LattisNet(R) Local Token Ring Bridges Highlights * Enable implementation of large, multi-ring Token Ring backbone networks with high- performance bridging * Modular and stand-alone options deliver complete configuration flexibility * Allow controld access to centralized resources, including file servers and IBM hosts, through Token Ring backbone LANs * Incorporate Madge Networks' FASTMAC technology to deliver high-throughput 9,000- packet-per-second performance, eliminating bottlenecks for 16 megabit per second (Mb/s) networks * Supports multiple management options, including SNMP management of all bridges throughout the network * Manageable from existing IBM LAN Network Manager and NetView stations for easy fit into existing Token Ring environments * Designed to support emerging IEEE 802.5 Source Route Transparent (SRT) standard for Token Ring bridging * Monitor port enables protocol analysis of remote Token Ring networks through local connections * Extensive, customizable filters based on broadcast, address, protocol and more The LattisNet(R) local Token Ring bridge supports high-performance interconnections between SynOptics Token Ring networks, delivering a new level of functionality for building and managing large, compl networks. The bridge contributes to SynOptics' complete hub-based Token Ring connectivity and management solution by enabling customers to build widespread networks that allow users to access centralized resources, such as file servers and IBM hosts, through backbone LANs. Two configurations of the bridge are available to provide maximum flexibility. The modular Model 3522 resides in a LattisNet System 3000 concentrator to support hub-based implementations, while the stand-alone Model 2722 links SynOptics and other IEEE 802.5- compatible devices in geographically-dispersed environments. Model 3522 Local Token Ring Bridge Module The Model 3522 Local Token Ring Bridge module links independent Token Ring networks running at 4 or 16 Mb/s, providing an integrated solution for building large, hub-based Token Ring backbone networks. The module links rings operating in separate hubs through an external cable connection, enabling rings to communicate without the use of external devices. To connect rings running within a single System 3000 concentrator, the Model 3522 links the two Token Ring busses in the concentrator directly, eliminating the need for external connections or cables. Each ring operates independently, with their own separate network management and host modules. The Model 3522, which occupies a single slot in a SynOptics Model 3000 Premises or Model 3030 Department concentrator, features a front-panel DB-9 shielded twisted pair (STP) lobe connector for linking concentrators via available structured cabling. For networks utilizing fiber optic backbones, or where distances between concentrators exceed 200 meters, the LattisNet Model 354-ST Fiber Extender can be used with the bridge to link concentrators separated by up to two kilometers. Model 2722 Local Token Ring Bridge The Model 2722 Local Token Ring Bridge is a stand-alone unit that can be used in conjunction with SynOptics' LattisRing(tm) Token Ring workgroup hubs, as well as other IEEE 802.5- and IBM-compble MAUs. Two front-panel DB-9 STP lobe connectors provide the interface between devices, and two local monitor ports allow easy analysis and troubleshooting of physically- distributed rings from a central location. Token Ring Bridge Performance SynOptics' local Token Ring bridges deliver some of the fastest throughput of any available Token Ring bridge. Utilizing FASTMAC technology from Madge Networks, the bridges forward data traffic at a rate of 9,000 packets per second (pps) - nearly triple the throughput available with conventional Token Ring bridges. The addition of a custom-designed circuit to accelerate transparent bridging and Content Addressable Memory (CAM) chips to speed station address lookup enables the bridges to maintain data rates on the most heavily-loaded rings, eliminating bottlenecks on 16 Mb/s backbone networks. Source Route-Transparent Bridging The local Token Ring bridges are designed to support the emerging IEEE 802.5 Source Route Transparent (SRT) standard, which combines the IBM source routing algorithm with the transparent bridging commonly employed by other protocols. The new standard, completely compatible with existing source routing technology, will enable source-routed and non source- routed data to be forwarded on the same network, allowing end-to-end connectivity for both IBM and non-IBM traffic. Since the SRT standard is not yet final, LattisNet local Token Ring bridges currently support source route bridging only. Once the standard has been finalized and fully tested, SynOptics will add the SRT implementation through a software upgrade. Bridge Management The Model 3522 and Model 2722 local Token Ring bridges can be managed through both SynOptics and IBM management systems, allowing them to be seamlessly integrated into any IBM-compatible Token Ring environment and managed from the existing management system. The bridges are fully compatible with SynOptics' LattisNet Manager(tm) for DOS and the UNIX-based Optivity(tm) managemstems, enabling network managers to monitor and control bridges and hubs from the same management station. Bridges are managed through a Telnet menu-oriented interface, accessed by clicking on a bridge icon on the management station map. Telnet, using the industry-standard TCP/IP protocol, enables network managers anywhere on the ring to easily set custom filters, monitor bridge throughput, change bridge parameters, or perform a number of other configuration and performance monitoring functions from a single, central