Monitoring your system to know if there are any faults.
Most faults are shown in the operator GUI so that the operator can alert a technician. But in some cases it is good to be proactive and get the alert before an operator even notices the problem.
Through the use of a small Linux server running the software Mimer InfoServer you can keep track of all devices in the Mimer SoftRadio system and also all operators and even see what radios each operator is logged on to.
This is helpful in systems where you need to know that each radio is being monitored, at least by one operator.
The server is checked through an ordinary web browser.
System exampel with 27 radios and 5 operators
To activate the monitoring function from each operator, an option needs to be installed in the Mimer SoftRadio software. It will then report connected radios etc to a predefined IP-address where the InfoServer is.
The next generation of the InfoServer will implement an SNMP agent that supports SNMP v1 and v2c, and possibly v3.
It will respond to all standard requests supported by a typical Debian Linux system’s SNMP daemon (including the System objects from RFC-1213).
Functionality that is standard of the Linux SNMP daemon such as monitoring of these standard objects, as well as setting up SNMP traps for them, can be configured.
R2 of the InfoServer will also have Mimer-specific objects (with a Mimer-specific MIB definition file).
This will be at least:
- number of expected radios
- number of radios with failing connection
- number of expected operators
- number of radios not visible at any operator
- number of radios failing at any operator
SNMP traps for these additional values can be set up with configurable severity like Major, Minor and Warning.
In order to support these objects, there will be config files on the server that lists what radio ID´s and what User ID´s that are expected to be connected.
Nagios Core is open source software accessible from any web browser. It is used by many service organizations to keep track of large IP infrastructures.
We have adopted Nagios Core so that it will present information from the Mimer InfoServer in a way that is easy to overview. It will also do health checks on the system. The configuration for the checks is set up on the InfoServer.
- All units are presented with an icon and graphically where they are placed in the LAN/WAN.
- All radio devices are checked with PING and that the firmware in the network interface is running.
- All operator PC:s are checked with PING and that their SoftRadio client is running in the PC.
- Servers are checked with PING and also to see that there is no overload or that the disk is full.
- Routers in the LAN/WAN can also be checked, if they have their own fixed IP address.
In this way a two level, or more, check is done on all devices. Working devices gets a green colour and devices with a problem gets a red colour. You can immediately see if anything is malfunctioning.
Other possible checks could for example include making an error message if none of the operators is monitoring a predefined radio.
The system can be set up so that for example an email is sent when a fault occurs.
Example of setup with 10 operators and 10 radios at two LAN-nodes.
Also shown are a management console, the InfoServer and two switches.
Four of the operators are signalling faults.
You can also take out reports and history statistics on how the system is working per device, group of devices or the whole system.
Read more on Nagios on the systems web page: www.nagios.com
Exampel of a list of devices showing OK/Fault, up time and much more.
Customers already using a Nagios system for network overview can add checks to that system to also keep track of their Mimer SoftRadio system.
Mimer InfoServer is used at Bangalore Airport in India