mirror of
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Clean up.
This commit is contained in:
Chris Johns
Amar Takhar
parent
fabe6d020f
commit
bcfdcef840
@ -1,3 +1,7 @@
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.. COMMENT: COPYRIGHT (c) 1988-2008.
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.. COMMENT: On-Line Applications Research Corporation (OAR).
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.. COMMENT: All rights reserved.
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Network Commands
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################
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@ -6,37 +10,38 @@ Introduction
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The RTEMS shell has the following network commands:
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- ``netstats`` - obtain network statistics
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- netstats_ - obtain network statistics
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- ``ifconfig`` - configure a network interface
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- ifconfig_ - configure a network interface
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- ``route`` - show or manipulate the IP routing table
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- route_ - show or manipulate the IP routing table
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- ``ping`` - ping a host or IP address
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- ping_ - ping a host or IP address
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Commands
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========
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This section details the Network Commands available. A
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subsection is dedicated to each of the commands and
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describes the behavior and configuration of that
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This section details the Network Commands available. A subsection is dedicated
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to each of the commands and describes the behavior and configuration of that
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command as well as providing an example usage.
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.. _netstats:
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netstats - obtain network statistics
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------------------------------------
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.. index:: netstats
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**SYNOPSYS:**
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.. code:: c
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.. code:: shell
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netstats \[-Aimfpcut]
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netstats [-Aimfpcut]
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**DESCRIPTION:**
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This command is used to display various types of network statistics. The
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information displayed can be specified using command line arguments in
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various combinations. The arguments are interpreted as follows:
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information displayed can be specified using command line arguments in various
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combinations. The arguments are interpreted as follows:
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*-A*
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print All statistics
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@ -72,11 +77,10 @@ NONE
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**EXAMPLES:**
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The following is an example of how to use ``netstats``:
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The following is an example of using the ``netstats`` command to print the IP
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routing table:
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The following is an example of using the ``netstats``
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command to print the IP routing table:
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.. code:: c
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.. code:: shell
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[/] $ netstats -i
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Destination Gateway/Mask/Hw Flags Refs Use Expire Interface
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@ -86,12 +90,13 @@ command to print the IP routing table:
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192.168.1.51 00:1D:7E:0C:D0:7C UHL 0 840 1202 eth1
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192.168.1.151 00:1C:23:B2:0F:BB UHL 1 23 1219 eth1
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The following is an example of using the ``netstats``
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command to print the MBUF statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the MBUF
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statistics:
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.. code:: shell
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[/] $ netstats -m
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\************ MBUF STATISTICS \************
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************ MBUF STATISTICS ************
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mbufs:2048 clusters: 128 free: 63
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drops: 0 waits: 0 drains: 0
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free:1967 data:79 header:2 socket:0
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@ -99,13 +104,14 @@ command to print the MBUF statistics:
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soname:0 soopts:0 ftable:0 rights:0
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ifaddr:0 control:0 oobdata:0
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The following is an example of using the ``netstats``
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command to print the print the interface statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the
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print the interface statistics:
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.. code:: shell
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[/] $ netstats -f
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\************ INTERFACE STATISTICS \************
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\***** eth1 \*****
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************ INTERFACE STATISTICS ************
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***** eth1 *****
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Ethernet Address: 00:04:9F:00:5B:21
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Address:192.168.1.244 Broadcast Address:192.168.1.255 Net mask:255.255.255.0
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Flags: Up Broadcast Running Active Multicast
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@ -116,40 +122,44 @@ command to print the print the interface statistics:
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Tx Interrupts:867 Deferred:0 Late Collision:0
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Retransmit Limit:0 Underrun:0 Misaligned:0
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The following is an example of using the ``netstats``
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command to print the print IP statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the
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print IP statistics:
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.. code:: shell
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[/] $ netstats -p
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\************ IP Statistics \************
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************ IP Statistics ************
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total packets received 894
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packets rcvd for unreachable dest 13
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datagrams delivered to upper level 881
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total ip packets generated here 871
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The following is an example of using the ``netstats``
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command to print the ICMP statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the ICMP
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statistics:
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.. code:: shell
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[/] $ netstats -c
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\************ ICMP Statistics \************
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************ ICMP Statistics ************
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Type 0 sent 843
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number of responses 843
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Type 8 received 843
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The following is an example of using the ``netstats``
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command to print the UDP statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the UDP
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statistics:
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.. code:: shell
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[/] $ netstats -u
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\************ UDP Statistics \************
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************ UDP Statistics ************
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The following is an example of using the ``netstats``
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command to print the TCP statistics:
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.. code:: c
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The following is an example of using the ``netstats`` command to print the TCP
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statistics:
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.. code:: shell
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[/] $ netstats -t
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\************ TCP Statistics \************
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************ TCP Statistics ************
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connections accepted 1
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connections established 1
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segs where we tried to get rtt 34
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@ -172,13 +182,13 @@ command to print the TCP statistics:
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.. index:: CONFIGURE_SHELL_NO_COMMAND_NETSTATS
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.. index:: CONFIGURE_SHELL_COMMAND_NETSTATS
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This command is included in the default shell command set.
