Ping Subagent
This subagent can be used to measure ICMP ping response times from one location to another.
Provided Parameters
When loaded, PING subagent adds the following parameters to agent:
| Parameter | Description |
|---|---|
| Icmp.AvgPingTime(target) | Average ICMP ping response time from target for last minute. Argument target can be either IP address or name specified in Target configuration record (see below). |
| Icmp.LastPingTime(target) | Last ICMP ping response time from target. Argument target can be either IP address or name specified in Target configuration record (see below). |
| Icmp.PacketLoss(target) | ICMP ping packet loss (in percents) for target. Argument target can be either IP address or name specified in Target configuration record (see below). |
| Icmp.Ping(target,timeout,psize) | ICMP ping response time from target. Agent will send echo request as soon as it receives request for paramter's value, and will return response time for that particular request. Argument target should be an IP address. Optional argument timeout specifies timeout in milliseconds. Default timeout is 1 second. Optional argument psize specifies packet size in bytes, including IP header. If this argument is omited, value from DefaultPacketSize configuration parameter will be used.
Please note that other parameters just returns result of background ping process, while this parameter waits for actual ping completion and then returns the result. Because of this behavior, it is not recommended to use Icmp.Ping parameter for instant monitoring, only for occasional tests. For instant monitoring, you should configure targets for background ping and use Icmp.AvgPingTime or Icmp.LastPingTime parameters to retrieve results. |
| Icmp.PingStdDev(target) | Standard deviation of ICMP ping response time for target. Argument target can be either IP address or name specified in Target configuration record (see below). |
Provided Lists
| List | Description |
|---|---|
| Icmp.Targets | List of configured ping targets. Each line has the following fields, separated by spaces:
|
Configuration file
All configuration parameters related to PING subagent should be placed into *PING section of agent's configuration file. The following configuration parameters are supported:
| Parameter | Format | Description | Default value |
|---|---|---|---|
| DefaultPacketSize | bytes | Set default packet size to bytes. | 46 |
| PacketRate | packets | Set ping packet rate per minute. Allowed values are from 1 to 60 and values below or above will be adjusted automatically. | 4 |
| Target | ip:name:psize | Add target with IP address ip to background ping target list and assign an optional name name to it. Target will be pinged using packets of psize bytes size. Name and packet size fields are optional and can be omited. This parameter can be given multiple times to add multiple targets. | none |
| Timeout | milliseconds | Set response timeout to milliseconds. Allowed values are from 500 to 5000 and values below or above will be adjusted automatically. | 3000 |
Configuration Example
# This sample nxagentd.conf instructs agent to:
# 1. load PING subagent
# 2. Ping target 10.0.0.1 with default size (46 bytes) packets and 10.0.0.2 with 1000 bytes packets
# 3. Timeout for ping set to 1 second and pings are sent 12 times per minute (each 5 seconds)
MasterServers = netxms.demo
SubAgent = ping.nsm
*PING
Timeout = 1000
PacketRate = 12
Target = 10.0.0.1:target_1
Target = 10.0.0.2:target_2:1000
Notes
PING subagent uses value of 10000 to indicate timed out requests.