S
ERVER
I
RON
™APPLICATION SWITCHES
Features
tIntelligent load balancing,Layer 7 content switching and security for mission-critical applications
tIntegrated full-function Layer 2/3 switching and routing combined with high-performance Layer 4-7 switching
tSupport for up to 15,000,000 concurrent sessions,and
56 Gbps of throughput
tHigh-availability server load balancing with stateful fail-over
tIndustry’s most powerful content switching,including URL,
Cookie,XML,HTTP Header,and SSL Session ID based switching
tHigh performance Server,Cache,VPN/Firewall and ISP link
load balancing
tWire-speed Gigabit rate protection against Denial of Service (DoS) attacks
tMost scalable Global Server Load Balancing (GSLB) with
DNS Proxy and client proximity measurements
tEase of use and manageability with IronView Network
Manager (INM)
tAlways-on network monitoring with standards-based sFlow
tSuperior support for all major streaming media protocols
tIndustry’s #1 Layer 4-7 application switch
with Modular 10 Gigabit Ethernet Support
Intelligent Layer 4-7 Application Switches
ServerIron
™Intelligent Application
Switching and Security System with
Internet IronWare
®Layer 2 through
7 Switching
Foundry Networks®’award-winning ServerIron Family of
switches provide high performance Layer 2 through 7 switching, enabling network managers to control and manage today’s exploding IP transactions, IP applications and e-commerce traffic flows. Internet IronWare, Foundry’s unique software suite of application traffic management capabilities—powers the ServerIron switches to direct requests to the right server and application based on the information that resides beyond the traditional Layer 2 and 3 packet headers. ServerIron eases escalating application traffic overload, dramatically increases service availability, maximizes utilization, reduces the burden of server farm management, and allows the entire server facility to scale to meet current and future needs.
Built on Foundry’s proven IronCore™ and JetCore™
architectures, ServerIron enables application traffic switching based on Layer 2 through Layer 7 definitions.ServerIron delivers industry-leading performance for Internet traffic management functions, including local and global server load balancing, ISP link load balancing,firewall load balancing,and transparent cache switching. ServerIron’s superior content-switching capabilities
include support for up to 256 rules based on URL, HTTP header, XML, cookie and SSL session ID content. Furthermore, ServerIron provides the foundation for high service availability, disaster recovery,location and server transparency,backbone cost control, and a consistent user experience.
ServerIron supports the following major traffic management applications:
1. Efficient Server Load Balancing (SLB)— Distribute IP-based services and transparently balance traffic across multiple servers while continuously monitoring server,application and content health.This enhances overall reliability and availability of the services while simultaneously ensuring peak server farm utilization.
2. Robust Application Security— Shield server farms and applications from wire-speed Gigabit rate DoS, DDoS, virus and worm attacks while serving legitimate application traffic.
Improve security using IronShieldTM security suite with
support for features like advanced ACLs and sFlow network monitoring.
3. Disaster Recovery and Global Server Load Balancing (GSLB)— Distribute services transparently across multiple sites and server farm locations and balance the traffic across
those sites/servers on a global basis while monitoring
site/server and application health. By directing the client to the best site for the fastest content delivery, ServerIron enhances overall application availability and reduces bandwidth costs. Site level redundancy and rapid transparent failover are supported for disaster recovery.
4. Firewall Load Balancing (FWLB)— Increase the network’s overall firewall performance by distributing Internet traffic load across multiple firewalls. Overcome firewall scalability limitations, increase firewall throughput and performance, and improve firewall resiliency by eliminating the firewall as a “single point of failure”.
5. Transparent Cache Switching (TCS)— Eliminate the need to configure each client browser, improve Internet response time, decrease WAN access costs, and increase overall web caching solution resiliency by balancing web traffic across multiple caches. ServerIron improves service availability by implementing cache health checking and redirects client requests to the next available cache server or directly to the origin server in the event of a cache or server farm failure.
6. ISP Link Load Balancing (LLB)— Significantly increase Enterprise Internet link utilization and reduce the cost of ISP service without the complexities and limitations of BGP routing.Improve bandwidth scalability with optimal capacity utilization based on intelligent traffic switching using key metrics like service response time and bandwidth price. Achieve load balancing, redundancy and resiliency on business-critical Internet links with a single application.
Key Benefits
Server and Application Availability
ServerIron ensures service availability by offering switch, server, link, and session level redundancy.
In the event of a server or application outage,ServerIron provides detection and rapid fail-over to the next server in a logical group that supports a like service. ServerIron detects application error conditions such as HTTP “404 – Object not found” before the client sees them and transparently redirects the requests to other servers without any manual intervention.
To provide 100 percent availability, ServerIron includes an active-standby or active-active redundancy capability that protects against session loss. When enabled, this feature allows network administrators to establish primary and secondary load balancing switches to support identical configuration parameters. In active-standby mode, one unit operates while the other unit sits as a backup. In active-active mode, both units operate symmetrically. In either situation, each switch continuously monitors the health of the other. In the event that
1000-SX FSRP VRRP OC-3, -12, -48 NetIron 400 NetIron 400 ServerIronXL ServerIronXL BigIron 4K 1000-SX 1000-SX 100-FX 100-FX Internet tFigure 1 2
one device fails, the other switch takes over without losing sessions or connectivity. ServerIron also supports link-level redundancy that ensures server connectivity by automatically switching sessions from a failed link to a redundant link. ServerIron’s extensive service health check capability monitors Layer 2,Layer 3,Layer 4,and Layer 7 connectivity and services and determines the servers’ ability to respond to user requests. This ensures fast detection of service problems and eliminates service outage.