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When building a custom command set, define``CONFIGURE_SHELL_COMMAND_NETSTATS`` to have this
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This command is included in the default shell command set. When building a
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custom command set, define ``CONFIGURE_SHELL_COMMAND_NETSTATS`` to have this
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command included.
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This command can be excluded from the shell command set by
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defining ``CONFIGURE_SHELL_NO_COMMAND_NETSTATS`` when all
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shell commands have been configured.
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This command can be excluded from the shell command set by defining
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``CONFIGURE_SHELL_NO_COMMAND_NETSTATS`` when all shell commands have been
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configured.
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**PROGRAMMING INFORMATION:**
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@ -186,26 +196,29 @@ shell commands have been configured.
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The ``netstats`` is implemented by a C language function
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which has the following prototype:
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.. code:: c
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int rtems_shell_rtems_main_netstats(
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int argc,
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char \**argv
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char **argv
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);
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The configuration structure for the ``netstats`` has the
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following prototype:
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The configuration structure for the ``netstats`` has the following prototype:
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.. code:: c
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extern rtems_shell_cmd_t rtems_shell_NETSTATS_Command;
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.. _ifconfig:
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ifconfig - configure a network interface
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----------------------------------------
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.. index:: ifconfig
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**SYNOPSYS:**
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.. code:: c
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.. code:: shell
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ifconfig
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ifconfig interface
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@ -214,8 +227,8 @@ ifconfig - configure a network interface
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**DESCRIPTION:**
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This command may be used to display information about the
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network interfaces in the system or configure them.
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This command may be used to display information about the network interfaces in
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the system or configure them.
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**EXIT STATUS:**
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@ -223,16 +236,17 @@ This command returns 0 on success and non-zero if an error is encountered.
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**NOTES:**
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Just like its counterpart on GNU/Linux and BSD systems, this command
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is complicated. More example usages would be a welcome submission.
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Just like its counterpart on GNU/Linux and BSD systems, this command is
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complicated. More example usages would be a welcome submission.
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**EXAMPLES:**
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The following is an example of how to use ``ifconfig``:
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.. code:: c
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************ INTERFACE STATISTICS \************
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\***** eth1 \*****
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.. code:: shell
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************ INTERFACE STATISTICS ************
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***** eth1 *****
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Ethernet Address: 00:04:9F:00:5B:21
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Address:192.168.1.244 Broadcast Address:192.168.1.255 Net mask:255.255.255.0
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Flags: Up Broadcast Running Active Multicast
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@ -248,55 +262,59 @@ The following is an example of how to use ``ifconfig``:
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.. index:: CONFIGURE_SHELL_NO_COMMAND_IFCONFIG
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.. index:: CONFIGURE_SHELL_COMMAND_IFCONFIG
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This command is included in the default shell command set.
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When building a custom command set, define``CONFIGURE_SHELL_COMMAND_IFCONFIG`` to have this
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This command is included in the default shell command set. When building a
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custom command set, define ``CONFIGURE_SHELL_COMMAND_IFCONFIG`` to have this
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command included.
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This command can be excluded from the shell command set by
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defining ``CONFIGURE_SHELL_NO_COMMAND_IFCONFIG`` when all
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shell commands have been configured.
