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snmpnetstat



SYNOPSIS

       snmpnetstat [common arguments] [-a] [-n] host
       snmpnetstat [common arguments] [-iors] [-n] host
       snmpnetstat  [common  arguments]  [-i] [-n] [-I interface]
       host [interval]
       snmpnetstat [common arguments]  [-a]  [-n]  [-P  protocol]
       host


DESCRIPTION

       The  snmpnetstat  command symbolically displays the values
       of various network-related information  retrieved  from  a
       remote system using the SNMP protocol.  There are a number
       of output formats, depending on the options for the infor­
       mation  presented.  The first form of the command displays
       a list of active sockets.  The second  form  presents  the
       values  of  other network-related information according to
       the option selected.  Using the third form, with an inter­
       val  specified,  snmpnetstat will continuously display the
       information regarding packet  traffic  on  the  configured
       network  interfaces.   The fourth form displays statistics
       about the named protocol.

       The hostname specification may be either a host name or an
       internet address specified in "dot notation".

       The  version 1 and version 2c community specifies the com­
       munity name for the transaction with the remote system.

       The options have the following meaning:

       -a     With the default display, show  the  state  of  all
              sockets;  normally sockets used by server processes
              are not shown.

       -i     Show the state of all of the interfaces.

       -o     Show an abbreviated interface status, giving octets
              in place of packets.  This is useful when enquiring
              virtual interfaces (such as  Frame-Relay  circuits)
              on a Cisco router.

       -I interface
              Show  information  only  about this interface; used
              with an interval as described below.

       -n     Show network addresses as numbers  (normally  snmp­
              netstat  interprets  addresses and attempts to dis­
              play them symbolically).  This option may  be  used
              with any of the display formats.

       -P protocol
              Show  statistics  about protocol, which is either a

       and remote addresses, protocol, and the internal state  of
       the   protocol.    Address   formats   are   of  the  form
       ``host.port'' or ``network.port'' if  a  socket's  address
       specifies  a  network  but no specific host address.  When
       known the host and network addresses are displayed symbol­
       ically   according   to  the  data  bases  /etc/hosts  and
       /etc/networks, respectively.  If a symbolic  name  for  an
       address  is unknown, or if the -n option is specified, the
       address is printed numerically, according to  the  address
       family.  For more information regarding the Internet ``dot
       format,'' refer  to  inet(3N).   Unspecified,  or  ``wild­
       card'', addresses and ports appear as ``*''.

       The  interface  display  provides  a  table  of cumulative
       statistics regarding packets transferred, errors, and col­
       lisions.   The  network addresses of the interface and the
       maximum transmission unit (``mtu'') are also displayed.

       The routing table display indicates the  available  routes
       and  their  status.   Each route consists of a destination
       host or network and a gateway to use in  forwarding  pack­
       ets.   The flags field shows the state of the route (``U''
       if ``up''), whether the route is  to  a  gateway  (``G''),
       whether  the  route  was created dynamically by a redirect
       (``D''), and whether the route  has  been  modified  by  a
       redirect  (``M'').   Direct  routes  are  created for each
       interface attached to the local host;  the  gateway  field
       for  such entries shows the address of the outgoing inter­
       face.  The interface entry indicates the network interface
       utilized for the route.

       When  snmpnetstat is invoked with an interval argument, it
       displays a running count of statistics related to  network
       interfaces.   This  display  consists  of a column for the
       primary interface and a column summarizing information for
       all  interfaces.   The  primary  interface may be replaced
       with another interface with the -I option.  The first line
       of each screen of information contains a summary since the
       system was last rebooted.  Subsequent lines of output show
       values accumulated over the preceding interval.


SEE ALSO

       snmpcmd(1),  iostat(1),  vmstat(1), hosts(5), networks(5),
       protocols(5), services(5).


BUGS

       The notion of errors is ill-defined.

                           21 Aug 2000             SNMPNETSTAT(1)
  

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