Cabletron Systems 9A426-02 manual Fddi Network Interface Block, ATM Network Interface Block

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Operation

FDDI Network Interface Block

The 9A426-02 Module’s FNB Interface includes an FDDI Network Interface Block (FNIB). Canonical frames processed by the module’s SmartSwitch ASIC core that are destined for one of the two FNBs on the SmartSwitch 9000’s backplane are first converted by the FNIB into FDDI packets and then transmitted onto the selected FNB. Conversely, FDDI packets received by the module from an FNB are converted by the FNIB into canonical frames and forwarded to the SmartSwitch ASIC core for processing.

ATM Network Interface Block

The 9A426-02 Module’s ATM Interface includes an ATM Network Interface Block (ANIB). ATM cells that enter the module’s front panel port(s) are converted by the module’s ANIB into canonical frames. The ANIB uses hardware (ASICs) to perform its conversions. The canonical frames are then forwarded to the SmartSwitch ASIC core (a separate set of ASICs on the module) for processing. Conversely, canonical frames processed by the module’s SmartSwitch ASIC core that are destined for front panel ATM ports are converted via ASICs in the ANIB into fixed length (53 byte) ATM cells and then transmitted to the ports. The ANIB uses encapsulation techniques in accordance with the ATM Forum LAN Emulation Specification. These techniques include the capability to encapsulate ATM data in either Ethernet or Token Ring frame formats.

SecureFast Virtual Networking

Secure Fast Virtual Networking combines the best elements of bridging and routing technologies with connection-oriented switching. Essential to Cabletron's SecureFast architecture is the ability to embed layer-three virtual routing services directly into its high-performance switches. Through a simple firmware upgrade, customers can add "intranet management" software to a broad line of Cabletron switches, including an installed base of over one million ports.

With Cabletron's "connection-oriented" architecture, users avoid latency and performance problems and can build intranetworks that more closely mirror the organizational structure of their business.

Since SecureFast Virtual Networking implements the same connection-oriented concepts as ATM, customers are guaranteed a smooth migration from packet- based LANs to cell-based technologies. SecureFast Switching allows customers to receive many of the benefits of ATM such as security and accountability within LAN infrastructures.

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Contents SmartSwitch 9A426-02 User’s Guide Page Page DOC Notice FCC NoticeVcci Notice Declaration of Conformity Page Contents CPU Chapter Lanview LEDs SpecificationsIntroduction Ietf Fddi MIB FeaturesLanview LEDs Getting Help Related ManualsModule’s Physical Layout Unpacking the Module9A426-02 Module’s two major circuit boards User-Accessible Components on the Module’s MotherboardLook-Up Engines APIMs Installing an Apim in the 9A426-02 ModuleSram SIMMs Removing the 9A426-02 Module’s ATM-Port Retaining Plate Unpacking an ApimATM-Port Retaining Plate Removing the ATM-Port Retaining Plate Inserting an Apim into the 9A426-02 ModuleAttaching an Apim to a 9A426-02 Module Attaching the 9A426-02 Module’s ATM-Port Retaining PlateUser-Accessible Components on the Module’s Daughterboard DIP Switch Switch Function Description Removing the Daughterboard from the Motherboard Securing SMB-1 Prom Installing the Module into the SmartSwitch 9000 Chassis Preparing and Installing the 9A426-02 Module 11. Installing the 9A426-02 Module 12. The Reset Switch Reset SwitchOperation Front Panel Backplane SMB-1 Bus LAN EmulationSystem Management Buses SMB-10 Bus System Diagnostic ControllerDC/DC Converter INB Network Interface BlockSecureFast Virtual Networking Fddi Network Interface BlockATM Network Interface Block I960 Core Lanview LEDs Status of the INB Receive LED is listed in Table Status of the FNB Receive LED is listed in Table Status of the ATM Transmit LED is listed in Table Status of the Apim Link LNK LED is listed in Table Lanview LEDs Address Table Size PowerTechnical Specifications MemoryStandards SafetyService Environment DimensionsWeight PhysicalSpecifications
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