Load balancing algorithm for groups in RZ12

Hello,
I would like to know the load balancing algorithm for groups defined in RZ12.
I know that log on groups for external connections are administered via SMLG and table RZLLICLASS.
I also know that RFC resources can be managed for RFC logon groups via RZ12.
Kind regards,
Peter
<removed_by_moderator>
Point awarding is at your discretion, but read and follow the "Rules of Engagement"
Edited by: Juan Reyes on Dec 3, 2010 10:21 AM

Hello!
Found this post while searching information about RFC and Logon Groups...
I have some mess in my head with SMLG functionality and RZ12. As I know SMLG we can use to distribute users to application server instances, it gives us good achievement in performance. With RZ12 we can distribute RFC connection of particular job for parallel execution on predefined application server. With SMQS and SMQR transaction we can set "Name of AS Group" to route RFC-execution on certain server or servers. But I have troubles with understanding. Imagine, we set up group 1 with 2 servers (name it RFC_GR1), and group 2 with another 2 servers (name it RFC_GR2). How could qRFC scheduler decide on which RFC server group (RFC_GR1 or RFC_GR2) distribute RFC-execution? How to interact "Name of AS Group" with RFC groups if we can set only one group? How could we distribute RFC-execution depending on our logon groups (smlg)? We would like to distribute RFC depending on SAP logon groups. Is it possible? Or do I compare apple and orange?
Regards,
Artem Ivashkin

Similar Messages

Load-balancing Algorithm for NX-OS Port Channels

Hi, all
I do not understand description of port-channel load-balance ethernet command.
switch(config)# port-channel load-balance ethernet ?
destination-ip         Destination IP address
destination-mac        Destination MAC address
destination-port       Destination TCP/UDP port
source-dest-ip         Source & Destination IP address (includes l2)
source-dest-ip-only    Source & Destination IP addresses only
source-dest-mac        Source & Destination MAC address
source-dest-port       Source & Destination TCP/UDP port (includes l2 and l3)
source-dest-port-only Source & Destination TCP/UDP port only
source-ip              Source IP address
source-mac             Source MAC address
source-port            Source TCP/UDP port
Please tell me what the following descriptions mean.
Source & Destination IP address (includes l2)
Source & Destination TCP/UDP port (includes l2 and l3)
What are the meaning of "includes l2" and "includes l2 and l3" ?
Thank you for your cooperation in advance.

Hi Satoru,
On the Nexus 5000/6000 platforms, all FEXs will inherit the global hashing algorithm from the parent device.
On the Nexus 7000 platform, hashing algorithms can be assigned on a per FEX basis (all load balancing changes must be made from the Admin VDC):
N7K-A(config)# port-channel load-balance src-dst ip-l4port fex 134
Any FEX without a hashing algorithm configured with inherit the global hash. Making changes to the modular/global hash will not alter FEX specific hashing algorithms.
To verify the configuration applied you can use this command:
N5K_A# show port-channel load-balance
On the Nexus 7000, the per FEX algorithm can be checked by appending the ‘fex <#>’ to the end of the command in the Admin VDC or the FEX’s respective VDC:
N7K-A(config)# show port-channel load-balance fex 134
Regards,
Richard

Port Channel Load-Balancing Algorithm (North Bound)

I'm trying to figure out what the load balancing algorithm for the 6100 and 6200 FIs for the Northbound connections. I can't find any documentation on how to change it.
The Nexus 7000s use an 8-bit hash, making it very easy to do something other than 2, 4, or 8 link port channel and get even (at least algorithmically) distribution.
Catalyst switches (not sure about Sup2T though) would use a 1, 2, or 3-bit index, which would skew traffic algorthmically if you used a non-power of 2.
Looking at the 5K documentation, it seems to use the Catalyst style (though haven't been able to confirm). My guess is that whatever is used for the 5Ks is used for the 6100/6200.
Design wise, this would mean you would want to use powers of 2 for your NB uplinks.

