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Power Tools 1993 November - Disc 1
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Power Tools Plus (Disc 1 of 2)(November 1993)(HP).iso
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a3821540
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1992-05-16
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HP EtherTwist Hub Plus and Hub Plus/48, Technical Data
Part Numbers 28688B and 28699A
The HP EtherTwist hubs are Type 10BASE-T multiport repeaters for use in
twisted-pair LANs. These hubs deliver industry-leading
price/performance in both large and small networks. They offer network
management, and they support growing topologies with flexible backbone
connections.
The HP EtherTwist Hub Plus and Hub Plus/48 are designed for networks
that require LAN-based network management. They provide 12 and 48
twisted-pair ports, respectively.
The EtherTwist hubs are part of the HP EtherTwist family of network
components. These LAN components - hubs, bridges, adapter cards, and
transceivers - provide your network with high performance in a low-cost
hardware solution. Easily racked together and connected with a thin
coaxial cable between their integrated BNC ports, the hubs, bridges, and
routers merge with each another along a virtual extended backplane. This
gives you full cardcage-like functionality without the expense and
limitations of a cardcage design. Using only a few different hardware
components, each designed for optimum price/performance, you can build a
network that ranges from a few nodes to thousands.
Features
o Provides 12 twisted-pair ports (Hub Plus) or 48 ports (Hub Plus/48).
o Complies with IEEE 802.3 Type 10BASE-T standard.
o Supports 100 meters of cable to each PC adapter card or twisted-pair
transceiver. Greater distances are possible with low-loss cable.
o Allows choice of 50-pin or 8-pin connections. You can connect a
25-pair bundle (50-pin Telco connector) or individual 4-pair cables
with modular RJ-45 plugs (using an optional 12-port modular adapter,
HP 28638A).
o Supports both IEEE 802.3 and Ethernet 1.0 and 2.0 standards.
o Includes BNC and AUI ports for simultaneous connection to both thin
coaxial cable and (via transceiver) thick coaxial, fiber-optic, or
twisted-pair cable.
o Isolates network faults by automatically segmenting ports disturbing
the network.
o Includes LEDs for a quick visual check of individual link status, port
segmentation, collisions, activity, and power.
o Provides console (RS-232) port for out-of-band management, which
allows users to read network statistics and configure ports in the
hub. This port connects to a terminal or terminal emulator either
directly or via modem.
o Is transparent to network operating system software.
o Supports fully existing HP StarLAN 10 networks.
o Supports SNMP/IP-based network management.
o Includes link test diagnostics to perform loopback test on any path
through the network.
o Mounts on wall (flat or on end) or mount in racks with cables facing
front or back.
o Supports a redundant link so one port can back up another for intra
link connections
Flexible Cabling
5
The EtherTwist hubs provide flexible connections for both subnets and
backbones. The twisted-pair ports let you take advantage of twisted-pair
LAN cabling, with its ease of installation and administration.
Twisted-pair connections are made through a 50-pin Telco connector on
the back of the hub (4 on a Hub Plus/48). This allows you to make a
single connection using a 25-pair bundle (typically running to a
cross-connect block). Or you can attach a 12-port modular adapter
(HP 28638A purchased separately), which breaks out the 50-pin connector
to 12 modular (RJ-45) jacks; these provide the connections for 4-pair
cables that serve individual stations on the network.
You can make backbone connections to the hub using the integrated
ThinLAN (BNC) port for thin coax, and the AUI port for thick coax or
optical fiber. Both the ThinLAN and AUI ports can be connected at the
same time. You can connect multiple hubs to a thin coaxial "backplane,"
which in turn can be connected to another backbone via the AUI port.
In addition, you can cascade hubs with twisted-pair cabling, using
either a direct connection between twisted-pair ports on each hub, or
using a twisted-pair to AUI connection through a twisted-pair
transceiver (HP 28685B).
Compatibility to Meet Your Changing Needs
HP's EtherTwist hubs are fully compliant with the 10BASE-T standard.
