IPTV load balancing across broadcast servers.

I know that across Archive servers in the same cluster that IPTV control server will load balance , is there is a similar function with Broadcast servers. I know broadcast servers use a different delivery mechanism (Multicast). We have multiple broadcast servers that take in an identical live stream, but the only way to advertise thru a URL is a seperate URL per server. Is there some way to hide the multiple URL's to the client population?

No. There is no way to load balance across multiple broadcast servers for live streams. Since this is going to be multicast, there should not be any additional load on the servers when the number of users are more.

Similar Messages

ACE module not load balancing across two servers

We are seeing an issue in a context on one of our load balancers where an application doesn't appear to be load balancing correctly across the two real servers. At various times the application team is seeing active connections on only one real server. They see no connection attempts on the other server. The ACE sees both servers as up and active within the serverfarm. However, a show serverfarm confirms that the load balancer sees current connections only going to one of the servers. The issue is fixed by restarting the application on the server that is not receiving any connections. However, it reappears again. And which server experiences the issue moves back and forth between the two real servers, so it is not limited to just one of the servers.
The application vendor wants to know why the load balancer is periodically not sending traffic to one of the servers. I'm kind of curious myself. Does anyone have some tips on where we can look next to isolate the cause?
We're running A2(3.3). The ACE module was upgraded to that version of code on a Friday, and this issue started the following Monday. The ACE has 28 contexts configured, and this one context is the only one reporting any issues since the upgrade.
Here are the show serverfarm statistics as of today:
ACE# show serverfarm farma-8000
serverfarm     : farma-8000, type: HOST
total rservers : 2
                                                ----------connections-----------
       real                  weight state        current    total      failures
   ---+---------------------+------+------------+----------+----------+---------
   rserver: server#1
       x.x.x.20:8000      8      OPERATIONAL 0          186617     3839
   rserver: server#2
       x.x.x.21:8000      8      OPERATIONAL 67         83513      1754

Are you enabling sticky feature? What kind of predictor are you using?
If sticky feature is enabled and one rserver goes down, traffic will leans to one side.
Even after the rserver retuns to up, traffic may continue to lean due to sticky feature.
The behavior seems to depend on the configuration.
So, please let me know a part of configuration?
Regards,
Yuji

Load balancing across 4 web servers in same datacentre - advice please

Hi All
Im looking for some advice please
The apps team have asked me about load balancing across some servers but im not that well up on it for applications
Basically we have 4 apache web servers with about 2000 clients connecting to them, they would like to load balance connections to all these servers, they all need the same DNS name etc.
what load balancing methods would I need for this, I believe they run on Linux
Would I need some sort of device, or can the servers run some software that can do this, how would it work? and how would load balancing be achieved here?
cheers

Carl,
What you have mentioned sounds very straightforward then everything should go well.
The ACE is a load balancer which takes a load balancing decisions based on different matching methods like matching virtual address, url, source address, etc then once the load balance decision has been taken then the ACE will load balance the traffic based on the load balance method which you have configured (if you do not configure anything then it will use the default which is "round robin"), then it will send the traffic to the servers which it has available and finally the client should get the content.
If you want to get some details about the load balancing methods here you have them:
http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_1_0/configuration/slb/guide/overview.html#wp1000976
For ACE deployments the most common designs are the following.
Bridge Mode
One Arm Mode
Routed Mode
Here you have a link for Bridge Mode and a sample for that:
http://docwiki.cisco.com/wiki/Basic_Load_Balancing_Using_Bridged_Mode_on_the_Cisco_Application_Control_Engine_Configuration_Example
Here you have a link for One Arm Mode and a sample for that:
http://docwiki.cisco.com/wiki/Basic_Load_Balancing_Using_One_Arm_Mode_with_Source_NAT_on_the_Cisco_Application_Control_Engine_Configuration_Example
Here you have a link for Routed Mode and a sample for that:
http://docwiki.cisco.com/wiki/Basic_Load_Balancing_Using_Routed_Mode_on_the_Cisco_Application_Control_Engine_Configuration_Example
Then as you could see in all those links you may end up having a configuration like this:
interface vlan 40
description "Default gateway of real servers"
ip address 192.168.1.1 255.255.255.0
service-policy input remote-access
no shutdown
ip route 0.0.0.0 0.0.0.0 172.16.1.1
class-map match-all slb-vip
2 match virtual-address 172.16.1.100 any
policy-map multi-match client-vips
class slb-vip
    loadbalance vip inservice
    loadbalance policy slb
policy-map type loadbalance http first-match slb
class class-default
    serverfarm web
serverfarm host web
rserver lnx1
    inservice
rserver lnx2
    inservice
rserver lnx3
    inservice
rserver host lnx1
ip address 192.168.1.11
inservice
rserver host lnx2
ip address 192.168.1.12
inservice
rserver host lnx3
ip address 192.168.1.13
inservice
Please mark it if it answered you question then other users can use it as reference in the future.
Hope this helps!
Jorge