Hello Tony,
On UCS FI, it uses " sr-cdest-ip " as the load balancing algorithm and uses 8 parameters for hashing
6248-01-B(nxos)# sh port-channel load-balance
Port Channel Load-Balancing Configuration:
System: source-dest-ip
Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac
6248-01-B(nxos)# show platform fwm info pc port-channel 1
dump pc info: if_index 369098752 dump_all 0 verbose 1
Po1: state 0x0 #pifs 1 fwimpd ctx 0x9666c1c
Po1: hash params - l2_da 1 l2_sa 1 l3_da 1 l3_sa 1
Po1: hash params - l4_da 1 l4_sa 1 xor_sa_da 1 hash_elect 1
I could not find an option to change these values.
Padma

ESXi 4.1 NIC Teaming's Load-Balancing Algorithm,Nexus 7000 and UCS

Hi, Cisco Gurus:
Please help me in answering the following questions (UCSM 1.4(xx), 2 UCS 6140XP, 2 Nexus 7000, M81KR in B200-M2, No Nexus 1000V, using VMware Distributed Switch:
Q1. For me to configure vPC on a pair of Nexus 7000, do I have to connect Ethernet Uplink from each Cisco Fabric Interconnect to the 2 Nexus 7000 in a bow-tie fashion? If I connect, say 2 10G ports from Fabric Interconnect 1 to 1 Nexus 7000 and similar connection from FInterconnect 2 to the other Nexus 7000, in this case can I still configure vPC or is it a validated design? If it is, what is the pro and con versus having 2 connections from each FInterconnect to 2 separate Nexus 7000?
Q2. If vPC is to be configured in Nexus 7000, is it COMPULSORY to configure Port Channel for the 2 Fabric Interconnects using UCSM? I believe it is not. But what is the pro and con of HAVING NO Port Channel within UCS versus HAVING Port Channel when vPC is concerned?
Q3. if vPC is to be configured in Nexus 7000, I understand there is a limitation on confining to ONLY 1 vSphere NIC Teaming's Load-Balancing Algorithm i.e. Route Based on IP Hash. Is it correct?
Again, what is the pro and con here with regard to application behaviours when Layer 2 or 3 is concerned? Or what is the BEST PRACTICES?
I would really appreciate if someone can help me clear these lingering doubts of mine.
God Bless.
SiM

Sim,
Here are my thoughts without a 1000v in place,
Q1. For me to configure vPC on a pair of Nexus 7000, do I have to connect Ethernet Uplink from each Cisco Fabric Interconnect to the 2 Nexus 7000 in a bow-tie fashion? If I connect, say 2 10G ports from Fabric Interconnect 1 to 1 Nexus 7000 and similar connection from FInterconnect 2 to the other Nexus 7000, in this case can I still configure vPC or is it a validated design? If it is, what is the pro and con versus having 2 connections from each FInterconnect to 2 separate Nexus 7000? //Yes, for vPC to UCS the best practice is to bowtie uplink to (2) 7K or 5Ks.
Q2. If vPC is to be configured in Nexus 7000, is it COMPULSORY to configure Port Channel for the 2 Fabric Interconnects using UCSM? I believe it is not. But what is the pro and con of HAVING NO Port Channel within UCS versus HAVING Port Channel when vPC is concerned? //The port channel will be configured on both the UCSM and the 7K. The pro of a port channel would be both bandwidth and redundancy. vPC would be prefered.
Q3. if vPC is to be configured in Nexus 7000, I understand there is a limitation on confining to ONLY 1 vSphere NIC Teaming's Load-Balancing Algorithm i.e. Route Based on IP Hash. Is it correct? //Without the 1000v, I always tend to leave to dvSwitch load balence behavior at the default of "route by portID".
Again, what is the pro and con here with regard to application behaviours when Layer 2 or 3 is concerned? Or what is the BEST PRACTICES? UCS can perform L2 but Northbound should be performing L3.
Cheers,
David Jarzynka

ACE Load Balancing algorithm

Team,
I was reading Designing Content Switching Solutions last night. I came across a page that suggested Round Robin for HTTP connections, Least Conns for FTP connections, dst Hash for caching connections and so on.
Could someone please provide information or a link on which load balancing algorithm to use based on the application, is there some form of best practice for this?
Thank you,
John...

