitter
@kirk_tn   |   Blog
kirxblog   |   Web
kirx.org   |   Fireside
appvbook.com

Which trxn for Support staff to terminate users in a Load Balance system

We have trxn sm04, but it will only provide users that are logged into the system that you have been sent to in a load balance environment.
I was also considering al08, but that does not allow support staff to terminate users.
Is there another trxn?
Please advise, we want to determine a strategy for the support staff before we roll out load balancing to all SAP users
B.Regards,
Maria

>
nirmal konchada wrote:
> Hi,
>
> In ST03 ransaction you have something called as transaction list, there you can find your transaction and after double clicking it you can find the list of users working on that transaction.
>
> Once the list is clear you can disconnect the user through SM51.
>
>
> Regards,
> Nirmal.K
Thank you for the advise. However I cannot locate in transaction ST03 the information you indicated. Also, your directions are confusing to me.
Maria

Load Balancing For Users

I have a single win2k8 r2 server vm with a C and D drive. The database is located on the D drive. The vendor states that the database has to be located on the server hosting the application. I need to know if there is a way to use MS Clustering to load balance
that server for logins and printing. This is a Windows Terminal (RDP) server using Citrix Xenapp 6.5. My goal is to have an additional server to balance logins and printing while the actual application remains on the original server. Please send me some
suggestions or best route to follow.

Hi,
Could you clarify
“My goal is to have an additional server to balance logins and printing while the actual application remains on the original server.” It seems you want to make the Terminal Services Session Broker service high available? If so you can refer
the following KB first:
Deploying Remote Desktop Connection Broker with High Availability Step-by-Step Guide
http://technet.microsoft.com/en-us/library/ff686148(v=ws.10).aspx
Hope this helps.
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.

Error in creation of JCO with Load balancing server

Hi,
We are using a ABAP user base for our WEBAS server 6.40 (with ABAP+JAVA). i have created a Public group in concerned ECC 5.0 system. I have already configured SLD, and then i maintain data supplier bridge in SLD and run RZ70 in ECC 5.0 system to load system information.. i can see details in SLD ..
now i am trying to create JCO connections .. here i am unable to create JCO with load balancing option.. i get
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=<servername> GROUP=PUBLIC R3NAME=SID MSSERV=sapms<SID> PCS=1 ERROR service 'sapms<SID>' unknown TIME Fri Jun 16 12:41:20 2006 RELEASE 640 COMPONENT NI (network interface) VERSION 37 RC -3 MODULE ninti.c LINE 505 DETAIL NiPGetServByName2: service 'sapms<SID>' not found SYSTEM CALL getservbyname_r COUNTER 1
i am able to create single server JCO, but it fails in load balancing.. is there anything i have missed out in settings...
Thanks and regards,
Sudhir

Thanks, Bogdan Rokosa
I have the same problem,and solved it following the steps provided by Bogdan Rokosa :
you must insert an entry for your R3 system
(like: sapms<SID> 3600/tcp)
in services file
(C:\WINDOWS\system32\drivers\etc\services) on Java WAS.
I test the Jco successful without restart J2EE Engine.

ISE 1.2 - Multiple NICs/Load Balancing for DHCP Probe

Hello guys
Just prepping an ISE 1.2 patch 8 setup in our organization. I am going for the virtual appliances with multiple NICs. It will be a distributed deployment with 4 x PSNs behind a load balancer and there is no requirement for wireless or guest user at the moment. I've got 2 points I will like to get some guidance on:
Our DC has a dedicated mgmt network and I plan to IP the gig0 interface of the PANs, MNTs and PSNs from this subnet. All device admin, clustering, config replication, etc will be over this interface. However, RADIUS/probe/other user traffic to the ISE PSNs will be over the gig1 interface which will be addressed from another L3 network. Is this a supported configuration in ISE?
I intend to use the DHCP probe as part of device profiling and will ideally like to have just an additional ip helper to add to our switch SVI config. Also, it will appear that WLCs can only be configured for 2 DHCP servers for a given network so another consideration for when we bringing our WLAN in scope. We however use ACE load balancers within our DC and from what I have read, they do not support DHCP load balancing. Are there any workarounds to using the DHCP probe with multiple PSNs without having to add each node as an ip helper/DHCP server on the NADs?
Thanks in advance
Sayre

Hello Sayre-
For Question #1:
Management is restricted to GigabitEthernet 0 and that cannot be changed so you should be good there
You can configure Radius and Profiling to be enabled on other interfaces
Even though you are not using guest services yet, you can dedicate an interface just for that. As a result, you can separate guest traffic completely from your production network
Take a look at this link for more info:
http://www.cisco.com/c/en/us/td/docs/security/ise/1-2/installation_guide/ise_ig/ise_app_c-ports.html
For Question #2
If you are using a Cisco WLC and running code 7.4 and newer you don't need to mess with the IP helper configurations.
The controller can be configured to act as a collector for client profiling and interact with the DHCP thread along with the RADIUS accounting task that is running on the controller. The controller receives a copy of the DHCP request packet sent from the DHCP thread and parses the DHCP packet for two options:
–Option 12—HostName of the client
–Option 60—The Vendor Class Identifier
After this information is gathered from the DHCP_REQUEST packet, a message is formed by the controller with these option fields and is sent to the RADIUS accounting thread, which is in turn transmitted to the ISE in the form of an interim accounting message.
Both DHCP and HTTP profiling settings are located under the "Advanced" configuration tab in the WLC
On the other hand, you can also use Anycast for profiling. You can check out some of Cisco Live's sessions for more info on that. Here is one that is from a couple of years (There are more recent ones that are available as well):
http://www.alcatron.net/Cisco%20Live%202013%20Melbourne/Cisco%20Live%20Content/Security/BRKSEC-3040%20%20Advanced%20ISE%20and%20Secure%20Access%20Deployment.pdf
I hope this helps!
Thank you for rating helpful posts!

SAP GLM Print Request - Load Balancing of WWI server

Hi GLM Experts,
I am using new GLM + module that generates labels based on Print Requests. I am unable to understand how I can load balance the WWI services when there are multiple label printing requests.
In GLM + we associate a WWI to a Print Station and which can then be associated with a printer. So in the configuration we are tying up a printer a WWI.
Also during label printing, if the scenario uses print request module, then the use need to select a print station and printer. What happens if the WWI related to the print station is down?
For example I have two services in WWI server GENPC1 and GENPC2. I created WWII and WWI2 as two print stations. I will associate my printer PRNWWI to both the print stations WWI1 and WWI2.
During label printing if the user picks and WWI1 and Printer PDNWWI and if the GENPC1 WWI server assocaited with print status WWI1 is busy and down I want WWI GENPC2 to generate the label?
How to setup the above load balancing or fall back? Please let me know.
Thanks
Pugal

Dear Pugal
we are not using GLM + and I am not sure about the technqiue used there to handle load balancing. Regarding general WWI setup I assume you know this Note: EH&amp;S: Availability and performance of WWI and Expert servers
On the top there is a further SAP Note abvailable which might be of interest. This is referenced here:
http://de.scribd.com/doc/191576739/011000358700000861002013-e
May be check OSS note: 1958655; OSS Note 1155294 is more related to normal WWI stuff; but may be check it as well. May be 1934253 might help better
May be this might help.
C.B.
PS: may be check as well: consolut - EHS_MD_140_01 - EH&amp;S-Management-Server einrichten
The load balancing of synchron WWi servers is donein the "RFC" layer, therefore you have no inffluence here, for asynchron WWI servers you can do a lot to manage the WWI load balancing by using "exits" etc.

Load Balancing Users

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