SNMPXCONN(1) — NEWS-OS Programmer’s Manual

NAME

snmpxconn − SNMP TCP connection monitor

SYNOPSIS

snmpxconn configfile [options]

DESCRIPTION

snmpxconn is a network monitoring application based on X Windows Version 11 and the Simple Network Management Protocol. This application will determine the number of active TCP connections (in ESTABLISHED or CLOSE_WAIT state) for each End System (host, terminal server, etc..) being monitored. It will also display, for each End System monitored, the number of TCP connections to each other End System monitored, or passing through a monitored Intermediate System (gateway/router). Network entities to be monitored are determined by way of the snmpxconn configuration file.

SNMP OPTIONS

The following options control the SNMP actions. -i pollint

Specifies how often the application will send an SNMP request to the specified agents. The default is 60 seconds.

X-WINDOW OPTIONS

The following are the X-window options. These options follow the X-window convention as closely as possible. -display host:display

This option allows snmpxconn to be run on a remote X server. In specifying the display, use the standard X format. For example, rebel:0.0.

Using X Resources

Snmpxconn reads the command line arguments, then passes through the users $HOME/.Xdefaults file and creates a local resource database. Any command line option will take precedence over the .Xdefaults parameter. Here are a list of all settable snmpxconn parameters in .Xdefaults format, the values given are the default values if nothing is specified:

snmpxconn.display:1:0.0
snmpxconn.font:6x10
snmpxconn.geometry:NULL (as big as font dictates)
snmpxconn.borderwidth:2
snmpxconn.name:snmpxconn
snmpxconn.reverseVideo:off
snmpxconn.color:on
snmpxconn.background:NavyBlue
snmpxconn.foreground:white
snmpxconn.bordercolor:red
snmpxconn.graphcolor:yellow
snmpxconn.interval:60

CONFIGURATION FILE

The snmpxconn configuration file may contain the following configuration parameters:

-ES name address community xcoord ycoord: Monitor the End System name at IP address address using community community. For display purposes, place the End System at coordinates xcoord ycoord. There is a limit of 15 characters on community names.

-IS name address community xcoord ycoord: Monitor the Intermediate System name at IP address address using community community. For display purposes, place the Intermediate System at coordinates xcoord ycoord. There is a limit of 15 characters on community names.

-LABEL label Label the display with label label

FILES

configfile configuration file

BUGS

snmpxconn has a very simplistic view of Internet routing. Hence it will not accurately display the paths TCP connections take if the routing in the network layer is extremely complex. For example, in cases where incoming traffic is passing through a Intermediate System to a monitored End System, and outgoing traffic is passing through another Intermediate System, the TCP connection will be shown as only passing through the second Intermediate System. snmpxconn will only indicate a path from a monitored End System through a monitored Intermediate System if the Intermediate System is the next hop in the route from the End System to the other end of the TCP connection. It is recommended that snmpxconn only be used to monitor Intermediate and End Systems on the same local LAN.

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