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Cisco Bug: CSCvs49104 - Network Discovery Policy rules are ignored if it uses network groups

Last Modified

Oct 04, 2020

Products (1)

  • Sourcefire Defense Center

Known Affected Releases

6.4.0 6.4.0.9 6.5.0 6.6.0

Description (partial)

Symptom:
Network Discovery Policy rules are ignored if Object-Group is selected under Networks

Conditions:
Issue affects all listed Firepower versions and with a Network Discovery Policy configured with network object-group(s).

For instance:

> Network Discovery policy configured with following Object-group under networks option:

Object-Group: Inside-Nets
Child Object 1: Inside-net-1: A.B.100.0/24
Child Object 2: Inside-net-2: A.B.101.0/24

With above configuration no single host entry was displayed under "Analysis > Network Map", "Analysis > Hosts". Similarly, "Discovery Statistics" and "Discovery Performance" under Overview was displaying no counters or events.

If the Network discovery policy is changed, and have the object-group "Inside-Nets" removed, and then the "Inside-net-1" network object added, FMC will start to display Network Discovery information, counts and performance events, for such subnet.
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