Robust Security
With a rich set of advanced high-performance security features, the ServerIron acts as the last line of defense for the servers and applications from malicious clients. Using the superior performance and advanced security algorithms, the ServerIron can prevent unauthorized client requests from reaching the server and therefore substantially improving server availability. ServerIron offers the industry’s best and the most advanced security intelligence as part of the high-performance
IronShieldTM security suite. ServerIron switches protect the
networks, server farms and applications against wire-speed Gigabit DoS attacks. Only legitimate client traffic is allowed to pass through to the real servers. With sophisticated and high-performance URL, cookie, HTTP header and XML content filtering, ServerIron switches prevent viruses and worms from spreading to the application infrastructure through application messages.
Maximum Scalability
ServerIron supports high port density on both the stackable and chassis platforms, allowing for support of massive server farms and network devices such as firewalls and caches.
TrafficWorks IronWare running on ServerIron simplifies network design by enabling network managers to create a server farm, represented by a single IP address known as a Virtual IP (VIP) address. ServerIron appears as a virtual server with a VIP address that controls, monitors, and directs client requests to the most appropriate real server in a server farm. By supporting a wide selection of intelligent load balancing methods, network administrators can transparently and easily scale server capacity regardless of the server platform. ServerIron delivers these benefits without using expensive hardware add-ons or server-side agents.
ServerIron allows ISPs and enterprises to deploy GSLB to transparently expand server capacity on a worldwide basis by redirecting service requests across multiple data centers located around the world and scale application capabilities to global proportions.
For enhanced security and performance, ServerIron’s FWLB eliminates firewall bottlenecks and scales firewall implementations by balancing and distributing load across multiple firewalls. With load balancing support for synchronous, non-synchronous,Network Address Translation (NAT),Layer 2, and Layer 3 firewalls,network administrators can deploy firewalls in the most flexible and reliable manner. ServerIron supports active-standby as well as active-active FWLB configurations. ServerIron’s FWLB supports environments built on static or dynamic routing protocols including RIP V2 and OSPF.
Easy to Set Up and Manage
ServerIron is simple to configure and manage using the Foundry Command Line Interface (CLI) or built-in Web interface.The CLI uses well known Cisco-like commands allowing network administrative staff to easily configure all Foundry products. In addition, ServerIron’s support for Simple Network Management Protocol (SNMP) allows device management using applications such as HP OpenView, available on major server platforms including Sun Solaris,HP-UX,and Windows NT. Foundry’s IronView NMS application can be used to monitor and chart SLB and TCS data polled at regular intervals. Formats include bar graph, line graph, and pie chart allowing network managers to easily collect and display detailed information about network traffic destined to server farms.Network administrators can also gauge the amount of traffic between servers and clients, as well as which application is dominating network traffic. Extensive accounting and statistics allow network managers to easily collect and display detailed information about network
NetIron 400 NetIron 400 ServerIron 400 ServerIron 400 Internet tFigure 2 3
traffic destined to server farms. Network administrators can also gauge the amount of traffic between servers and clients,as well as which application is dominating network traffic. In addition, ServerIron tracks the number of active and open sessions per server.These statistics can also be used to track traffic loads on servers that support multiple applications.
ServerIron supports advanced configuration synchronization features to minimize configuration errors, and consequently network and application downtime. Using the command-by-command and block-by-block synchronization modes, administrators have the flexibility to replicate configuration on the peer ServerIron in high availability designs at the granularity they desire without manual repetition. Additionally, ServerIron products are integrated with IronView Network Manager (INM) to provide comprehensive centralized configuration management. The INM supports configuration creation, archival,comparison and tracking of configuration files for all the ServerIrons deployed in a network. Administrators are able to update configurations on multiple ServerIrons with a click of the button.
IronClad Application Performance
ServerIron delivers unmatched Layer 2 through Layer 7 switching performance.Utilizing the same proven technology of Foundry’s BigIron wire-speed switches, all ServerIron platforms contain a unique distributed switching fabric and powerful packet processing engines to deliver load-balancing capacity of over 150,000 Layer 4 connections per second including data transfer,or 600,000 connection setups per second with no session loss.As well,ServerIron scales to maintain 15,000,000 concurrent sessions.This ensures service availability during peak application traffic load and during massive denial of service attacks.
Key Features
Exceptional Performance
and Capacity
tIndustry Leader in Concurrent Session Capacity— ServerIron effectively handles over 15,000,000 concurrent connections to accommodate more client traffic as the application infrastructure experiences growing traffic demands.
tDirect Server Return (Switch Back)— Inherently asymmetrical nature of streaming media and bulk data applications requires high-throughput support.The client-to-server traffic flows through the load balancing device but the return (server-to-client) traffic, which
typically consumes more bandwidth because it contains the
information that the client has asked for, switches directly to the client on the return path. By avoiding the load-balancing device, Switch Back provides wire-speed throughput servicing the clients. tThroughput— The various ServerIron platforms provide
differentiated system performance and throughput levels from 2 Gbps with ServerIronXL, right up to 56 Gbps with ServerIron 800/850 depending on policies enabled on the ServerIron.
