Applicability

Table 8-2 relates the BGP Policy Accounting properties to the fundamental questions discussed in Chapter 2.

Table 8-2. Comparison of the Different BGP Policy Accounting Features
Criterion	BGP Policy Accounting
What to collect (data collection details)?	Total traffic (packets and bytes): Per (sub)interface For ingress or egress For source or destination lookup criteria
Where to collect?	Edge of the network, on the BGP-enabled routers
How to configure?	CLI commands or scripts
How to collect?	Pull model: CLI commands or scripts SNMP
How to identify the user?	With the (sub)interface, because the counters are distinctive per (sub)interface
Use case example	Destination-sensitive billing Source-sensitive billing Network-wide capacity planning Traffic profiling and engineering Peering and transit agreements
Additional details	64-bit SNMP countersNumber of buckets: 8 or 64, globally defined, depending on the platforms and Cisco IOS version