John,
there is no best practices.
It depends on your applications and needs.
For example, for caching, some people prefer to optimize the disk space, and other the response time.
So, if you do destination hash, you guarantee that all traffic for one site is always handled by the same cache.
Therefore you optimize the disk space since you will not find the same object on all caches.
BUT if one site attracts a lot of connections, the cache device that handles that site will be overloaded (for example youtube.com)
Leastconn is a good option in theory.
The device that has less connections should receive the next one.
The problem is if you have flapping links or servers crashing or if you do a lot of maintenance and add/remove servers frequently.
This confuses the algorithm and is the source of a lot of bugs.
My recommendation is to go with roundrobin unless you have identify that you really need another algorithm.
And you can always start with roundrobin and see what happens...
Gilles.

Hyper-V NIC Team Load Balancing Algorithm: TranportPorts vs Hyper-VPorts

Hi,
I'm going to need to configure a NIC team for the LAN traffic for a Hyper-V 2012 R2 environment. What is the recommended load balancing algorithm?
Some background:
- The NIC team will deal with LAN traffic (NOT iSCSI storage traffic)
- I'll set up a converged network. So there'll be a virtual switch on top of this team, which will have vNICs configured for each cluster, live migration and management
- I'll implement QOS at the virtual switch level (using option -DefaultFlowMinimumBandwidthWeight) and at the vNIC level (using option -MinimumBandwidthWeight)
- The CSV is set up on an Equallogics cluster. I know that this team is for the LAN so it has nothing to do with the SAN, but this reference will become clear in the next paragraph.
Here's where it gets a little confusing. I've checked some of the Equallogics documentation to ensure this environment complies with their requirements as far as storage networking is concerned. However, as part of their presentation the Dell publication
TR1098-4, recommends creating the LAN NIC team with the TrasportPorts Load Balancing Algorithm. However, in some of the Microsoft resources (i.e. http://technet.microsoft.com/en-us/library/dn550728.aspx), the recommended load balancing algorithm is HyperVPorts.
Just to add to the confusion, in this Microsoft TechEd presentation, http://www.youtube.com/watch?v=ed7HThAvp7o, the recommendation (at around minute 8:06) is to use dynamic ports algorithm mode. So obviously there are many ways to do this, but which one is
correct? I spoke with Equallogics support and the rep said that their documentation recommends TransportPorts LB algorithm because that's what they've tested and works. I'm wondering what the response from a Hyper-V expert would be to this question. Anyway,
any input on this last point would be appreciated.

Gleb,
>>See Windows Server 2012 R2 NIC Teaming (LBFO) Deployment and Management for more
info
Thanks for this reference. It seems that I have an older version of this document where there's absolutely
no mention of the dynamic LBA. Hence my confusion when in the Microsoft TechEd presentation the
recommendation was to use Dynamic. I almost implemented this environment with switch dependent and Address Hash Distribution because, based on the older version of the document, this combination offered:
a) Native teaming for maximum performance and switch diversity is not required; or
b) Teaming under the Hyper-V switch when an individual VM needs to be able to transmit at rates in excess of what one team member can deliver
The new version of the document recommends Dynamic over the other two LBA. The analogy that the document
makes of TCP flows with human speech was really helpful for me to understand what this algorithm is doing. For those who will never read the document, I'm referring to this:
"The outbound loads in this mode are dynamically balanced based on the concept of
flowlets. Just as human speech has natural breaks at the ends of words and sentences, TCP flows (TCP communication streams) also have naturally
occurring breaks. The portion of a TCP flow between two such breaks is referred to as a flowlet. When the dynamic mode algorithm detects that a flowlet boundary has been encountered, i.e., a break of sufficient length has occurred in the TCP flow,
the algorithm will opportunistically rebalance the flow to another team member if apropriate. The algorithm may also periodically rebalance flows that do not contain any flowlets if circumstances require it. As a result the affinity
between TCP flow and team member can change at any time as the dynamic balancing algorithm works to balance the workload of the team members. "
Anyway, this post made my week. You sir are deserving of a beer!

