NLoad Balancing Stackable Switch

Transcription

1 NLoad Balancing Stackable Switch Now you can implement load balancing when and where you need it to support all your information applications. The, the most recent addition to the Avaya P330 stackable switch solution, provides cost-effective load balancing and multilayer switching in a single box. Combined with the other members of the Avaya P330 switch family, the P333R-LB completes your stackable switch solution. The demands placed on your network for faster, Highlights non-stop access to information have highlighted two key areas for improvement availability and Load Balancing bandwidth. Server farm load balancing including HTTP, FTP, DNS, TCP and UDP Users expect 24/7 uptime, not excuses. Adding the Firewall load balancing solution to your network allows Application and cache redirection for you to use the inherent resilience of load balancing transparent caches to ensure high availability. Moreover, the user sees improvements without the reconfiguration. Policy-based load balancing Variety of load balancing and persistence schemes Servers, firewalls, and other network devices can Variety of health and load checks suffer from session overload users experience a Redundancy using VRRP slow down in response time. By spreading the load over several devices, the P333R-LB switch provides Simultaneous running of all load balancing transparent relief to the bottleneck. applications General Switch The switch has 24 10/100BASE-T ports, an expansion slot that takes standard X330 expansion modules, and a stacking slot for creating stacks. Integrated load balancing and multilayer switching in a single switch One P333R-LB provides load balancing and Layer 3 IP switching for an entire network Multiple P333R-LB switches provide load sharing and redundancy Up to 10 switches in one stack End-to-end QoS and Access Control Routing standards support: RIP 1, RIP 2, OSPF, ARP, ICMP and DHCP/BOOTP Relay Communication without boundaries

2 P880 This application illustrates the multiple levels of redundancy with server load balancing: Each server is connected to a separate switch. Combined with VRRP and redundancy, this configuration provides a fully redundant server load balancing solution. Load Balancing Today, businesses rely on the ability to conduct transactions and support customer relationships over the. However, traditional network equipment is not sufficient for the increasing demands to scale session capacity and optimize data session flow. This increasing demand for data sessions, whether directed at a Web hosting site or at an enterprise providing clients with data (internally or externally), requires high-performance Web infrastructure products that can intelligently handle the flow of session requests. The trend of increased traffic to servers that are hosting mission-critical data and services has led to the development of new high-performance products that serve to act as a front end for the traffic directed to servers and server farms. Switches not only provide high performance within a network, but now offer features for traffic management and scalability at the front end of Web servers and enterprise server farms. The switches provide the infrastructure for content, supporting transactions and managing customer relationships over the. This functionality is called load balancing. Load balancing is the ability to intercept network sessions and intelligently distribute them among a group of servers located behind the device in order to keep all sites on the servers available. The switch dynamically and intelligently directs content requests to the best server at that moment. Server Load Balancing Server load balancing allows you to divide the load among a number of servers, ensuring that users receive the service they expect. Adding load balancing not only improves speed, but also reliability since if one server fails, another can take over without the user noticing any change. Avaya P330 Redundant Avaya P882 Virtual IP A IP IP IP IP Installing one or more stackable load balancing switches as the server farm switch allows you to easily implement server load balancing. The server farm appears as a single Virtual IP (VIP) address to the outside world, so you can deploy multiple servers for increased throughput and redundancy with no disruption. Server load balancing ensures complete flexibility and control of a local server farm that deploys applications across multiple servers for scalability and availability. Application performance, availability, and scalability Avaya P580 are also increased by transparently distributing user requests across these local server farms. The switch decides which server is assigned a new connection based on your load