site. An upcoming release will support an external Simple Network Management Protocol (SNMP) agent, providing a standards-based solution for managing the bridges from other SNMP-compatible management systems. The bridges participate in SynOptics' Autotopology(tm) dynamic mapping feature, which automatically creates and updates a real-time map of the network topology so network managers can view all bridges in the network. The bridges also support SynOptics' Expanded View(tm) ation, which provides a real-time graphical image of selected devices for precise monitoring and control. IBM Compatibility LattisNet local Token Ring bridges are also compatible with IBM LAN Manager Version 2.0, enabling network managers in an SNA environment to access and control bridging functions. IBM compatibility enables the bridge to be installed and managed within existing IBM bridging environments, requiring no modification to existing hardware or management procedures. In networks using IBM's NetView, the SynOptics bridges can be managed identically to other IBM bridges on the network via a local LAN Network Manager console. Other Token Ring Bridge Features LattisNet local Token Ring bridges support a number of other features, including: * Customizable Filters: A customizable filtering capability allows managers to screen out specific protocols or address ranges. Static filters, based on hop count, frame size, station addresses, ranges, multicast or broadcast addresses, can be selectively filtered. Protocol filters allow managers to limit traffic to specific networks based on NetBIOS names, as well as 12 standard LSAP protocols and 12 standard SNAP headers. * Local Monitor Port: A front-panel RJ-45 local monitor port enables LAN analyzers such as the LattisNet Model 3040 Network Control Engine(tm) or the Network General Sniffer(tm) to directly monitor Token Ring networks attached through bridged lobe connections. By accommodating locally-attached ans, the port allows network managers to monitor traffic on all bridged rings without requiring a physical attachment to remote hubs. * Flash EPROM Local Image: On-board Flash EPROM allows the bridges to boot locally without requiring a network server. Flash EPROM also allows a locally-stored boot image to be easily updated when revisions become available, enabling new software to be installed without requiring any hardware changes. Downloading of software images is accomplished through standard BOOTP/TFTP protocols, used on all SynOptics management stations. For large bridged networks, this allows new software images to be installed on a single management station and downloaded across the network to each bridge. Flash EPROM also allows all user-configured parameters to be stored locally in non- volatile memory, enabling bridges to resume operation with the same configuration following a power failure. * Local Console Port: An RS-232 port accommodates local consoles such as ASCII terminals for performing bridge management in the wiring closet. * Front-panel LEDs: A series of front-panel LEDs report bridge configuration and status conditions at a glance. LattisNet Local Token Ring Bridges Specifications Data Rates 16 Mb/s or 4 Mb/s differential Manchester encoding, IEEE 802.5 Compatibility IEEE 802.5 Token Ring access method and physical layer specifications IBM compatible Main Processor 25 Mhz 68030 Forwarding Table Size 4,096 entries total Frame Length 16 - 17,408 bytes Forwarding Rate 9,000 frames per second max Frame Filter Rate (Transparent Bridging) 21,000 frames per second max at 4 Mb/s 85,000 frames per second max at 16 Mb/s Memory 1 Mb Program RAM 1 Mb Shared I/O memory 1 Mb Flash EPROM 128 Kb battery backed up NVRAM for local parameter storage Electrical Specifications Power Consumption: Model 3522: 40 watts @ +5V; 2 watts @ +/-12V Model 2722: 44 watts Thermal rating: Model 3522: 136 Btu/hr max Model 2722: 13.5 Btu/hr max Environmental Specifications Operating temperature: 5*C to 40*C; storage temperature: -25*C to 70*C Operating humidity: 85% max relative humidity; storage humidity: 95% max relative humidity Operating altitude: 10,000 ft (3,048 m), 40*C max Free fall/drop: ISO 4180-2, NSTA 1A Vibration: IEC 68-2-6/34 Stock/bump: IEC 68-2-27/29 Physical Dimensions Model 3522: (H) 15 in x (W) 1.2 in x (D) 10.5 in [(H) 38.1 cm x (W) 3.1 cm x (D) 26.7 cm] Model 2722: (H) 3.5 in x (W) 17.3 in x (D) 16 in [(H) 8.9 cm x (W) 43.8 cm x (D) 40.6 cm] Weight Model 3522: 4.0 lbs (1.8 kg) Model 2722: 3.0 lbs (1.4 kg) Flammability PCB designed to meet UL 94-V1 Electromagnetic Emissions Meets FCC Part 15, Subpart J, Class A and B Meets EN 55 022 (CISPR 22: 1985), Class B Meets General License VDE 0871, Class B (AmtsblVfg 243/1991, 46/1992) Meets VCCI Class 1 ITE Electromagnetic Susceptibility Electrostatic discharge (ESD): IEC 801-2, Level 2/4 Radiated electromagnetic field: IEC 801-2, Level 2 Electrical fast transient/burst: IEC 801-4, Level 2/3 Electrical surge: IEC 801-5, Level 1/3 Safety Agency Approvals UL listed (UL 1950) CSA certified (CSA 22.2, #950) TUV licensed (EN 60 950) Corporate Headquarters SynOptics Communications, Inc. 4401 Great America Parkway Santa Clara, CA 95054 Tel (408) 988-2400 Fax (408) 988-5525 LattisRing, LattisNet Manager, Optivity, Autotopology, Expanded View and Network Control Engine are trademarks and LattisNet and SynOptics Communications are registered trademarks of SynOptics Communications, Inc. Other brand and product names are trademarks or registered trademarks of their respective holders. DA505-165US-B Caption: SynOptics' Model 3522 and Model 2722 Local Token Ring Bridges allow internetworking from each floor to a backbone network, easing backbone access and improving overall network performance.