Discovery Spaces is the starting point of Lumeta indexing. A collector performs discovery operations on the scope you provide in the Discovery Space list. The CIDR blocks and IP addresses you list here must belong to your network zone and must be a member of the space you intend to monitor.
Reach out to your solution architect if you need help in defining your discovery space.
When you select a collector, and then click Discovery Spaces tab, the Collector's Discovery Spaces display. These are further delineated:
- Target - Collection starts with your Target list. When an Lumeta collector encounters IPs or CIDRs in your discovery space and on your Target list, it runs discovery on them in accordance with the instructions set on that collector. When Lumeta encounters IPs or CIDRs included in the Target list, it interrogates them.
- Avoid - IPs and CIDR ranges on this list of CIDRs are not targeted during active discovery. Network space that should not be interrogated (e.g., perhaps because it is network space that belongs to a business partner or affiliate) is included on the Avoid list. Space that is considered sensitive, contains restricted data, or for whatever reason must not be interrogated, is recorded to the Avoid list.
- Stop - Path Discovery aborts a trace when a hop responds with an IP included on this discovery space. The Stop list is only referenced when an Lumeta collector is performing Path Discovery. The stop list is your network's perimeter/edge.
At the collector level, scope coordinates are located in the Discovery Spaces tab. Collectors go to their Targets, skip over their Avoids, and go one hop past their Stops. Think of IP/CIDR lists as "coordinates" within which discovery activities take place. You can expect the number of these IP and CIDR coordinates to increase quickly once discovery begins.
To prepare for discovery, define your scope of interest.
- Select a zone, a collector, and then the Discovery Spaces tab.
The IP/CIDR coordinates for your selected collector only display. - Ensure that the default Target tab is active, and then select Add to input manually or Upload to import a text file of the information.
The requirements for Target list entries are as follows:- Flat ASCII format, one CIDR block per line followed by a text label, separated by a space
- A text label, with a maximum of 50 characters. Labels may contain letters, numbers and underscores.
- Single IP addresses are permitted; list these as a /32 CIDR block (e.g. 10.4.65.7/32)
- Overlapping CIDR blocks are permitted (e.g. including 10.10.0.0/16 and 10.10.24.0/24)
Example: 10.210.0.0/16 North America
10.230.0.0/16 EMEA
10.250.0.0/24 Australia - Click the Avoid tab and then select Add to input manually or Upload to import a text file of the information.
The requirements for Avoid list entries are as follows:- A text label, with a maximum of 50 characters. Labels may contain letters, numbers and underscores.
- Single IP addresses are permitted; list these as a /32 CIDR block (e.g. 10.4.65.7/32)
- CIDRs in this list may overlap fully or partially with the Target list.
Example: 10.10.0.0/24 Servers
10.30.0.0/28 Partner Network
10.50.0.0/30 Customer NetworkClick the Stop tab and then select Add to input manually or Upload to import a text file of the information.
The requirements for Stop list entries are as follows:- A text label, with a maximum of 50 characters. Labels may contain letters, numbers and underscores.
- Single IP addresses are required; list these as IP addresses, NOT in CIDR notation
(e.g. 10.4.65.7) - IP addresses in this list may be contained within the Target list.
Example: 10.10.10.10 Gateway to Servers
10.30.40.50 Partner Gateway
10.50.60.70 Customer Gateway - Input the coordinates of the selected collector's target discovery space.
For each of the three lists, enter IP and/or CIDR information manually by typing or pasting it in, or import text files containing the information. - In the CIDR field, type or paste one or more addresses, delimited by line breaks. Or, if you are uploading, import the same information in the form of a TXT file.
Sample entries:
10.7.0.0/24
10.7.50.0/24
10.7.96.0/19
10.7.100.0/24
10.8.0.0/24
10.100.10.0/24
10.100.50.0/24
10.200.0.0/24
10.201.0.0/24
65.198.68.0/24
65.246.240.0/21
172.18.1.0/24 - Click Create to save your entries to the active list.
The results display in the Discovery Spaces grid. Notice that the active list type button --Target, Avoid, or Stop–indicates which type of list is displayed.
- Select a zone, a collector, and then the Discovery Spaces tab.
You've successfully defined your discovery zone.