Cisco Cisco IOS Software Release 12.0(15)S
NetFlow ToS-Based Router Aggregation
Feature Overview
6
Cisco IOS Release 12.0(15)S, 12.0(16)ST, 12.2(14)S, and 12.2(4)T
ToS: Type of service byte.
Reserved: Zero field.
Source Port: Source UDP or TCP port number.
Destination Port: Destination UDP or TCP port number.
Source Interface: SNMP index of the interface the packets arrived on.
Destination Interface: SNMP index of the interface the packets went out.
Prefix-ToS Aggregation Scheme
The Prefix-ToS aggregation scheme groups together flows with common source prefix, source mask,
destination prefix, destination mask, source BGP autonomous system, destination BGP autonomous
system, input interface, output interface and ToS byte. The aggregated NetFlow Export record reports
the following:
destination prefix, destination mask, source BGP autonomous system, destination BGP autonomous
system, input interface, output interface and ToS byte. The aggregated NetFlow Export record reports
the following:
•
Source prefix
•
Source prefix mask
•
Destination prefix
•
Destination prefix mask
•
Source autonomous system
•
Destination autonomous system
•
Source interface
•
Destination interface
•
ToS byte
•
Number of flows summarized by the aggregated record
•
Number of bytes summarized by this aggregated record
•
Number of packets summarized by this aggregation record
•
Starting and ending time stamps
This aggregation scheme is particularly useful for generating data with which to examine the sources
and destinations of network traffic passing through a NetFlow-enabled device. Figure 4 displays the
Prefix-ToS aggregation export record format and a list follows describing the data.
and destinations of network traffic passing through a NetFlow-enabled device. Figure 4 displays the
Prefix-ToS aggregation export record format and a list follows describing the data.