tSession Processing— Foundry leads the industry with real-world session processing capabilities of over 600,000 connection setups per second.
tSymmetric Load Balancing— Multiple switches can be deployed to increase load-balancing capabilities in parallel and multiply the total connection capacity and overall performance.Also known as an active-active configuration, IronWare’s symmetric load balancing provides cross-platform fault tolerance, picking up the full load where the failed switch left off without losing any state information. tSwitching Capacity— Built on Foundry’s custom ASIC designs,
ServerIronXL, ServerIron 100 Series, ServerIron 400 and ServerIron 800 respectively deliver 4.2 Gbps, 20 Gbps, 128 Gbps and 256 Gbps of total switching capacity. ServerIron 450 and 850 deliver 128 and 256 Gbps of total switching capacity.
tTrunking for Performance— Trunk groups can be configured between ServerIron switches, between ServerIron and other standards-compliant switches, or between the ServerIron switch and the server to increase overall server farm bandwidth, throughput, performance, and redundancy. ServerIronXL supports up to five trunk groups containing from two to four 10/100Base TX ports, and ServerIron 800 and 850 support up to 22 trunk groups. tIP Filters— Network managers can define up to 1024 IP filters to
selectively control SLB and TCS traffic. These dynamic filters, which take effect immediately without requiring a reboot, match on source and destination IP address, network mask, and TCP/UDP port information.
tOverflow Protection— In the event that the local servers exceed their maximum capacity, Foundry’s Internet traffic management systems can load balance the subsequent requests to remote server farms.
tMassive Server Farms— ServerIronXL supports up to 24 10/100 ports and 2 Gigabit ports, ServerIron 100 Series offers 3 models with Gigabit or Fast Ethernet copper or fiber ports, ServerIron 800 supports up to 168 10/100BaseTX ports or 56 Gigabit ports, ServerIron 850 supports up to 112 Gigabit ports in a single chassis.With support for unlimited Virtual IP addresses, and up to 2048 real servers, ServerIron switches provide the highest connectivity to server farms.
tHigh Performance Web Hosting— ServerIron’s many-to-one load-balancing features enable network managers to define multiple VIPs and track service usage by VIP. With this capability, a single server and port number can load balance multiple web sites across a shared set of real servers.
tSlow Start— To protect the server from a surging flow of traffic at startup, ServerIron implements a unique slow-start service that allows real servers to gradually accept connections when the server comes up. This is especially useful for SLB implementations using least connections as the load balancing method. Since most servers today cannot handle more than 2000 new connections per second, this feature helps ensure stability when bringing new servers online. tCookie Insertion/Deletion— This feature enables transparent
application support by allowing the ServerIron to insert cookies into HTTP requests and responses. This allows client/server persistence even when the application itself does not support cookies.
tServer Connection Offload— The ServerIron increases server performance, availability, response time and security by offloading connection management from the servers. Using persistent HTTP 1.0 and 1.1 connections to the server, the ServerIron sequentially streams large number of client-side connections to a few server-side connections. Connection offload allows the servers to focus on mission-critical high-performance application service delivery. In addition to the performance gain, the servers also get protection against DoS, virus and worm attacks from hackers because the servers never directly interact with the clients for connection management.
tMaximum Connections— Used to protect servers from bogging down due to high amounts of Internet traffic, this feature allows administrators to limit the number of concurrent connections handled by a particular server and ensures that the traffic does not outpace the performance of the server.
tEnterprise Application Support— ServerIron can be deployed in many Enterprise environments where IP-based applications are used, including the popular applications like Oracle, BEA WebLogic, IBM WebSphere, PeopleSoft and Siebel. ServerIron supports custom features for load balancing and persistence for these applications. Additionally, the ServerIron support includes VoIP, where load balancing and fault tolerance can be provided for IP PBXs, as well as database environments, CRM systems, and popular financial and production management systems.
Server and Application Health
Checks
tLayer 3— Upon configuration, ServerIron immediately and automatically health checks the server via ARP and ping to determine whether the server is ready for operation. If problems arise, ServerIron can automatically take corrective action. tLayer 4— When the network manager binds an application
(TCP/UDP port) on a real server to an application on a virtual server, ServerIron performs a Layer 4 health check, which the server must pass. This guarantees that clients do not hit “dead” servers. tLayer 7— With health checking enabled for a service (TCP /UDP
port), ServerIron can perform a Layer 7 application-specific health check immediately after successful completion of the Layer 4 health check.These include the following: HTTP, DNS, SMTP, POP3, LDAP, NNTP, IMAP4, FTP,Telnet, RADIUS, and others.
tScripted— Using scripted health checks, the ServerIron provides a flexible mechanism to check the health of applications using non-standard ports.The switch inspects the health check response messages from the server for user-configured ASCII text that indicates application health.
tBoolean— Boolean health checks offer immense flexibility by allowing to decouple health checking from the ports bound to the Virtual IP. Multiple Boolean health checks may be combined and tied to the health of any port on any VIP.
