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The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Foundry POS solutions enable Metro Service Providers to offer high speed Ethernet services over an existing SONET network. Foundry’s NetIron Internet backbone routers and BigIron core Layer 2/Layer 3 switches provide high-density POS interfaces that support up to 56 OC-3c, 28 OC-12c, and 28 OC-48c non-blocking POS ports in a single system. This ensures a higher return on investment when fully utilizing Foundry’s products, which is the industry’s leader in switching capacity (up to 480 Gbps), in a high-density POS configuration.

Foundry supports Layer 2 POS, a key feature in Foundry’s BigIron family, that allows Metro Service Providers to extend customer Ethernet-based networks across SONET-based MAN infrastructures. By extending simple Layer 2 Ethernet switched networks across global SONET infrastructures, Global Ethernet allows Metro Service Providers to avoid extensive IP address administration. Using a SONET ring’s inherent self-healing feature, Metro Service Providers can deliver high availability MAN services with VLAN-based security to its customers. In addition, Metro Service Providers can use Foundry’s Fast STP convergence feature to ensure fast healing of link outages and overall network stability.

Foundry’s Layer 2 POS capabilities enable Metro Service Providers to offer high-speed connectivity for their enterprise customers with multiple campuses distributed over metropolitan area or extended co-location facilities for hosting web facilities.

Foundry’s POS solution supports extensive IP routing functionalities, enabling Metro Service Providers to deliver a robust Layer 3 MAN infrastructure for ISPs and enterprises. Foundry’s IP routing implementation scales to over two million BGP4 routes and hundreds of peers, allowing Metro Service Providers to create a highly scalable MAN infrastructure which can support a very large number of ISP and enterprise customers.

Foundry offers Policy Based Routing (PBR) allowing Metro Service Providers to offer IP routing of customer traffic based on well-defined routing policies, which enables potential value-added services. For example, Metro Service Providers can use source IP information to enable routing of subscribers’ traffic to its respective ISP.

Foundry NetIron’s ATM solution allows Metro Service Providers to deliver high-speed Ethernet services with an ATM network infrastructure. Metro Service Providers can flexibly provision customer MAN services by mapping customer VLANs (802.1q) to ATM Permanent Virtual Connections (PVCs), allowing Metro Service Providers to deliver ATM’s bandwidth management services. Foundry’s ATM offering supports 4096 connections, which can be mapped to Foundry’s 4096 VLANs, enabling traffic engineering to be done on a per customer basis.

In addition to POS and ATM, Metro Service Providers can provision high-speed MAN services using Foundry’s industry leading long haul optical Gigabit Ethernet solution. Foundry’s long haul optical Gigabit Ethernet solution extends Gigabit Ethernet up to 150 Km, enabling proximity to fiber regeneration stations (less than 200 Km) for installations within a Central Office (CO). This delivers cost savings, by allowing Metro Service Providers to invest in delivering high-revenue services such as Co-Location and Co-Hosting services.

Foundry’s long haul optical Gigabit Ethernet MAN solution delivers the following benefits:

• Cost effective solution building a MAN network without relying on existing SONET infrastructure.
• Co-location of Foundry’s product within a Central Office eliminates cost for additional real estate required for housing data networking equipment.
• Allows for intra-city connectivity without usage of any expensive optical signal regeneration equipment.
• A simple and low cost solution to bring remote locations into a MAN SONET ring infrastructure.

Foundry Networks offers a broad range of low-cost 10/100 and Gigabit Ethernet switching solutions to provide customer Ethernet Access services. The FastIron II family of LAN switches deliver low-cost, high-density 10/100 connectivity and Long-Haul Gigabit Ethernet connectivity from the customer site to the Metro Service Provider POP. FastIron switches support full Layer 2 features, including extensive quality-of-service (QoS) support, 4096 802.1q VLANs for customer security, intelligent multicast capability and wirespeed, non-blocking performance of up to 336 10/00 ports per chassis. FastIron II switches can also be upgraded to support full Layer 3 routing, including IP, IPX and AppleTalk protocol support and OSPF. Foundry also offers a complete range of Layer 2/Layer 3 stackable switching products, including the FastIron Workgroup and NetIron stackable switches. These switches deliver the same robust Layer 2/Layer 3 functionality as the FastIron II family in a compact, affordable stackable form factor.

Foundry’s MAN solution delivers comprehensive support for Gigabit Ethernet, Packet-over-SONET and ATM connectivity, delivering flexibility for Metro Service Providers to provide connectivity to legacy network infrastructures. Foundry’s complete MAN platform offering satisfies the needs of any Metro Service Provider, including those that offer voice-based services over SONET. Metro Service Providers can take advantage of Foundry’s various MAN technologies for use on their existing network infrastructure, enabling future MAN technology migration to 10 Gigabit Ethernet.

