In L2-Aware NAT with multiple nat-policies, the NAT resources are allocated in each pool associated with the subscriber. This NAT resource allocation is performed at the time when the ESM subscriber is instantiated. Each NAT resource allocation is followed by log generation.
For example, if RADIUS logging is enabled, one Alc-NAT-Port-Range VSA per NAT policy is included in the acct START/STOP message.
[Alc-Nat-Port-Range = "192.168.20.1 1024-1055 router base nat-pol-1"
Alc-Nat-Port-Range = "193.168.20.1 1024-1055 router base nat-pol-2".
Alc-Nat-Port-Range = "194.168.20.1 1024-1055 router base" nat-pol-3.]