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PDP-10 Archives
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BB-BT99T-BB_1990
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10,7/networ/networ.hlp
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NETWORK Command
Function
The NETWORK command prints information about the nodes in an
ANF-10 and/or DECnet-10 network environment. Your terminal must
be attached to one of the nodes in the network to use this
command. You can use the NETWORK command to obtain information
about the other nodes in either type of network, and about the
device configuration of each node in the ANF-10 network.
You can specify the node-name or node-number in the ANF-10
network, or just node-name in the DECnet-10 network, to limit the
output to specific nodes. You can use switches to change the
output format.
NETWORK reads your SWITCH.INI file and accepts indirect commands.
The indirect command files should be formatted as follows:
node-list/switch/switch...
For more information about indirect command files, see the
COMPILE-class commands help file COMCMD.
Formats
NETWORK node-list/switch
Where: node-list is the node-names or node-numbers (ANF-10),
or just node-names (DECnet-10), of nodes for which you
want information. If you do not specify the node-list,
information is output for every node in the network.
The node-names or node-numbers (ANF-10), or just
node-names (DECnet-10) are separated by commas.
You can use the wildcard construction in the command string. The
node name, or any part of the node name, can be replaced by * or
? to represent groups of nodes. For more information about
wildcards, see the help file WLDCRD.
The switches to NETWORK allow you to specify:
o The format of the output.
o The configurations that you want to examine.
NOTE
You use switches to select a node with or without a
specific attribute. Use the proper switch, or prefix
the switch with NO. If you do not use the switch, the
selection of a node does not depend upon that
attribute. If you do not specify a node, the default
output is /BRIEF.
The command line takes the format specified below:
NETWORK node-name,
node-number,.../switch/switch...
You can repeat node names, but not switches.
The switches to the NETWORK command follow.
Output Control Switches
Switch Function
/ANF10 Forces output of ANF-10 information.
/BRIEF Suppresses the output of a list of devices for
each node. This is the default if you do not
specify a node-list in the command string.
/COST Controls the listing of the physical link "cost"
associated with the /TOPOLOGY switch.
/DECNET Forces output of DECnet-10 information.
/ERROR Prints all error messages. This is the default.
/FAST Prints only the name and number of the nodes. If
you also specify /NOBRIEF, the configuration
information is printed.
/HEADER Prints header information. This is the default
action.
/HELP Prints a description of the NETWORK command.
/LAT Prints LAT terminal server information.
/NOANF10 Suppresses output of ANF-10 information.
/NOBRIEF Prints a list of the devices on each node. This
is the default if you specify a node-list.
/NOCOST Suppresses the listing of the physical link "cost"
associated with the /TOPOLOGY switch.
/NODECNET Suppresses output of DECnet-10 information.
/NOERROR Suppresses the output of error messages.
/NOFAST Suppresses printing the name and number of the
nodes. If you also specify /NOBRIEF, the
configuration information is suppressed.
/NOHEADER Suppresses output of header information.
/NOLAT Suppresses LAT terminal server information.
/NOSILENCE Prints all information. This is the default.
/NOSORT Suppresses sorting of the nodes according to node
number.
/NOTOPOLOGY Suppresses printing of the topology of the
network.
/SILENCE Prints only error messages.
/SORT Sorts the nodes according to node number.
/TOPOLOGY Prints the topology of the network as a node name
and number followed by its neighbors' numbers.
Each neighbor has a physical link "cost" following
it in parentheses unless you also include the
/NOCOST switch.
ANF-10 Node Selection Switches
Switch Function
/CDP Prints only nodes that have card-punch devices.
/CDR Prints only nodes that have card readers.
/DTA Prints only nodes that have DECtape units.
/LPT Prints only nodes that have line printers.
/MCR Prints only nodes that have command interpreters
(monitors). MCR signifies that the node is a host
system.
/MTA Prints only nodes that have magnetic tape units.
/NOCDP Prints only nodes that do not have card-punch
devices.
/NOCDR Prints only nodes that do not have card readers.
/NODTA Prints only nodes that do not have DECtape units.
/NOLPT Prints only nodes that do not have line printers.
/NOMCR Prints only nodes that do not have command
interpreters.
/NOMTA Prints only nodes that do not have magnetic tape
units.
/NOPLT Prints only nodes that do not have plotters.
/NOPTP Prints only nodes that do not have paper tape
punch units.
/NOPTR Prints only nodes that do not have paper tape
readers.
/NORDA Prints only nodes that do not have RDX devices.
RDX devices control lines from high-speed input
(block-mode) terminals.
/NOTSK Prints only nodes that do not have TSK: devices.
/NOTTY Prints only nodes that do not support terminals.
/TYPE:DNxxx Prints only nodes of the specified type. This
does not output host nodes. However, if you use
/TYPE: with no value, the host nodes are printed.
/PLT Prints only nodes that have plotters.
/PTP Prints only nodes that have paper tape punch
units.
/PTR Prints only nodes that have paper-tape readers.
/RDA Prints only nodes that have RDX devices. RDX
devices control lines from high-speed input
(block-mode) terminals.
/TSK Prints only nodes that have TSK: devices.
/TTY Prints only nodes that support terminals.
DECnet-10 Node Selection Switches
Switch Function
/LINKS Prints only nodes that have one or more open
logical links.
/NOLINKS Prints only nodes that do not have one or more
open logical links.
/NOUNREACHABLE Suppresses listing of all known DECnet nodes.
/UNREACHABLE Lists all known DECnet nodes.