SG300-28: LAG Load Balance Algorithm

The SG300-28 LAG Load Balance Algorithm options are:
MAC Address
IP/MAC Address
This switch is connected to two ESXi hosts running version 5.5 each with quad port 1 gbit nic.
These ESXI hosts supports > 20 algorithms.
Is there in a upcoming firmware for the SG300-28 supporting more algorithms?

The SG300-28 LAG Load Balance Algorithm options are:
MAC Address
IP/MAC Address
This switch is connected to two ESXi hosts running version 5.5 each with quad port 1 gbit nic.
These ESXI hosts supports > 20 algorithms.
Is there in a upcoming firmware for the SG300-28 supporting more algorithms?

LOAD BALANCE BEHAVIOR FOR 7600 ON ETHERCHANNELS

Hi Everyone,
Currently I'm planning to implement ether-channels on 7600 routers, but there's something that's still not clear to me, regarding the load balancing behavior, for L2VPN and L3VPN.
I've read that 7600 in MPLS default load balance behavior is to take the SIP and DIP if present and the bottom of the stack label or the 5th label depending upon the number of labels on the stack. In l2VPN scenarios when ether-channel is used, if no IP traffic is present what is the default behavior of the etherchannel to calculate the load balancing hash function to select a given link on the bundle.
I'll appreciate any feedback regarding this.

Hi Louis, you could set default routes on the ASA's with tracking, and use ospf downstream to inject the default route in to the network with default information originate - this will only advertise out a default route if it has it in the routing table. With SLA you can track internet reachability by IP SLA echo to something like 8.8.8.8. Both sides can advertise this in to the network, if one goes then there is one left. Just be mindful of the policies and NAT required, you will have to duplicate the rules on the ASA's. With the NAT you have to ensure, that outgoing traffic comes back in the same path it left so it doesn't break connections.

Best Load Balancing solution for NMS 4.15

What is the best load balancing solution for Messaging Server with 250 users?

What are you trying to achieve? I do not understand from your question what it is you are trying to accomplish. What component(s) of NMS are you trying to load balance?

Load balancing algorithms

hello
can any one give URL about load balancing algorithms in 11500 series?
sincerally

Hi,
Here is a link.
http://www.cisco.com/univercd/cc/td/doc/product/webscale/css/css_730/contlbgd/contrule.htm#1038118
Hope this helps,
Regards,
Sagar

Load balancing plugin for Sun WS 6.1

Where can I find details about the load balancing plugin for Sun Java Web Server 6.1?
Can I work around that by using the reverse proxy plugin and configure to work as a Load balancer?
thx
Anand

Details about using the reverse proxy plugin can be found here:
http://docs.sun.com/source/819-0902/rpp61.html
The reverse proxy plugin can be used for load balancing. Use the service-passthrough Service SAF for this purpose. You are particularly interested in the "servers" parameter
"servers - A quoted, space-delimited list of the servers that receive the forwarded requests. Individual server names may optionally be prefixed with http:// or https:// to indicate the protocol and/or suffixed with a colon and integer to indicate the port."

Load Balancing Rules for BIGIP

I am running single-user applications that fall into two
categories:
1.) recording and uploading audio
2.) streaming audio and video over rtmp, rtmpt, and rtmps
The files being streamed are on a NAS.
Is anyone using a hardware load balancer in conjunction with
FMS? Is it possible to do SSL offloading for rtmps? Would anyone be
willing to share your pools, iRules, and other configuration data?
Thanks!