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This command can be excluded from the shell command set by defining
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``CONFIGURE_SHELL_NO_COMMAND_IFCONFIG`` when all shell commands have been
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configured.
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**PROGRAMMING INFORMATION:**
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.. index:: rtems_shell_rtems_main_ifconfig
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The ``ifconfig`` is implemented by a C language function
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which has the following prototype:
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The ``ifconfig`` is implemented by a C language function which has the
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following prototype:
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.. code:: c
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int rtems_shell_rtems_main_ifconfig(
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int argc,
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char \**argv
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char **argv
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);
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The configuration structure for the ``ifconfig`` has the
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following prototype:
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The configuration structure for the ``ifconfig`` has the following prototype:
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.. code:: c
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extern rtems_shell_cmd_t rtems_shell_IFCONFIG_Command;
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.. _route:
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route - show or manipulate the ip routing table
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-----------------------------------------------
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.. index:: route
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**SYNOPSYS:**
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.. code:: c
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.. code:: shell
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route \[subcommand] \[args]
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route [subcommand] [args]
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**DESCRIPTION:**
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This command is used to display and manipulate the routing table.
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When invoked with no arguments, the current routing information is
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displayed. When invoked with the subcommands ``add`` or ``del``,
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then additional arguments must be provided to describe the route.
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This command is used to display and manipulate the routing table. When invoked
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with no arguments, the current routing information is displayed. When invoked
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with the subcommands ``add`` or ``del``, then additional arguments must be
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provided to describe the route.
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Command templates include the following:
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.. code:: c
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route \[add|del] -net IP_ADDRESS gw GATEWAY_ADDRESS \[netmask MASK]
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route \[add|del] -host IP_ADDRESS gw GATEWAY_ADDRES \[netmask MASK]
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.. code:: shell
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route [add|del] -net IP_ADDRESS gw GATEWAY_ADDRESS [netmask MASK]
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route [add|del] -host IP_ADDRESS gw GATEWAY_ADDRES [netmask MASK]
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When not provided the netmask defaults to ``255.255.255.0``
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@ -306,13 +324,14 @@ This command returns 0 on success and non-zero if an error is encountered.
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**NOTES:**
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|
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Just like its counterpart on GNU/Linux and BSD systems, this command
|
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is complicated. More example usages would be a welcome submission.
|
||||
Just like its counterpart on GNU/Linux and BSD systems, this command is
|
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complicated. More example usages would be a welcome submission.
|
||||
|
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**EXAMPLES:**
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The following is an example of how to use ``route`` to display,
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add, and delete a new route:
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The following is an example of how to use ``route`` to display, add, and delete
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a new route:
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.. code:: c
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[/] $ route
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@ -322,8 +341,8 @@ add, and delete a new route:
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192.168.1.14 00:A0:C8:1C:EE:28 UHL 1 0 1444 eth1
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192.168.1.51 00:1D:7E:0C:D0:7C UHL 0 10844 1202 eth1
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192.168.1.151 00:1C:23:B2:0F:BB UHL 2 37 1399 eth1
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\[/] $ route add -net 192.168.3.0 gw 192.168.1.14
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\[/] $ route
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[/] $ route add -net 192.168.3.0 gw 192.168.1.14
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[/] $ route
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Destination Gateway/Mask/Hw Flags Refs Use Expire Interface
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default 192.168.1.14 UGS 0 0 0 eth1
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192.168.1.0 255.255.255.0 U 0 0 1 eth1
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@ -331,8 +350,8 @@ add, and delete a new route:
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192.168.1.51 00:1D:7E:0C:D0:7C UHL 0 14937 1202 eth1
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192.168.1.151 00:1C:23:B2:0F:BB UHL 2 96 1399 eth1
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192.168.3.0 192.168.1.14 UGS 0 0 0 eth1
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\[/] $ route del -net 192.168.3.0 gw 192.168.1.14
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\[/] $ route
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[/] $ route del -net 192.168.3.0 gw 192.168.1.14
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[/] $ route
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Destination Gateway/Mask/Hw Flags Refs Use Expire Interface
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default 192.168.1.14 UGS 0 0 0 eth1
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192.168.1.0 255.255.255.0 U 0 0 1 eth1
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@ -345,76 +364,78 @@ add, and delete a new route:
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.. index:: CONFIGURE_SHELL_NO_COMMAND_ROUTE
|
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.. index:: CONFIGURE_SHELL_COMMAND_ROUTE
|
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|
||||
This command is included in the default shell command set.