Load Balancing Method
tRound Robin— Assigns connections sequentially among servers in a logical community. Round robin treats all servers as equal regardless of the number of connections or response time.
tLeast Connections— Assigns a connection to the server with the least number of open connections.This option works well in server farms which have groups of servers with dissimilar performance capabilities. Least connections ensures adequate distribution and avoids server overload.
tWeighted Percentage— Allows managers to assign a performance weight to each server. Use weighted percentage to ensure that those servers capable of processing connections faster receive the largest number of connections.
tResponse Time— Directs requests to the server providing the best response time. Response time measurements include the network latency and the response time for the application-level health checks. tCombined Response Time and Least Connections— Directs
requests to a server based on the server and application response time, and the number of active connections on the server.
tBandwidth and Weighted Bandwidth— Load balances between servers based on the amount of bandwidth processed by each real server in a given duration of time. Sampling interval and duration for bandwidth measurements are user configurable. Using weighted bandwidth assigns greater weight to most recent samples, or to more potent servers to deliver the highest server performance and scalability.
tCookie Switching— This feature directs HTTP requests to a server group based on information embedded in a cookie in the HTTP header.The next time the client requests information from the server, the cookie specifies which server group should handle the request.Cookie switching ensures that a particular server group always handles requests from a particular client, even across sessions, thereby guaranteeing client persistence and a more satisfying end-user experience.
tURL Switching— ServerIron directs HTTP requests to a server or group of servers, using information contained inside the text of a URL string. URL switching grants the network administrator greater control over the web site deployment to place different web content on different servers, thereby eliminating the constraint of duplicating all content across all load-balanced real servers.
tURL Hashing— Using this feature enables ServerIron to examine information in the HTTP request (either the Cookie header or the URL string) and internally map this information to one of the real servers bound to the virtual server.This HTTP request and all future HTTP requests that contain this information then always go to the same real server.
tURL Parsing— Selects a real server or a group of servers by looking at the prefix or suffix of the URL or by applying a pattern-matching expression to the entire URL. ServerIron supports up to 256 URL rules and imposes no limit on the URL length examined. tSSL Session ID Switching— SSL (Secure Socket Layer) is a
protocol for secure World Wide Web connections used to protect confidential information with server authentication, data encryption and message integrity. In order for SSL to work, all the SSL connections between a client and server must reach the same host. ServerIron ensures that all the traffic for an SSL transaction with a given SSL ID always goes to the same server. It is a “must have” feature for commerce, financial, and shopping-cart based web sites. tHTTP Header Switching— Directs client requests to the
appropriate group of servers by reading deep into the contents of the HTTP header. For example, using the language code embedded in the header, the ServerIron sends the client request to the group of servers providing content for a specific language.The HTTP protocol header has fields that carry valuable information that can assist in further optimizing server utilization and increasing server scalability. tXML Switching— XML has emerged as a dominant standard for
exchanging information between applications in the Internet.The ServerIron provides intelligent Layer 7 switching based on XML tags and attributes embedded in XML documents encapsulated in SOAP and HTTP messages. Load balancing, persistence and content filtering are supported with XML switching rules.
tAdvanced Rules Engine—The ServerIron supports the industry’s most comprehensive rules engine that gives maximum flexibility to the customers in defining and applying Layer 4-7 switching rules to a rich set of application content. Switching rules are not limited to one type of content or protocol, and can be combined for maximum flexibility and scalability.
IronShield
™Security
tIntelligent TCP and UDP Connection Rate Limiting— ServerIron further protects server farms, firewalls and cache servers by controlling the rate of TCP and UDP connections on an application port basis. Controlling the rate of new connections that each device receives ensures availability despite increased levels of activity due to DDoS attacks or surges in user access.
tNetwork Address Translation (NAT)— Using ServerIron’s bi-directional NAT, network administrators can assign real servers internal non-routable private addresses to enhance security and conserve address space. ServerIron also supports NAT functionality for environments where the real servers reside in different subnets. This translates to complete network design flexibility when laying out server farms.
tEnhanced NAT— Unique to Foundry Networks, ServerIron’s generic NAT supports generic UDP,TCP, and ICMP applications
as well as active and passive FTP,Windows™Media, RealAudio,
Real Video, RealMedia, and QuickTime protocols
tTransaction Rate Limiting™— ServerIron protects real servers against malicious attacks from high-bandwidth users by allowing administrators to configure a threshold for the rate of incoming connections per user.
tSYN-Guard™— ServerIron protects server farms against multiple forms of Denial of Service (DoS) attacks, such as TCP SYN attacks, by monitoring and tracking session flows. Only valid connection requests are sent to the server.This capability combined with the ability to support over 15 million concurrent connections protects against the hijacking of server resources by malicious users and ensures connectivity for genuine clients. Using the SYN-Cookie feature, the ServerIron forwards only completed client connections to the servers.
tHigh Performance Access Control Lists (ACLs) and Extended
ACLs— By using ACLs, network administrators can restrict access
to specific applications from a given address or subnet. Filters can be easily set to deny access to servers by any particular port or VIP address. For example, a network administrator can deny FTP traffic to a particular address. Conversely, filters can be set to allow access by a subset of users or subnets.
tCisco-syntax ACLs— ServerIron supports Cisco-syntax ACLs, which network administrators can easily cut/copy/ paste from their existing Cisco products to drop them right into the ServerIron configuration for the ultimate in portability and security.