Load balancing across multiple application servers not working with JCo RFC

We have a problem where inbound messages to the Mapping Runtime engine (ABAP -> J2EE) are not load balanced over application servers. However, load balancing does take place across server nodes within one application server.
Our system comprises of the following:
Central Instance (2 X server nodes)
Database Instance
2 X Dialog Instances (with 2 X server nodes each)
The 1st application server that starts is usually the one that is used for inbound messaging.
We have looked at the sap gateway configuration and have tried various options without much luck:
i.e.: local gateways vs. one central gateway, load balancing type by changing parameter gw/reg_lb_level, see: http://help.sap.com/saphelp_nw70/helpdata/EN/bb/9f12f24b9b11d189750000e8322d00/frameset.htm
Here are our release levels:
SAP_ABA     700     0012     SAPKA70012
SAP_BASIS     700     0012     SAPKB70012
PI_BASIS     2005_1_700     0012     SAPKIPYJ7C
ST-PI     2005_1_700     0005     SAPKITLQI5
SAP_BW     700     0013     SAPKW70013
ST-A/PI     01J_BCO700     0000          -
Any help would be greatly appreciated.
Many thanks

Tim
Did you follow the guide here:
How to Scale Up SAP Exchange Infrastructure 3.0
Learn what the most likely scaled system architecture looks like, and read about a step by step procedure to install additional dialog instances. The guide also walks you through additional configuration steps and the application of Support Package Stacks.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c3d9d710-0d01-0010-7486-9a51ab92b927
We followed this guide for XI3.0 and PI7.0 and works successfully!

Load balancing across multiple machines

I am looking for assistance in configuring Tuxedo to perform load balancing across
multiple machines. I have successfully performed load balancing for a service
across different servers hosted on one machine but not to another server that's
hosted on a different machine.
Any assistance in this matter is greatly appreciated.

Hello, Christina.
Load balancing with multiple machines is a little bit different than
in the same machine. One of the important resource in this kind
of application is network bandwidth, so tuxedo tries to keep the
traffic among the machines as low as possible. So, it only
balance the load (call services in other machine) in case all the
services are busy in the machine where they are call.
I mean, if you have workstation clients attached only to one
machine, then tuxedo will call services in this machine untill
all servers are busy.
If you want load balancing, try to put one WSL in each machine,
and the corresponding configuration in your WSC ( with the | to
make tuxedo randomly choose one or the other) or spread your
native clients among all the machines.
And so, be carefull with the routing!
Ramón Gordillo
"Christina" <[email protected]> wrote:
>
I am looking for assistance in configuring Tuxedo to perform load balancing
across
multiple machines. I have successfully performed load balancing for a
service
across different servers hosted on one machine but not to another server
that's
hosted on a different machine.
Any assistance in this matter is greatly appreciated.

ACE30 load balancing across two slightly different rservers

Hi,
is there a possibility to get a load balancing across two rservers so:
when client sends http://vip/ and it goes to rserver1 then url is sent without change
when client sends http://vip/ and it goes to rserver2 then url is modified to http://vip/xyz/
Or maybe load balancing can be done across two serverfarms ?
thanks

Ryszard,
I hope you are doing great.
I do not think that´s possible since the ACE just load balance the traffic to the servers and once the load balance decision has been taken it will pass the "ball" to the chosen server.
Think about this, let´s say user A needs to go to Server1 but guess what? based on the load balance decision it was sent to Server2 which unfortunately does not have what the customer was looking for. OK, fine, user A close the connection and tries again but now the Server1 is down then the only available is Server2 then the ACE sends it to Server2 again then user A just decides to leave, you see how bad that can be.
A better approach would be to have either 2 VIPs ( different IP addresses) or 2 with the same IP address but hearing on another port, perhaps, one port per server.
Hope this helps!
Jorge

Load balancing across database connection

Do you provide load balancing across database connections and allow RDBMS load
balancing for read only access?
Thanks in advance.

