[Flow-tools] Setting up NetFlow on 6509

[Drew Weaver]

Be really careful with NetFlow on the 6500 it can easily crush the Supervisor if you're not careful.

From: flow-tools-bounces at list.splintered.net [mailto:flow-tools-bounces at list.splintered.net] On Behalf Of Travis Formoso
Sent: Monday, March 08, 2010 11:57 AM
To: Volk,Gregory B; flow-tools at list.splintered.net
Subject: RE: [Flow-tools] Setting up NetFlow on 6509

Greg,

We are not running IOS-XR, however this is almost the same and I can set this up.

With the loopback0 interface setup what are the commands I need to run, so that I am monitoring this device correctly with netflow? Would it be:

ip flow-export source loopback0
ip flow-export version 5
ip flow-export destination 172.20.200.50

Now I configure netflow for switched traffic:
mls nde sender version 5
mls flow ip interface-full
mls nde interface

On the interface (loopback0): (Not sure if this is needed for the loopback interface?)
ip route-cache flow

Thanks for the help.

________________________________
From: Volk,Gregory B [mailto:greg.volk at edwardjones.com]
Sent: Monday, March 08, 2010 11:50 AM
To: Travis Formoso; flow-tools at list.splintered.net
Subject: RE: [Flow-tools] Setting up NetFlow on 6509
>
>What should the loopback interface look like?
>

Here's what one of mine looks like, but it requires some config integration with OSPF, assuming you're running OSPF.


router#sho run int lo0
Building configuration...

Current configuration : 128 bytes
!
interface Loopback0
 description *** MANAGEMENT & OSPF ID ***
 ip address 10.130.25.1 255.255.255.255
 ip pim sparse-mode
end

router#


This doc from cisco... http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.0/interfaces/configuration/guide/hc3loop.html ...may help, but it's for IOS-XR.




________________________________
From: Travis Formoso [mailto:tformoso at Syracuse.com]
Sent: Monday, March 08, 2010 10:30 AM
To: Volk,Gregory B; flow-tools at list.splintered.net
Subject: RE: [Flow-tools] Setting up NetFlow on 6509
Hey Greg,

On the 6509 there is currently no loopback interface so I will need to set this up.

What should the loopback interface look like?

Also once I set it to this loopback I will not need to export to the VLAN's as this would monitor all the ports?

Thanks

________________________________
From: Volk,Gregory B [mailto:greg.volk at edwardjones.com]
Sent: Monday, March 08, 2010 11:19 AM
To: Travis Formoso; flow-tools at list.splintered.net
Subject: RE: [Flow-tools] Setting up NetFlow on 6509
Have you tried setting the source to a non-vlan (physical or loopback) interface like:

ip flow-export source Loopback0
I don't know if that will fix your issue, but I always source my netflow data from a loopback interface that is dedicated for management traffic.




 If you are not the intended recipient of this message (including attachments), or if you have received this message in error, immediately notify us and delete it and any attachments.  If you no longer wish to receive e-mail from Edward Jones, please send this request to messages at edwardjones.com.  You must include the e-mail address that you wish not to receive e-mail communications.  For important additional information related to this e-mail, visit www.edwardjones.com/US_email_disclosure<http://www.edwardjones.com/US_email_disclosure>





________________________________
From: flow-tools-bounces at list.splintered.net [mailto:flow-tools-bounces at list.splintered.net] On Behalf Of Travis Formoso
Sent: Monday, March 08, 2010 9:47 AM
To: flow-tools at list.splintered.net
Subject: [Flow-tools] Setting up NetFlow on 6509
Hello all,

I am trying to setup a NetFlow product on our 6509. We have a number of different VLAN's across our network and I think I would want to monitor those VLAN's and that should capture the traffic on the 6509 (correct me if I am wrong.) The way the product is licensed is by source (a source is a router or switch.) When I try to setup netflow each VLAN comes in as a different source and I would like it if I can use the 6509 as just once source. Here are the commands I am using to set this up.

in configuration mode:

ip flow-export source vlan10
ip flow-export version 5
ip flow-export destination 172.20.200.50

Now I configure netflow for switched traffic:
mls nde sender version 5
mls flow ip interface-full
mls nde interface

On the interface (vlan 10):
ip route-cache flow

After doing that I see that incoming traffic is being monitored by NetFlow, however as said that interface (VLAN) is coming in as a source, so if I configure another VLAN I now have 2 sources, but I would like to set this up so the 6509 is just one source, monitoring all the VLAN's.

I wanted to know if these commands are correct, if I should be monitoring the VLAN's and if anyone knows how to set this up as explained above with the 6509 as one source.

Thank you,

Travis

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.splintered.net/pipermail/flow-tools/attachments/20100308/bcdfdc81/attachment.htm