Purpose and features of the program:

Checks the memory (physical and virtual) usage for Windows, Solaris, Linux servers, Cisco firewalls and MacAffee WebGateway

Author: Martin Fuerstenau, Oce Printing Systems
        martin.fuerstenau_at_oce.com

Date:   14 Jul 2011

Setting a threshold for physical memory doesn't make much sense in modern operating systems. But the virtual 
momory should be monitored.

- Windows: Physical and virtual memory is monitored. Threshold (and alarm) for virtual memory.

- Linux: Physical memory, swap space and momory buffers is monitored. Threshold (and alarm) for swap space.

- Solaris: This is a little bit tricky. The swapfs (virtual memory) uses a part of the physical memory and the 
  swap space. With most memory plugins you only will have the swap space monitored. This plugin monitors
  the virtual monitor physical momory, virtual memory and swapspace. If you look for you swapspace with swap -l
  you will see the use of your swapfs and not of the swapspace. Threshold (and alarm) is based on virtual memory (swapfs)


./check_snmp_memory -h
check_snmp_memory,Version 1.1
Copyright (c) 2011 Martin Fuerstenau - Oce Printing Systems

Usage: check_snmp_memory -H <host> [-C community] [--cisco] -w <Warning threshold in %> -c <Critical threshold in %>

or

Usage: check_snmp_memory -h for help.

    -H, --hostname=HOST            Name or IP address of host to check
    -C, --community=community      SNMP community (default public)

    -v, --snmpversion=snmpversion  Version of the SNMP protocol. At present version 1 or 2c

    -p, --portsnmpversion=snmpversion  Version of the SNMP protocol. At present version 1 or 2c

    -w, --warning=threshold        Warning threshold of memory usage in percent for virtual memory
                                   (MS Windows systems), swap space (Linux systems) or swapfs (Solaris)

    -c, --critical=threshold       Critical threshold of memory usage in percent for virtual memory
                                   (MS Windows systems) or swap space (Unix/Linux systems)

        --cisco                    It is a cisco firewall and not a standard Linux system
    -h, --help Short help message