Hello, Christina.
Load balancing with multiple machines is a little bit different than
in the same machine. One of the important resource in this kind
of application is network bandwidth, so tuxedo tries to keep the
traffic among the machines as low as possible. So, it only
balance the load (call services in other machine) in case all the
services are busy in the machine where they are call.
I mean, if you have workstation clients attached only to one
machine, then tuxedo will call services in this machine untill
all servers are busy.
If you want load balancing, try to put one WSL in each machine,
and the corresponding configuration in your WSC ( with the | to
make tuxedo randomly choose one or the other) or spread your
native clients among all the machines.
And so, be carefull with the routing!
Ramón Gordillo
"Christina" <[email protected]> wrote:
>
I am looking for assistance in configuring Tuxedo to perform load balancing
across
multiple machines. I have successfully performed load balancing for a
service
across different servers hosted on one machine but not to another server
that's
hosted on a different machine.
Any assistance in this matter is greatly appreciated.

Advantages of using a webserver inbetween a load balancer and application servers

I am building out a new weblogic domain.
I am wondering which one of these configuration to go with:
1. Load balancer > weblogic servers
2. Load balancer > web server > weblogic servers
Could someone tell me what are the specific advantages of having web servers inbetween a load balancer and application servers (besides caching static data content and acting as a proxy)?
Thanks in advance
Srini

Other than hosting the static content, nothing much really. We have our load balancer go straight to WL for applications without static content and route to web server if there is static content. Easy enough to do it both ways, best of both worlds.

Load balancing across DMZs - Revisited

I know this question has been asked before and the answer is to have separate content switches per DMZ in order to maintain the security policy. There is an option to have the content switch in front of the firewall and then use only one content switch to load balance across multiple DMZs. Is this an acceptable design or the recommendation is to have a separate content switch behind the firewall for each DMZ of the firewall?
Can a Cisco 6500 with CSM be configured for multiple layer 2 load balanced VLANs thus achieving a mutiple DMZ load balancing scenario with only one switch/CSM?

How do you connect the router to the firewall ?
Problem is the response from the server to a client on the internet.
Traffic needs to get back to the CSS and if the firewall default gateway is the router, the response will not go to the CSS and the CSS will reset it.
If you configure the default gateway of the firewall to be the CSS, than all traffic from your network to the outside will go through the CSS.
This could be a concern as well.
If you don't need to know the ip address of the client for your reporting, you can enable client nat on the CSS to guarantee that server response is sent to the css without having the firewall default gateway pointing at the CSS.
Gilles.

Load balancing across multiple paths to Internet

Hello,
I have a 2821 router. Currently, I have two bonded T-1 circuits to the Internet.
I would like to add a DSL circuit to augment the T1s. I would also like to load balance across all of the circuits. Currently, IOS performs inherent load balancing for the T1 circuits. The DSL circuit is from a different provider than the T1s.
The T1s are coming from a local ISP that runs no routing protocols within their infrastructure. (They run static routes and rely on the upstream provider for BGP.) The DSL provider is a national telecom carrier.
What is the best way to perform load balancing for this scenario?

Here is the answer (sort of) for anyone reading this post with the same question:
No matter which way I choose to do it, the trick is to have the local ISP subnet advertised via BGP through both pipes. The national telecom DSL provider will not advertise a /20 subnet down a DSL pipe. (Ahh, why not? =:)
Had the secondary pipe been a T-1,T-3, or other traditional pipe, I could have used a load balancer like a BigIP, or FatPipe device or possibly CEF within the IOS.
Case closed. Thanks to everyone that took a look.
Doug.

