HP StarLAN-to-10 Mbit/s Bridge, Technical Data HP LAN Interconnectivity Product Number 28647B The HP StarLAN-to-10 Mbit/s Bridge strengthens HP AdvanceNet's offering of scalable, flexible networking solutions. The bridge provides a versatility to connect an HP StarLAN 1 Mbit/s local area network (LAN) to a 10 Mbit/s ThinLAN, ThickLAN, or StarLAN 10 LAN. This capability allows the interconnectivity and extensibility required when planning and designing a network. In order to utilize the network bandwidth more efficiently, the bridge provides address filtering capabilities which isolate traffic and add security between workgroups. The StarLAN-to-10 Mbit/s Bridge is protocol independent and operates in both IEEE 802.3 and Ethernet environments. A new feature of the StarLAN-to-10 Mbit/s Bridge enhances network reliability. An protocol developed by the IEEE 802.1 committee, the Spanning Tree Protocol, permits IEEE 802 LANs to be bridged in an arbitrary topology that includes alternate or redundant paths. In the event of a primary link failure, a backup link would immediately take over, thereby ensuring continued data transmission between networks. The Spanning Tree Protocol is also beneficial in detecting and preventing illegal network configurations involving data loops. Features o Address filtering to provide traffic isolation, added network security, and improved performance in large networks, or high transmission networks o Extends the network for establishment of large LANs o Interconnects IEEE 802.3 and Ethernet networks o Transparent to network nodes and software, preserving your software investment o Supports arbitrary network topologies to provide alternate paths and redundancy in the case of link or component failures o Can be centrally monitored and controlled by HP OpenView BridgeManager (HP 28653A) Functional Description The HP StarLAN-to-10 Mbit/s Bridge sends and receives packets at the MAC layer which is a sublayer of the ISO Data Link Layer. From the perspective of the end nodes which are exchanging data, the bridge is transparent to the software in the Logical Link Control (LLC) sublayer and the higher layers of the ISO model. The bridge listens to all traffic between the two interconnected LAN segments and inspects the source and destination addresses to decide whether the traffic must be forwarded. Up to 512 addresses can be stored in the bridge. At power-on all HP StarLAN-to-10 Mbit/s Bridges and HP 10 Mbit/s-to- 10 Mbit/s LAN Bridges (HP 28648B) are configured into a spanning tree topology, which ensures at most one path between any two end nodes on the network. All bridges are initially placed into either a primary or backup mode. Each backup bridge monitors a primary link, ready to take responsibility for data transmission in the case of component failure. No initial configuration or user intervention is required for spanning tree operation. Compatibility o Compatible with HP's IEEE 802.3 LANs o Compatible with multivendor environments that conform to IEEE 802.3 or Ethernet standards Network Configurations o Networks can be extended with up to eight bridges between any two nodes. The segments interconnected can be extended additionally by using repeaters between bridges. o Redundant or alternate paths are permitted. o An HP ThinMAU (28641A) with integrated AUI cable can be extended up to 16 meters with additional AUI cables. o An HP ThickMAU (30241A) can be used with up to 50 meters of thick AUI cable. Network Management HP OpenView BridgeManager (HP 28653A) provides centralized monitoring and control of all HP StarLAN-to-10 Mbit/s Bridges and HP 10 Mbit/s-to-10 Mbit/s LAN Bridges (HP 28648B) in an extended LAN. Capabilities include configuration, collection and logging of network performance data, selective address filtering for enhanced network security, detection and notification of network error conditions, and control of spanning tree parameters to explicitly assign primary and backup bridges. Functional Specifications Operating Temperature: 0 degrees C to 55 degrees C (32 degrees F to 131 degrees F) Relative Humidity: 5% to 95% relative at 40 degrees C (104 degrees F) noncondensing Dimensions: 32.5 cm (12.8 in) by 32.5 cm (12.8 in) by 10.4 cm (4.1 in) Weight: 5.45 kg (12 lbs) Power Consumption: 55 watts (max) HP 28647B does not have any special power requirements, provided the installation site meets Environmental Class A specifications (office environment). Should the site not meet these specifications, you will need to upgrade your site to meet all warranty and service contract agreements. Your local HP Sales and Support Office can help you determine your site's status. Ordering Information The HP 28647B Bridge includes one bridge box with: 5062-3319 Bridge Mother Board 5062-3321 StarLAN Bridge Port Card 5062-3323 10-Mbit/s Bridge Port Card 5001-5602 Wall Mounting Bracket (2) 0624-0029 3/4-inch Wood Screws (4) 0515-0913 Machine Screws (4) 28647-90003 Installation Manual HP 28647B Options: 240 Adds one HP ThickMAU (30241A), Tap, and AUI cable 242 Adds one ThinMAU (28641A) Note: The LAN Bridge (HP 28647B) is intended to be customer installable. Therefore, a customer who would like to have the bridge installed by HP must contract installation service from their local sales office or project center. From HP Networking Communications Specifications Guide, 5091-3821E, 9205, p 553 Associated files: none HP StarLAN-to-10 Mbit/s Bridge, Technical Data