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1992-05-16
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29
ThinLAN 3000/XL Link Technical Data
For HP 3000 Series 900 Computer Systems Product Number 36923A
The ThinLAN 3000/XL Link provides the hardware and software to connect
an HP 3000 Series 900 computer to a multivendor LAN. The LAN/3000 Link
includes the hardware interface card and the device driver, network
transport, and network management agent software. The LAN/3000 Link
connects to either Ethernet LANs, IEEE 802.3 LANs, or both.
[Figure 1 (ThinLAN 3000/XL Link) Caption: none]
The network transport software includes the industry standard TCP, UDP,
and IP protocols, along with both the BSD sockets and HP NetIPC APIs.
Users may write their own software to access the network via an API, or
they may purchase one of the higher level networking services (ARPA, NS)
provided by HP and supported over the LAN/3000 Link.
Features
o Network transport software provides the ARPA TCP, UDP, and IP
protocols.
o BSD sockets API provides access to TCP and UDP.
o HP NetIPC API provides access to TCP.
o Supports Ethernet and IEEE 802.3 protocols.
o Supports 10 Mbits/s burst transfer rate.
o Uses a microprocessor-driven interface controller to minimize the
HP 3000 overhead associated with datacommunications processing.
o Supports connections to thin coaxial cable, thick coaxial cable, and
unshielded twisted-pair wiring.
o Any node may be attached or removed while the network is active.
o Integrated node management software provides on-line configuration and
logging.
o Integrated network management agent software supports SNMP.
Functional Specifications
________________________________________________________________________
Cable Type: ThinLAN ThickLAN EtherTwist
(Thin coaxial) (Thick coaxial) (Unshielded
twisted-pair)
________________________________________________________________________
IEEE cable Type Type Type
specification 10BASE2 10BASE5 10BASE-T
________________________________________________________________________
Maximum segment 185 meters 500 meters 100 meters
length hub to node
________________________________________________________________________
Maximum number of 30 100 N/A
nodes per segment
________________________________________________________________________
Minimum distance 0.5 meters 2.5 meters N/A
between nodes
________________________________________________________________________
Maximum AUI 50 meters 50 meters 50 meters
cable length
________________________________________________________________________
30
Functional Description
The LAN/3000 link provides the hardware and software to connect an
HP 3000 Series 900 computer system to a multivendor Local Area Network
(LAN). The LAN/3000 link supports system-to-system communications to
other HP 3000s; HP 1000s, 9000s, and PCs; as well as other systems
supporting TCP/UDP/IP over Ethernet/802.3 wiring. The hardware
components of the link include the Local Area Network Interface
Controller card (LANIC), the Medium Attachment Unit (MAU), and in some
cases, an Attachment Unit Interface (AUI) cable. The software components
of the link include the LANIC device driver, the TCP/UDP/IP network
transport, and the BSD sockets and HP NetIPC APIs.
Some of the components in the LAN/3000 Link are bundled with selected
HP 3000 systems. The components may also differ, depending on the
specific system. Please see the ordering instructions below for more
details.
Hardware Components
Note: The standard LAN/3000 Link connects to a thin coaxial cable (IEEE
Type 10BASE2); connections to thick coaxial cable (IEEE 10BASE5) or
unshielded twisted-pair wiring (IEEE Type 10BASE-T) are also available
but optional.
Local Area Network Interface Controller (LANIC)
The LANIC is a microprocessor-based communication controller that plugs
into the HP 3000 Series 900 backplane. It handles buffering, the IEEE
802.2 and 802.3 protocols, error checking, and keeps track of network
statistics. When addressed by another node on the network, the LANIC
receives frames of information and checks the accuracy of the data
before passing the frames to the host. To transmit data, an addressed
frame is sent from the host to the LANIC, which adds error checking
information. The LANIC then tests to see if the cable is busy and, if
not, transmits the frame.
Features
- On-board microprocessor capable of receiving multiple back-to-back
packets.
- IEEE 802.2 link-level protocol handling.