Foundry’s complete BGP4 implementation has been deployed extensively by major ISPs for over two years and it supports all the key standard-based BGP4 features:

• Standard RFCs for BGP4 such as RFC-1771, RFC-1745, and RFC-1997
• Route redistribution between BGP4 and RIP and OSPF, including static routes
• Route Reflection
• AS Confederation
• Route Flap Dampening
• MD5 Authentication, BGP4 Load Sharing, Regular Expressions, and Soft Configuration
• Advance BGP4 filtering using wire-speed Access Control List (ACL)
• Scales up to over two million BGP4 routes and over 200 neighbors, which allows for Internet peering with a large number of ISP and enterprise customers.

In addition, extensive support for standard-based multicast routing and management protocols allows for support of streaming media and multimedia multicast-based applications that presents Metro Service Providers with extensive application delivery opportunities.

Foundry's unique switching architecture enables Fixed Rate Limiting that caps input or output bandwidth within a set of user defined parameters as small as 256 Kbps, augmented at 8 Kbps increments, all the way up to 1 Gbps. Adaptive Rate Limiting allows multiple bandwidth provisioning policies to be applied in order giving significant flexibility to service providers to provision their services. Packets exceeding defined rate limits can be dropped, transmitted as is, or transmitted with a different set of QoS characteristics. Adaptive rate limiting policies include a defined set of bandwidth provisioning parameters including source or destination IP address range, source or destination TCP or UDP ports, IP precedence bits, DiffServ control points, MAC address, and standard and extended ACLs. This feature allows for a very granular service offering, which can be allocated in small bandwidth increments. It enables a tiered usage based offering and allows Metro Service Providers to maximize revenue opportunities.

Foundry’s products support IP Accounting and Byte Accounting. These capabilities allow Metro Service Providers to bill its customers based on their actual traffic usage or network usage. Metro Service Providers can acquire IP Accounting information based on input and output interface information, source and destination traffic byte count, byte count by source and destination TCP and UDP port, source and destination AS path information, and TOS bits or IP Precedence information.

Foundry’s IP accounting feature delivers the following benefits:

• Delivers true usage-based billing services.
• Enforce Service Level Agreements (SLAs) by providing detailed IP traffic accounting.
• Enables Metro Service Providers to use any standard off-the-shelf billing packages, which supports industry NMS standard protocol (SNMP).
• Allows for seamless co-existence with Internet-flow based billing applications used by Metro Service Providers.

Foundry MAN offerings include quality of service mechanism, which allows Metro Service Providers to distinguish application, such as Voice Over IP. Voice Over IP, which is UDP-based protocol, can be differentiated based on its UDP port number. This ensures packet prioritization of voice packets during high volume network traffic and eliminates voice packet latency and jitters, allowing for additional service offering in a MAN infrastructure without over-engineering.

IP traffic classification and prioritization can be based on ingress Port, IP source and destination address and subnet, TCP and UDP service, MAC Address, VLAN, and 802.1p or TOS (Type of Service). Foundry’s IP-based CBR enables Metro Service Providers to deliver both voice and data services in an integrated platform.

Foundry Networks’ MAN products offer hardware-based wire-speed access control lists (ACLs), which enable network administrators to control IP traffic by applying sophisticated permit or deny filters based on source and destination IP address, IP protocol information, or TCP or UDP protocol information. Foundry’s ACL implementation maintains wire-speed routing performance, while extensive access control rules are applied.

Foundry’s wire-speed ACLs allow for the following configuration:

• Standard – Permits or denies packets based on an IP address, an IP subnet, or a range
• Extended – In addition to the standard ACL configuration, permits or denies packets based on the following:
• Source/Destination host names
• Source/Destination TCP or UDP port/sockets
• Well-known TCP/UDP port numbers (0-1024)

Foundry Networks’ products include Secure Shell (SSH) and Secure Copy (SCP) capabilities, which employs user authentication and packet encryption, to allow secured management access either from a secured network or over the Internet. Foundry’s SSH and SCP includes varying encryption methods such as Arcfour, IDEA, Blowfish, DES (56-bit), Triple DES (168-bit). In addition, Foundry’s SSH allows for nine levels of data compression.

Foundry products support additional security features including TACACS/TACACS+, RADIUS, Authentication Authorization and Accounting (AAA), and Username/Password Account, which secure and account for management move/add change activities. Network managers can ensure integrity of their configuration and account for any extensive configuration changes. Protection against Denial of Service (DoS) attacks, both towards and through a Foundry product are available. This ensures protection against TCP SYN and Smurf attacks, eliminating unnecessary network downtime caused by malicious hackers.

Foundry’s MAN offerings deliver a complete solution for building a robust MAN infrastructure. With its support of Packet Over SONET/SDH from OC-3c to OC-192c, ATM, and the industry’s longest long-haul optical Gigabit Ethernet that can reach up to 150 Km, Metro Service Providers have the flexibility to deploy any combination of these technology in their MAN infrastructure. Foundry’s feature-rich software enables Metro Service Providers to increase its service offering, which translates into an increase in potential service revenue.