CISCO Load Balancer with SAP on Unix and Oracle

Hello Experts,
Explain me the steps How CISCO Load balancing Mechanism works with SAP Enterprise Portal?
If anyone implemented and achieved the same,please explain me the steps to follow from Initial Stage to end of implementation.
Or If you have any documentation on this just share with me or point me to the particular link.
I have seen the below SAP help which is somewhat helpful.
http://help.sap.com/saphelp_nw04s/helpdata/en/d3/e12840d89d185de10000000a1550b0/frameset.htm
I would like to know how CISCO will connect to M/essage Server /Java Dispatcher.
And explain me the steps to follow to implement External Facing Portal using Cisco Loadbalancer.
This should be achieved in Unix environment.
Any help would be greatly appreciated.
Regards,
Karthick Eswaran
*Points will be rewarded for helpful suggestions

We use F5 for loadbalancing, but all hardware loadbalancing solutions should similar. They offer multiple algorithms, we use simple round robin (SAP's webdispatcher has better options for load balancing). You create virtual IP to your CISCO loadbalancer. You then configure Cisco to route traffic to each portal application server. If you have CI + 2 appservers, you configure the loadbalancer to send traffic to cihost:port, appserver1:port, appserver2:port. You also create a DNS alias to the virtual IP of the loadbalancer. End users will use the DNS alias to connect your portal. Typically you use standard ports (80 & 443) on Cisco, so that end user URL does not contain any ports (so http traffic goes to port 80, https goes to port 443). You also need to enable cookie persistence on the load balancer for session persistence.
For external facing portal, you need to have your loadbalancer in DMZ and you want to use SSL. You also need to setup firewall rules for your portal and backend servers.
-RK

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CISCO Load Balancing Mechanism with SAP

Hello Experts,
Explain me the steps How CISCO Load balancing Mechanism works with SAP Enterprise Portal?
If anyone implemented and achieved the same,please explain me the steps to follow from Initial Stage to end of implementation.
Or If you have any documentation on this just share with me to my google id kekarthick or point me to the particular link.
I have seen the below SAP help which is somewhat helpful.
http://help.sap.com/saphelp_nw04s/helpdata/en/d3/e12840d89d185de10000000a1550b0/frameset.htm
I would like to know how CISCO will connect to Java Dispatcher.
And explain me the steps to follow to implement External Facing Portal using Cisco Loadbalancer.
This should be achieved in Unix and Windows 2003 environment.
Any idea?
Regards,
Karthick Eswaran
Edited by: Karthick Eswaran on May 21, 2008 12:40 AM

Hello Karthick,
let's say you have 2 servers for your portal:
host1 -> e.g. DB, SCS + CI --> http://host1.my.company:50000/irj/portal
host2 -> DI --> http://host2.my.company:50000/irj/portal
Now you can implement an CISCO hardware load balancer. You have to connect it to your network and reserve one port and another ip adress of it for the portal.
After that you have to add the ip adress of the both servers (host1+host2) to this port, so that the CISCO load balancer knows to which servers it has to forward the incoming connections.
If you use DNS in your company you can now map a more user-friendly name to the CISCO port (e.g. http://portal.my.company:50000/irj/portal) and distribute this link to the users of the portal.
When they connect to the portal via this link the CISCO load balancer will forward the request to one of the configured servers (host1 or host2) depending which one is online and/or the load of them.
I hope I understood your question right and my answer helps a little.
Regards,
Norman Schröder

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line on Cisco 2811 Router.
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hi
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regds

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Dear Andrew,
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Hi all,
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Do anyone has a similar deployment before and can you share with me the config guide to this because I'm at lost on a few configs:
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Configuring load balancing with SSL termination and stickiness for a couple of citrix xenapp servers. I'm doing a source-NAT as the ACE resides in the DMZ and these particular servers reside on the inside arm of the firewall. The ACE is in bridged mode to load balance web servers that reside in the DMZ. Everything seems to work just fine, but the cookie stickiness does not seem to be working.

Hi David,
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Please see Agentry Network Landscapes

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Dear All
We are using ITS bease SAP R3 iviews in EP ..The landscape is as follows
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Jayesh

Please do the following steps to accomplish load balancing. It includes both ITS definition and system definition.
ITS Definition:
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1) Message server with load balancing
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Load balancing with use of router 881.

Hello,
I have two MPLS line and i want load balancing with the help of CISCO router 881. is it necessary that i require two router on both location.? if one location have firewall and one location have cisco router 881 then can i do a load balancing or i require two router each on both location ? What are the basic requirement that i need.
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Kuntal

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The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
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In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
An 881 should be able to load share across multiple ports. Many routing protocol support ECMP, including BGP, but you need "special" hidden/secret commands to enable. EIGRP also supports unequal cost load sharing.
If an 881 supports OER or PfR, those too will do unequal load sharing, dynamically.

CF 10 Load-Balancing with Remote Instances

I was reading an article on Clustering/LB/HA using CF8, but have not found any updates for CF10.
Using VM VirtualBox to setup a few virtual servers, I am looking to setup a load balancing of ColdFusion 10 on 2 remote instances. The goal would be have ColdFusion Cluster Manager be able to point http request to one of the two servers based on load/availability. Not really having a hardware cluster/failover setup, just managing resources on two CF instances instead of a standalone.
The servers are Windows Server 2008 R2 with IIS7.5 and ColdFusion 10 Enterprise on installed on 3 of these machines. Let's call them CF-LBManager, CF-Web1, and CF-Web 2. In the CF Docs, they show the Cluster Manager adding the local CF instance and "if you want" a remote instance. However, this scenario would require the main instance to be running and not fail for it to direct to the other instance.
I am trying to set this up now with CF-LBManager as just a manager of the requests coming in. In the Enterprise Manager >> Instance Manager, the local instance is shown and I add the two remote instances with the correct Remote Port, JVM Route, etc. I also made sure the <Cluster>...</Cluster> block was added to the two remote instances (CF-Web1 and CF-Web2) \runtime\conf\server.xml file too, Jetty Services also is running. Now under the Enterprise Manager >> Cluster Manager I add the two remote instances to the cluster, not the local instance on CF-LBManager with Multicast Port and Sticky Sessions enabled. On Submit, I get a green message "You must restart all the server instances and any configured webservers for these changes to take effect.". I go ahead and reboot the servers and come back.
I now browse to the ColdFusion page as a test on CF-Web1 and CF-Web2 to make sure CF is running properly, they do. I then browse the IP of the CF-LBManager, however it only returns the local IIS web site and not redirect to one of the two cluster members. I am not seeing any message on the coldfusion-out.log on the remote instances. Am I not setting this up correctly or not enabling the Cluster Manager to take over and pass along the requests to those in the cluster?

Unfortunatley I don't have a lot of experience with CF10 on Windows, but if you are running CF behind IIS I think you will need to update the Tomcat connector configuraiton to do load balancing. I'm not sure if re-running the wsconfig tool on all of the servers will do this or not, but that is what I would suggest trying first. If that doesn't work you will need to update the Tomcat connector configuraiton manually. You can find more information on load balancing with the Tomcat connector here: http://tomcat.apache.org/connectors-doc/generic_howto/loadbalancers.html.

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
          >>
          >>
          >

CISCO Load Balancer with SAP on Unix and Oracle

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