- IEEE 802.3 Carrier-Sense Multiple Access with Collision Detection
(CMSA/CD) access method handling.
- Supports multicast, broadcast, and individual addressing.
- Frame length up to 1500 bytes.
- Built-in self-test
- On-line diagnostics run under MPE.
- Collects LAN statistics (collided packets, bad packets, etc.).
- HP Precision Bus (HP-PB) card comes with ThinLAN transceiver and AUI
port.
[Figure 2 (Ethernet wiring) Caption: none]
IEEE 802.3 and Ethernet Coexistence
There are some similarities and some differences between IEEE 802.3 and
Ethernet LANs. Since both types utilize the same coaxial cable media,
Ethernet nodes may coexist on the same LAN segment with IEEE 802.3
nodes. The most significant differences are in the data packet format
31
and the electrical grounding of the hardware. All HP 3000 LANICs can
transmit either IEEE 802.3 or Ethernet-type packets.
Medium Attachment Unit (MAU)
The Medium Attachment Unit (MAU) provides the physical and electrical
connection to the LAN wiring. It receives signals from, and sends
signals to the cable, and detects collisions resulting from two nodes
starting to transmit simultaneously. The MAU also provides electrical
isolation from the coaxial cable and performs several other functions to
ensure network reliability. For example, if a MAU fails by continuously
transmitting, a circuit will detect the failure and shut down the MAU.
The LAN/3000 Link can be connected to thin coaxial cable (ThinMAU),
thick coaxial cable (ThickMAU), or unshielded twisted-pair wiring
(EtherTwist MAU). A ThinMAU is provided with the LAN/3000 Link; the
other MAUs are ordered separately. The ThinMAU is powered by the LANIC.
Note: The specific MAU and cabling supplied with the LAN/3000 Link
differs, depending on the specific HP 3000 system. Please see the
ordering instructions for more details.
Software Components
The LAN/3000 Link includes software corresponding to layers 2 through 4
of the Open Systems Interconnection (OSI) Reference Model (see
Figure 3). It also includes node management and network management agent
software (SNMP).
The Data Link Layer, corresponding to OSI layer 2, consists of the
IEEE 802.2 and 802.3 protocols. The 802.3 implementation supports
Carrier Sense Multiple Access/Collision Detection (CSMA/CD), which gives
every node on the coaxial cable equal access to the network. A sending
node monitors the network to ensure that no other node is transmitting
before it attempts transmission. If, while transmitting, the sending
node detects a collision, the sending node initiates a jam signal and
waits before retransmitting. Transmission consists of sending addressed
frames of data to the wiring at a signaling rate of 10 megabits/s. The
802.2 implementation supports
[Figure 3 (LAN/9000 Link Software Components) Caption: none]
Logical Link Control (LLC). Both the IEEE 802.2 and the Ethernet service
are Type 1 (unacknowledged datagrams).
The Network Layer, corresponding to OSI layer 3, is based on the ARPA
Internet Protocol (IP). IP provides packet fragmentation/ reassembly and
internetting capability.
The Transport Layer, corresponding to OSI layer 4, is based on the
ARPA Transmission Control Protocol (TCP) and User Datagram Protocol
(UDP).
TCP provides end-to-end reliable, connection-oriented services over
IP with flow control and multiplexing. TCP also has mechanisms for
detecting duplicate, lost, or out-of-sequence packets.
UDP provides an unacknowledged connection-less delivery service over IP.
The LAN/3000 Link provides two application programmatic interfaces
(APIs) to the network transport, Berkeley (BSD) sockets and HP's Network
Inter-Proccess Communication (NetIPC). Both APIs support the rapid
exchange of data using peer-to-peer communications between processes.
32
The processes may be on a single system or on different systems on the
network.
BSD sockets provides a C language interface to TCP and UDP. BSD
sockets is available on HP 1000s, 9000s, and PCs and on a wide range of
computers from other vendors.
