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Power Tools 1993 October - Disc 1
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Power Tools (Disc 1)(October 1993)(HP).iso
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a3821553
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1992-05-09
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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