#6732 - Add documentation

docs/core-functionality/ipam.md

@@ -18,6 +18,10 @@
 {!models/ipam/vrf.md!}
 {!models/ipam/routetarget.md!}
 
-__
+---
 
 {!models/ipam/fhrpgroup.md!}
+
+---
+
+{!models/ipam/asn.md!}

docs/models/ipam/asn.md

@@ -0,0 +1,15 @@
+# ASN
+
+ASN is short for Autonomous System Number.  This identifier is used in the BGP protocol to identify which "autonomous system" a particular prefix is originating and transiting through.
+
+The AS number model within NetBox allows you to model some of this real-world relationship.
+
+Within NetBox:
+
+* AS numbers are globally unique
+* Each AS number must be associated with a RIR (ARIN, RFC 6996, etc)
+* Each AS number can be associated with many different sites
+* Each site can have many different AS numbers
+* Each AS number can be assigned to a single tenant
+
+