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The X.25 Configuration screen (#48) in Figure 8-2 “NS Configuration Screen” is displayed when you press the [Config Network]
key at the Network Transport Configuration screen (#42) with an
NI type of 3 (X.25). Refer to Chapter 5 “Introductory Screens” for information
on the Network Transport Configuration screen. Figure 8-2 NS Configuration Screen
![[NS Configuration Screen]](img/gfx40.gif)
In the IP address
field, enter the internet protocol (IP) address for the node being
configured. An example of an address is: C 192.191.191 009. The IP subnet mask is optional. If entering one, tab
to the IP subnet mask field and
enter the number in the same format as an IP address. Move to the first Link name
field. Enter a link name to represent the DTC/X.25 Network Access
card for which you are configuring a link. This name must be unique
to both the node and the DTC. It must also be the same as the link
name configured for this card when the Datacommunications and Terminal
Subsystem (DTS) was configured. Enter the node name of the DTC that houses the DTC/X.25
Access card in the first DTC Node Name
field then enter the slot number of the card in the Card Number
field. Enter a link name, DTC node name, and card number for each
link you are configuring. When you are done adding links, press the [Save Data]
key. If the network that this node is on contains ANY internetwork
gateway (either full or half) press the [Neighbor Gateways]
key and proceed to the section in this chapter called "To
Configure Neighbor Gateways." If the network that this node is on contains NO internetwork
gateways or if you have already configured gateways for this system,
press the [Config Directry] key and proceed to
the section in this chapter titled "To Configure X.25 Virtual
Circuits."
- Optional Keys
Press the [List NIs] key to list
the names and types of already configured network interfaces. Press the [Delete NI] key to remove a configured
network interface from the configuration file. Press the [Read Other NI] key to call up
a previously configured Network Interface name.
Fields- Node Name
Display only. - Network Interface (NI) name
Display only. - IP address
IP address is an address of a node on a network.
An IP address has two parts: a network portion and a node portion.
The network portion must be the same
for all nodes on an X.25 network; the node
portion must be unique for all nodes on an
X.25 network. There are two methods of entering an internet protocol (IP)
address within NMMGR: Enter the fully qualified IP address
(for example, Class C, C 192.191.191 009). OR Enter only the network (nnn)
and node (xxx) portions of the IP address as
four positive integers between 0
and 255 separated by periods or
blanks (for example, 15.123.44.98). You need not enter the following items as NMMGR will fill
these in: Leading zeros for the network and node portion of
the IP address.
HP assigns the network portion (initial nine digits) of IP
addresses from ARPA Class C, though your addresses may also be of
Classes A or B. The complete formats are: | Class | A nnn xxx.xxx.xxx | | | B nnn.nnn xxx.xxx | | | C nnn.mmm.mmm xxx | | Where: | nnn = the
network portion of the IP address and xxx
= the node portion of the IP address. |
For Class C, the node portion
of the IP address must be between 001
and 254. If you are adding your NS 3000/iX node to an existing
network, the network portion of each node's IP address
should be the same. You will have to find out what this is, and
use it in the network portion of the IP address of your NS 3000/iX
node. Also, you will need to know the node portions of the IP addresses
of each of the nodes (usually they will be numbered sequentially,
such as 001, 002,
and so on), so that you can specify a unique node portion for the
IP address of your node. If you have a network map, it should provide
a record of such items as the node name and IP address of each node.
If there is no record, and if you want to find out each node's
IP address, you will have to issue the following command (NM capability
required) on each of the nodes: NETCONTROL NET=NIname;STATUS One of the lines of output from this command tells you what
the complete IP address is for that node; the last three digits
are the unique node portion of the class C address. | | | |  | NOTE: To obtain a class B or C IP address, contact Government
Systems, Incorporated (GSI). To obtain an application form, write
GSI at the address below. Allow at least eight working days for
GSI to process an IP address request.| Government Systems, Inc. | | Attn: Network Information Center | | 7990 Boeing Ct. | | Vienna, VA 22183 | | (800) 364-3642 (703) 821-6161 | |
| | | | |
- IP subnet mask
An IP subnet mask is specified in the same format
as an IP address. The 32-bit mask is grouped in octets expressed
as decimal integers and delimited by either a period (.) or a space.
An IP mask is used when configuring subnetworks. The mask identifies
which bits of an IP address will be used to define a subnetwork.
To determine these bits, you first need to estimate how many subnetworks
and nodes per subnetwork you need. See Chapter 2 “Networking Concepts” for details on deriving an IP subnet mask. - Link name
The link name identifies a specific DTC/X.25 Network
Access card to be used for X.25 system-to-system connections. This
link name must be the same as the link name you entered for this
card when you configured your DTCs. You may configure up to 11 links.
(One link must be used for loopback. Loopback will be automatically
configured during the guided screen configuration.) - DTC Node Name
The DTC node name is the fully qualified nodename
(name.domain.organization) of the
DTC that contains the DTC/X.25 Network Access card with the configured
link name. - Card Number
The DTC card number is the number of the DTC/X.25
Network Access card in the associated DTC. If the card is contained
in a DTC 48, the DTC card number can be any number from 1 to 5.
If the card is contained in a DTC 16, the card number must be 2.
