Market | ExtremeNetworks-Summit X450-24t
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Summit X450a Series

Voice-Class Availability
  • Modular ExtremeXOS Operating System (OS)
  • Ethernet Automatic Protection Switching (EAPS) resiliency protocol
  • SummitStack and SummitStack-V highly available stacking support

Advanced Features Offer Versatile Deployment
  • High bandwidth, non-blocking architecture for demanding edge applications
  • High density gigabit ports with optional 10 gigabit uplinks that provide high-performance aggregation
  • Advanced routing protocols such OSPF, BGP and multicast for an efficient and productive small network core
  • Exceptional Quality of Service (QoS) with advanced traffic management capabilities for triple play services in Carrier Ethernet networks

Comprehensive Security
  • User authentication, host integrity enforcement and Identity Management
  • Universal Port dynamic security profile to provide fine granular security policies in the network
  • Threat detection and response instrumentation to react to network intrusion with CLEAR-Flow Security Rules Engine
  • Harden the network infrastructure with Denial of Service (DoS) protection and IP security against man-in-the-middle and DoS attacks

The Summit X450a series is based on Extreme Networks revolutionary ExtremeXOS operating system. ExtremeXOS modular OS is highly resilient and provides continuous uptime, manageability and operational efficiency. Each Summit X450a switch offers the same high-performance, non-blocking hardware technology used on Extreme Networks BlackDiamond 8800 series, in the Extreme Networks tradition of simplifying network deployments through the use of common hardware and software throughout the network.

The flexible and scalable Summit X450a switch is an ideal aggregation switch for traditional small core enterprise networks. The Summit X450a series is a perfect first level aggregation device for DSLAMs at a local central office before traffic is passed on to the Extreme Networks BlackDiamond 20808 or BlackDiamond 20804 core switch at the Point of Presence (POP) where traffic is managed and connected to service networks.

The versatile Summit X450a switch provides high-density gigabit plus optional 10 Gigabit Ethernet ports in a compact 1RU format, supporting a full range of Layer 2 to Layer 4 functionalities on every port to allow high productivity. Optional redundant power supplies are offered with each switch to protect against power anomalies, providing a continuous operational network.

Target Applications
  • Aggregation switch in a traditional three tiered network that requires high availability and ExtremeXOS advanced features
  • DSLAM aggregation, active Ethernet access or access aggregation device in a Carrier Ethernet network
  • Access or access aggregation switch in a business E-Line or E-LAN over VPLS network
  • Top-of-Rack switch in a data center deploment
  • Interconnect switch providing low latency connections for High Performance Cluster Computing (HPCC)
  • Core switch for a small network

Voice-Class Availability

Powered by the ExtremeXOS, Summit X450a supports process recovery and application upgrades without the need for a system reboot. Summit X450a provides the high network availability required for converged applications.

Modular Operating System for Non-Stop Operation
  • Preemptive Multitasking and Protected Memory
    The Summit X450a series switch allows each of many applicationssuch as Open Shortest Path First (OSPF) and Spanning Tree Protocol (STP)to run as separate OS processes that are protected from each other. This drives increased system integrity and inherently protects against DoS attacks.

  • Process Monitoring and Restart
    ExtremeXOS dramatically increases network availability using process monitoring and restart. Each independent OS process is monitored in real time. If a process becomes unresponsive or stops running, it can be automatically restarted.

  • Loadable Software Modules
    The modular design of ExtremeXOS allows the upgrading of individual software modules, should this be necessary, leading to higher availability in the network (see Figure 1).
Figure 1: ExtremeXOS Modular Design

High Availability Network Protocols
  • Ethernet Automatic Protection Switching (EAPS)
    EAPS allows the IP network to provide the level of resiliency and uptime that users expect from their traditional voice network. EAPS is more adaptable than Spanning Tree or Rapid Spanning Tree protocols and offers sub-second (less than 50 milliseconds) recovery that delivers consistent failover regardless of the number of VLANs, network nodes or network topology. Since EAPS allows the network to recover almost transparently, Voice-over-IP calls will not drop and digital video feeds will not freeze or pixelize in most situations.

  • Spanning Tree/Rapid Spanning Tree Protocols
    The Summit X450a series supports Spanning Tree (802.1D), Per VLAN Spanning Tree (PVST+), Rapid Spanning Tree (802.1w) and Multiple Instances of Spanning Tree (802.1s) protocols for Layer 2 resiliency.

