What are as-set objects?

To specify routing policies, it is often useful to define sets of objects. An as-set is a group of autonomous system numbers linked to a base autonomous system. Its definition may include direct or indirect references to other as-set objects. In LACNIC's IRR, the base autonomous system is used as the identifying prefix for the as-set.

The object's attributes are described below:

• as-set: The value of this attribute represents the name of the as-set object. In LACNIC's IRR, it includes the name of the Autonomous System followed by “:” and a description beginning with “AS-”.

For example: as-set: AS28000:AS-Clients

• descr: The value of this attribute is a short description of the maintaining entity. In LACNIC's IRR, the default value is the name of the organization.
• members: This attribute lists the members of the set. It can be either a list of AS Numbers or other as-set names.
• remarks: A comment or an explanation related to this object.
• mnt-by: The value of this attribute represents the maintainer of the object.
• changed: This attribute shows the email address of the person who modified the object for the last time and the date of the modification. The attribute has the following syntax:

changed: <email-address> <YYYYMMDD>

For example: changed: [e-mail] 19900401

• source: This attribute specifies the registry where the object is registered.

Example of an as-set object:

as-set: AS6057:AS-Clients
descr: National Telecommunications Administration
members: AS26384, AS54321
members: AS6057:AS-MediumSizeClients, AS6057:AS-LargeClients
remarks: as-set for all clients
mnt-by: MNT-UY-ANTA-LACNIC
changed: [e-mail] 20191105
source: LACNIC