Avaya P333R-LB Load Balancing Stackable Switch Load Balancing Application Guide May 2001
Ta b l e o f C o n t e n t s : Section 1: Introduction Section 2: Application 1 — Server Load Balancing Section 3: Application 2 — Firewall Load Balancing Section 4: Application 3 — Application Redirection Section 5: Application 4 — Policy-Based Load Balancing Communication without boundaries
Introduction Today, businesses rely on the ability to conduct The Growth of eBusiness Applications: The explosive over the Internet. Delay-free access to information growth in critical eBusiness applications has created is the key to businesses running smoothly. the need to distribute application services over suitable to respond to the increasing demand on availability and performance.
The P333R-LB Price/Performance The P333R-LB enhances the P330 stackable switch However good a product is, it must deliver the solution by providing full load balancing and performance you need at a viable price. The P333R-LB routing functionality in a single switch. provides all your load balancing needs in a single, compact switch.
Application 1— Server Load Persistency. Persistency is important since it ensures Balancing that users receive consistent and uninterrupted responses to their requests. Server load balancing allows you to provide high availability and overcome bottlenecks caused by Persistency is especially important in eCommerce limitations in the servers.
• The Load Balancing Process Session address translation performed on every packet The P333R-LB selects the best available physical server upon receiving a new session request based This process is transparent both to the user and on the following: to the server, so no configuration is required (unlike proxy servers, for example).
Application 2 — Firewall No single point of failure. The doubling up of the key Load Balancing components ensures that communication between the LAN and Internet is always maintained. Firewalls can inherently constitute a bottleneck since they are software-based. There is also the If one P333R-LB fails, due to VRRP, the second issue of transparent availability: firewalls can act switch can instantaneously take over all load as a single point of failure, causing severe problems balancing functions.
Application 3 — Application Solution to the Problem: With cache redirection, the Redirection user does not need to configure anything: they are Application redirection is the diversion of traffic Load balancing identifies Internet traffic, “snatches” from certain applications to a different direction the packets and diverts them to the cache. convinced they are accessing the Internet directly. than the original one without the user/source being aware or requiring any reconfiguring.
A p p l i c a t i o n 4 — P o l i c y-B a s e d Advantages: Other load balancers on the market Load Balancing redirect traffic based only on a division of users and Policy-based load balancing allows you to provide Avaya’s policy-based load balancing gives the best tiered services. Preferred users receive better use of current resources by continuously checking service/access and you can charge those customers the status of the “Gold” and “Silver” groups.
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