BSD sockets is part of the MPE/iX FOS beginning with release 4.0 and
is supported over the LAN/3000 Link. The following sockets calls are
supported:
- accept()
- bind()
- close()
- connect()
- fcntl()
- gethostby xxxx
- getnetby xxxx
- getpeername()
- getprotoby xxxx
- getservby xxxx
- getsockname()
- listen()
- recv()
- recvfrom()
- select()
- send()
- sendto()
- shutdown()
- socket()
- socketpair()
Additional sockets calls are planned for later releases.
NetIPC is a set of 18 programmatic calls, appropriate for
implementing efficient distributed applications over TCP only. NetIPC
supports communications to various HP systems, including the HP 1000,
3000, and 9000 computer systems, as well as HP PC networking.
Applications written to NetIPC can also interoperate with other
applications written to BSD sockets.
Node management software is included in the LAN/3000 Link and
provides a user interface for configuration, tracing, and logging. An
on-line user configurator supports easy initial configuration and
reconfiguration of the LAN/3000 Link software without bringing down the
HP 3000. The node management software also delivers flexible event
logging and the ability to selectively trace several levels of network
software. Also included is NetTool, a set of tools to monitor, analyze,
and diagnose the network transport software.
On-line diagnostics provide the ability to test the system's LANIC,
AUI cable, and MAU, as well as send test frames to and receive test
responses from other nodes.
The LAN/3000 Link also includes a network management agent. The agent
supports the Simple Network Management Protocol (SNMP) and collects
information regarding the state of the link and transport. This
information is used and displayed by remote management stations, such as
the HP OpenView Network Node Manager (see related products below).
33
Standards
The protocols underlying the LAN/3000 Link software closely adhere to
the following standards:
RFC 768 UDP
RFC 791 IP
RFC 792 ICMP
RFC 793 TCP
RFC 826 ARP
RFC 919 IP Broadcast
Datagrams
RFC 922 IP Broadcast
Datagrams
with Subnets
RFC 950 IP Subnet
Extension
RFC 1155 Management
Information
(SNMP)
RFC 1157 SNMP
RFC 1213 MIB II
(SNMP)
Support for Networking Services
The LAN/3000 Link supports the multivendor ARPA network services and
HP's proprietary NS network services The products provide interactive
and programmatic facilities, such as virtual terminal access, file
transfer, and remote database, file, and peripheral access. (See related
products below.)
Network Capacity and Performance
Although the signaling rate of the line may be 10 megabits/s, the
throughput achieved at a node may be lower. This is primarily due to the
overhead of the software providing network services and the user's
applications programs. Among the factors affecting user throughput are
the type of software being used, the main memory and speed of each
processor (and its peripherals) involved in the transfer and the load on
each system from non-network applications.
Because of the number and complexity of these factors, it is
difficult to make useful generalizations about the performance or
capacity of the network in a particular application. Hewlett-Packard
network specialists are available to consult in network design. They
have data on the system and network parameters that affect network
operation. With this information and an accurate understanding of the
target environment, they can assist in designing an effective network.
Installation and Configuration Policy
The customer is responsible for loading the LAN/3000 Link software onto
the system. HP will install the LANIC card and perform minimum
configuration of the LAN/3000 Link to verify minimum product
functionality. This activity is included in the product purchase price.
Customer Responsibility
34
Prior to having HP personnel on-site to verify the installation and
perform minimum configuration of LAN/3000 Link, the customer is
responsible for the following:
o Installing the appropriate wiring. For thin coaxial cable, this
includes terminators, BNC "T" connectors, taps, and (where necessary)
the MAUs and the routing of the AUI cable from the MAU to the LANIC.
o Complying with all applicable building codes in the installation of
the LAN cabling and components.
o Obtaining a valid IP address prior to the configuration of the
LAN/3000 Link.
o Providing HP with the information necessary to complete the Network
Implementation and Support Plan (NISP) including:
- System configurations.
- Logical network map identifying relevant traffic flow.
