Applicability
Table 6-1 compares the four different variations of IP Accounting and relates them to the fundamental questions that were discussed in Chapter 2.
Comparison of the Different IP Accounting Features
Criterion |
IP Accounting (Layer 3) |
IP Accounting ACL |
IP Accounting MAC Address |
IP Accounting Precedence |
What to collect (data collection details)? |
Total traffic (packets and bytes) per: IP source address IP destination address |
Total traffic (packets and bytes) per failed ACL: IP source address IP destination address ACL identifier |
Total traffic (packets and bytes) per: Source MAC address Destination MAC address |
Total traffic (packets and bytes) per: Eight different IP precedence values |
Where to collect? |
Edge or core, LAN or WAN (any interface type) |
Edge or core, LAN or WAN (any interface type) |
Edge: LAN interface types only |
Edge or core, LAN or WAN (any interface type) |
How to configure? |
CLI (scripts) |
CLI (scripts) |
CLI (scripts) |
CLI (scripts) |
How to collect? |
Pull model: CLI (scripts) SNMP |
Pull model: CLI (scripts) SNMP |
Pull model: CLI (scripts) SNMP |
Pull model: CLI (scripts) SNMP |
How to identify the user? |
IP address |
IP address |
MAC address |
Not available |
Use case example |
Network monitoring and planning, user monitoring, usage-based billing |
Security analysis |
Security analysis, network monitoring and planning, user monitoring, usage-based billing, peering agreements |
Network QoS monitoring and planning |
Additional details |
Only 32-bit SNMP counters Two different databases provide a global “snapshot” of the network |
Only 32-bit SNMP counters Two different databases provide a global “snapshot” of the network |
32-bit and 64-bit SNMP counters |
32-bit and 64-bit SNMP counters |