| Below in this document is the size of the DEChub 900. How accurate do
you need to be. Looking at these DEChub 900 documents the two
Installation manuals look promising.
DECHUB 900 MULTISWITCH HUB MANAGER EK-HUBMA-IN
DECHUB ONE INSTALLATION EK-DEHU2-IN
DECHUB ONE INSTALLATION EK-DEHUA-IN
DECHUB ONE-MX INSTALLATION EK-DEF1H-IN
If you need this in hurry send me a note as I might have these in my
office.
Network Hubs
DEChub 900 MultiSwitch
The DEChub 900 MultiSwitch delivers state-of-the-art hub functionality to
support even the largest, most complex networks. The DEChub 900 can support
multiple Ethernet, Token Ring, and FDDI LAN segments (as well as emerging,
higher-performance technologies such as ATM) in a broad range of
configurations. In addition, easy-to-use management software allows these
segments to be reconfigured electronically by switching connections
within the hub itself.
Features
o Backplane supports aggregate bandwidth of more than 3 Gb/s
o Supports multiple, independent LAN segments
o Segments assignable to any technology
o ATM-ready
o Provides investment protection -- compatible with all DEChub 90-series
modules; all DEChub modules install in the DEChub 90 in seconds and can be
easily swapped to accommodate changing network needs; all modules also
work standalone
o Connections reconfigurable among multiple technologies and network segments
o Includes integral SNMP hub manager
o Installable in offices or wiring closets
o Features easy-to-use "plug and play" that minimizes training and support
costs
o Includes redundant, high-availability power system
The DEChub 900 backplane accommodates up to 8 modules. All DEChub 90--series
modules are supported. Additionally, modules developed for the
DEChub 900 include:
o DECrepeater 900TM 32-port Ethernet repeater (DETMM)
o DECserver 900TM 32-port Network Access Server (DSRVZ)
o DECconcentrator 900MX 6-port FDDI concentrator (DEF6X/DEF6M)
o DECmau 900TL 8-lobe Token Ring multistation access unit (DTMAU)
o DECrepeater 900TL 100-ohm UTP Token Ring repeater (DTROR)
o DECrepeater 900SL 150-ohm STP Token Ring repeater (DTROS)
The DEChub 900 MultiSwitch complements the DEChub 90-series support for
workgroups and low-density, Ethernet-only connectivity. All DEChub Family
modules work in both standalone and hub-based configurations.
Specifications
DEChub 900: Height 57.8 cm (22.75 in)
Width 44.5 cm (17.5 in)
Depth 5.08 cm (2.0 in) (chassis only)
Weight 16.65 kg (37 lb) w/power supply
Full-height DEChub 900 module:
Height 48.25 cm (19.0 in)
Width 15.25 cm (6 in)
Depth 4.45 cm (1.75 in) (chassis only)
Weight 1.8 kg (4 lb) w/power supply
DECrepeater 900SL/TL or DECmau 900TL module:
Height 27.9 cm (11.0 in)
Width 3.2 cm (1.25 in)
Depth 14.0 cm (5.5 in) (chassis only)
Weight 0.77 kg (1.7 lb) w/power supply
Ordering Information
DEChub 900 MultiSwitch Order Codes
Option Order Code
DEChub 900 MultiSwitch 8-slot intelligent hub DMHUB-**
(includes one power supply)
DEChub ONE single-slot hub (required for standalone DEHUA-**
use of DEChub 900 modules; provides power and AUI
network port)
** Replace the ** with the following codes:
AA (United States, Canada, and Japan), AD (Denmark), AE (United
Kingdom), AI (Italy), AK (Switzerland), AT (Israel), AX (Central Europe),
AZ (Australia), BJ (India)
HUBwatch for OpenVMS VAX 2.0
HUBwatch for OpenVMS VAX 2.0 provides native SNMP graphical network management
for the DEChub Family. This software allows you to access the full power of
the DEChub 90 or DEChub 900 by clicking on a mouse. It translates SNMP messages
into pictures of the DEChub modules. You can also layer HUB on Digital's
enterprise management tools to integrate management of other Digital and
multivendor networking devices.
This product offers a wide variety of management capabilities. For example,
it can be used to switch modules in the DEChub 900 to different LAN channels
in order to balance network traffic and allocate bandwidth. For repeater
management, HUBwatch for OpenVMS VAX V2.0 uses easy-to-read gauges to convey
statistical information on octets, frrames, collisions, and errors. It also
provides full security to the port level, preventing network intrusion and
eavesdroppiing.
