Cisco Systems WSC4500X16SFP Manual De Usuario

38-13

Software Configuration Guide—Release 12.2(25)SG

OL-7659-03

Chapter 38 Configuring NetFlow

NetFlow Statistics Collection Configuration Example

The following example shows how to modify the configuration to enable NetFlow switching. It also
shows how to export the flow statistics for further processing to UDP port 9991 on a workstation with
the IP address of 40.0.0.2. In this example, existing NetFlow Statistics are cleared, thereby ensuring that
the show ip cache flow command displays an accurate summary of the NetFlow switching statistics:

Switch# config t

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)# ip route-cache flow

Switch(config)# ip flow-export destination 40.0.0.2 9991

Switch(config)# ip flow-export version 5

Switch(config)# end

Switch# show ip flow export

Flow export is enabled

Exporting flows to 40.0.0.2 (9991)

Exporting using source IP address 40.0.0.1

Version 5 flow records

2 flows exported in 1 udp datagrams

0 flows failed due to lack of export packet

0 export packets were sent up to process level

0 export packets were dropped due to no fib

0 export packets were dropped due to adjacency issues

0 export packets were dropped due to fragmentation failures

0 export packets were dropped due to encapsulation fixup failures

Switch#

Switch# show ip cache flow

IP Flow Switching Cache, 17826816 bytes

69 active, 262075 inactive, 15087 added

4293455 ager polls, 0 flow alloc failures

Active flows timeout in 30 minutes

Inactive flows timeout in 15 seconds

IP Sub Flow Cache, 1081480 bytes

0 active, 65536 inactive, 0 added, 0 added to flow

0 alloc failures, 0 force free

1 chunk, 1 chunk added

last clearing of statistics never

Protocol Total Flows Packets Bytes Packets Active(Sec) Idle(Sec)

-------- Flows /Sec /Flow /Pkt /Sec /Flow /Flow

TCP-Telnet 28 0.0 167 40 0.0 20.9 11.9

TCP-other 185 0.0 2 48 0.0 6.2 15.4

UDP-DNS 4 0.0 1 61 0.0 0.0 15.5

UDP-other 13466 0.0 3396586 46 91831.3 139.3 15.9

ICMP 97 0.0 2 95 0.0 2.3 15.4

IGMP 1 0.0 2 40 0.0 0.9 15.1

IP-other 1120 0.0 38890838 46 87453.0 1354.5 24.0

Total: 14901 0.0 5992629 46 179284.3 227.8 16.5

SrcIf SrcIPaddress DstIf DstIPaddress Pr SrcP DstP Pkts

Gi6/2 30.20.1.18 Gi6/1 30.10.1.18 11 4001 4001 537K

Gi6/2 30.20.1.19 Gi6/1 30.10.1.19 11 4001 4001 537K

Gi6/2 30.20.1.16 Gi6/1 30.10.1.16 11 4001 4001 537K

Gi6/2 30.20.1.17 Gi6/1 30.10.1.17 11 4001 4001 537K

Gi6/2 30.20.1.20 Gi6/1 30.10.1.20 11 4001 4001 537K