WebLogic Server provides failover within MAN and WAN networks. This feature provides more reliability by allowing failover to occur across a larger geographic area. It also provides failover across multiple WebLogic Server domains.
To provide failover within a MAN/WAN environment, you must use hardware load balancers. This document outlines the procedures for configuring F5 hardware load balancers to work with WebLogic Server.
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For information on configuring WebLogic Server to use MAN/WAN, see Session State Replication Across Clusters. For information on configuring F5 hardware load balancers, see www.F5.com.
The following sections describe how to configure F5 hardware load balancers.
Requirements
Before performing the procedures described in this appendix, you must have performed the following:
Once these requirements are met, perform the following procedures to configure your load balancers to work within a MAN/WAN environment.
Configure Local Load Balancers
This section describes the procedures for configuring F5 local load balancers to work with WebLogic Server in a MAN/WAN environment.
Virtual Server IPs and Pools
On each local load balancer you must configure two virtual server IPs as well as a multi-layer pool and a failover trigger pool. The following diagram shows how these pools and virtual server IPs work within a MAN/WAN environment. Konica minolta ms6000 mkii user manual.
Figure 0-1 Hardware Load Balancers in a MAN/WAN Environment
In this diagram, multiple managed servers are distributed across separate physical locations. This diagram shows individual managed servers, but this could also represent a clustered configuration as well.
Each local load balancer contains a virtual server IP that references a multilayer pool. The multilayer pool references each of the local WebLogic Server IP addresses and host names and the virtual server of the failover trigger pool. The failover trigger is used to indicate that a site is down. This triggers failover to the other local load balancer.
The following sections describe how to configure multi-layer and failover trigger pools.
Create a Failover Trigger Virtual Server and Pool
Create a new BIG-IP pool on the local load balancer that references each of the local WLS server hostnames and ports to be load-balanced. Then, create a new virtual server that specifies this pool. This virtual server will be utilized by the 3-DNS global load balancer for health monitoring and will later be embedded inside another local load balancer pool/virtual server.
Create a Multi-layered Virtual Server and IP Pool
Using the F5 administration utility, create a new BIG-IP pool on the local load balancer that references each of the local WLS server host:ports and also the failover-trigger virtual server. The failover-trigger virtual server must be a lower priority than the WLS Servers. By assigning a lower priority, the failover-trigger virtual server will never receive client requests unless all the WLS servers have failed. Session persistence should be configured also.
Configure the 3-DNS Global Hardware Load Balancer
A global load balancer type of network hardware that acts as an authoritative DNS server and can distribute web requests across multiple BIG-IP virtual servers based on chosen criteria. Clients send http requests to the global load balancer, which uses built in health monitors to direct the web requests to the optimal server based on the chosen method of load balancing.
The global load balancer must be an authoritative source of DNS because a regular DNS server is incapable of the monitoring that the global load balancer can perform. A regular DNS server would still send http requests to a server that was down if it were next in the default round robin load balancing method. In order to compensate for the multiple shortcomings of a regular DNS server, many vendors (including F5) have created specialized hardware and software that is capable of performing not only DNS resolution but also intelligent routing of network traffic.
The primary steps of configuring an F5 3-DNS global load balancer are: defining its DNS name, configuring the BIG-IP hosts, configuring data centers, and configuring the 3-DNS distribution of work to the virtual servers (VIPs). These are covered in the following sections.
Configure DNS Zones
The global server load balancer must be configured to manage its own DNS zone. This is done by creating a new delegation on the local DNS management machine. The following procedures describe how to configure DNS zones.
Configure BIG-IP Addresses Managed by 3-DNS
The 3-DNS global balancer needs to be configured with the addresses of the BIG-IP local load balancers. The following procedures outline how to configure BIG-IP addresses:
Configure Data Centers
In most cases, global load balancers spread service requests to virtual servers in multiple physical sites. These sites are called data centers and you must create two of them. Data centers resolve to the two different subnets of BIG-IP local load balancers.