Session Persistence for
Web Application Transactions
tInternet IronWare maintains up to seven different methods of
persistence to ensure that shopping-cart type applications and long-running transactions proceed accurately.When combined with the ability to handle over 15 million concurrent sessions, ServerIron provides the industry’s best persistence methods to build high-performance networks for e-commerce.
tPort Tracking— Some web applications define a lead port and follower ports. ServerIron ensures that all connections to the follower ports arrive at the same server as the lead port connection. For example, if SSL traffic follows HTTP traffic, the network administrator often defines the SSL port as the follower port to the HTTP port.This ensures that both types of traffic arrive at the same server for a given customer.
tSticky Ports— ServerIron supports a wide variety of “sticky” connections, including those where applications require that the client request for additional TCP/UDP ports always go to the same real server, to the server using arbitrary port numbers, or to the server using sequential TCP/UDP ports.
tAdditional Persistence Methodologies— ServerIron supports many other types of persistence based on a large range of user programmable options, including Source IP/VIP/Port, Source IP/VIP, and SSL Session ID.
tMega Proxy Server Persistence— Network managers can configure ServerIron to treat a range of source IP addresses as a single source to solve the persistence problem caused by certain mega proxy sites in the Internet.
tComprehensive Session Persistence— ServerIron expands upon simple cookie-based switching by including support for Source IP based persistence.When configured for cookie-based persistence, ServerIron uses Source IP-based session persistence if there is no cookie present.This provides a superior level of session persistence over other vendor implementations.
High Availability Services
tRemote Backup Servers— If no local servers or applications are available, ServerIron sends client requests to remote servers.The remote server can be another server farm managed by another ServerIron or just another group of real servers. By defining multiple remote servers, ServerIron will load balance the traffic among them using the selected load balancing method.
tHTTP Redirect— ServerIron can also use HTTP redirect to send traffic to remote servers if the requested application is not available on the local server farm.
tActive/Standby— When deployed in active-standby mode, the standby ServerIron will assume control and preserve the state of existing sessions in the event the primary load-balancing device fails. Configuration common to the two ServerIron switches can be automatically synchronized to avoid manual replication. tActive/Active— When deployed in active-active mode, both
ServerIron switches work simultaneously and provide a backup for each other while supporting stateful fail-over. Configuration common to the two ServerIron switches can be automatically synchronized to avoid manual replication.
tQuality of Service— Network administrators can prioritize traffic based on ports, MAC,VLAN, and 802.1p attributes, as well as by service port and application type; for example, ServerIron can grant priority to HTTP traffic over FTP.
tRedundant Power Supplies— ServerIronXL supports an optional built-in redundant power supply and ServerIron 800/850 support multiple (up to three additional) hot-swappable power supply options. ServerIron 100, 400 and 450 support dual hot-swappable power supplies.
Ease Server Farm Management
tMix and Match Servers— ServerIron increases network design flexibility and investment protection for existing resources by allowing for application distribution on different servers based on performance requirements, with dynamic adjustment and without interruption of service.
tGraceful Shutdown— ServerIron allows you to gracefully remove a server from the load balancing rotation without disrupting any existing session.This increases site stability when upgrading or repairing servers.
tSNMP Reporting— ServerIron reports SNMP traps and events to the specified trap receiver and can send those management messages to up to six different Syslog servers.
Disaster Recovery and Global
Server Load Balancing
ServerIron redirects client traffic globally by site availability, site load, and site response time. ServerIron also measures client/ server proximity as defined by round trip delay and geographic location. All these features can work in conjunction with the network’s existing DNS servers and results in minimizing network disruption when implementing GSLB. ServerIron continually monitors the sites to detect any changes in servers or services due to varying health and traffic conditions. Configurable site load thresholds enable network administrators to fine tune the health checking parameters to best suit the site’s server and service capabilities. [See Figure 3]
FlashBack™, a unique Foundry Internet traffic management
feature, measures response time between the authoritative DNS site and each data center.ServerIron actually computes proximity based on the round trip time between the different global sites and uses these measurements as a benchmark to determine site responsiveness and the site’s range to the client.
In addition,ServerIron uses geographic site selection to keep the requests within continental domains. ServerIron constantly monitors application traffic to create a knowledge base that enables a more intelligent GSLB methodology, powering smarter site selection criteria. ServerIron handles server farm outages or overloads even after the DNS lookup by automatically triggering HTTP redirection or implementing remote server load balancing. ServerIron GSLB provides the following:
ServerIron A New York Denver San Jose ServerIron B www.foundrynet.com Local DNS Client DNS Request/ Response Proximity and Load Conditions 1. New York 2. San Jose 1. San Jose 2. New York Round Trip Time
Authoritative DNS www.foundrynet.com 7 6 5 4 3 2 1 tFigure 3 7
tActs as a DNS proxy to transparently intercept and modify the DNS responses, thereby directing customers to the best site.
tHandles server farm outage or overload after the DNS lookup by
HTTP redirect or remote server load balancing.
tLeverages the existing DNS server and minimizes disruption to
the existing DNS environment.
tProvides continuous site monitoring to detect changes in site health conditions.
tAllows the network administrator to tune individual site load thresholds through configurable settings.
tMonitors and selects sites based on FlashBack speed, which
measures performance using site, server and application responsiveness.
tAdds an evolutionary knowledge based in the global server load
balancer that enables smarter site selection as more clients access the site.
tGrants the network administrator the ability to tune ServerIron
settings and ensure that minimal differences in various site metrics do not affect site selection.