3 Firewall Load Balancing no NAT VRRP balancing method configuration. The P333R-LB switch supports several load balancing methods for optimal use of servers: Round Robin new sessions are started on the next available server in a logical group: all servers are treated as equal. Hash based on the source IP address. The address is indexed in a table listing all the servers, so all requests from that IP address are sent to the same server. Response-Time Based assigns requests to the server that ensures the best response time. Session Persistence: Ensures that all requests from a user are sent to the same server so definitions and details are retained. This is especially important for ecommerce applications. Health Checking: Ensures that requests are only sent to active servers. Real Server and Real Server Group backup: You can locate physical backups for logical servers/ server farms anywhere on the network for maximum availability. Firewall Load Balancing The P333R-LB switch can balance loads across multiple firewalls and VPNs. A common application is to locate load-balancers on both sides of multiple load-balanced firewalls. The persistent support ensures that connections for a particular session flow through the same firewall. To ensure availability, the P333R-LB switch performs continuous health checks on the links to the firewall and other switches in the network. Firewall Load Balancing with NAT IP a VRRP If any component fails along the path between the load balancing modules, the modules will automatically redirect traffic to an alternate firewall. Redundancy is another differentiator. The firewall is in a critical location in the network, so typically multiple load balancing devices are used in hot-standby configuration. Application Redirection Application redirection maximizes availability and throughput for applications such as cache redirection and content checking. Redirection: the P333R-LB switch does this by identifying traffic and forwarding user requests to an appropriate cache server. It eliminates the need to configure proxies on users computers. This improves response time for users, conserves WAN bandwidth, and boosts server performance. A similar approach can be used for non-cache applications, such as content inspection. One use for this is allowing you to redirect content for virus checking. VRRP IP b Firewall Load Balancing In the above application, two switches are connected to two firewalls to provide ultimate resilience. Redundant connections and VRRP between the switches ensures that even if one device fails, there will be no disruption to interactions with the. Redirection (below) Load balancing and redundancy both within and between cache server farms provides optimal performance and reliability. Even if a server or a P333R-LB switch fails, full cache redirection is maintained. b.com c.com... a.com a.com b.com c.com Communication without boundaries

4 Policy-based management keeps you in control of a key business resource your network. Just as with resources such as finance, you need to make your network match your business needs. Policy-based management allows you to control traffic and access to services. Silver Gold Policy-Based Load Balancing Policy-based load balancing allows you to provide different levels of service in addition to load balancing. Thus you can define users (based on IP address and/ or TCP/UDP ports and/or DiffServ Marking) who should receive better service and the P333R-LB switch will direct them to the optimal load-balanced server farm according to rules you define. You could use this application within the organization to give key departments faster access to important information by defining specific servers for specific users. You could map important users to server farms with more or faster servers. Another application is giving preferred service to high-priority customers. Users are directed to a server farm that can provide an appropriate level of service. If necessary, the P333R-LB switch will automatically map users to the other server farms to ensure levels of service. In this application, the is deployed in a rack to provide simultaneous Server and Firewall Load Balancing and Redirection in a single, compact switch. Silver Gold Router Firewall Firewall Server Farm Gold Server Farm Silver Resilience = High Availability Avaya is committed to providing the equipment that allows todays networks to operate 24/7. The switch has multiple resiliency techniques to give maximum availability. VRRP provides redundancy between P333R-LB switches, so if one fails another can take over the Layer 3 and 4 switching for five nines uptime. Avaya SAFER Technology uses multiple levels of redundancy (port, stack,, switch, and power supply) to ensure that your network always delivers. The is NEBS Level 3 certified for the toughest environmental conditions. Optimization & Cost Benefits Optimize the current resources in your network for better performance and efficiency at a minimum effort and a minimum investment. As the creates increasing demands on your, Avaya switches keep up with the demands so you don't need a forklift upgrade. One P333R-LB switch adds load balancing and routing to your current equipment with a minimum investment in new equipment or training. Ease of Implementation With the Avaya P330 s wide range of 10/100/1000 and ATM Access expansion modules in the P333R-LB, you can deploy load balancing in almost any network. As part of the Avaya P330 stackable switch solution, the P333R-LB shares the same user interface and basic feature set. Implementation is quicker since the learning curve is reduced. Routing The switch uses standard routing protocols, providing load balancing and multilayer switching in a single unit.

