The Load Balancing Process

The P333R-LB selects the best available physical server upon receiving a new session request based on the following:

Server health (based on application health, not just server status)

Number of open sessions

Round Robin

Hash

Persistence: Subsequent packets in the same session sent to the same server until the session terminates.

Session address translation performed on every packet

This process is transparent both to the user and

to the server, so no configuration is required (unlike proxy servers, for example).

Unlike simple load-balancers, the Avaya load balancing solution supports multiple persistence methods. This enables the P333R-LB to fully support eBusiness applications that require continuous communication between the client and server throughout a transaction session. The following persistence methods are supported:

IP address hashing

Source address with inactivity timer

High Availability with Cajun

The special configuration below shows how each element is fully backed up to provide maximum uptime:

Server fails—The P333R-LB senses the loss of the server and directs all new sessions to the other servers that are available in the farm.

P333R-LB fails—enhanced VRRP ensures transparent switchover to the second switch. A special topology ensures the server connection to the network.

Uplink fails—STA and port redundancy bring the backup LAG on-line instantaneously.

Avaya P330

Server Farm

Virtual IP A

IP1 IP2

IP3 IP4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gigabit Ethernet with LAG

Redundant

LAG

Avaya P333R-LB

Avaya P333R-LB

Gigabit Ethernet with LAG

Avaya P882

Avaya P580

*future

 

4

Communication without boundaries

Page 6
Image 6
Avaya P333R-LB manual Load Balancing Process

P333R-LB specifications

The Avaya P333R-LB is a robust and versatile switch that is part of Avaya's portfolio aimed at enterprise networking solutions. This switch is designed to enhance the performance and scalability of network infrastructure while ensuring high availability and reliability.

One of the main features of the P333R-LB is its Layer 3 switching capability, which allows for efficient routing within an organization's network. This capability is particularly beneficial for organizations with multiple VLANs, as it simplifies the routing process and ensures that data packets are transmitted in the most efficient manner possible.

The P333R-LB is equipped with advanced Quality of Service (QoS) features to prioritize traffic based on the type of application being used. This ensures that critical applications, such as VoIP and video conferencing, receive the necessary bandwidth and low latency required for optimal performance. Additionally, it supports both IPv4 and IPv6 protocols, making it adaptable to a variety of networking environments.

Another important feature of the Avaya P333R-LB is its stackable design. This allows multiple switches to be interconnected, creating a single logical unit. This stacking capability not only simplifies management but also increases overall network capacity and redundancy. In case of a hardware failure, the stack can continue operating without interruption, maintaining network integrity and service continuity.

The switch also integrates advanced security features, including support for MAC filtering, access control lists, and port security. These features help to safeguard network resources from unauthorized access and potential threats. Moreover, the P333R-LB supports 802.1X port-based authentication, which adds an additional layer of security during user access to the network.

The Avaya P333R-LB comes with multiple Gigabit Ethernet ports, allowing for high-speed connectivity to devices such as servers, workstations, and IP phones. This ensures that all devices on the network can communicate effectively, supporting the demands of modern enterprise environments.

For management and monitoring, the P333R-LB offers a user-friendly web interface along with SNMP support, enabling network administrators to easily configure settings and monitor network performance. This simplicity in management is crucial for IT teams that need to ensure optimal network performance while minimizing downtime.

In summary, the Avaya P333R-LB is a feature-rich, scalable, and reliable switch that meets the needs of demanding enterprise networks. With its advanced technologies, QoS support, stackable design, robust security features, and high-speed connectivity options, the P333R-LB is positioned to support a wide range of applications and enhance overall network performance.