HP has done extensive compatibility testing with other 10BASE-T
equipment on the market today, giving you the confidence you need to
build a multivendor network that best fits your business requirements.
In addition, the HP EtherTwist hubs are completely backward-compatible
with HP StarLAN 10 adapter cards, transceivers, and hubs through
configuration of the link integrity signal (link beat).
Maximum Reliability Through Fault Isolation
An HP EtherTwist hub automatically identifies any segment disturbing the
network and disconnects it from the rest of the network
(autosegmentation), ensuring network integrity. Once the problem is
corrected, the hub automatically reconnects the segment.
Control of Your Network with Hub Management
The HP EtherTwist Hub Plus and Hub Plus/48 support SNMP/IP and can
communicate over the LAN with HP OpenView Hub Manager for DOS
(HP 28686D) and HP OpenView Interconnect Manager for HP-UX. From a
single network management station, a network administrator can monitor
and control any Hub Plus on the network. Hub Manager continuously
updates the OpenView Windows graphical network map to display the
current state of the network, and notifies the network administrator of
network events. Configuring, monitoring, and controlling the network is
made easy with the HP OpenView device managers and the HP EtherTwist Hub
Pluses.
Coupled with HP OpenView Resource Manager, the HP Hub Pluses are
capable of providing instrumentation-like functions across your network.
This will eliminate the need for a LAN analyzer per segment. HP EASE
(Embedded Advanced Sampling Environment) is a breakthrough technology
that allows HP EtherTwist devices to do protocol analysis. This will
identify top talkers, heavy users, errors, and communication pairs.
HP WireTest and Cabling
6
HP EtherTwist local area networks use twisted-pair cabling (ordinary
telephone wire). Two pairs of 22, 24, or 26 AWG unshielded twisted-pair
wire are required for each connection. Shielded twisted-pair wire can
also be used.
The HP WireTest Service is available to qualify your existing
telephone cabling for use in a Type 10BASE-T network. Contact your local
HP Sales and Support Office or your HP Authorized LAN Dealer for
information and availability of this service. If you have a large
network and wish to do your own testing, you can purchase the HP 28687A
Wire Test Instrument.
Specifications
Environmental Characteristics
Operating Temperature:
0 degrees C to 55 degreesC (32 degrees F to 131 degrees F)
Relative Humidity:
5% to 95% at 40 degrees C (104 degrees F) noncondensing
Physical and Electrical Characteristics: HP EtherTwist Hub Plus
Dimensions: 42.55 cm by 23.50 cm by 4.37 cm
(16.75 in by 9.25 in by 1.72 in)
Weight: 2.72 kg (6.0 lb)
Power Consumption:
ac Voltage: 100-120 200-240 V
Current: 0.5 A max 0.5 A max
Frequency: 50/60 Hz 50/60 Hz
HP EtherTwist Hub Plus/48
Dimensions: 42.55 cm by 23.50 cm by 8.87 cm
(16.75 in by 9.25 in by 3.49 in)
Weight: 3.77 kg (8.3 lb)
Power Consumption:
ac Voltage: 100-120 200-240 V
Current: 0.6 A max 0.5 A max
Frequency: 50/60 Hz 50/60 Hz
Standards
Emissions:
VDE 0871 Level A
VCCI Class 1
FCC Part 15 Class A
Safety:
UL 1950
IEC 950/EN60950
CSA 220
CSA 950
7
Radiated Emission Immunity: IEC 801-2.3.4
Warranty
The HP 28688B and HP 28699A EtherTwist Hub Pluses are warranted for one
year against defects. Check with your local Hewlett-Packard Sales and
Support Office or your authorized HP LAN Dealer for more information.
Ordering Information
HP 28688B EtherTwist Hub Plus
HP 28699A EtherTwist Hub Plus/48
HP 28638A Modular Adapter
HP 28689B Troubleshooting Kit
From HP Networking Communications Specification Guide,
5091-3821E, 9205, p 540
Associated files: A3821540.DOC
HP EtherTwist Hub Plus and Hub Plus/48, Technical Data