Question about Collection

Question

Hello!!
My boundary is based on AD Sites and my System Discovery is configured to discovery All Forest.
When i try create a Collection based on IP Subnet 10.12.0.0, the collection retrieves only 2 computers but the subnet have more than 200 computers.
The IP Subnet 10.12.0.0 is NOT registered in AD Sites and Services... this is a problem? How to solve?
My query in Collection:
select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.IPSubnets = "10.12.0.0"
Thanks!!
Atenciosamente Julio Araujo

Answer 1

If you've done your homework on your network, you should have a map of subnets to ranges so that you know what IPs are covered all around.
That being said, If you MUST use IPs, I'd use IP ranges instead.
If your environment is constructed simply, such as straight Class Bs or Cs, this is pretty easy with code such as this:
select
SMS_R_SYSTEM.ResourceID,
SMS_R_SYSTEM.ResourceType,
SMS_R_SYSTEM.Name,
SMS_R_SYSTEM.SMSUniqueIdentifier,
SMS_R_SYSTEM.ResourceDomainORWorkgroup,
SMS_R_SYSTEM.Client
from
SMS_R_System
WHERE
SMS_R_System.IPAddresses LIKE "10.100.25.%"
If your environment is supernetted, you may need to have a LIKE statement such as this:
WHERE
SMS_R_System.IPAddresses LIKE "10.100.7[2-9].%"
Lastly, if your environment is supernetted, AND runs across 10s ranges, such as 10.100.208.1 - 10.100.215.254, you'll need to adjust because of some SQL restrictions on these types of queries:
where
SMS_R_System.IPSubnets like '10.100.20[8-9].0'
or
SMS_R_System.IPSubnets like '10.100.21[0-5].0'
Hope this helps.