Network Topology
The topology of a network is determined by the interconnection of
nodes in a network. Nodes can be adjacent to each other
connected by a physical link. They can also be connected with
intermediate nodes. These connections, with associated costs,
determine the routes (paths) a message takes from one node to
another. The costs are arbitrary values given to each physical
connection of the network. The cost of a given route is
determined by the sum of the costs of the physical connections
along that route. In cases where multiple routes exist between
nodes, the route with the lowest cost is taken. In the ANF-10
network, this information is available when you use the /TOPOLOGY
switch.
In the DECnet network, the /TOPOLOGY switch displays the
information available for DECnet nodes. The first two items of
information are the node name and number, followed by DECnet
routing information for that node. If the node is unreachable,
then this information is placed in the output line:
"Unreachable." The remaining information columns are left blank
to indicate that information is not available. If the node is
reachable, then the column shows the circuit name for the initial
routing of a message to that node.
The following columns show cost and number of hops, analogous to
the ANF-10 network topology. The cost for DECnet is set through
network management functions on a per physical-connection basis.
If you ever form a logical link between your node and the
destination node, information is available for the count of open
logical links and the round-trip delay time in milli-seconds.
Otherwise, this information is not available, and the information
fields are left blank. Example 4 shows the output from the use
of the /TOPOLOGY switch for both ANF-10 and DECnet-10 network
environments.
Associated Messages
The output from the NETWORK command is in one of the following
formats.
When you do not specify a node-list:
For ANF-10:
node-name (node-number) system-name system-generation-date
For DECnet-10:
Node list (node-name)
When you specify a node-list:
For ANF-10:
node-name (node-number) system-name system-generation-date
device[number-of-devices] device[number-of-devices]
device[number-of-devices]...
For DECnet-10:
same as when you don't specify node names.
Characteristics
Runs the NETWORK program.
Does not require that you be logged in.
Examples
1. The following example shows the NETWORK command and output
when you omit the node-list. There are 17 nodes in the
ANF-10 network; five are shown in this example. There are
183 reachable nodes in the DECnet network; 14 are shown in
this example.
.NETWORK<RET>
[ANF10 network: connected to SPIRIT (30), located at
KL1026(26), 17 nodes]
Node CTCH22 (22) DN82 V23(174) dd-mmm-yy
Node KL1026 (26) RC117B KL #1026/1042 dd-mmm-yy
Node NEXT (27) DN87 V23(173) dd-mmm-yy
Node SPIRIT (30) DN87 V23(174) dd-mmm-yy
Node NOVA (31) DN87S V23(174) dd-mmm-yy
[DECnet network: local node KL1026, 183 reachable nodes in
area 7]
ABLE ADAM AJAX ALGOL ALIEN ALPHA ALPINE
BLUE CACHE CADVAX CAR CASTOR CDR CHAOS
2. The following example shows the NETWORK command when the
node-list is specified. Node-number 33 is valid; node 76 is
invalid.
.NETWORK 33,76<RET>
[ANF10 network: connected to NOVA(31), located at KL1026(26),
15 nodes]
Node DWARF (33) DN87S V23(174) 28-Sep-82
TSK[2] TTY[64]
%NWKNNN Node 76 not in Network
.
3. The following example shows the use of NETWORK with the
/NOTSK switch.
.NETWORK/NOTSK<RET>
[ANF10 network: connected to NOVA(31), located at KL1026(26),
15 nodes]
Node SOFDCP (75) DN82 V22E/52A
Node WOBBLE (143) DN81 V22E/52A
[DECnet network: local node KL1026, 182 reachable nodes in
area 7]
ABACUS ABLE ADAM AJAX ALGOL ALIEN ALPHA ALPINE
ANIMAL ARK BAXTER BERGIL BISON BLUE CACHE CADVAX
CAR CASTOR CDR CHAOS
4. The following example shows the use of the NETWORK command
with the /TOPOLOGY switch for both ANF-10 and DECnet
networks. The connected node (the node running your job) is
KL1026. KL1026 has a direct line to node ENCORE(32), node
NOVA(31), node JINX(34), node DWARF(33), and node NEXT(27).
Each of these lines costs 10. Therefore, they are equally
acceptable links. Note that node NEXT(27) has a direct line
to node KL1026(26), but this line costs 62, and is therefore
less acceptable than the line which connects node KL1026 to
node NEXT.
.NETWORK/TOPOLOGY<RET>
[ANF10 network: local node KL1026(26), 17 nodes]
Node KL1026 (26) 32(10) 34(10) 33(10) 27(10)
Node CTCH22 (22) 76(8)
Node KS4101 (76) 22(10) 27(10)
Node SOFDCP (75) 71(8) 6(8)
Node TWINKY (71) 75(10) 123(10)
Node WIZARD (123) 71(8) 27(8)
Node NEXT (27) 26(62) 123(16) 76(16)
Node DWARF (33) 26(62)
Node ENCORE (32) 26(62)
Node JINX (34) 26(62)
Node NOVA (31) 26(62) 20(8)
The DECnet network /TOPOLOGY switch displays cost and number
of hops between nodes.
[Decnet network: local node KL1026, 183 reachable nodes in
area 7]
Name Number Line Cost Hops L.Links Delay
LARRY (7.221) DTE-0-3 7 3
LYRA (7.236) ETH-0 1 1
.
5. The following example shows the use of the NETWORK command
for a DECnet Ethernet endnode. An Ethernet endnode does not
know DECnet topology information, so the system prints a
summary line containing DECnet information.
.NETWORK/DECNET<RET>
[DECnet network:local node KL1026,
running as an Ethernet endnode]