|
||||
When building a custom command set, define``CONFIGURE_SHELL_COMMAND_ROUTE`` to have this
|
||||
This command is included in the default shell command set. When building a
|
||||
custom command set, define ``CONFIGURE_SHELL_COMMAND_ROUTE`` to have this
|
||||
command included.
|
||||
|
||||
This command can be excluded from the shell command set by
|
||||
defining ``CONFIGURE_SHELL_NO_COMMAND_ROUTE`` when all
|
||||
shell commands have been configured.
|
||||
This command can be excluded from the shell command set by defining
|
||||
``CONFIGURE_SHELL_NO_COMMAND_ROUTE`` when all shell commands have been
|
||||
configured.
|
||||
|
||||
**PROGRAMMING INFORMATION:**
|
||||
|
||||
.. index:: rtems_shell_rtems_main_route
|
||||
|
||||
The ``route`` is implemented by a C language function
|
||||
which has the following prototype:
|
||||
The ``route`` is implemented by a C language function which has the following
|
||||
prototype:
|
||||
|
||||
.. code:: c
|
||||
|
||||
int rtems_shell_rtems_main_route(
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int argc,
|
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char \**argv
|
||||
char **argv
|
||||
);
|
||||
|
||||
The configuration structure for the ``route`` has the
|
||||
following prototype:
|
||||
The configuration structure for the ``route`` has the following prototype:
|
||||
|
||||
.. code:: c
|
||||
|
||||
extern rtems_shell_cmd_t rtems_shell_ROUTE_Command;
|
||||
|
||||
.. _ping:
|
||||
|
||||
ping - ping a host or IP address
|
||||
--------------------------------
|
||||
.. index:: ping
|
||||
|
||||
**SYNOPSYS:**
|
||||
|
||||
.. code:: c
|
||||
.. code:: shell
|
||||
|
||||
ping \[-AaDdfnoQqRrv] \[-c count] \[-G sweepmaxsize] \[-g sweepminsize]
|
||||
\[-h sweepincrsize] \[-i wait] \[-l preload] \[-M mask | time] \[-m ttl]
|
||||
\[-p pattern] \[-S src_addr] \[-s packetsize] \[-t timeout]
|
||||
\[-W waittime] \[-z tos] host
|
||||
ping \[-AaDdfLnoQqRrv] \[-c count] \[-I iface] \[-i wait] \[-l preload]
|
||||
\[-M mask | time] \[-m ttl] \[-p pattern] \[-S src_addr]
|
||||
\[-s packetsize] \[-T ttl] \[-t timeout] \[-W waittime]
|
||||
\[-z tos] mcast-group
|
||||
ping [-AaDdfnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]
|
||||
[-h sweepincrsize] [-i wait] [-l preload] [-M mask | time] [-m ttl]
|
||||
[-p pattern] [-S src_addr] [-s packetsize] [-t timeout]
|
||||
[-W waittime] [-z tos] host
|
||||
ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]
|
||||
[-M mask | time] [-m ttl] [-p pattern] [-S src_addr]
|
||||
[-s packetsize] [-T ttl] [-t timeout] [-W waittime]
|
||||
[-z tos] mcast-group
|
||||
|
||||
**DESCRIPTION:**
|
||||
|
||||
The ping utility uses the ICMP protocol's mandatory ECHO_REQUEST
|
||||
datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway.
|
||||
ECHO_REQUEST datagrams ("pings") have an IP and ICMP header,
|
||||
followed by a "struct timeval" and then an arbitrary number of
|
||||
"pad" bytes used to fill out the packet. The options are as
|
||||
follows:
|
||||
The ping utility uses the ICMP protocol's mandatory ECHO_REQUEST datagram to
|
||||
elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams
|
||||
("pings") have an IP and ICMP header, followed by a "struct timeval" and then
|
||||
an arbitrary number of "pad" bytes used to fill out the packet. The options
|
||||
are as follows:
|
||||
|
||||
*-A*
|
||||
Audible. Output a bell (ASCII 0x07) character when no packet is
|
||||
received before the next packet is transmitted. To cater for
|
||||
round-trip times that are longer than the interval between
|
||||
transmissions, further missing packets cause a bell only if the
|
||||
maximum number of unreceived packets has increased.
