Quick ?s
Cheat Sheets
Man Pages
The Lynx
Software
SNMPNETSTAT(1)			   Net-SNMP			SNMPNETSTAT(1)



NAME
       snmpnetstat53 - display networking status and configuration information
       from a network entity via SNMP

SYNOPSIS
       snmpnetstat53 [common options] [-Ca] [-Cn] AGENT
       snmpnetstat53 [common options] [-Ci] [-Co] [-Cr] [-Cn] [-Cs] AGENT
       snmpnetstat53  [common  options]  [-Ci]	[-Cn]  [-CI  interface]  AGENT
       [interval]
       snmpnetstat53 [common options] [-Ca] [-Cn] [-Cs] [-CP protocol] AGENT

DESCRIPTION
       The  snmpnetstat53  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  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 interval specified, snmpnetstat53 will
       continuously display the information regarding packet  traffic  on  the
       configured  network  interfaces.   The  fourth form displays statistics
       about the named protocol.

       AGENT identifies a target SNMP agent, which is instrumented to  monitor
       the  given objects.  At its simplest, the AGENT specification will con
       sist of a hostname or an IPv4 address. In this situation,  the  command
       will  attempt  communication with the agent, using UDP/IPv4 to port 161
       of the given target host. See snmpcmd(1) for a full list of the	possi
       ble formats for AGENT.


OPTIONS
       The options have the following meaning:

       common options
	Please see snmpcmd(1) for a list of possible values for common options
       as well as their descriptions.

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

       -Ci  Show  the  state of all of the network interfaces.	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  dis
       played.

       -Co  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 router.

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

       -Cn Show network addresses as numbers  (normally  snmpnetstat53	inter
       prets  addresses  and  attempts	to  display  them symbolically).  This
       option may be used with any of the display formats.

       -CP 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  typi
       cally  means  that  there  are  no  interesting numbers to report.  The
       program will complain if protocol is unknown or if there is no  statis
       tics routine for it.

       -Cs  Show per-protocol statistics.  When used with the -Cr option, show
       routing statistics instead.

       -Cr Show the routing tables.  When -Cs is also present, show per-proto
       col routing statistics instead of the routing tables.

       When  snmpnetstat53 is invoked with an interval argument, it displays a
       running count of statistics related to  network	interfaces.   interval
       is the number of seconds between reporting of statistics.

       The Active Sockets Display (default)

       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  net
       work.port if  a	sockets  address specifies  a  network	but no spe
       cific  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 -Cn 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).   Unspeci
       fied,  or  wildcard, addresses and ports appear as *.

       The Interface Display

       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

       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.

       The Interface Display with an Interval

       When  snmpnetstat53 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 -CI 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.

       The Active Sockets Display for a Single Protocol

       When a protocol is specified with the -CP option, the information  dis
       played  is  similar  to that in the default display for active sockets,
       except the display is limited to the given protocol.

EXAMPLES
       Example of using snmpnetstat53 to displaly active sockets (default):

       % snmpnetstat53 -v 2c -c public -Ca testhost

       Active Internet (tcp) Connections (including servers)
       Proto Local Address		  Foreign Address		  (state)
       tcp   *.echo			   *.*				  LISTEN
       tcp   *.discard			   *.*				  LISTEN
       tcp   *.daytime			   *.*				  LISTEN
       tcp   *.chargen			   *.*				  LISTEN
       tcp   *.ftp			   *.*				  LISTEN
       tcp   *.telnet			   *.*				  LISTEN
       tcp   *.smtp			   *.*				  LISTEN
       ...

       Active Internet (udp) Connections
       Proto Local Address
       udp    *.echo
       udp    *.discard
       udp    *.daytime
       udp    *.chargen
       udp    *.time
       ...

       % snmpnetstat53 -v 2c -c public -Ci testhost

       Name	Mtu Network    Address		Ipkts	Ierrs	 Opkts Oerrs Queue
       eri0    1500 10.6.9/24  testhost     170548881  245601	687976	   0	0
       lo0     8232 127        localhost      7530982	    0  7530982	   0	0

       Example of using snmpnetstat53 to show statistics about a specific pro
       tocol:

       % snmpnetstat53 -v 2c -c public -CP tcp testhost

       Active Internet (tcp) Connections
       Proto Local Address		  Foreign Address		  (state)
       tcp   *.echo			   *.*				  LISTEN
       tcp   *.discard			   *.*				  LISTEN
       tcp   *.daytime			   *.*				  LISTEN
       tcp   *.chargen			   *.*				  LISTEN
       tcp   *.ftp			   *.*				  LISTEN
       tcp   *.telnet			   *.*				  LISTEN
       tcp   *.smtp			   *.*				  LISTEN
       ...

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	  25 Oct 2003			SNMPNETSTAT(1)




Yals.net is © 1999-2009 Crescendo Communications
Sharing tech info on the web for more than a decade!
This page was generated Thu Apr 30 17:05:22 2009