Hello!
Found this post while searching information about RFC and Logon Groups...
I have some mess in my head with SMLG functionality and RZ12. As I know SMLG we can use to distribute users to application server instances, it gives us good achievement in performance. With RZ12 we can distribute RFC connection of particular job for parallel execution on predefined application server. With SMQS and SMQR transaction we can set "Name of AS Group" to route RFC-execution on certain server or servers. But I have troubles with understanding. Imagine, we set up group 1 with 2 servers (name it RFC_GR1), and group 2 with another 2 servers (name it RFC_GR2). How could qRFC scheduler decide on which RFC server group (RFC_GR1 or RFC_GR2) distribute RFC-execution? How to interact "Name of AS Group" with RFC groups if we can set only one group? How could we distribute RFC-execution depending on our logon groups (smlg)? We would like to distribute RFC depending on SAP logon groups. Is it possible? Or do I compare apple and orange?
Regards,
Artem Ivashkin

Mod_weblogic and load balancing algorithm

Hi,
we have a problem where we have 2 boxes, each with Apache (doing some header and url rewrites) and configured with mod_weblogic, and weblogic servers with our stateless applications.
We have a HW loadbalancer in front, doing round-robin balancing, and we would like to configure load balancing feature in the Apaches so that each Apache always tries the request to the weblogic located in the same box, and only if that fails, try to the weblogic in the other box.
We also have a web applications with sessions, so we would like balancing feature for sticky sessions to apply.
Can somebody help?

The loadbalancing section in this post (http://middlewaremagic.com/weblogic/?p=7819) might help you
You can configure the weblogic module by using, for example,
LoadModule weblogic_module   "${ORACLE_HOME}/ohs/modules/mod_wl_ohs.so"
<IfModule weblogic_module>
     ConnectTimeoutSecs 10
     ConnectRetrySecs 2
     DebugConfigInfo ON
     WLSocketTimeoutSecs 2
     WLIOTimeoutSecs 300
     Idempotent ON
     FileCaching ON
     KeepAliveSecs 20
     KeepAliveEnabled ON
     DynamicServerList ON
     WLProxySSL OFF
</IfModule>
<Location /b2bconsole>
     SetHandler weblogic-handler
     WebLogicCluster 192.168.1.66:8001,192.168.1.67:9001
</Location>
<Location /integration>
     SetHandler weblogic-handler
     WebLogicCluster 192.168.1.66:8001,192.168.1.67:9001
</Location>
<Location /soa-infra>
     SetHandler weblogic-handler
     WebLogicCluster 192.168.1.66:8001,192.168.1.67:9001
</Location>

Load Balancing 11i for both Intranet & Internet Access

Our current environment for 11i (11.5.5) is accessed only internally (via Intranet). We need to allow outside access (via Internet) also for self-service apps (ie. HR). Oracle Support/Metalink has stated that Load Balancing (note 148155.1) is the only supported method to have multiple (Apps Servers) systems access a single database. Could I get feedback from anyone who has implemented Load Balancing for 11i? Additionally if someone has implemented this for both intranet and internet access how has your company setup? Do the secondary server(s) from the Load Balancing note reside in the DMZ? And thus the primary app server and database reside inside the firewall? Thanks....

Hi,
We are using 6 middle tiers for internal access for intranet access and 2 middle tiers in External DMZ with only web server running for Extrenal Access over Internet for Self Service.
You Implement one Load Balancer for first 6 internal Middle Tiers with site level profiles pointing to Internal .
You implement second Load balancer for external 2 middle tiers with server level profile options for these two servers pointing to External Load balancer .
To check how to implement load balancer vsiit
http://becomeappsdba.blogspot.com/2006/09/configure-hardware-load-balancer-at.html
Wait for my next post in above blog site with step by step procedure to implement above solution External & Internal one
Atul Kumar
Oracle Apps DBA
http://teachmeoracle.com

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

Load balancing algorithm for groups in RZ12

Similar Messages

Maybe you are looking for