Foundry offers another unique Internet application management feature called “Global IP”. Working alongside Foundry Layer 3 switches (BigIron®and NetIron®) and powered
by unique VIP health checking algorithms, Global IP injects routes to client application services based on regional data center server-farm health and provides GSLB capability without relying on the DNS protocol.This enables ISPs and enterprises to instantaneously build networking infrastructures on a global basis and offer ready-to-go differentiated services to customers for multi-site deployments.
Transparent Cache Switching
ServerIron switches improve Internet response time and decrease WAN access costs by redirecting web traffic destined for remote Internet hosts to local cache servers. Foundry’s Transparent Cache Switching (TCS) can be used with any cache server that supports transparent redirection, including those from leading vendors such as Blue Coat, Cobalt, Compaq, Dell, Inktomi (a Yahoo company), Network Appliance, and Novell. Foundry’s TCS offers network managers a resilient web caching solution that significantly simplifies administration. Unlike proxy server solutions that require manual configuration of each client’s browser,ServerIron transparently intercepts and switches HTTP client requests to an available cache server without reconfiguring the client’s browser. Network administrators can configure the device to switch traffic based on source and destination IP address. [See Figure 4]
ServerIron switches provide the industry’s most powerful content-aware cache switching features to build intelligent content networks that route traffic based on content rather than just IP addresses.The ServerIron TCS application includes the following content-switching features:
tIntelligent load balancing of caches to eliminate content duplication, increase cache-hit ratio, and improve the Internet response time.
tAccelerate delivery of dynamic content and optimize the cache
utilization by bypassing the caches automatically for dynamic content.
tSpecify content-based rules to determine what content should
be cached.
tOrganize caches into logical groups that serve different content to provide differentiated service offerings to content providers.
Dynamic Content Static
Content
Cache
Web Server Farm Web Server Farm
tFigure 4
Technical and Physical Specifications
Load Balancing
Methods
Least connections Response time
Response time + least connections Round robin
Weighted distribution
Bandwidth and Weighted Bandwidth
Layer 2 Switching
Capabilities
32,000 MAC addresses 802.1d Spanning Tree Protocol 802.1p prioritization
Policy-based VLANs Port-based VLANs Layer 3 protocol VLANs
Layer 3 protocol and subnet VLANs 802.1q VLAN tagging
Protocol
Support
TCP UDP SSL FTP Telnet SMTP HTTP IMAP4 LDAP NNTP POP3 DNS BootP TFTP SNMP VRRP/VRRPe IPSec RADIUS VoIP Web-based GUI Telnet SNMP RMONIronView Network Manager (INM) HP OpenView
Warranty
1 year hardware 90 days software Upgrades to higher levels availableMounting Options
19"
Universal EIA (telco) Rack TabletopStandards
Compliance
802.3, 10BaseT 802.3u 100BaseTX, 100BaseFX 802.3z 1000BaseSX 802.3z 1000BaseLX 802.3x Flow Control 802.1q VLAN Tagging 802.1d Bridging802.3 Ethernet Like MIB Repeater MIB
Ethernet Interface MIB SNMP V1
SNMP MIB II
Network
Management
Integrated Command Line Interface
SSH
ServerIronXL ServerIron 100 ServerIron 400/450 ServerIron 800/850
Series
Concurrent sessions 1,000,000 5,000,000 15,000,000 15,000,000
Throughput 2 Gbps 10 Gbps 56 Gbps 56 Gbps
Switching capacity 4.4 Gbps 20 Gbps 128 Gbps 256 Gbps
Packet forwarding rate 3,000,000 pps 48,000,000 pps 48,000,000 pps 84,000,000 pps
Number of Virtual IP addresses Unlimited Unlimited Unlimited Unlimited
Number of real servers 1,024 2,048 2,048 2,048
Number of 10/100 ports 24 24 72 168
Number of Gigabit ports 2 10 48 112
Total number of ports 26 24 72 168
Layer 3 switching capabilities Supports servers OSPF, RIPv2, Supports OSPF, RIPv2, Supports OSPF, RIPv2, Supports
on different subnets servers on different servers on different servers on different
from that of Virtual subnets from that of subnets from that of subnets from that of
IP address Virtual IP address Virtual IP address Virtual IP address
Physical dimensions 2.75" h x 17.5" 8.75" h x 17.5" 8.75" h x 17.5" 20.75" h x 17.5"
w x 16.75" d w x15" d w x 15" d w x15.25" d
(6.7 cm x 44.5 (22.2 cm x 44.5 (22.2 cm x 44.5 (52.7 cm x 44.5
cm x 42.2 cm) cm x 38.1 cm) cm x 38.1 cm) cm x 38.7 cm)
Weight 18–22 lbs Not to exceed 60 lbs 60 lbs fully loaded 117 lbs fully loaded
(8–10 kg) (29.9 kg) (29.9 kg) (43.7 kg)
Power requirements 110v/220v Single (1) Power Supply: 4-slot Chassis with Single 8-slot Chassis with Single
auto-sensing Input Voltage and Current (1) Power Supply: (1) Power Supply:
Power Supply Rating— Input Voltage and Current Input Voltage and Current
