ATMARP(8) Maintenance Commands ATMARP(8)NAME
atmarp - administer classical IP over ATM connections
SYNOPSIS
atmarp -a
atmarp -c [[atm]number]
atmarp -q ip_addr [qos qos] [sndbuf bytes]
atmarp -s ip_addr [itf.]vpi.vci [qos qos] [sndbuf bytes] [temp] [pub] [null]
atmarp -s ip_addr atm_addr [qos qos] [sndbuf bytes] [temp] [pub] [arpsrv]
atmarp -d ip_addr [arpsrv]
atmarp -V
DESCRIPTION
atmarp is used to maintain the ATMARP table of the ATMARP demon. The table can be listed, new PVC and SVC entries can be added, and exist-
ing entries can be deleted. In addition to that, atmarp is also used to create new IP over ATM interfaces.
Note that the kernel has its own ATMARP table containing only entries for destinations to which a connection exists. The table of atmarpd
can also contain currently unused entries.
OPTIONS -a list the current ATMARP table.
-c create the specified IP interface. If the interface number is omitted, the operating system assigns the next free number and atmarp
prints the resulting interface name (e.g. `atm0') on standard output.
-q sets the QOS and the send buffer size to use as the default for all VCs generated for that IP network (ip_addr must be the address
of the network).
-s set up a PVC or create an SVC entry. The following options are recognized:
qos qos
uses the specified quality of service (see qos(7) for the syntax). UBR at link speed is used by default.
sndbuf bytes
tries to set the send buffer to the specified number of bytes. A system default value is used if sndbuf is not specified.
temp does not mark the entry as permanent, i.e. it will time out and then be removed.
pub publishes the entry (only relevant for ATMARP server). ATMARP requests for entries not marked for publishing yield an
ATMARP_NAK response.
null uses NULL encapsulation instead of LLC/SNAP encapsulation on the PVC. This option is not available for SVCs, because the
LLC/SNAP header is required to identify ATMARP packets. null also implies that the entry is permanent.
arpsrv identifies the entry pointing to the ATMARP server. Note that the node acting as the ATMARP server must have no ATMARP server
entry in its ATMARP table.
-d delete the specified ARP entry. In order to prevent accidental deletion of the ATMARP server entry, the arpsrv flag must be speci-
fied when deleting it.
-V print the version number of atmarp on standard output and exit.
FILES
/var/run/atmarpd.table ATMARP table
AUTHOR
Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>
SEE ALSO atmarpd(8), clip(8), qos(7)Linux April 26, 2000 ATMARP(8)
Check Out this Related Man Page
ATMSIGD(8) Maintenance Commands ATMSIGD(8)NAME
atmsigd - ATM signaling demon
SYNOPSIS
atmsigd [-b] [-c config_file] [-d] [-D dump_dir] [-l logfile] [-m mode] [-n] [-q qos] [-t trace_length] [-u uni_version] [[itf.]vpi.vci
[input output]]
atmsigd -V
DESCRIPTION
atmsigd implements the ATM UNI signaling protocol. Requests to establish, accept, or close ATM SVCs are sent from the kernel (using a com-
parably simple protocol) to the signaling demon, which then performs the dialog with the network.
Note that atmsigd is not able to accept or establish connections until the local ATM address of the interface is configured by ilmid or
manually using atmaddr.
The default signaling VC (interface 0, VPI 0, VCI 5) can be overridden on the command line by specifying a different PVC address.
When overriding the default VC, optionally a pair of named pipes to use for communicating with the user of signaling can be specified. Nor-
mally, the kernel is the user of signaling and atmsigd opens a special socket for communication with it.
If atmsigd is killed, all system calls requiring interaction with it will return with an error and set errno to EUNATCH.
OPTIONS -b Run in background (i.e. in a forked child process) after initializing.
-c config_file
Use the specified configuration file instead of /etc/atmsigd.conf If an option is specified in the configuration file and on the
command line, the command line has priority.
-d Enables (lots of) debugging output. By default, atmsigd is comparably quiet.
-D dump_dir
Specifies the directory to which atmsigd will write status and trace dumps. If -D is not specified, dumps are written to /var/tmp.
-l logfile
Write diagnostic messages to the specified file. The special name syslog is used to send diagnostics to the system logger, stderr is
used to send diagnostics to standard error. If -l is absent, the setting in atmsigd.conf is used. If atmsigd doesn't specify a des-
tination either, messages are written to standard error.
-m mode
Set the mode of operation. The following modes are available: user for the user side (the default), network for the network side
(useful if you have two PCs but no switch), and switch for operation with a signaling relay in a switch.
-n Prints addresses in numeric format only, i.e. no address to name translation is attempted.
-q qos Configures the signaling VC to use the specified quality of service (see qos(7) for the syntax). By default, UBR at link speed is
used on the signaling VC.
-t trace_length
Sets the number of entries that should be kept in the trace buffer. -t 0 disables tracing. If -t is not specified, atmsigd uses a
default of 20 trace entries.
-u uni_version
Sets the signaling mode. The following modes are supported: uni30 for UNI 3.0, uni31 for UNI 3.1, uni31+uni30 for UNI 3.1 with 3.0
compatibility, uni40 for UNI 4.0, and uni40+q.2963.1 for UNI 4.0 with Q.2963.1 peak cell rate renegotiation.
-V Prints the version number of atmsigd on standard output and exits.
FILES
/etc/atmsigd.conf default configuration file
/var/tmp/atmsigd.pid.status.version
default location of status dumps
/var/tmp/atmsigd.pid.trace.version
default location of signaling trace dumps
DEBUGGING
When receiving a SIGUSR1 signal, atmsigd dumps the list of all internal socket descriptors. With SIGUSR2, it dumps the contents of the
trace buffer. If a dump directory was set, dumps are written to files called atmsigd.pid.status.number and atmsigd.pid.trace.number,
respectively, with number starting at zero and being incremented for every dump. If no dump directory is set, dumps are written to standard
error.
Dumps are also generated whenever atmsigd detects a fatal error and terminates. No attempt is made to catch signals like SIGSEGV.
BUGS
The generation of traces is a comparably slow process which may already take several seconds for only 100 trace entries. To generate a
trace dump, atmsigd therefore forks a child process that runs in parallel to the signaling demon.
AUTHOR
Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>
SEE ALSO atmaddr(8), atmsigd.conf(4), ilmid(8), qos(7)Linux April 26, 2000 ATMSIGD(8)