Load balancing multiple J2ee servers - each running it's own CI

Is it possible to load balance multiple J2ee servers(running Portal), both running it's own Central Instance?
We do not have the resources (SAN storage) to implement MSCS for Portal...so instead we want to use two complete Portal servers HW load balanced with the ability to keep running in case one fails.
thanks for any info !
Linwood

Hi Linwood,
in a nutshell, the difference between an ordinary J2EE server instance and the central instance are the central services. The central services (enqueue server, message server) are only needed once. Basically, they are required for the communication between the server instances (and to the load balancer). What you should go for is a cluster installation with one central instance and another ordinary server instance (both running the SAP NetWeaver Portal). But be aware that you have to use the same database for both server instances (otherwise you cannot guarantee consistent data).
For load balancing the two server you can use the SAP Web Dispatcher or any other load balancer tool you like.
You will find more and detailed information on load balancing in the SAP Library. Have a look into section <a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/2e/611724f410254ca12a3f396ec5ae85/frameset.htm">Java Cluster Architecture</a>.
Hope I could help!
Best regards,
Martin

Server Load-balancing Across Two Data centers on Layer 3

Hi,
I have a customer who would like to load balance two Microsoft Exchange 2010 CAS Servers which are residing across two data centers.
Which is the best solution for this? Cisco ACE or Cisco ACE GSS or both?

I would go with source natting the clients ip addresses, so that return traffic from the servers is routed correctly.
It saves you the trouble with maintaining PBR as well.
Source NAT can be done on the ACE, by applying the configuration to either the load balancing policy, or adding the configuration to the class-map entries in the multi-match policy.
Cheers,
Søren
Sent from Cisco Technical Support iPad App

Solution load Balancing for two Servers run Sun One Web Server 7.0

Hi All ,
I must configure load balancing web server for two server . Could you tell me Solution ?
Please help
Thanks .

The following should help you configure Web Server to reverse proxy (load balance) to your two backend servers.
[http://blogs.sun.com/amit/entry/setting_up_a_reverse_proxy|http://blogs.sun.com/amit/entry/setting_up_a_reverse_proxy]

Load balancing for CORBA servers not happening

We have configured 10 instances of a corba server, 5 each in two separate server groups. In the ubbconfig file, I have set "LDBAL Y", expecting that the load will be spread equally among the 10 severs. What is happening is that, load is spread between two servers, one in each server_group. (The last one specified for each group) Other servers in each group got very few requests and few servers got 0 load.
What do I need to do, in order to spread the load almost equally among the 10 servers, similar to what we get, when we use MSSQ, in non-corba tuxedo servers?
This is a single domain single machine environment.
James

Hi James,
As I believe the whitepaper Ed pointed to you probably explained, what you are likely seeing is normal behavior for load balancing. Assuming that you aren't dealing with issues associated with active objects and that requests to active objects are going to be sent to the server where the object is active, then you seeing normal behavior.
Roughly speaking, in determining what server to give a request to, Tuxedo scans the list of available servers and places the request on the server with the least amount of work queued. If not work is queued for a server, it will place the request on that servers queue. Also, the scan of servers is always done in the same order. So unless your servers are quite busy, the first server will handle most of the requests. Only when that server is busy will Tuxedo go to the next server, and so on. So the only way the 5th server is going to get a request queued to it is if the previous 4 servers are busy.
Note that unless you are using parallel objects (user controlled concurrency), Tuxedo will always send the request to a server in the same group as the server that created the object. So in your example, if the factory that created the object was in group 20, all requests to that object are going to go to a server in group 20.
Regards,
Todd Little
BEA Tuxedo Chief Architect

Load Balancing For OIM servers in hyper V

Hi All,
I am very new to load balancing. I am trying to implement load balanceing in our current production setup.
Our current production setup is as below:
Virtualization Platform : Hyper V
Guest OS : RedHat Linux
OIM server : Two OIM servers in clustered mode without any load balancer
As we don't have any load balancers, transactions are not getting distributed between the two application servers. Which is impacting the performance.
First of all can we implement load balancer without impacting much to the application servers. What is the best load balancer that is suitable for our current setup.
It will be great help if you can share some links for the same.
Thanks,
Biswa

Hi All,
I want to mention few more details about our OIM implementation and what we are trying load balance.
SAP HRMS is the trusted source for OIM. We recieve IDOCs for user creation, modification and disable from SAP through JMS queue. OIM doesn't recieve any http transactions.
My understanding is we need to load balance JMS queue. Please confirm
Thanks,
Biswa

IPTV load balancing across broadcast servers.

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