Transit AA subscribers

A transit AA subscriber is an ISA local AA subscriber contained within a parent AA subscriber. There are two types of transit AA subs:

transit IP AA subscribers: defined by transit IP policy as one or more /32 IP addresses per sub
transit prefix AA subscribers: defined by transit prefix policy as one or more prefix IP addresses, used in business VPNs

A transit AA subscriber incorporates the following attributes:

name
IP address (one or more hosts)
app-profile (the divert/no divert and capacity cost setting of the app-profile does not affect transit AA subscribers because divert occurs only against the parent SAP)

When a SAP or spoke-SDP diverted to AA is configured with transit subs, that SAP or Spoke-SDP is referred to as the parent AA subscriber. Transit AA subscribers are supported on the parent SAPs or spoke SDPs that support AA divert.

Table: Transit AA subscribers support lists the Transit AA subscriber support.

Table: Transit AA subscribers support
Transit subscriber type	Epipe	VPLS	IES	VPRN	Ipipe
Transit IP	Y	N/A	Y	Y	N/A
Transit prefix	Y	Y	Y	Y	Y

The transit AA subscribers within a parent AA subscriber can be displayed using the show application-assurance group transit-ip-policy or transit-prefix-policy command.

For transit IP AA subscribers, all packets are accounted for when they are in the ISA records. Therefore, transit IP AA subscriber counts do not count against the parent SAP in reporting. For transit prefix AA subscriber deployments using the remote-site command, traffic for the remote transit subs are processed and counted for both the local parent and the remote transit subscriber.