HP 3000 Manuals HP 3000 Manuals
Network Design Questions
Ask yourself the following questions to make sure your design adheres to
the considerations mentioned above:
1. Are all of the nodes in the network within roughly 550 meters of
each other?
If so, consider connecting them with ThinLAN 3000/iX links. The
maximum cable length for segments of ThinLAN 3000/iX cable is 185
meters, with a maximum of three segments connected by repeaters.
2. Are all of the nodes in the network within roughly 1,500 meters of
each other?
If so, consider connecting them with ThickLAN (thick coaxial
cable). The maximum cable length for each segment of ThickLAN
coaxial cable is 500 meters, with a maximum of three segments
connected by repeaters.
3. Are all of the nodes in the network either 9x7 systems or
Corporate Business Systems and are all nodes located within 2
kilometers of each other?
If so, consider using FDDI/iX links. The maximum cable length for
each segment is 2 kilometers with a maximum network length of up
to 200 kilometers.
4. Are nodes located at remote sites? (For example, in different
buildings in the same city, or in different cities?)
If so, consider installing an X.25 network or a point-to-point
network using dial links or leased lines. Choose leased lines if
you have a critical need for clear transmission or if the volume
of data to be transmitted is relatively large.
5. Is the set of nodes you wish to connect composed of some nodes
that are in close proximity to one another (for example, in the
same building) and other nodes that are geographically distanced
(for example, in different buildings or different cities)?
If so, you may wish to use EtherTwist, ThinLAN 3000/iX, FDDI/iX,
or Token Ring 3000/iX networks for nodes that are located near one
another and point-to-point or X.25 links for nodes in different
buildings or cities.
6. Do you need to connect personal computers to the network?
One or more personal computers can be connected to one or more HP
3000s using EtherTwist, ThinLAN 3000/XL or Token Ring 3000/iX
links.
7. Will HP 9000s or other minicomputers need to be part of the
network?
If so, consider ThinLAN 3000/iX (or its ThickLAN option), Token
Ring 3000/iX, FDDI/iX, or X.25/iX System Access.
8. Do you need access to nodes on public or private X.25 networks?
If so, consider using DTC/X.25 iX Network Links.
9. Is a subset of nodes either geographically or organizationally
distanced from another subset of nodes?
If so, you may wish to establish a network boundary between them
in order to make them two separate networks joined by a full
gateway or router. Alternatively, you may want to use subnets to
divide one network into two or more physically distinct
subnetworks.
10. If you have decided you need a LAN, FDDI, or token ring network,
do you need to connect any nodes on it with nodes that are part of
another LAN, token ring, or FDDI network?
If so, one of the nodes must be a gateway half which connects to
another gateway half that is a node on the remote network.
Alternatively, you might choose to use a third-party router.
11. If you must use a gateway half, is the partner-gateway half in the
same building or further away?
If the two gateway halves are in the same building, you can use a
direct connect link between them. If the two gateway halves are
further away, you will need to use a dial link.