5 Quality of Service (QoS) and Access Control The switch enforces centralized network policies at the edge using Avaya Cajun Campus Policy-based management. This means that traffic is classified before it reaches the backbone so high-priority traffic such as Voice over IP (VoIP) receives the end-to-end QoS it needs. Layer 2 and Layer 3 access security ensure that sensitive data is kept from prying eyes. Based on predetermined parameters and the policy rules, access to packets is either permitted or denied. These access rules, as with the QoS definitions, can be defined using CajunRules Policy Manager or the command line interface (CLI). Anylayer Network Management Avaya realizes the importance of comprehensive network management as a key component of today s networks. Therefore we have provided multiple ways of managing the switch: Avaya P330 Manager (via Web or CajunView Suite): allows you to configure all Avaya P330 features, including load balancing, using a consistent interface. CajunView Enterprise Network Management System: When you need extra control and monitoring. CLI: The CLI (command line interface) provides a rich set of functions and is consistent with other Avaya Cajun Campus products for ease of use. Remote Access: You can operate the CLI from a terminal or via secure Telnet to the switch. Anylayer Network Monitoring The supports Avaya s groundbreaking SMON Switched Network Monitoring, which the IETF adopted as a standard (RFC2613). SMON provides an unprecedented top-down monitoring of switched network traffic at multiple network levels. This top-down approach gives you rapid trouble-shooting and performance trending to keep the network running optimally. Avaya has maintained its leadership in switch monitoring by developing AnyLayer SMON, which brings SMON to Layer 3. This feature, included in the P333R-LB switch, allows you to monitor protocol distribution and provides information on individual IP hosts and matrices of IP traffic. RMON and RMON II: The Avaya P330 supports the RMON I (RFC 1757) and RMON II (RFC 2021) standards. Port Mirroring: A network analyzer can be connected to any port on the stack. Traffic from any other port can be mirrored to the network analyzer for in-depth examination. One simple interface. All the features. With a few mouse clicks you can configure all the advanced load balancing features without switching between applications. Moreover, the P333R-LB Manager uses the familiar CajunView interface to make it easy to use. Communication without boundaries

6 Avaya P330 Application This application shows how the components of the Avaya P330 work together to create a complete stackable solution. Load balancing, high-density multilayer Gigabit Ethernet, and advanced Layer 2 switches combined with a wide variety of connectivity options give you the power and flexibility you need. 10/100 Mbps Ethernet Avaya P333T 10/100 Mbps Ethernet 10/100 Mbps Ethernet Redundancy Avaya P333T Gigabit Ethernet Avaya P332GT-ML Gigabit Ethernet Avaya P333T 10/100 Mbps Ethernet Redundancy Avaya P332GT-ML Data Center Avaya P332G-ML Avaya P332G-ML Data Center Avaya P882 4x100 Mbps Specifications Interfaces 24 10/100BASE-TX ports with RJ connectors Expansion slot for X330 modules Stacking slot RS-232 for terminal setup/modem and PPP Standards Supported IEEE 802.3x Flow control on all ports IEEE 802.1Q/p V Tagging and priority compatible on all ports IEEE 802.1D Spanning Tree protocol IEEE 802.3z ports IETF MIB-II, Bridge MIB, RMON, SMON, IP Forward MIB Routing: RIP 1, RIP 2, OSPF, VRRP, ARP, ICMP and DHCP/BOOTP Relay Physical Characteristics Dimensions 2U (3.5"/88 mm) 19" (h, w, d): (482.6 mm) 17.7" (450 mm) Environmental Conditions Operating Temp: 23 to 122 o F ( 5 to 50 o C) Humidity: 5% to 95% non-condensing Power Consumption Power Entry (AC): VAC, 2A, 50/60 Hz Power Consumption: 150W max. Agency Approval EMC Emission: Immunity: Safety: CLEI CODE NEBS Level 3 AC version: DC version: US FCC Part 15, Subpart B, Class A Europe EN55022 class A and EN Japan VCCI-A Approved according to EN55024 and EN UL for US approved according to UL1950 Std. C-UL (UL for Canada) approved according to C22.2 No.950 Std. CE for Europe approved according to EN Std According to Telcordia (Bellcore) KS standard With optional brackets Certified 2001 Avaya Inc. All rights reserved. Printed in the U.S.A. 05/01 EF-EIS1398 For a contact in your area, go to: avaya.com