SNMPNETSTAT(1)							     Net-SNMP							    SNMPNETSTAT(1)

NAME

       snmpnetstat - show network status using SNMP

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 information presented.  The first form of  the  com-
       mand  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 interval 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 community 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 snmpnetstat interprets addresses and	attempts  to  display  them  symbolically).   This
	      option may be used with any of the display formats.

       -P protocol
	      Show  statistics	about  protocol,  which  is  either  a well-known name for a protocol or an alias for it.  Some protocol names and
	      aliases are listed in the file /etc/protocols.  A null response typically means that there are no  interesting  numbers  to  report.
	      The program will complain if protocol is unknown or if there is no statistics routine for it.

       -s     Show per-protocol statistics.

       -r     Show the routing tables.	When -s is also present, show routing statistics instead.

       The  default  display, for active sockets, shows the local 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 symbolically 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 ``wildcard'', addresses and ports
       appear as ``*''.

       The interface display provides a table of cumulative statistics	regarding  packets  transferred,  errors,  and	collisions.   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 packets.  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 outgo-
       ing interface.  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 dis-
       play 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.

4.2 Berkeley Distribution					    21 Aug 2000 						    SNMPNETSTAT(1)