- Physical network map identifying relevant network hardware
components.
o Updating the HP 3000 system to the proper release level and installing
the LAN/3000 Link software using AUTOINST. Refer to the HP 3000 MPE/iX
Installation and Update Manual (36123-90001).
o Verifying that all of the necessary software modules have been
successfully installed by AUTOINST and are at the correct version
levels using the NMMAINT.PUB.SYS utility.
o Performing full system backups (as necessary) and ensuring that the
HP 3000 system and personnel with HP 3000 system management experience
and LAN management experience are available when HP is on-site to
complete the installation and minimum configuration of the LAN/3000
Link.
After HP has completed the minimum configuration of the LAN/3000 Link,
the customer is also responsible for completing the configuration in
order to fully integrate the LAN/3000 Link into the existing customer
network.
HP Responsibility
Following the installation of the LAN/3000 Link software, HP is
responsible for the following:
o Installing and verifying the operation of the LANIC card.
o Confirming that all of the necessary software modules have been
installed and are at the correct version level.
o Connecting the LANIC to the customer's MAU (only if the MAU is
accessible).
o Configuring the LAN/3000 Link product to the minimum default
configuration necessary to verify software and hardware functionality.
This default configuration includes configuring the link and network
interface in the network configuration file (NMCONFIG) using the NMMGR
Utility.
o Cross validating the network configuration against the system I/O
configuration.
o Verifying that with the minimum configuration, the LAN/3000 Link
product accesses the customer's MAU (if connected), after the product
is started by the NETCONTROL command.
These steps complete HP's portion of the installation and minimum
configuration of the LAN/3000 Link.
35
Additional Implementation Assistance
For implementation needs that go beyond installation, the customer can
either provide self-support or can purchase additional services from HP.
These services include Network Startup and HP ConsultLine. In addition,
the customer can also purchase service from HP on a time-and-materials
basis.
Network Startup includes implementation scheduling and coordination
assistance, network configuration and verification testing, and network
documentation.
Ordering Information
HP Precision Bus (HP-PB) systems
All HP 3000 Series 9x7LX and 9x7 systems come with a HP-PB
multi-function I/O card, which includes a built-in 802.3 LANIC and
ThinLAN MAU. All HP 3000 Series 990 and 992 systems come with a HP-PB
LAN/Console card, which also includes a built-in 802.3 LANIC and ThinLAN
MAU. These integrated LANICs support terminal, printer, and X.25
communications, all of which are provided by the Datacommunications and
Terminal Controller DTC/3000 product. For system-to-system
communications via a LAN, the customer may either use the the 802.3
LANIC supplied with the system or order a second HP-PB 802.3 LANIC card.
The LANIC supplied with the system should be sufficient to meet the
performance requirements of both DTC and system-to-system LAN
communications. There are circumstances, however, where a second HP-PB
LANIC should be considered. If the system-to-system traffic is high, the
customer may want the additional performance of a second HP-PB LANIC
card. Another possibility is that the customer wants to put DTC traffic
and LAN traffic on separate wiring.
Customers who use the 802.3 LANIC supplied with the system only need
to order the software component of the LAN/3000 Link (the network
transport and the device driver). Customers who want a second HP-PB
card, must also order the appropriate hardware option. MPE/iX release
4.0 or later is required to use a second HP-PB LANIC card.
The HP-PB 802.3 LANIC supplied with the system, and the optional
second HP-PB LANIC, both come with a ThinLAN MAU. The LANIC cards also
include an Attachment Unit Interface (AUI) port, for customers who want
to connect to a LAN using either a ThickMAU or an EtherTwist MAU. These
MAUs must be ordered separately (see below).
Channel I/O (CIO) Bus Systems
All HP 3000 Series 900 systems with the CIO bus include a CIO 802.3
LANIC card, a ThinLAN MAU, and a ThickLAN MAU. The Series 960 and 980
systems require a second LANIC card for system-to-system communications
via a LAN; for all other CIO systems a second card is optional. As
described above, however, there are circumstances where a second LANIC
should be considered.
Customers who use the 802.3 LANIC supplied with the system only need
to order the software component of the LAN/3000 Link (the network
transport and the device driver). Customers who want a second CIO LANIC
card, or who require a second card (Series 960 & 980), must also order
the appropriate hardware option.
