08-05-2008 02:50 AM - edited 03-03-2019 11:01 PM
-nms is running on another core which is not part of a VRF
-a core switch is to be configured for netflow which is on a VRF instance
-normal ping is working from the NMS to the loopback of the core switch
-normal ping is not working from the core switch to the NMS. Ping VRF is working from core to NMS.
how do i configure netflow to use VRF to reach my NMS.
Thanks
08-05-2008 04:09 AM
Hello Celso,
try to use the following:
Router(config)# ip flow-export destination ip_address udp_port_number [vrf vrf_name]
see the link
this is for cat6500 with 12.2SXH
Hope to help
Giuseppe
08-05-2008 04:49 AM
make sense..ill check the os..
- any idea how my switch netflow config should be? ive config it without specifying any vrf actually
int vlan 20
ip flow ingress
ip flow-export source vlan 20
ip flow-export destination 1.1.1.1 2222
mls netflow
mls nde sender version 5
08-05-2008 12:56 PM
Hello Celso,
I'm not sure to have understood your needs.
I thought you wanted to reach the collector via a VRF, if you haven't any VRF defined in your switch you should omit the vrf option
If instead you have multiple VRFs on the core switch the right VRF name to be used is the same that allows you to ping the collector workstation.
Just to say something :
one thing is the source interface for export
Vlan 20 is fine.
Then, on all the L3 interfaces you want to monitor you need to add something like
ip route-cache flow
There are some specific commands if you want to monitor L2 switched traffic but this isn't possible on all platforms/OS combination.
Hope to help
Giuseppe
08-05-2008 08:53 PM
what i mean is i have the above current config. do i have to modify only the ip flow-export destination command and the rest will remain?
thanks
08-06-2008 07:07 AM
Hello Celso,
>> what i mean is i have the above current config. do i have to modify only the ip flow-export destination command and the rest will remain?
Yes I agree you just to need to change the export destination command
Hope to help
Giuseppe
08-06-2008 04:39 AM
any idea if this is supported in the newer ios? how will i know which ios supports this feature.
thanks
08-06-2008 07:25 AM
Hello Celso,
you can try to enter the command without typing enter at the end.
you can use feature navigator
www.cisco.com - support - tools - all tools
- feature navigator
you do a search by feature
type netflow
select Netflow Data Export (NDE)
select NDE for VRF interfaces (but this is for monitoring traffic on VRF interfaces)
I expect that this implies to be able to export in VRF
Hope to help
Giuseppe
08-09-2008 09:28 PM
from one of the docus ive found, this vrf option at destination is available on the 12.2(18)SXH. Mine is SXF
08-10-2008 05:04 AM
Hello Celso,
if you need it you should think to upgrade.
I would suggest 12.2(33)SXH because we updated from 12.2(18)SXH to that to support 10GE modules.
Hope to help
Giuseppe
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