Hello Community,
Can someone please let me know if NPM supports Netflow Version 9? If yes, can someone show me how to select configuring NF9 using NPM.
Cheers
Carlton
I understand that NTA supports Netflow v9 without any configuration. I may need correction here as we're not using v9.
All you should need to do is make sure that the device you're configuring is exporting using the correct netflow version, e.g. for Cisco:
ip flow-export source <interface>
ip flow-export version 9
ip flow-export destination <ntaipaddress> <portnumber>
plus any other template options
NTA should then recognise the netflow version accordingly. Obviously said device needs to be monitored in NPM and added as a netflow source.
Hi Martin,
Thanks for responding.
I'm trying to use NPM to configure the interfaces with ingress or egress. However, when I select the option the commands don't appear on the interfaces...
Any thoughts?
I don't quite follow, sorry. Could you send over a couple of screenshots to illustrate what you're doing?
OK, give me a sec.
So Martin,
From the screen shot you can see I have checked all the interfaces that I want Netflow configured on. However, when I click on submit and then telnet into the routers none of the interfaces are configured with ingress/egress etc....
Sorry if I've got the wrong end of the stick here, but NPM/NTA won't configure netflow on the router. You need to add this to the router's configuration manually prior to selecting interfaces for monitoring.
You're only selecting the interfaces you want to receive netflow stats for in NTA, you're not affecting any configuration changes on the router itself.
Make sure the interfaces you want to monitor have ip flow ingress stated in the configuration in addition to all the other flow-export commands.
NCM is the only platform that can be used to deploy configuration changes.
I was afraid you we're going to say that :-(
Sorry it's not better news. Can you not add the configuration to the router manually?
No worries mate..
Looks like I have no choice but to add it manually.... :-(
I do believe in later releases for cisco devices at least that we will have the capability via NTA
Have a look here for some sample Netflow configs:
Netflow Lab
or here is a generic config for you:
!
ip flow-export source [Interface]
ip flow-export version 5
ip flow-export destination [PollerIP] 2055
ip flow-cache timeout active 1
ip flow-cache timeout inactive 15
snmp-server ifindex persist
Interface FastEthernet0/0
Ip flow ingress
Interface FastEthernet0/1
HTH
Stuart
Hi Stuart,
Is a generic way of configuring multiple interfaces on multiple routers in one shot?
No, a generic config is one that will work in many situations, however may need modification in certain circumstances. If you want to apply the config to many devices, it would be either a manual task, or require an additional product, such as NCM.
In NCM you would create a "configuration snippet" and push it out to your devices.