70 to -40 VDC: 17A 100 Power Supply Rating -70 Power Supply Rating -70
to 120 VAC (auto-ranging): to -40 VDC: 17A 100 to -40 VDC: 17A 100
8A 200 to 240 VAC to 120 VAC ranging): to 120 VAC
(auto-(auto-ranging): 4A AC 8A 200 to 240 VAC ranging): 8A 200 to 240
line frequency: 47–63 Hz (auto-ranging): 4A AC VAC (auto-ranging): 4A
line frequency: 47–63 Hz AC line frequency:47–63 Hz
Ordering Information
Part Number Description
ServerIron 450 and 850 Base Platforms
SI450 4-slot chassis equipped with WSM6 (Web Switching Management Module) that automatically aligns itself with up to three additional JetCore based line modules installed in the chassis for high-performance Layer 4-7 switching applications
SI450-DC 4-slot –48V DC chassis equipped with WSM6 (Web Switching Management Module) that automatically aligns itself with up to three additional JetCore based line interface modules installed in the chassis for high-performance Layer 4-7 switching applications
SI850 8-slot chassis equipped with WSM6 (Web Switching Management Module) that automatically aligns itself with up to seven additional JetCore based line modules installed in the chassis for high-performance Layer 4-7 switching applications
SI850-DC 8-slot –48V DC chassis equipped with WSM6 (Web Switching Management Module) that automatically aligns itself with up to seven additional JetCore based line modules installed in the chassis for high-performance Layer 4-7 switching applications
S450 4-slot ServerIron 450 chassis with single AC power supply
S450-DC 4-slot ServerIron 450 chassis with single –48V DC power supply
S450-S 4-slot ServerIron 450 SPARE chassis, NO Power supply
S850 8-slot ServerIron 850 chassis with single AC power supply
S850-DC 8-slot ServerIron 850 chassis with single –48V DC power supply
S850-S 8-slot ServerIron 850 SPARE chassis, NO Power supply
ServerIron 450 and 850 Module Options
J-B48E 48-port 10/100Base-TX (RJ45) double-wide JetCore line Module
J-BxG 8-port 1000Base-X (mini-GBIC) JetCore line Module
J-B16GC 16-port 100/1000Base-T (RJ45) JetCore line Module
J-B16Gx 16-port 1000Base-X (mini-GBIC) JetCore line Module
ServerIron 450 and 850 System Options
WSM6 Web Switch Management Module (WSMM) II. Use this to order replacement or for inventory of a backup WSMM.
TRFWRKS-PREM Premium Layer 2 Switching, Layer 3 Routing, & Layer 4-7 Traffic management software
ServerIron 450 and 850 Gigabit Optic Upgrades
LHA 1-port 1000Base-LongHaul (SC) series A Gigabit uplink for 70km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities
LHB 1-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities.
ServerIron 450 and 850 Mini GBIC Options E1MG-SX 1000Base-SX mini-GBIC optic, MMF, LC connector
E1MTG-SX 1000Base-SX mini-GBIC optic, MMF, MTRJ connector
E1MG-LX 1000Base-LX mini-GBIC optic, SMF, LC connector
E1MG-LHA 1000Base-LHA mini-GBIC optic, SMF, LC connector
E1MG-LHB 1000Base-LHB mini-GBIC optic, SMF, LC connector, 150km Maximum reach
E1MG-TX 1000BASE-TX Mini-GBIC Copper, RJ-45 Connector
ServerIron 400 and 800 Base Platforms
SI400 4-slot chassis equipped with WSMM—high-performance application switching module
SI400-DC 4-slot chassis equipped with WSMM—high-performance application switching module and –48V DC power
SI800 8-slot chassis equipped with WSMM—high-performance application switching module
SI800-DC 8-slot chassis equipped with WSMM—high-performance application switching module and –48V DC power
S400 4-slot ServerIron chassis with single AC power supply
S400-DC 4-slot ServerIron chassis with single–48V DC power supply
S400-S 4-slot ServerIron SPARE chassis with NO power supply
S800 8-slot ServerIron chassis with single AC power supply
S800-DC 8-slot ServerIron chassis with single –48V DC power supply
S800-S 8-slot ServerIron SPARE chassis with NO power supply
ServerIron 400 and 800 Module Options
BxG-A 8-port 1000Base-X (mini-GBIC) ServerIron IronCore module
B2G-A 2-port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module
B4G-A 4-port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module
B8G-A 8-port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module
B8GC 8-port 1000Base-T (RJ45) ServerIron IronCore module
B24E-A 24-port 10/100Base-TX (RJ45) ServerIron IronCore module
B24FX 24-port 100Base-FX (MTRJ) for 50 or 62.5µm MMF ServerIron IronCore module
ServerIron 400 and 800 System Options
WSM4 ServerIron 400/800 Web Switch Management Module. Use this to order replacement or for inventory of a backup Web Switch Management module.
TRFWRKS-PREM Premium Layer 2 Switching, Layer 3 Routing, & Layer 4-7 Traffic management software
ServerIron 400 and 800 Gigabit Optic Upgrades
LHA 1-port 1000Base-LongHaul (SC) series A Gigabit uplink for 70km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities
LHB 1-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities.