|
||||
Audible. Output a bell (ASCII 0x07) character when no packet is received
|
||||
before the next packet is transmitted. To cater for round-trip times that
|
||||
are longer than the interval between transmissions, further missing packets
|
||||
cause a bell only if the maximum number of unreceived packets has
|
||||
increased.
|
||||
|
||||
*-a*
|
||||
Audible. Include a bell (ASCII 0x07) character in the output when any
|
||||
packet is received. This option is ignored if other format options
|
||||
are present.
|
||||
packet is received. This option is ignored if other format options are
|
||||
present.
|
||||
|
||||
*-c count*
|
||||
Stop after sending (and receiving) count ECHO_RESPONSE packets. If
|
||||
this option is not specified, ping will operate until interrupted. If
|
||||
this option is specified in conjunction with ping sweeps, each sweep
|
||||
will consist of count packets.
|
||||
Stop after sending (and receiving) count ECHO_RESPONSE packets. If this
|
||||
option is not specified, ping will operate until interrupted. If this
|
||||
option is specified in conjunction with ping sweeps, each sweep will
|
||||
consist of count packets.
|
||||
|
||||
*-D*
|
||||
Set the Don't Fragment bit.
|
||||
@ -423,126 +444,123 @@ follows:
|
||||
Set the SO_DEBUG option on the socket being used.
|
||||
|
||||
*-f*
|
||||
Flood ping. Outputs packets as fast as they come back or one
|
||||
hundred times per second, whichever is more. For every ECHO_REQUEST
|
||||
sent a period "." is printed, while for every ECHO_REPLY received a
|
||||
backspace is printed. This provides a rapid display of how many
|
||||
packets are being dropped. Only the super-user may use this option.
|
||||
This can be very hard on a network and should be used with caution.
|
||||
Flood ping. Outputs packets as fast as they come back or one hundred times
|
||||
per second, whichever is more. For every ECHO_REQUEST sent a period "." is
|
||||
printed, while for every ECHO_REPLY received a backspace is printed. This
|
||||
provides a rapid display of how many packets are being dropped. Only the
|
||||
super-user may use this option. This can be very hard on a network and
|
||||
should be used with caution.
|
||||
|
||||
*-G sweepmaxsize*
|
||||
Specify the maximum size of ICMP payload when sending sweeping pings.
|
||||
This option is required for ping sweeps.
|
||||
Specify the maximum size of ICMP payload when sending sweeping pings. This
|
||||
option is required for ping sweeps.
|
||||
|
||||
*-g sweepminsize*
|
||||
Specify the size of ICMP payload to start with when sending sweeping
|
||||
pings. The default value is 0.
|
||||
Specify the size of ICMP payload to start with when sending sweeping pings.
|
||||
The default value is 0.
|
||||
|
||||
*-h sweepincrsize*
|
||||
Specify the number of bytes to increment the size of ICMP payload
|
||||
after each sweep when sending sweeping pings. The default value is 1.
|
||||
Specify the number of bytes to increment the size of ICMP payload after
|
||||
each sweep when sending sweeping pings. The default value is 1.
|
||||
|
||||
*-I iface*
|
||||
Source multicast packets with the given interface address. This flag
|
||||
only applies if the ping destination is a multicast address.
|
||||
Source multicast packets with the given interface address. This flag only
|
||||
applies if the ping destination is a multicast address.
|
||||
|
||||
*-i wait*
|
||||
Wait wait seconds between sending each packet. The default is to wait
|
||||
for one second between each packet. The wait time may be fractional,
|
||||
but only the super-user may specify values less than 1 second. This
|
||||
option is incompatible with the -f option.
|
||||
Wait wait seconds between sending each packet. The default is to wait for
|
||||
one second between each packet. The wait time may be fractional, but only
|
||||
the super-user may specify values less than 1 second. This option is
|
||||
incompatible with the -f option.
|
||||
|
||||
*-L*
|
||||
Suppress loopback of multicast packets. This flag only applies if the
|
||||
ping destination is a multicast address.
