Cabletron Systems 9A426-02 manual LAN Emulation, System Management Buses, SMB-1 Bus

Page 33

Operation

LAN Emulation

The 9A426-02 Module interconnects LANs over an ATM network through a method known as LAN Emulation. LAN Emulation, or LANE, is a

method that makes a connection-orientated ATM network look and behave like a shared connectionless Ethernet or Token Ring LAN Segment. Unlike other methods of interconnecting LANs over ATM, LANE can handle routable protocols such as TCP/IP, IPX and DECnet, as well as non-routable protocols such as NetBlOS and SNA.

LANE is an ATM Forum standard that is implemented by a variety of vendors and ensures the interoperability between vendors to allow connectivity from legacy LANs over an ATM backbone.

While LANE allows users to utilize ATM as a backbone between legacy LANs, it also allows legacy LAN users to communicate with native ATM devices such as file servers.

LANE allows you to retain equipment that is currently installed on your desktop, while providing the capability of a high-speed uplink to an ATM network. As such, it enhances your current equipment, as well as the equipment’s operating system software. LANE provides high-speed ATM performance, without a wholesale swap of hardware.

System Management Buses

There are two management channels within the SmartSwitch 9000 system: the SMB-1 and the SMB-10. These buses provide out-of-band management and intermodule management communication.

SMB-1 Bus

The SMB-1 is a 1Mbs management bus located within the SmartSwitch 9000. This bus is utilized by all diagnostic controllers in the system including connectivity modules, power supply modules and the environmental module. The SMB-1 transports inter-chassis information between system components, such as power and environmental information, as well as diagnostic messages. Periodic loop- back tests are performed by all modules which share this bus to ensure the validity of SMB-1. In the event a failure is detected on SMB-1, the SMB-10 may be used as an alternate communication channel.

3-3

Page 32 Page 34
Image 33
Page 32 Page 34
Contents SmartSwitch 9A426-02 User’s Guide Page Page FCC Notice Vcci NoticeDOC 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 Installing an Apim in the 9A426-02 Module Sram SIMMsAPIMs 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 LAN Emulation System Management BusesSMB-1 Bus DC/DC Converter System Diagnostic ControllerINB Network Interface Block SMB-10 BusFddi Network Interface Block ATM Network Interface BlockSecureFast Virtual Networking 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 Technical Specifications PowerMemory Address Table SizeSafety ServiceStandards Weight DimensionsPhysical EnvironmentSpecifications
Top Page Image Contents