  • Software-Enhanced Availability
    Software-enhanced availability allows users to remain connected to the network even if part of the network infrastructure is down. The Summit X450a series continuously checks for problems in the uplink connections using advanced Layer 3 protocols such as OSPF, VRRP and Extreme Standby Router Protocol (ESRP, supported in Layer 2 or Layer 3), and dynamically routes traffic around the problem.

  • Equal Cost Multipath
    Equal Cost Multipath (ECMP) routing allows uplinks to be load balanced for performance and cost savings while also supporting redundant failover. If an uplink fails, traffic is automatically routed to the remaining uplinks and connectivity is maintained.

  • Link Aggregation (802.3ad)
    Link aggregation allows trunking of up to eight links on a single logical connection, for up to 20 Gigabits per Second (Gbps) of redundant bandwidth per logical connection.

  • Multi-Switch LAG (M-LAG)
    M-LAG can address bandwidth limitations and improve network resiliency, in part by routing network traffic around bottlenecks, reducing the risks of a single point of failure, and allowing load balancing across multiple switches.

Voice-Grade Stacking with SummitStack
The Summit X450a series offers dual stacking interfaces to provide high-speed 40 Gbps stacking bandwidth. SummitStack stacking architecture is designed to support converged services such as VoIP and video by its highly available, rapid failover capability with n-1 master redundancy, distributed Layer 2 and Layer 3 switching, link aggregation across the stack and distributed uplinks. The 40 Gbps SummitStack supports up to eight units in a stack, including any mix of Summit X460, X480, X650, X450a, X450e, and X250e running the same version of ExtremeXOS. It provides sub-second failover for path failure and hitless master/ backup failover along with hitless protocol support such as OSPF graceful restart and Network Login user authentication.

The Summit X450a switch provides chassislike management and availability with its SummitStack stacking technology (see Figure 2).
Figure 2: SummitStack Stacking Architecture

SummitStack-VFlexible Stacking Over 10 Gigabit Ethernet
SummitStack-V capability utilizes 10 GbE ports as stacking ports, enabling the use of standard cabling and optics technologies used for 10 GbE such as XFP, SFP+, 10GBASE-T and XENPAK. SummitStack-V provides long-distance stacking connectivity of up to 40 km while reducing the cable complexity of implementing a stacking solution. SummitStack-V enabled 10 GbE ports must be physically direct-connected. SummitStack-V is compatible with Summit X450e, X450a, X460, X480 and X650 switches running the same version of ExtremeXOS (version 12.5 or greater).

Advanced Features Offer Versatile Deployment

Combining superior resiliency, comprehensive security, and nonblocking performance, the Summit X450a switch is the cornerstone of a high-performance network. Summit X450a series provides a high bandwidth, non-blocking architecture with tri-speed copper Gigabit Ethernet ports for demanding Top-of-Rack data center applications. With optional 10 gigabit trunks, Summit X450a switches connect to gigabit edge devices and provide a high-performance aggregation layer in a traditional three-tier LAN. For Carrier Ethernet networks, Summit X450a switches deliver exceptional QoS and traffic management capabilities.

High Bandwidth, Non-Blocking Architecture for Demanding Edge Applications
When deployed as an access switch, Summit X450a, with its modular 10 gigabit integrated fiber ports, provides the bandwidth required by the most demanding applications. With more than 20 gigabits of uplink capacity, uplink bandwidth bottlenecks are eliminated. Providing line-rate throughput and supporting jumbo frames up to 9,216 bytes, Summit X450a allows transfers to be completed in minimal time.

High Density Gigabit Ports with Optional 10 Gigabit Uplinks
The Summit X450a switches provide ideal performance and functionalities for the aggregation layer. They eliminate the need to funnel traffic through a low bandwidth gigabit trunk by providing non-blocking 10 gigabit links to the core. As an option module, Summit X450a provides a variety of choices for 10 Gigabit Ethernet uplinks: dual port 10GBASE-T for UTP connectivity, dual port SFP+ for fiber and passive copper connectivity, dual port XFP and dual port XENPAK.

Link Redundancy Protocols
Aggregation switches are located in the network crossroads with high-density traffic from many users. Because of its location, every connection to and from an aggregation switch must be redundant in order to allow a safe failover of traffic to a secondary path in case of link or device failure. The Summit X450a series offers superior link redundancy features that provide a highly available aggregation layer. For example, where voice-grade resiliency is required, EAPS allows links to failover rapidly so that voice call sessions are not dropped. Other link resiliency features include OSPF, ECMP and VRRP, providing standards-based Layer 3 dual homing, Extreme Standby Router Protocol (ESRP) that offers dual homing at both Layer 2 and Layer 3, and a unique software redundant port that does not require any loop detection protocol and is easy to configure.