To Configure X.25 Virtual Circuits | |
The X.25 Virtual Circuit Configuration screen (#47) in Figure 8-3 “X.25 Virtual Circuit Configuration
Screen” is displayed if you press
the [Config Directry] key from the X.25 Configuration
screen (#48) in Figure 8-2 “NS Configuration Screen”. This
screen lets you configure the network directory. Figure 8-3 X.25 Virtual Circuit Configuration
Screen
![[X.25 Virtual Circuit Configuration Screen]](img/gfx41.gif)
In the Remote node name
field, type in the nodename of each remote X.25 node on your network
in the format nodename.domain.organization.
Also, if you need to be able to perform a loopback DSLINE
command to the local node, then enter the local node's
name here as well. For each node, type the IP address of the node in the
Remote IP address field. To specify that calls can be made to a node, enter its
address key in the Address key
field. Enter the node portion of the remote
node's configured nodename. | | | | | NOTE: An address key called POOL
is already preconfigured for you though it doesn't show
up on the screen. POOL allows the
node being configured to receive any incoming
calls even if the remote system's address is not configured
on this screen. POOL will also
allow you to use NetIPC to programmatically provide an X.25 address
that is not configured on this screen. If you want to delete the
POOL address key, in the last line
of the X.25 Virtual Circuit Configuration screen enter a 3
(for switched VCs) and press the [Go To] key. That
brings you to the X.25 SVC Address Key Paths screen where you can
then remove the default name POOL
by typing over it with spaces and then saving the data. | | | | |
If the address type is a switched virtual circuit complete
steps a through c, but if the address type is a permanent virtual
circuit, skip to step 5. In the Remote X.25 address
field, enter the X.25 address of the remote host for X.25 public
data networks or private networks. Make sure the name of the facility set you are using
is in the Facility set field. You
may either choose the default facility set (STDSFSET)
or enter an alternative. If you are configuring a new facility set,
enter a new name. (To modify facility set parameters, enter a 5
in the last field on the screen and press the [Go To]
key.) In the Security class
field, enter the level of logical security you want to have on this
particular entry. The possible values are IN
(accept calls from the address), IO
(accept calls from and send calls to the address, default), OU
(send calls to the address, incoming calls are rejected), and LK
(block calls to or from the address).
If the address type is a permanent virtual circuit (PVC),
in the Permanent VC number field,
enter the PVC number of the PVC on the remote node. This value cannot
be greater than the number of PVCs for which you are subscribed.
It must be within the PVC range you defined during DTC configuration. After you have finished entering new information for
each remote node, press the [Save Data] key. (Press
the key once for each remote node you are configuring.) If you have completed configuration of X.25, press the
[Validate Netxport] key and proceed to Chapter 10 “Validating Network Transport and
Cross-Validating with SYSGEN” Otherwise, press
the [Prior Screen] key to return to the X.25 Configuration
screen. Fields
- Network directory name
The network directory file that will be updated
by the information entered through this screen. - Remote node name
You must enter the remote node name of each X.25
node into the network directory. Include entries for all remote
nodes and, if you want to be able to perform loopback, the local
node as well. - Remote IP address
Also in the network directory, you must enter the
IP Address of each node whose identity you have entered into the
network directory. For the format of this parameter, see the information
in the "Fields" section under "Configure
X.25 Network." - Address key
The X.25 address key is the name of a remote node
with which your local node will be communicating. Hewlett-Packard
recommends that you make the name be the node portion of the remote
node's name (where its full name is node.domain.organization).
You must configure an X.25 address key for each remote node with
which your node will be communicating. You have a combined maximum
of 1024 X.25 address keys in the SVC and PVC path tables. The X.25
address key name must be eight characters or less and the first
character must be alphabetic. A default address key called POOL
allows any system to access the local system even if the remote
system's address is not configured. POOL
can also be used when level 3 programmatic access (NetIPC) provides
an X.25 address. - Network Interface (NI) name
Display only. - SVC or PVC Parameters
The parameters for assigning either SVCs or PVCs
are described in the following paragraphs. For SVCs- Remote X.25 address
The remote X.25 address is the remote node's
X.25 address. This address is required for SVCs if you have specified
an X.25 address key. This address must be 15 digits or
less. - Facility set
The facility set name is a name for a set of X.25
connection parameters. The parameters are determined by the type
of X.25 network that you are subscribed to. You can configure options
in a facility set so that specified options are available for every
virtual circuit or negotiated for each virtual circuit on a per-call
basis. This facility set will be used when a connection is made
from your node to the specified remote node or from the specified
remote node to your node. A Facility Set is required for SVCs if
you have specified an X.25 Address Key. The facility set name must
be eight characters or less, and the first character must be alphabetic.
You can configure up to 128 facility sets. To modify facility set parameters, enter a 5
in the field at the bottom of the screen and press the [Go To]
key. This will take you to the X.25 User Facility Sets screen. From
this screen you can create new or modify existing user facility
sets. See the NS 3000/iX Screens Reference Manual
for more information. - Security class
The security class is the level of logical security
you want to have when a connection is made to or from the specified
remote node. A Security level is required for SVCs if you have specified
an X.25 Address Key. The possible values are as follows: IO—Both
incoming and outgoing calls are accepted. This is the default value. IN—Only
incoming calls are accepted from this particular remote address.
Outgoing calls will be rejected. OU—Only
outgoing calls are accepted to this particular remote address. Incoming
calls will be rejected. LK—Entry
is locked. No call is accepted, either inbound or outbound. For PVCs
- Permanent VC number
The PVC Number identifies a permanent virtual circuit
(PVC) on the remote node. If you have entered a name in the X.25
Address Key field and are configuring PVCs, then you also have to
enter a value for the PVC Number.
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