The CIO 802.3 LANIC card supplied with the system comes with a
ThinLAN MAU and a ThickLAN MAU. The second CIO 802.3 LANIC card comes
36
with a ThinLAN MAU only. The LANIC cards also include an Attachment Unit
Interface (AUI) port, for customers who want to connect to a LAN using
either a ThickMAU or an EtherTwist MAU. These MAUs must be ordered
separately (see below)
36923A ThinLAN 3000/XL Link
Hardware Options
(see instructions above; may select one option)
001 802.3 CIO LANIC card. For Series 920, 922, 922LX, 922RX, 925,
925LX, 932, 935, 948, 949, 950, 955, 958, 960, 980.
002 802.3 HP-PB LANIC card (single-high). For Series 9x7LX, 9x7, 990,
992.
Processor Options
(see instructions above; may select one option)
310 For Tier 1 SPUs,
one RTU/sublicense
315 For Tier 2 SPUs,
one RTU/sublicense
320 For Tier 3 SPUs,
one RTU/sublicense
330 For Tier 4 SPUs,
one RTU/sublicense
335 For Tier 5 SPUs,
one RTU/sublicense
340 For Tier 6 SPUs,
one RTU/sublicense
350 For Tier 7 SPUs,
one RTU/sublicense
Upgrade Credit Options
Previous purchase of the LAN/3000 Link is required. In order to receive
the upgrade credit, customers must order both the upgrade credit option
which pertains to their current processor and the new processor option
on the same order.
0CD Upgrade Credit for Option 310
0GJ Upgrade Credit for Option 315
0CE Upgrade Credit for Option 320
0CF Upgrade Credit for Option 330
0GL Upgrade Credit for Option 335
0GM Upgrade Credit for Option 340
Alternate MAUs
28685B EtherTwist MAU
30241A ThickMAU
Support Products
36923A+S00 Software Material Subscription (SMS) for LAN/3000 Link
36923A+W00 Extended SMS for LAN/3000 Link
37
Response Center Support and Account Management Support customers must
also order Data Communications Category Support B, if it has not already
been purchased.
Customers with hardware support agreements must add the appropriate
level of coverage (SMMC or BMMC) for this link product to their support
agreement.
For quick implementation of your network, a simplified service
interface, verified network operation, and assured ongoing
supportability, please refer to the HP Network Startup data sheet in
this guide.
Documentation
Included with LAN/3000 Link
36922-61023 HP 3000/XL Network Planning and Configuration Guide
36922-61003 NS3000/XL NMMGR Screens Reference Manual
36922-61005 NS3000/XL Operations and Maintenance Reference Manual
36922-61029 HP SNMP/XL User's Guide
36923-61000 NS3000/XL Error Messages Reference Manual
36920-61005 NS3000/XL Programmer's Reference Manual
Included with HP-PB LANIC hardware (option 002):
28640-90001 LAN Hardware Installation
28640-96006 LAN Hardware Installation Quick Start
Related Documentation
36920-61000 Using NS3000/XL Network Services
32650-90363 Berkeley Sockets/iX User's Guide
Related Products
HP 2344A, 2347A, 2348A, 36955A, 36956A, 36957A, D2355A
ARPA Services/XL
HP B1009A, B1024A
HP OpenView Network Node Manager
HP 36920A
NS3000/XL Network Services
Coaxial Cable and LAN Accessories
A complete line of local area network products, including coaxial cable,
installation tools, and connector products is available from
Hewlett-Packard; refer to the current Computer Users Catalog. For cable
planning information, refer to the LAN Cable and Accessories
Installation Manual (P/N 5955-7680), available from your HP Sales
Representative.
From HP Networking Communications Specification Guide,
5091-3821E, 9205, p 259
Associated files: la3821o9.plt, la3821o9.gal, la3821p1.plt,
la3821p1.gal, la3821p2.plt, la3821p2.gal, a3821259.doc
ThinLAN 3000/XL Link Technical Data