Configure Wide IPs
It is recommended that you configure the 3-DNS device so it will distribute requests evenly to servers in a VIP in one data center. If these servers fail, they should fail requests over to a VIP in the other data center. In order to do this, a wideip address must be created. This wideip address will be the target of client requests, and can be given a fully qualified domain name. The Wide IP defines how connections are distributed to local load balancer virtual servers.
The following procedures describe how to configure wide IPs:
Configuring WebLogic Server Components
After you have configured your F5 devices, you must configure WebLogic Server to use MAN/WAN failover. For information on configuring WebLogic Server to use MAN/WAN, see Session State Replication Across Clusters in a MAN/WAN. Motorola hand scanner n410 manual download.
F5 Networks, Inc. is a transnational company that specializes in application services and application delivery networking (ADN). F5 technologies focus on the delivery, security, performance, and availability of web applications, including the availability of computing, storage, and network resources. F5 is headquartered in Seattle, Washington, with additional development, manufacturing, and administrative offices worldwide.
Dell inspiron 15 5570 user manual. F5's offering was originally based on a load-balancing product, but has since expanded to include acceleration, application security, and DDoS defense. F5 technologies are available in data center and cloud environments.
F5 Load Balancer Pdf
Corporate history[edit]
F5 Networks, originally named F5 Labs,[3] was established in 1996.[4]
F5's first product (launched in 1997)[5] was a load balancer called BIG-IP. When a server went down or became overloaded, BIG-IP directed traffic away from that server to other servers that could handle the load.
In June 1999, the company had its initial public offering and was listed on the NASDAQ stock exchange with symbol FFIV.[6]
In 2010 and 2011, F5 Networks was on Fortune's list of 100 Fastest-Growing Companies.[7] The company was also rated one of the top ten best-performing stocks by S&P 500 in 2010.[8]F5 was also named a Best Place to Work by online jobs and recruiting site Glassdoor in 2015 and 2016.[9]
Competitors included Cisco Systems (until 2012),[10]Citrix Systems, and Radware.
F5 Load Balancer Models
François Locoh-Donou replaced John McAdam as president and CEO on April 3, 2017.[11]
F5 Load Balancer Setup
On May 3, 2017, F5 announced[12] that it would move from its longtime headquarters on the waterfront near Seattle Center to a new downtown Seattle skyscraper that will be called F5 Tower. The move will occur in early 2019.
In 2017 F5 launched a dedicated site and organization focused on gathering global threat intelligence data, analyzing application threats, and publishing related findings, dubbed “F5 Labs” in a nod to the company's history. The team continues to research application threats and publish findings every week to benefit the broader security community.
In 2019 F5 Networks occupies a leading position in the ranking of the most popular companies in Wikipedia.[13][dubious]
Acquisitions[edit]
Products[edit]BIG-IP[edit]
https://odheavy.weebly.com/acer-aspire-6930-user-manual-download.html. F5's BIG-IP product family comprises hardware, modularized software, and virtual appliances that run the F5 TMOS operating system.[27][28] Depending on the appliance selected, one or more BIG-IP product modules can be added.Offerings include:
BIG-IP history[edit]
On September 7, 2004, F5 Networks released version 9.0 of the BIG-IP software in addition to appliances to run the software. Version 9.0 also marked the introduction of the company's TMOS architecture,[29] with significant enhancements including:
Subsequent releases enhanced performance, improves application security, and supported cloud application deployments.
BIG-IQ[edit]
F5 describes BIG-IQ as a framework for managing BIG-IP devices and application services, irrespective of their form factors (hardware, software or cloud) or deployment model (on-premises, private/public cloud or hybrid). BIG-IQ supports integration with other ecosystem participants such as public cloud providers, and orchestration engines through cloud connectors and through a set of open RESTfulAPIs. BIG-IQ uses a multi-tenant approach to management. This allows organizations to move closer to IT as a Service without concern that it might affect the stability or security of the services fabric.[24]
Silverline[edit]
Silverline is a cloud-based application service. Its offerings include security services such as WAF and DDoS protection services.
Cloud, container and orchestration solutions[edit]
In 2017, the company introduced technologies to make F5 capabilities more portable across a broader range of IT environments, including:[32]
References[edit]
External links[edit]
Coordinates: 47°37′20″N122°21′49″W / 47.622219°N 122.363493°W
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