|
||||
Suppress loopback of multicast packets. This flag only applies if the ping
|
||||
destination is a multicast address.
|
||||
|
||||
*-l preload*
|
||||
If preload is specified, ping sends that many packets as fast as
|
||||
possible before falling into its normal mode of behavior. Only the
|
||||
super-user may use this option.
|
||||
If preload is specified, ping sends that many packets as fast as possible
|
||||
before falling into its normal mode of behavior. Only the super-user may
|
||||
use this option.
|
||||
|
||||
*-M mask | time*
|
||||
Use ICMP_MASKREQ or ICMP_TSTAMP instead of ICMP_ECHO. For mask, print
|
||||
the netmask of the remote machine. Set the net.inet.icmp.maskrepl MIB
|
||||
variable to enable ICMP_MASKREPLY. For time, print the origination,
|
||||
reception and transmission timestamps.
|
||||
Use ICMP_MASKREQ or ICMP_TSTAMP instead of ICMP_ECHO. For mask, print the
|
||||
netmask of the remote machine. Set the net.inet.icmp.maskrepl MIB variable
|
||||
to enable ICMP_MASKREPLY. For time, print the origination, reception and
|
||||
transmission timestamps.
|
||||
|
||||
*-m ttl*
|
||||
Set the IP Time To Live for outgoing packets. If not specified, the
|
||||
kernel uses the value of the net.inet.ip.ttl MIB variable.
|
||||
Set the IP Time To Live for outgoing packets. If not specified, the kernel
|
||||
uses the value of the net.inet.ip.ttl MIB variable.
|
||||
|
||||
*-n*
|
||||
Numeric output only. No attempt will be made to lookup symbolic names
|
||||
for host addresses.
|
||||
Numeric output only. No attempt will be made to lookup symbolic names for
|
||||
host addresses.
|
||||
|
||||
*-o*
|
||||
Exit successfully after receiving one reply packet.
|
||||
|
||||
*-p pattern*
|
||||
You may specify up to 16 "pad" bytes to fill out the packet you
|
||||
send. This is useful for diagnosing data-dependent problems in a
|
||||
network. For example, "-p ff" will cause the sent packet to be
|
||||
filled with all ones.
|
||||
You may specify up to 16 "pad" bytes to fill out the packet you send. This
|
||||
is useful for diagnosing data-dependent problems in a network. For
|
||||
example, "-p ff" will cause the sent packet to be filled with all ones.
|
||||
|
||||
*-Q*
|
||||
Somewhat quiet output. Don't display ICMP error messages that are in
|
||||
response to our query messages. Originally, the -v flag was required
|
||||
to display such errors, but -v displays all ICMP error messages. On a
|
||||
busy machine, this output can be overbear- ing. Without the -Q flag,
|
||||
ping prints out any ICMP error mes- sages caused by its own
|
||||
ECHO_REQUEST messages.
|
||||
response to our query messages. Originally, the -v flag was required to
|
||||
display such errors, but -v displays all ICMP error messages. On a busy
|
||||
machine, this output can be overbear- ing. Without the -Q flag, ping
|
||||
prints out any ICMP error mes- sages caused by its own ECHO_REQUEST
|
||||
messages.
|
||||
|
||||
*-q*
|
||||
Quiet output. Nothing is displayed except the summary lines at
|
||||
startup time and when finished.
|
||||
Quiet output. Nothing is displayed except the summary lines at startup
|
||||
time and when finished.
|
||||
|
||||
*-R*
|
||||
Record route. Includes the RECORD_ROUTE option in the ECHO_REQUEST
|
||||
packet and displays the route buffer on returned packets. Note that
|
||||
the IP header is only large enough for nine such routes; the
|
||||
traceroute(8) command is usually better at determining the route
|
||||
packets take to a particular destination. If more routes come back
|
||||
than should, such as due to an illegal spoofed packet, ping will print
|
||||
the route list and then truncate it at the correct spot. Many hosts
|
||||
ignore or discard the RECORD_ROUTE option.
