About IP scan / auto-discovery

With the Quantellium “IP scan” program you can have your network search for new devices. Each newly found device is assigned (if possible) one of the standard Quantellium classes, after which the device is automatically added to a map.

IP scan uses different protocols to find equipment. The best results are achieved with equipment that supports SNMP. It is therefore recommended to activate SNMP on as many devices as possible!

To determine the operational status of equipment, Quantellium uses at least one (primary) but preferably two protocols. If no response is received to a status request with the primary protocol, this is retried with the secondary protocol (second opinion).

IP scan automatically tries to find a primary and a secondary protocol by testing the following protocols: SNMP, RDP, SSH, Telnet, SMB, HTTPS, HTTP, ICMP echo request (ping).

Things you should know before you start using IP scan..

  • IP scan supports Scan profiles.
  • IP scan supports SNMPv1, v2 and v3
  • Scanning can take a lot of time. For performance reasons, IP scan supports a maximum range of 2048 addresses. It is recommended to use the smallest IP ranges that still contain your network, subnet, etc.
  • An IP scan is run in the context of a individual map. After a successful scan, the resulting set of found devices is automatically mapped to default Quantellium classes and added to that map.

Performing a scan

  1. Open a browser session to your Quantellium host and log in as an administrator.
  2. Open the map (or create a new one if it does not already exist) for which you are going to perform an IP scan and unlock it.
  3. Right-click anywhere on the canvas of the map and select Map actions | IP scan.
  4. Enter the From and To IP addresses (range <= 2048).
  5. Select a scan profile and Click the [Submit] button.
  6. At the end of a scan, all found devices are assigned to Quantellium default classes and added to the map. Discovered problems are displayed in a message window.

Scan profiles

To define a new scan profile:

  1. Log in as an Administrator
  2. Select Various system settings from the main menu
  3. Scroll down to the Scan profile(s) pane

Scan profiles can not be deleted, but they can be modified.

After an IP scan for a map has been performed, the scan is automatically repeated every 7 hours. This way, a map is kept up-to-date. If this is not desired, the scan definition should be removed from the properties of a map.

Log in in as an Administrator and select Maps | Modify and remove the scan rule from the Map IP Range (s) pane.

1
2
3
4
5
6
7

The row numbers below correspond to the hot spot numbers on the image.

  1. Define a descriptive name for a profile. The name is used when starting a scan.
  2. Select the SNMP version (s) you want to use when scanning. v2 / v1 means that SNMP v1 is attempted when v2 fails
  3. Use this input box to enter a community name when using SNMPv1 / v2 or a user name when using SNMPv3.
  4. The minimum length of the authentication password is 8 characters. Leave this empty in the case of SNMPv1 / v2.
  5. The minimum length of the encryption password is 8 characters. Leave this empty in the case of SNMPv1 / v2.
  6. The scan style determines how a scan is performed. Each style starts with the SNMP protocol and switches to the second, third etc. protocol as long as no response is received. A found device can only be assigned with a standard Quantellium class if sufficient SNMP information can be retrieved. In all other cases an “unknown” device is assumed of which only the status is checked (no CPU, memory, interface load etc).
  7. You can use a filter setting to scan only for a specific class of devices based on the supported SNMP footprint.

A scan profile that was used to find devices for a card is automatically added as a card property. After this, the scan is repeated every 7 hours to find new devices and thus keep the map up-to-date. To prevent this, remove the scan line from the map properties (Select Maps | Modify from the main menu on the left and remove the scan line from the IP address ranges control).