Exporting Netflow Statistics; Managing Netflow Statistics Collection; Configuring An Aggregation Cache - Cisco 4500M Software Manual

Configuring NetFlow Statistics Collection

Exporting NetFlow Statistics

To configure the switch to export NetFlow Statistics to a workstation when a flow expires, perform one
of these tasks:
Command
Switch(config)# ip flow-export destination
| }
ip-address udp-port
Switch(config)# ip flow-export version
{1 | {5 [origin-as | peer-as]}}
Switch(config)# ip flow-export source

Managing NetFlow Statistics Collection

You can display and clear NetFlow Statistics, including IP flow switching cache information and flow
information, such as the protocol, total flow, flows per second, and so forth. You can also use the
resulting information to obtain information about your switch traffic.
To manage NetFlow switching statistics, perform one or both of following tasks:
Command
Switch# show ip cache flow
Switch# clear ip flow stats

Configuring an Aggregation Cache

Aggregation of NetFlow Statistics is typically performed by NetFlow collection tools on management
workstations. By extending this support to the Catalyst 4500 series switch, you can do the following:
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•
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Software Configuration Guide—Release 12.2(25)EW
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{
hostname
<
interface
Reduce the required bandwidth between the switch and workstations, because fewer NDE packets
are exported.
Reduce the number of collection workstations required.
Provide visibility to aggregated flow statistics at the CLI.
Chapter 40
Purpose
(Required) Configures the switch to export NetFlow cache
entries to a specific destination (for example, a workstation).
You can specify multiple destinations.
Note
(Optional) Configures the switch to export NetFlow cache
entries to a workstation if you are using receiving software
that requires version 1 or 5. Version 1 is the default.
origin-as causes NetFlow to determine the origin BGP
autonomous system of both the source and the destination
hosts of the flow.
peer-as causes NetFlow to determine the peer BGP
autonomous system of both the input and output interfaces of
the flow.
>
(Optional) Specifies an interface whose IP address will be
used as the source IP address in the IP header of the NetFlow
Data Export (NDE) packet. Default is the NDE output
interface.
Purpose
Displays the NetFlow switching statistics.
Clears the NetFlow switching statistics.
Configuring NetFlow Statistics Collection
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