|
||||
Record route. Includes the RECORD_ROUTE option in the ECHO_REQUEST packet
|
||||
and displays the route buffer on returned packets. Note that the IP header
|
||||
is only large enough for nine such routes; the traceroute(8) command is
|
||||
usually better at determining the route packets take to a particular
|
||||
destination. If more routes come back than should, such as due to an
|
||||
illegal spoofed packet, ping will print the route list and then truncate it
|
||||
at the correct spot. Many hosts ignore or discard the RECORD_ROUTE option.
|
||||
|
||||
*-r*
|
||||
Bypass the normal routing tables and send directly to a host on an
|
||||
attached network. If the host is not on a directly-attached network,
|
||||
an error is returned. This option can be used to ping a local host
|
||||
through an interface that has no route through it (e.g., after the
|
||||
interface was dropped).
|
||||
Bypass the normal routing tables and send directly to a host on an attached
|
||||
network. If the host is not on a directly-attached network, an error is
|
||||
returned. This option can be used to ping a local host through an
|
||||
interface that has no route through it (e.g., after the interface was
|
||||
dropped).
|
||||
|
||||
*-S src_addr*
|
||||
Use the following IP address as the source address in outgoing
|
||||
packets. On hosts with more than one IP address, this option can be
|
||||
used to force the source address to be something other than the IP
|
||||
address of the interface the probe packet is sent on. If the IP
|
||||
address is not one of this machine's interface addresses, an error is
|
||||
returned and nothing is sent.
|
||||
Use the following IP address as the source address in outgoing packets. On
|
||||
hosts with more than one IP address, this option can be used to force the
|
||||
source address to be something other than the IP address of the interface
|
||||
the probe packet is sent on. If the IP address is not one of this
|
||||
machine's interface addresses, an error is returned and nothing is sent.
|
||||
|
||||
*-s packetsize*
|
||||
Specify the number of data bytes to be sent. The default is 56, which
|
||||
translates into 64 ICMP data bytes when combined with the 8 bytes of
|
||||
ICMP header data. Only the super-user may specify val- ues more than
|
||||
default. This option cannot be used with ping sweeps.
|
||||
translates into 64 ICMP data bytes when combined with the 8 bytes of ICMP
|
||||
header data. Only the super-user may specify val- ues more than default.
|
||||
This option cannot be used with ping sweeps.
|
||||
|
||||
*-T ttl*
|
||||
Set the IP Time To Live for multicasted packets. This flag only
|
||||
applies if the ping destination is a multicast address.
|
||||
Set the IP Time To Live for multicasted packets. This flag only applies if
|
||||
the ping destination is a multicast address.
|
||||
|
||||
*-t timeout*
|
||||
Specify a timeout, in seconds, before ping exits regardless of how
|
||||
many packets have been received.
|
||||
Specify a timeout, in seconds, before ping exits regardless of how many
|
||||
packets have been received.
|
||||
|
||||
*-v*
|
||||
Verbose output. ICMP packets other than ECHO_RESPONSE that are
|
||||
received are listed.
|
||||
Verbose output. ICMP packets other than ECHO_RESPONSE that are received
|
||||
are listed.
|
||||
|
||||
*-W waittime*
|
||||
Time in milliseconds to wait for a reply for each packet sent. If a
|
||||
reply arrives later, the packet is not printed as replied, but
|
||||
considered as replied when calculating statistics.
|
||||
Time in milliseconds to wait for a reply for each packet sent. If a reply
|
||||
arrives later, the packet is not printed as replied, but considered as
|
||||
replied when calculating statistics.
|
||||
|
||||
*-z tos*
|
||||
Use the specified type of service.
|
||||
@ -554,33 +572,34 @@ The ping utility exits with one of the following values:
|
||||
0 At least one response was heard from the specified host.
|
||||
|
||||
2 The transmission was successful but no responses were
|
||||
received.
|
||||
received.
|
||||
|
||||
any other value an error occurred. These values are defined in
|
||||
<sysexits.h>.
|
||||
any other value an error occurred. These values are defined in <sysexits.h>.
|
||||
|
||||
**NOTES:**
|
||||
|
||||
When using ping for fault isolation, it should first be run on the
|
||||
local host, to verify that the local network interface is up and
|
||||
running. Then, hosts and gateways further and further away should be
|
||||
"pinged". Round-trip times and packet loss statistics are computed.