HUBwatch for OpenVMS VAX V2.0 also lets you remotely manage terminal servers
with ease. Port, counter, and module detail screens are all available. HUBwatch
makes it easy to see the number of active sessions per port. It generates a
list of nodes to which each session is connected. It can also list the remote
IPP addresses for telnet.
Features
o Offers simple point-and-click commands, descriptive icons, and
context-sensitive help for easy management for the DEChub Family
o Provides a consistent user interface for both in-band and out-of-band access
o Supports full repeater and terminal server management
o Features ease of use -- graphical screens help you quickly identify and
isolate fault conditions from the hub
o Manages down to the port level
o Provides "LAN hopping" capability for the DEChub 900
HUBwatch Prerequisites:
Hardware Prerequisites
o VAXstation 4000-60 with 24 MB of memory and 15 MB of disk space (miniumum)
is recommended.
o DECagent 90 (with V1.1 firmware) for use with the DECbridge 90/90FL and
DECserver 90L/L+. (Note: The DECagent 90 does not need to be in the
DEChub 90/900, but it must be installed on the same LAN in order to manage
the devices.)
Software Prerequisites
o OpenVMS VAX 5.4+
o DECwindow Motif
o TCP/IP Service for OpenVMS VAX (included with NAS 250 services)
o Bookreader 4.0
HUBwatch for OpenVMS VAX 2.0 can be layered of top of POLYCENTER and other
network management platforms.
Full graphical management of the DEChub 900 is available through out-of-band
management using SLIP. A DECserver 90TL/90M/900TM or DECserver 700 (non-hub)
is needed to take advantage of this feature. Any of these products can be used
to provide the SLIP interface to the DEChub 900 management module via a
DECserver port connection to the DEChub 900 out-of-band port.
Ordering Information
HUBwatch for OpenVMS VAX Order Codes
Option Order Code
HUBwatch for OpenVMS VAX license QL-0GEA9-AA
HUBwatch for OpenVMS VAX media kit QA-0GEAA-H5
HUBwatch for OpenVMS VAX documentation QA-0GEAA-GZ
DECrepeater 900TM
The DECrepeater 900TM is a 802.3 10BaseT (twisted pair) 32-port repeater for
use with either 100-ohm shielded or unshielded twisted pair wire. It can be
used in the DEChub 900 MultiSwitch or as a standalone repeater in a DEChub
ONE configuration.
This repeater has an integral SNMP agent. Simply add HUBwatch software to
your LAN for port-level repeater statistics and control that help you manage
your network. In addition, port-level security helps you detect and prevent
unauthorized use of the LAN. To keep networking costs low, this repeater's
flash RAM memory lets you upgrade software and firmware over the network.
The DECrepeater 900TM also offers full retiming per port to eliminate the
need for a separate retiming module.
Features
o 32 10BaseT ports support STP/UTP
o Integrated, port-level SNMP management (using HUBwatch)
o Full repeater per port -- no retiming module needed
o In-band and out-of-band management capability
o Port-level intrusion detection and eavesdropping prevention
o Software/firmware upgrading over the network
o Configuration flexibility -- for use as a standalone unit, rackmounted, or
in the DEChub 900
Configuring Information
o The DECrepeater 900TM uses RJ45 shielded connectors.
o In the DEChub 900, the DECrepeater 900TM can sit on either the ThinWire or
the IMB backplane, or both. This repeater makes full use of the IRB
capabilities of the DEChub 900. When configuring per the IEEE 802.3/Ethernet
repeater rules, hops between repeaters count as one repeater hop.
o To connect the standalone DECrepeater 900TM to fiber, ThinWire, or twisted
pair, order the MAU that meets your media needs. (Refer to the DECserver 900TM
section for DETPM-AA, DECXM-AA, and DEFLM-AA information.)
Ordering Information
DECrepeater 900TM Order Codes
Option Order Code
DECrepeater 900TM (DEChub 900-based model) DETMM-**
DEHUA-AA
** Replace the ** with one of the following codes:
AA (United States, Canada, and Japan), AD (Denmark), AE (United Kingdom),
AI (Italy), AK (Switzerland), AT (Israel), AX (Central Europe),
AZ (Australia), BJ (India, South Africa)
DECserver 900TM
The DECserver 900TM is a 32-port multiprotocol server for the DEChub 900. It
comes with DECserver Network Access Software, which supports LAT, TCP/IP,
Telnet, SLIP, CSLIP, Point-to-Point Protocol, TN3270, and Kerberos security
protocols.
This high-performance hardware platform is configured with four MB of memory.
Its memory capacity can be expanded to eight MB with customer- installable
SIMM memory cards. The DECserver 900TM is "flash ready".