ServerIron 400 and 800 Mini GBIC Options E1MG-SX 1000Base-SX mini-GBIC optic, MMF, LC connector
E1MTG-SX 1000Base-SX mini-GBIC optic, MMF, MTRJ connector
E1MG-LX 1000Base-LX mini-GBIC optic, SMF, LC connector
E1MG-LHA 1000Base-LHA mini-GBIC optic, SMF, LC connector
E1MG-LHB 1000Base-LHB mini-GBIC optic, SMF, LC connector, 150km Maximum reach
E1MG-TX 1000BASE-TX Mini-GBIC Copper, RJ-45 Connector
ServerIron 100 Base Platforms
SI-100-2402 24-port 10/100Base-TX (RJ45) ServerIron IronCore module and 2 port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module (DC Power)
SI-100-2402-DC 24-port 10/100Base-TX (RJ45) ServerIron IronCore module and 2 port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module (DC Power)
SI-100-8GC02F 8-port 1000Base-T (RJ45) ServerIron IronCore module and 2-port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module
SI-100-8GC02F-DC 8-port 1000Base-T (RJ45) ServerIron IronCore module and 2-port 1000Base-SX (SC) for 50 or 62.5µm MMF ServerIron IronCore module (DC Power)
SI-100-8G 8-port 1000Base-X (mini-GBIC) ServerIron IronCore module. GBICs required
SI-100-8G-DC 8-port 1000Base-X (mini-GBIC) ServerIron IronCore module. GBICs required (DC Power)
ServerIron 100 System Options
WSM4-100 ServerIron 100 Web Switch Management Module. Use this to order replacement for the management module in SI-100 configurations.
SI-100-TW-PREM Enhanced version of Trafficworks IronWare for the SI 100 series that includes Global Server Load Balancing (GSLB)
ServerIron 100 Gigabit Optic Upgrades
LHA 1-port 1000Base-LongHaul (SC) series A Gigabit uplink for 70km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities
LHB 1-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150km maximum reach with 9 or 10µm SMF and minimum 10dB attenuation—specify SX to LHx upgrade quantities.
ServerIron 100 Mini GBIC Options
E1MG-SX 1000Base-SX mini-GBIC optic, MMF, LC connector
E1MTG-SX 1000Base-SX mini-GBIC optic, MMF, MTRJ connector
E1MG-LX 1000Base-LX mini-GBIC optic, SMF, LC connector
E1MG-LHA 1000Base-LHA mini-GBIC optic, SMF, LC connector
E1MG-LHB 1000Base-LHB mini-GBIC optic, SMF, LC connector, 150km Maximum reach
E1MG-TX 1000BASE-TX Mini-GBIC Copper, RJ-45 Connector
ServerIronXL Base Platforms
FCSLB16 16-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot
FCSLB24 24-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot
FCSLB16-I (International Orders Only) 16-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot
FCSLB24-I (International Orders Only) 24-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot
FCSLB16DC 16-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot and –48VDC power supply
FCSLB24AC 24-port 10/100Base-TX (RJ45) ServerIron XL with one expansion slot and –48VDC power supply
ServerIronXL System Options
U1GC 1-port 1000Base-T (RJ45) copper Gigabit uplink
U2GC 2-port 1000Base-T (RJ45) copper Gigabit uplink
RPS Redundant auto-switching 90-240v AC power supply for ServerIron XL 16/24 port only
RPS-I (International Orders Only) Redundant auto-switching 90-240v AC power supply for ServerIron XL 16/24 port only
RPSDC-FC -48VDC power supply for ServerIron XL 16/24 only and is a factory configuration only
F2100F 2-port 100Base-FX MMF (SC) uplink
F1GE 1-port 1000Base-SX (SC) Gigabit uplink for 50 or 62.5 um MMF
F2GE 2-port 1000Base-SX (SC) Gigabit uplink for 50 or 62.5 um MMF
FLX1GE 1-port 1000Base-LX (SC) Gigabit uplink for 9 or 10 um SMF
FLX2GE 2-port 1000Base-LX (SC) Gigabit uplink for 9 or 10 um SMF
FLXSXGE 2-port Gigabit uplink with 1-port 1000Base-SX (SC) and 1-port 1000Base-LX (SC) for 50 or 62.5 um MMF and 9 or 10 um SMF
FLHA1G 1-port 1000Base-LogHaul (SC) series A Gigabit uplink for 70 km maximum reach with 9 or 10 um SMF and minimum 10 db attenuation
FLHA2G 2-port 1000Base-LogHaul (SC) series A Gigabit uplink for 70 km maximum reach with 9 or 10 um SMF and minimum 10dB attenuation
FLHB1G 1-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150 km maximum reach with 9 or 10 um SMF and minimum 10dB attenuation
FLHB2G 2-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150 km maximum reach with 9 or 10 um SMF and minimum 10 dB attenuation
ServerIronXL GBIC Options
LHA 1-port 1000Base-LongHaul (SC) series A Gigabit uplink for 70 km maximum reach with 9 or 10 um SMF and minimum 10dB attenuation— specify SX or LHx upgrade quantities
LHB 1-port 1000Base-LongHaul (SC) series B Gigabit uplink for 150 km maximum reach with 9 or 10 um SMF and minimum 10dB attenuation— specify SX or LHx upgrade quantities
Specifications subject to change without notice.
DS-004/Rev.5/06-04 © 2004 Foundry Networks, Inc.All Rights Reserved. Foundry Networks, BigIron, FastIron, NetIron, ServerIron, IronPoint, Terathon, JetCore, EdgeIron, IronView, JetScope, IronShield, MetroLink, IronWare,TrafficWorks, Power of Performance and the ‘Iron’ family of marks are trademarks or registered trademarks of Foundry Networks, Inc. in the United States and other countries.All others are trademarks of their respective owners.
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