Return to nstat.8c CVS log

Up to [Power 6/32 Unix Tahoe 4.2BSD] / cci / usr / src / etc / nstat

Annotation of cci/usr/src/etc/nstat/nstat.8c, revision 1.1

1.1     ! root        1: .TH NSTAT 8C "18 November 1984"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: nstat \- show network status
        !             5: .SH SYNOPSIS
        !             6: .B nstat
        !             7: [ 
        !             8: .B \-HchimnrstEA
        !             9: .] [
        !            10: .B \-d
        !            11: .I device-name
        !            12: ] [
        !            13: .B \-p
        !            14: .I protocol 
        !            15: ] [
        !            16: .B  \-a
        !            17: .I interval
        !            18: ] [
        !            19: .I system
        !            20: ] [
        !            21: .I core
        !            22: ]
        !            23: .SH DESCRIPTION
        !            24: .I Nstat 
        !            25: displays the snapshot of networking subsystem status. The user can use the
        !            26: statistics collected at the network interfaces, at each
        !            27: protocol layer, and at network memory pool to monitor the workload,
        !            28: reliability and throughput of data communication.
        !            29: .PP
        !            30: Displayed address formats are of the form ``host.port'' or ``network.port''
        !            31: if a socket's address specifies a network but no specific host address.
        !            32: When known the host and network addresses are displayed symbolically
        !            33: according to the data bases
        !            34: .I /etc/hosts
        !            35: and
        !            36: .IR /etc/networks ,
        !            37: respectively. If a symbolic name for an address is unknown, or if
        !            38: the 
        !            39: .B \-n
        !            40: option is specified, the address is printed in the Internet ``dot format'';
        !            41: refer to 
        !            42: .IR inet (3N)
        !            43: for more information regarding this format.
        !            44: Unspecified,
        !            45: or 
        !            46: .I wildcard, 
        !            47: addresses and ports appear as ``*''.  
        !            48: .PP
        !            49: The user can choose certain status or statistics, or a different display 
        !            50: format by specifying a combination of the following options:
        !            51: .TP 
        !            52: .B \-H
        !            53: is the HELP function.  It shows users all the available options in nstat
        !            54: together with brief explaination.
        !            55: .TP 
        !            56: .B \-A
        !            57: show the address of protocol control blocks of all connections; used mainly
        !            58: for debugging the networking subsystem.
        !            59: .TP
        !            60: .B \-a interval
        !            61: specify
        !            62: .I nstat
        !            63: to continuously display the selected status, pausing for
        !            64: .I interval
        !            65: seconds before between each display.
        !            66: .TP
        !            67: .B \-c
        !            68: show all connections in the system.
        !            69: There are a number of display formats, depending on the information
        !            70: presented.  The default display, for active sockets, shows the local
        !            71: and remote addresses, send and receive queue sizes (in bytes), protocol,
        !            72: and, optionally, the internal state of the protocol.
        !            73: .TP
        !            74: .B \-d "device-name"
        !            75: show statistics collected at the network interface device;
        !            76: .I ace, ace0 or ace1
        !            77: is valid device name for ACC Ethernet interface, and
        !            78: .I enp, enp0 or enp1
        !            79: is valid device name for CMC Ethernet interface.  When a device name is
        !            80: specified without device unit number (ace or enp),  the statistics of
        !            81: all the devices of that type are displayed.
        !            82: .TP
        !            83: .B \-h
        !            84: show the state of the IMP host table.
        !            85: .TP
        !            86: .B \-i
        !            87: show the state of interfaces which have been auto-configured
        !            88: (interfaces statically configured into a system, but not
        !            89: located at boot time are not shown).
        !            90: The display provides a table of cumulative
        !            91: statistics regarding packets transferred, errors, and collisions.
        !            92: The network address (currently Internet specific) of the interface
        !            93: and the maximum transmission unit (``mtu'') are also displayed.
        !            94: .TP
        !            95: .B \-m
        !            96: show statistics recorded by the 
        !            97: .I mbuf
        !            98: memory management routines
        !            99: (the network manages a ``private share'' of memory)
        !           100: .TP
        !           101: .B \-n
        !           102: show network addresses as numbers (normally 
        !           103: .I nstat
        !           104: interprets addresses and attempts to display them
        !           105: symbolically)
        !           106: .TP
        !           107: .BI \-p " proto"
        !           108: show only connections or statistics relating to the protocol
        !           109: .IR proto ;
        !           110: the protocol is specified symbolically, and may be any
        !           111: protocol listed in the file
        !           112: .IR /etc/protocols .
        !           113: If this option is not given,
        !           114: .I nstat
        !           115: displays connections or statistics of all protocols.
        !           116: .TP
        !           117: .B \-r
        !           118: show the routing tables.
        !           119: The routing table display indicates the available routes and
        !           120: their status.  Each route consists of a destination host or network
        !           121: and a gateway to use in forwarding packets.  The flags field shows
        !           122: the state of the route (``U'' if ``up''), and whether the route
        !           123: is to a gateway (``G'').  Direct routes are created for each
        !           124: interface attached to the local host.  The refcnt field gives the
        !           125: current number of active uses of the route.  Connection oriented
        !           126: protocols normally hold on to a single route for the duration of
        !           127: a connection while connectionless protocols obtain a route then
        !           128: discard it.  The use field provides a count of the number of packets
        !           129: sent using that route.  The interface entry indicates the network
        !           130: interface utilized for the route.
        !           131: .TP
        !           132: .B \-s
        !           133: show statistics of routing and all protocols.
        !           134: .TP
        !           135: .B \-t
        !           136: show the information regarding packet traffic on the configured
        !           137: network interfaces, pausing every 1 second. The user can change the pause 
        !           138: interval with the option
        !           139: .I -a.
        !           140: .I Nstat
        !           141: displays a running count of statistics related to
        !           142: network interfaces.  This display consists of a column summarizing
        !           143: information for all interfaces, and a column for the interface with
        !           144: the most traffic since the system was last rebooted.  The first
        !           145: line of each screen of information contains a summary since the
        !           146: system was last rebooted.  Subsequent lines of output show values
        !           147: accumulated over the preceding interval.
        !           148: .TP
        !           149: .B \-E
        !           150: displays the Internet address and Ethernet address of all the hosts that
        !           151: is currently up in the local network.
        !           152: 
        !           153: .PP
        !           154: The arguments
        !           155: .I system,
        !           156: and
        !           157: .I core
        !           158: are 
        !           159: .I positional
        !           160: driven.
        !           161: .I System
        !           162: and
        !           163: .I core
        !           164: allow substitutes for the defaults ``/vmunix'' and ``/dev/kmem''.
        !           165: The
        !           166: .I core
        !           167: file must be read with physical addresses rather than virtual addresses.
        !           168: .PP
        !           169: .SH SEE ALSO
        !           170: iostat(1),
        !           171: vmstat(1),
        !           172: hosts(5),
        !           173: networks(5),
        !           174: protocols(5),
        !           175: services(5),
        !           176: trpt(8C)
        !           177: .SH BUGS
        !           178: The notion of errors is ill-defined.  Collisions mean
        !           179: something else for the IMP.
        !           180: .PP
        !           181: If a host has two or more interfaces to the same local network, the E option 
        !           182: displays the Internet/Ethernet address pair of only one interface of which
        !           183: Ethernet address is maintained in the local host ARPA table at that time.

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.