Avaya P333R-LB manual Low, Direct Server Return DSR Triangulation Redirection

Models: P333R-LB

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Chapter 14 Load Balancing in the P333R-LB

P333R-LB-1(super-v-srvr:slb)#virtual-slb-service http

Done!

P333R-LB-1(super-v-slb-srvc:slb:http)#id 1

Done!

P333R-LB-1(super-v-slb-srvc:slb:http)#application tcp 80 Done!

P333R-LB-1(super-v-slb-srvc:slb:http)#pip-bank 1

Done!

P333R-LB-1(super-v-slb-srvc:slb:http)#rsgserver-groupDone!

P333R-LB-1(super-v-slb-srvc:slb:http)#exit

P333R-LB-1(super-v-srvr:slb)#exit

P333R-LB-1(super)#

To insure that the packets destined to the PIP address reach the P333R-LB on the return path from the Real Server to the client, you must configure a Static Route in the router by entering: ip route 10.3.3.0 255.255.255.0 193.170.3.1 1

low

Note: The above configuration example stresses that even when there is a direct path from the router to the clients, with Full NAT the traffic is forced to traverse the P333R-LB for PIP-client IP translation. With Half NAT, in such a scenario, load- balanced sessions would have failed. This is because traffic from the Real Servers would have been routed directly to the clients, before reaching the P333R-LB. The clients expect a reply from the VIP, but instead would receive the reply from the real IP, and drop the packets.

Direct Server Return (DSR) (Triangulation) Redirection

In Direct Server Return (Triangulation) redirection, the redirection is based on replacing the destination MAC address with that of the Real Server. The Real Server is configured to send responses to the clients with the VIP as the source address. As a result, traffic is not required to traverse the load balancer.

Note: You can not implement DSR for Services using Full NAT, since the P333R-LB must replace the PIP with the original client IP for the returning packets.

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Avaya P333R-LB User’s Guide

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Avaya P333R-LB manual Low, Direct Server Return DSR Triangulation Redirection

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.