Features
o High performance -- supports 215,000 characters-per-second throughput and
line speeds up to 115.2 Kb/s per port
o DECserver Network Access Software support
o Flash card option available
o Base memory of 4 MB with capability to expand up to 8 MB
o Software-selectable limited modem control signaling (for Medium-to-High
speed: DTR/DSR/RTS/CTS; for Low-to-Medium speed: DTR/DSRS/DCD/RI)
o Configuration flexibility -- can be installed in the DEChub 900 MultiSwitch
or used as a standalone unit
The following chart displays information for the DEChub Family of communication
server products.
Summary of DEChub Communications Servers
Product DECserver 90L+ DECserver 90TL
Hardware DSRVG DSRVE
Type
Number of 8 8
Ports
Memory 1
DRAM MB <1 No
ROM Yes No
FLASH No No
Port Speed 38.4 57.6
(Kb/s)
Throughput 36 30
Characters-
per-second (K)
Protocol LAT LAT
Telnet
SLIP
Summary of DEChub Communications Servers (continued)
Product DECserver 90M DECserver 900TM*
Hardware DSRVH DSRVZ-MA
Type
Number of 8 8
Ports
Memory 4 4
DRAM MB No No
ROM Yes (selected models) Option
FLASH Yes Option
Port Speed 57.6 11.5
Throughput 30 215
Characters-
per-second (K)
Protocol LAT LAT
Telnet Telnet
SLIP SLIP
CSLIP CSLIP
PPP PPP
TN3270 TN3270
Kerberos Kerberos
* For DEChub 900
Ordering Information
DECserver 900TM Order Codes
Option Order Code
DECserver 900 (DEChub 900-based model) DSRVZ-MA
DEChub ONE DEHUA-**
AUI x 10BaseT (UTP) MAU DETPM-AA
AUI x 10Base2 (ThinWire) MAU DECXM-AA
AUI x 10BaseFL (fiber) MAU DEFLM-AA
Flash Card, 2 MB with software H0345-AA
1 MB SIMM MS40-WA
4 MB SIMM MS40-WB
DECserver Network Access Software:
Software Media Kit VAX/OpenVMS (TK50) QA-0LWAA-H5
Software Media Kit VAX/OpenVMS (16MT) QA-0LWAA-HM
Software Media Kit ULTRIX (TK50) QA-0LWAB-H5
Software Media Kit ULTRIX (16MT) QA-0LWAB-HM
Software Media Kit MS-DOS (RX24) QA-0LWAC-HB
Software Media Kit MS-DOS (RX33) QA-0LWAC-H7
Software Media Kit UNIX (RX23) QA-0LWAD-HC
Software Media Kit UNIX (QIC) QA-0LWAD-HP
Software Media Kit Alpha AXP (TK50) QA-0LWAE-H5
Software Media Kit Alpha AXP (16MT) QA-0LWAE-HM
Software Media Kit Alpha AXP/OSF/1 (CD-ROM) QA-054AA-H8
** Replace the ** with the following codes:
AA (United States, Canada, and Japan), AD (Denmark), AE (United
Kingdom), AI (Italy), AK (Switzerland), AT (Israel), AX (Central Europe),
AZ (Australia), BJ (India)
(Note: DECserver Network Access Software documentation must be purchased
separately.)
DECconcentrator 900MX
The DECconcentrator 900MX supports six front-panel FDDI station connections
using multimode fiber, single-mode fiber, or unshielded twisted pair (UTP)
cable. Multiple DECconcentrator 900MX modules may be interconnected via the
backplane ports to create a single "treed" FDDI network. You can also configure
separate FDDI networks, all manageable from the hub.
The DECconcentrator 900MX comes in two models. The DEF6X-MA allows for custom
configuration of media support for each port. The DEF6M-MA comes preconfigured
with ANSI MIC multimode optics.
Features
o Six front panel and two backplane FDDI ports
o Flexibility to specify media on a per-port basis; media changes are easily
accommodated with customer-installable modular media connectors
o Selected ports are software configurable to support either direct ring
connection or "treeing"
Configuration Notes
o DECconcentrator 900MX Software V1.0 is preloaded on each module.
o Front panel ports 1 and 6 and both backplane ports are software configurable
to support either direct ring connection (A/B ports) or "treeing" (M ports).
o A DEChub ONE variant specifically designed for this concentrator is required
for standalone use.
Ordering Information
DECconcentrator 900MX Order Codes
Option Order Code
DECconcentrator 900MX (without MOD-PMDs; DEF6X-MA
DEChub 900-based model)
DECconcentrator 900MX (preconfigured with six DEF6M-MA
ANSI multimode MOD-PMDs; DEChub 900-based model)
Note: Order up to six MOD-PMDs per DEF6X-MA.
