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Terminates Network Services subsystem. Syntax | |
NSCONTROL STOP[=service[,service]...] |
Parameters | |
- STOP=services
Terminates the Network Services subsystem. STOP
executes a "graceful" shutdown of Network Services.
Existing users of the service can continue until they complete their
NS activity, but new users are prevented from using the services.
The optional service list (services) allows you to select which
of the services are disabled for local or remote use. When all Network
Services are stopped, the DSDAD
process will terminate. Default (if the service list is omitted): terminates all services
for both local and remote use. The services list is the same as for the START
function, except that the specified services are stopped, not started. Specifying the following services prevents users on remote
nodes from using resources on the local node: - LOOPBACK
Prevents remote users from using the loopback diagnostic
server on the local node. - NFT
Prevents remote users from transferring files to
or from the local node using the DSCOPY command
and intrinsic. - NSSTAT
Prevents remote users from using the NSSTATUS
intrinsic to retrieve network services information from the local
node. - RFA
Prevents remote users from accessing files on the
local node. - RPM
Prevents remote users from creating and killing
processes on the local node using the Remote Process Management
service. - VT
Prevents remote users from logging onto the local
node using the REMOTE HELLO command. - VTR
Prevents remote users from accessing local terminals
using the Reverse VT service. - VTA
Prevents remote users who are running the Virtual
Terminal service over TCP implementations which only support the
ARPA standard stream mode flow control mechanisms to log onto the
local node.
Specifying the following services prevents users on the local
node from using resources on remote nodes: - NFTL
Prevents local users from transferring files to
or from remote nodes using the DSCOPY command
and intrinsics. - NSSTATL
Prevents local users from using the NSSTATUS
intrinsic to retrieve network services information from the local
and remote nodes. - RFAL
Prevents local users from opening and accessing
files and databases on remote nodes using the RFA
and RDBA services. - RPML
Prevents local users from creating and killing processes
on the local and remote nodes using the RPM
service. - VTL
Prevents local users from logging onto remote nodes
using the REMOTE HELLO command. - VTRL
Prevents local users from accessing terminals on
remote nodes using the Reverse VT
service.
Discussion | |
NSCONTROL STOP is the normal
way to shut down the Network Services. It allows existing users
to continue using the services until they finish their tasks, but
prevents any new users from using the services. The ABORT function,
on the other hand, immediately terminates all the services and all
the server processes. Anyone using a service will find their task
(DSCOPY, for example) immediately
terminated. See the discussion of NSCONTROL ABORT. Example 1 | |
Example 1 shows NSCONTROL STOP
without the service list. All Network Services are stopped. Any
active servers are allowed to continue until finished with the current
task, at which point they are terminated. No new service requests
are accepted. When all the servers and services are stopped, the
DSDAD process terminates. In the
example, an NSCONTROL ABORT command is issued
after the NSCONTROL STOP command to make sure
all Network Services activity is stopped. :NSCONTROL STOP {users and servers allowed to finish}
:NSCONTROL ABORT {terminates all network services activity}
:NETCONTROL STOP {terminates all network transport activity} |
Example 2 | |
The NSCONTROL STOP=VT,VTA,VTR
command shown in the following example stops the VT,
VTA, and Reverse VT
services. This prevents remote users from logging on to the local
node using REMOTE HELLO and from
opening local terminals using Reverse VT.
If there are any other active Network Services, they remain available. :NSCONTROL STOP=VT,VTA,VTR |
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