01-22-2009
What do you mean by "stop"? Stop services listening to UDP sockets? Block external communication to UDP sockets? Stop users from accessing such ports? Completely eradicate the protocol?
Except for the last one all are possible, but you have to be more specific.
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LEARN ABOUT DEBIAN
udpclo
UDPCLO(1) BP executables UDPCLO(1)
NAME
udpclo - UDP-based BP convergence layer output task
SYNOPSIS
udpclo
DESCRIPTION
udpclo is a background "daemon" task that extracts bundles from the queues of bundles ready for transmission via UDP to remote bundle
protocol agents, encapsulates them in UDP datagrams, and sends those datagrams to the appropriate remote UDP sockets as indicated by the
host names and UDP port numbers (destination induct names) associated with the bundles by the routing daemons that enqueued them.
Note that udpclo is a "promiscuous" CLO daemon, able to transmit bundles to any UDP destination induct. Its duct name is '*' rather than
the induct name of any single UDP destination induct to which it might be dedicated, so scheme configuration directives that cite this
outduct must provide destination induct IDs. For the UDP convergence-layer protocol, destination induct IDs are identical to induct names,
i.e., they are of the form local_hostname[:local_port_nbr].
udpclo is spawned automatically by bpadmin in response to the 's' (START) command that starts operation of the Bundle Protocol, and it is
terminated by bpadmin in response to an 'x' (STOP) command. udpclo can also be spawned and terminated in response to START and STOP
commands that pertain specifically to the UDP convergence layer protocol.
EXIT STATUS
0 udpclo terminated normally, for reasons noted in the ion.log file. If this termination was not commanded, investigate and solve the
problem identified in the log file and use bpadmin to restart udpclo.
1 udpclo terminated abnormally, for reasons noted in the ion.log file. Investigate and solve the problem identified in the log file,
then use bpadmin to restart udpclo.
FILES
No configuration files are needed.
ENVIRONMENT
No environment variables apply.
DIAGNOSTICS
The following diagnostics may be issued to the ion.log log file:
udpclo can't attach to BP.
bpadmin has not yet initialized Bundle Protocol operations.
No memory for UDP buffer in udpclo.
ION system error. Check errtext, correct problem, and restart UDP.
No such udp duct.
No UDP outduct with duct name '*' has been added to the BP database. Use bpadmin to stop the UDP convergence-layer protocol, add the
outduct, and then restart the UDP protocol.
CLO task is already started for this engine.
Redundant initiation of udpclo.
CLO can't open UDP socket
Operating system error. Check errtext, correct problem, and restart udpclo.
CLO write() error on socket
Operating system error. Check errtext, correct problem, and restart udpclo.
Bundle is too big for UDP CLA.
Configuration error: bundles that are too large for UDP transmission (i.e., larger than 65535 bytes) are being enqueued for udpclo.
Change routing.
BUGS
Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>
SEE ALSO
bpadmin(1), bprc(5), udpcli(1)
perl v5.14.2 2012-05-25 UDPCLO(1)