Catalyst 9400交换机支持哪个版本的NETFLOW，怎么配置

[Yanyan_]

可以提供更加完整的配置步骤吗？请对每条命令做个解释说明，谢谢！

默认只能使用netflow 9吗？是否可以配置其他版本的？怎么配置？

[Rps-Cheers · Accepted solution]

For basic NetFlow v5 or v9 on Catalyst switches, any license will do. If you want full support for Flexible NetFlow, you’ll need either a DNA Essentials or DNA Advantage license. 

you can refer to :

https://www.solarwinds.com/assets/solarwinds/swresources/tech-tip/configure_netflow_on_cisco_routers.pdf

[Yanyan_]

或许Catalyst 9407不支持netflow-v5，我没有找到怎么配置

[Rps-Cheers · Accepted solution]

可以确认一下版本和license呢，查询也显示netflowv5 export protocol是有镜像可以支持的。

[Yanyan_]

谢谢！但是我还想请教一下，红色方框处，写在record里面的input和output有什么区别。

[Rps-Cheers]

match interface {input | output}

Specifies a match to the interface fields. The following command options are available: input—Matches to the input interface. output—Matches to the output interface.

collect interface {input | output}

Collects the fields from the input or output interface.

The “match” fields are the “key” fields. They are used to determine the uniqueness of the flow. The “collect” fields are just extra info that to include to provide more detail to the collector for reporting and analysis.This seems to be the fixed format.

If you apply a flow monitor in the input direction: 
 • Use the match keyword and use the input interface as a key field. 
 • Use the collect keyword and use the output interface as a collect field. This field will be present in the exported records but with a value of 0. 

• If you apply a flow monitor in the output direction: 
 •  Use the match keyword and use the output interface as a key field. 
 • Use the collect keyword and use the input interface as a collect field. This field will be present in the exported records but with a value of 0.

  https://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3se/consolidated_guide/b_consolidated_3850_3se_cg_chapter_011010.html

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-8/configuration_guide/nmgmt/b_168_nmgmt_9400_cg/b_168_nmgmt_9400_cg_chapter_0111.html