|
||||
If duplicate packets are received, they are not included in the packet
|
||||
loss calculation, although the round trip time of these packets is
|
||||
used in calculating the round-trip time statistics. When the
|
||||
specified number of packets have been sent a brief summary is
|
||||
displayed, showing the number of packets sent and received, and the
|
||||
minimum, mean, maximum, and standard deviation of the round-trip
|
||||
times.
|
||||
When using ping for fault isolation, it should first be run on the local host,
|
||||
to verify that the local network interface is up and running. Then, hosts and
|
||||
gateways further and further away should be "pinged". Round-trip times and
|
||||
packet loss statistics are computed. If duplicate packets are received, they
|
||||
are not included in the packet loss calculation, although the round trip time
|
||||
of these packets is used in calculating the round-trip time statistics. When
|
||||
the specified number of packets have been sent a brief summary is displayed,
|
||||
showing the number of packets sent and received, and the minimum, mean,
|
||||
maximum, and standard deviation of the round-trip times.
|
||||
|
||||
This program is intended for use in network testing, measurement and
|
||||
management. Because of the load it can impose on the network, it is
|
||||
unwise to use ping during normal operations or from automated scripts.
|
||||
management. Because of the load it can impose on the network, it is unwise to
|
||||
use ping during normal operations or from automated scripts.
|
||||
|
||||
This command can fail if more than the FD_SET size number of file descriptors
|
||||
are open.
|
||||
|
||||
**EXAMPLES:**
|
||||
|
||||
The following is an example of how to use ``oing`` to ping:
|
||||
.. code:: c
|
||||
|
||||
.. code:: shell
|
||||
|
||||
[/] # ping 10.10.10.1
|
||||
PING 10.10.10.1 (10.10.10.1): 56 data bytes
|
||||
@ -592,7 +611,7 @@ The following is an example of how to use ``oing`` to ping:
|
||||
--- 10.10.10.1 ping statistics ---
|
||||
5 packets transmitted, 5 packets received, 0.0% packet loss
|
||||
round-trip min/avg/max/stddev = 0.229/0.256/0.356/0.050 ms
|
||||
\[/] # ping -f -c 10000 10.10.10.1
|
||||
[/] # ping -f -c 10000 10.10.10.1
|
||||
PING 10.10.10.1 (10.10.10.1): 56 data bytes
|
||||
.
|
||||
--- 10.10.10.1 ping statistics ---
|
||||
@ -604,29 +623,30 @@ The following is an example of how to use ``oing`` to ping:
|
||||
.. index:: CONFIGURE_SHELL_NO_COMMAND_PING
|
||||
.. index:: CONFIGURE_SHELL_COMMAND_PING
|
||||
|
||||
This command is included in the default shell command set.
|
||||
When building a custom command set, define``CONFIGURE_SHELL_COMMAND_PING`` to have this
|
||||
This command is included in the default shell command set. When building a
|
||||
custom command set, define ``CONFIGURE_SHELL_COMMAND_PING`` to have this
|
||||
command included.
|
||||
|
||||
This command can be excluded from the shell command set by
|
||||
defining ``CONFIGURE_SHELL_NO_COMMAND_PING`` when all
|
||||
shell commands have been configured.
|
||||
This command can be excluded from the shell command set by defining
|
||||
``CONFIGURE_SHELL_NO_COMMAND_PING`` when all shell commands have been
|
||||
configured.
|
||||
|
||||
**PROGRAMMING INFORMATION:**
|
||||
|
||||
.. index:: rtems_shell_rtems_main_ping
|
||||
|
||||
The ``ping`` is implemented by a C language function
|
||||
which has the following prototype:
|
||||
The ``ping`` is implemented by a C language function which has the following
|
||||
prototype:
|
||||
|
||||
.. code:: c
|
||||
|
||||
int rtems_shell_rtems_main_ping(
|
||||
int argc,
|
||||
char \**argv
|
||||
char **argv
|
||||
);
|
||||
|
||||
The configuration structure for the ``ping`` has the
|
||||
following prototype:
|
||||
The configuration structure for the ``ping`` has the following prototype:
|
||||
|
||||
.. code:: c
|
||||
|
||||
extern rtems_shell_cmd_t rtems_shell_PING_Command;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user