Advanced Routing Capabilities for Small Network Core
Supporting core deployments requires full protocol support. Summit X450a switches support advanced protocols for an efficient and productive small network core. The switches provide static, RIP and Edge-OSPF protocols with policy-based routing capabilities. An optional ExtremeXOS core license extends the feature set to include other important core functions such as:
  • Full OSPF for much greater extensibility than RIP can provide
  • BGP for inter-autonomous system forwarding
  • PIM, sparse and dense modes for routing of multicast streams
  • IPv6 hardware forwarding with OSPFv3
  • IPv6 tunnels, IPv6-to-IPv4 translation, and IPv6 multicast discovery for extensive IPv6 support

Supports Virtualized Data Centers
Summit X450a switches also support Direct Attach, which eliminates the virtual switch layer, simplifying the network and improving performance. Direct Attach enables data center simplification by reducing network tiers from 4 or 5 tiers to just 3 or 2 tiers, depending on the size of the data center. To further enhance data center operations, Summit X450a switches support XNV (ExtremeXOS Network Virtualization), a set of licensable software modules for both the ExtremeXOS based switching product portfolio, as well as for EPICenter, a network provisioning and management application. XNV brings insight, control and automation for highly virtualized data centers to the network.

Exceptional Policy-Based QoS and Traffic Management for Triple Play Services
The Summit X450a series provides eight hardware queues per port to support granular traffic classification, and up to 2,048 centralized ACLs per 24-port block that can use information from Layers 1 4 to prioritize and meter incoming packets at line-rate. When metering traffic, the switches can drop out-of-spec traffic or flag it for later action. To expedite upstream traffic handling, a packets classification can be carried forward with Layer 2 (802.1p) and Layer 3 (DiffServ) markings. Summit X450a provides advanced traffic management features that support the high quality triple play of voice, video and data services. Summit X450a switches support Extreme Networks vMAN tag stacking mechanism, which is compliant with the IEEE 802.1ad Provider Bridges standard. vMAN allows service providers to aggregate subscribers by using stacked Q-tags. Summit X450a switches provide low latency and hardware-based support for multicast traffic, making them excellent solutions for IPTV deployment over Carrier Ethernet infrastructures. The DC-powered version of Summit X450a switches provides an internal DC PSU and an optional redundant PSU and can be deployed in a POP where AC is not available.

Comprehensive Security Management

Implementing a secure network means providing protection at the network perimeter as well as the core. Working together with Extreme Networks Sentriant family of products, Summit X450a switches use advanced security functions in protecting your network from known or potential threats.

User Authentication and Host Integrity Checking
  • Network Login and Dynamic Security Profile
    Summit X450a series switches support a comprehensive range of Network Login options by providing an 802.1x agentbased approach, a Web-based (agent-less) login capability, and a MAC-based authentication model. With these modes of Network Login, only authorized users and devices can connect to the network and be assigned to the appropriate VLAN. The Universal Port feature available in Summit X450a lets you implement Dynamic Security Profiles with Network Login and allows you to implement fine-grained and robust security policies. Upon authentication, the switch can load dynamic ACL/QoS profiles for a user or group of users to deny/allow access to the application servers or segments within the network.

  • Multiple Supplicant Support
    Converged network designs often involve the use of shared ports that represent a potential vulnerability in a network. Multiple supplicant capabilities on a switch allow it to uniquely recognize and apply the appropriate policies for each user or device on a shared port.

  • Media Access Control (MAC) Lockdown
    MAC security allows the lockdown of a port to a given MAC address and limiting the number of MAC addresses on a port. This can be used to dedicate ports to specific hosts or devices such as VoIP phones or printers, and avoid abuse of the porta capability that can be especially useful in environments such as hotels. In addition, an aging timer can be configured for the MAC lockdown, protecting the network from the effects of attacks using (often rapidly) changing MAC addresses.

  • IP Security
    ExtremeXOS IP security framework protects the network infrastructure, network services such as DHCP and DNS, and host computers from spoofing and man-in-the-middle attacks. It also protects the network from statically configured and/or spoofed IP addresses. It builds an external trusted database of MAC/IP/port bindings so you know where traffic from a specific address comes from for immediate defense.

