Cisco Nexus 7000 Series Configuration Manual page 402

Guidelines and Limitations for NetFlow
• F2, F2e, F3, and M3 Series modules support only sampled NetFlow.
• Beginning with Cisco NX-OS Release 6.1(2), sampled NetFlow is supported on F2 and F2e Series
modules.
• Beginning with Cisco NX-OS Release 6.2(6), sampled NetFlow is supported on F3 Series modules.
• Egress NetFlow is not supported on F2, F2e modules, and on any mixed VDC the modules are present
in.
• Beginning from Cisco NX-OS Release 7.2(0)D1(1), Egress NetFlow is supported on F3 modules.
• Beginning from Cisco NX-OS Release 7.2(1)D1(1), Sub-interfaces are supported on F2, F2e, and F3
series modules.
• Beginning from Cisco NX-OS Release 7.3(0)DX(1), ingress and egress NetFlow is supported on M3
Series modules.
• By default, you cannot use ingress NetFlow sampling and DHCP relay together on the same interface.
However, beginning with Cisco NX-OS Release 6.2(2), you can override the default and configure these
two features on the same interface using the hardware access-list resource feature bank-mapping
command, after you have entered the necessary commands to enable each of these features individually.
For more information on this command, see the Configuring IP ACLs chapter of the Cisco Nexus 7000
Series NX-OS Security Configuration Guide.
• Beginning with Cisco NX-OS Release 6.2(2), full NetFlow is supported on the Cisco NetFlow Generation
Appliance (NGA) through SPAN. Sampled NetFlow is supported on the NGA through sampled SPAN.
NetFlow has the following limitations for mixed VDCs with both M1, M2 Series and F2, F2e, F3, and M3
Series modules:
• A VDC is classified as a mixed VDC only when it contains at least one F2e Series port or at least one
F3 Series port.
• Layer 2 NetFlow—Sampled and full NetFlow is supported on the M1 and M2 Series module ports, and
only sampled NetFlow is supported on the F2e, F3 and M3 Series module ports.
• Layer 3 NetFlow—Sampled and full NetFlow is supported on the M1 and M2 Series module ports. The
F2 and F2e Series module ports come up in proxy mode and, therefore, cannot be configured as Layer
3 ports. Thus, Layer 3 NetFlow and subinterface NetFlow do not work with these ports. Sampled NetFlow
is supported on F3 and M3 Series module ports.
• VLANs, SVIs, and port channels—Only sampled NetFlow is supported on VLANs, SVIs, and port
channels for both the M1 and M2 Series and F2e, F3, and M3 Series modules.
• Subinterfaces (physical/port channels)—NetFlow configuration is supported on the F2, F2e, F3, and
M3 Series module interfaces.
• Dynamic configuration change is not available in the mixed VDC for the policies applied on the M1
and M2 Series and F2e, F3, and M3 Series modules.
• Flow timeout applies only to the F2e and F3 Series modules. Other NetFlow timers apply to the M1 and
M2 Series modules. Only active and inactive timeouts are applicable for M3 Series modules.
• Egress NetFlow is completely blocked in VDCs that contain both M Series and F2e and F3 Series
modules.
Guidelines and Limitations Specific to NetFlow on CoPP Interface Support feature:
Cisco Nexus 7000 Series NX-OS System Management Configuration Guide
374
Configuring NetFlow