Multimode fiber ANSI MIC connector supporting up to 2 km DEFXM-AA
Single-mode fiber ST connector supporting up to 40 km DEFXS-AA
Refer to Software Product Description 46.66.00 for more
information about DECconcentrator Software V1.0.
802.5/Token Ring Products for use with the DEChub 900
Digital offers 802.5/Token Ring customers products and services to begin
building their Token Ring workgroup LANs, allowing those LANs to expand and
then be integrated into a more complex backbone network environment. Digital
is adding the following products to its comprehensive portfolio of
802.5/Token Ring products and services:
o DECmau 900TL Multistation Access Unit (MAU) and DECrepeater 900TL and 900SL
UTP and STP repeaters - enable users to build reliable standalone Token Ring
workgroups that can later be integrated into a hub-based solution and expanded
as the customer's needs change. (See the following sections for more details.)
DECmau 900TL
The DECmau 900TL is a wiring center that provides robust Token Ring LAN
connectivity at 4 Mb/s and 16 Mb/s ring speeds. Use its Ring In/Ring Out
ports to extend your Token Ring LAN with multipole trees. The DECmau 900TL
features automatic speed detection, which prevents insertion of stations at
mismatched speeds. Ring autowrap maintains ring integrity in the event of
device or cable failure. Both 100-ohm shielded and unshielded twisted pair
cabling are supported, as well as 150-ohm shielded twisted pair cabling
(BN26T-03 adapter cable required for 150-ohm support.).
The DECmau 900TL uses shielded RJ45 connectors.
Features
o IEEE/802.5 and IBM Token Ring compatibile
o Supports 4 Mb/s and 16 Mb/s
o Provides 8 lobe ports for a star-wired topology
o Automatic speed detection -- prevents ring failure due to insertion of an
incorrectly matched station
o Ring autowrap -- eliminates ring failure due to device or cable failure
o Ring In/Ring Out Ports -- permit extension without additional hardware devices
o 100-ohm UTP/STP 150-ohm STP operation -- accommodates all Token Ring cabling
in use today
o Configuration flexibility -- operates standalone or in the DEChub 900
DECrepeater 900TL
DECrepeater 900SL
The DECrepeater 900 SL (150-ohm STP) and the DECrepeater 900TL (100-ohm
STP/UTP) are Ring In/Ring Out repeater modules that let you extend the
distance between MAUs and hubs. They can also be used as lobe extenders for
end stations. These repeaters feature automatic speed detection and ring
autowrap to ensure reliability. They support all Token Ring cables available
today. Both repeaters operate standalone and in the DEChub 900 MultiSwitch.
Features
o IEEE/802.5 and IBM Token Ring compatible
o 100-ohm UTP and STP support (DECrepeater 900TL); 150-ohm STP support
(DECrepeater 900SL) -- accommodates all Token Ring cabling in use today
o Repeats and retimes Token Ring LAN signals through Ring In and Ring Out
connections to ensure reliability
o Automtic speed detection -- prevents ring failure caused by installing an
incorrectly matched station
o Ring autowrap -- eliminates ring failure due to device or cable failure
o Configuration flexibility -- operates standalone or in the DEChub 900
Configuration Notes
o The DECrepeater 900SL, with DB9 connectors, supports 150-ohm STP cabling.
o The DECrepeater 900TL, with RJ45 connectors, supports 100-ohm UTP/STP
cabling. This repeater also supports 150-ohm IBM data cabliing (BN26T-03
adapter cable required).
Ordering Information
DECmau 900TL, DECrepeater 900TL and
DECrepeater 900SL Order Codes
Option Order Code
DECmau 900TL (standalone model; includes DEChub ONE) DTMAU-**
DECmau 900TL (DEChub 900-based model) DTMAU-MA
DECrepeater 900TL (standalone model; includes DEChub ONE) DTROR-**
DECrepeater 900TL (DEChub 900-based model) DTROR-MA
DECrepeater 900SL (standalone model; includes DEChub ONE) DTROS-**
DECrepeater 900SL (DEChub 900-based model) DTROS-MA
100/150-ohm adapter cable -- 3 m (9.8 ft) BN26T-03
Replace the ** with the following codes: AA (United States, Canada, and
Japan), AD (Denmark), AE (United Kingdom), AI (Italy), AK (Switzerland),
AT (Israel), AX (Central Europe), AZ (Australia), BJ (India)
The BN26T-03 patch cable is used to connect traditional Token Ring cable data
connectors to RJ45 port connections. The BN26T-03 is an active balun, providing
150/100-ohm impedance matching.
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