  • Identity Manager
    Identity Manager allows network managers to track users who access their network. User identity is captured based on NetLogin authentication, LLDP discovery and Kerberos snooping. ExtremeXOS uses the information to then report on the MAC, VLAN, computer hostname, and port location of the user. Further, Identity Manager can create both roles and policies, and then bind them together to create role-based profiles based on organizational structure or other logical groupings, and apply them across multiple users to allow appropriate access to network resources. In addition, support for Wide Key ACLs further improves security by going beyond the typical source/destination and MAC address as identification criteria access mechanism to provide filtering capabilities.

  • Host Integrity
    Host integrity checking keeps infected or non-compliant machines off the network. Summit X450a series support a host and endpoint integrity solution that is based on a model promoted by the Trusted Computing Group by interfacing with Extreme Networks endpoint security product, Sentriant AG200.

Threat Detection and Response
  • CLEAR-Flow Security Rules Engine
    CLEAR-Flow Security Rules Engine provides first order threat detection and mitigation, and mirrors traffic to appliances for further analysis of suspicious traffic in the network.

  • sFlow
    sFlow is a sampling technology that provides the ability to sample application level traffic flows on all interfaces simultaneously.

  • Port Mirroring
    To allow threat detection and prevention, Summit X450a switches support many-to-one and one-to-many port mirroring. This allows the mirroring of traffic to an external network appliance such as an intrusion detection device for trend analysis or for utilization by a network administrator for diagnostic purposes. Port mirroring can also be enabled across switches in a stack.

  • Line-Rate ACLs
    ACLs are one of the most powerful components used in controlling network resource utilization as well as protecting the network. The Summit X450a series supports up to 2,048 centralized ACLs per 24-port block based on Layer 2, 3 or 4 header information such as the MAC or IP source/destination address. ACLs are used for filtering the traffic, as well as classifying the traffic flow to control bandwidth, priority, mirroring, and policy-based routing/ switching.

  • Denial of Service Protection
    Summit X450a effectively handles DoS attacks. If the switch detects an unusually large number of packets in the CPU input queue, it will assemble ACLs that automatically stop these packets from reaching the CPU. After a period of time, these ACLs are removed and reinstalled if the attack continues. ASIC-based LPM routing eliminates the need for control plane software to learn new flows, allowing more network resilience against DoS attacks.

  • Secure and Comprehensive Network Management
    As the network becomes a foundation of the enterprise application, network management becomes an important piece of solution. Summit X450a supports comprehensive network management through Command Line Interface (CLI), SNMP v1, v2c, v3, and the embedded XML-based web user interface, ExtremeXOS ScreenPlay. With a variety of management options and consistency across other Extreme Networks modular and stackable switches, Summit X450a series switches provide ease-of-management for demanding converged applications. Extreme Networks has developed tools that help save you time and resources in managing your network. EPICenter management suite provides fault, configuration, accounting, performance and security functions,allowing more effective management of Extreme Networks multi-layer switching equipment in a converged network. For carrier networks, Extreme Networks Ridgeline Service Advisor enables the shift from reactive circuit monitoring to proactive service monitoring. Ridgeline Service Advisor unifies service fulfillment, service assurance, and service engineering so carriers can effectively manage next-generation residential triple play, business Ethernet and mobile Ethernet backhaul services.

Target Applications

Small Network Core Switch
Summit X450a is ideal as a small network switch. The optional 10 gigabit ports are perfect for setting up a high bandwidth 10 gigabit backbone, or for aggregating multiple gigabit ports for inter-switch connectivity. All necessary core protocols are available, including BGPv4 and IPv6. With non-blocking performance, extensive DoS protection, Longest Prefix Match routing and superior traffic management features, Summit X450a has been designed from the ground up to be an ideal small core switch.

Traditional Aggregation Layer
Summit X450a is easily deployed as a technology upgrade to a traditional aggregation layer, bringing 10 gigabit uplinks and high availability. For copper and fiber deployments, a pair of Summit X450a switches provides redundant aggregation switching

Carrier Ethernet Services
Summit X450a is an ideal service delivery platform for Carrier Ethernet networks. The advanced traffic management, resiliency and scalability features give it the flexibility to be deployed as an access switch or as an aggregation switch. By supporting both access and aggregation service delivery requirements, Summit X450a minimizes service providers operational expenses.

High-Performance Cluster Computing (HPCC)
HPCC consists of many servers working cooperatively to solve large computational problems. With the use of relatively inexpensive and compact 1RU servers, a significant amount of processing power can be cost-effectively packed into a relatively small footprint. Summit X450a series switches address the need for high-performance and cost-effective connectivity required for HPCC using gigabit and 10 Gigabit Ethernet as the interconnect technology.
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