Combining Reachability And Filtering; Licensing Requirements For Vrfs - Cisco Nexus 7000 Series Configuration Manual

Chapter 14 Configuring Layer 3 Virtualization
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .
Filtering
Filtering allows you to limit the type of information that goes to a VRF-aware service based on the VRF.
For example, you can configure a syslog server to support a particular VRF.
syslog servers with each server supporting one VRF. syslog server A is configured in VRF Red, so Cisco
NX-OS sends only system messages generated in VRF Red to syslog server A.
Figure 14-4
Router A

Combining Reachability and Filtering

You can combine reachability and filtering for VRF-aware services. You configure the VRF that Cisco
NX-OS uses to connect to that service as well as the VRF that the service supports. If you configure a
service in the default VRF, you can optionally configure the service to support all VRFs.
Figure 14-5
SNMP server to support only the SNMP notifications from VRF Red, for example.
Figure 14-5
SNMP Server
192.0.2.1

Licensing Requirements for VRFs

The following table shows the licensing requirements for this feature:
Product License Requirement
NX-OS VRFs require no license. Any feature not included in a license package is bundled with the Cisco NX-OS
system images and is provided at no extra charge to you. For a complete explanation of the NX-OS licensing
scheme, see the Cisco NX-OS Licensing Guide.
OL-20002-02
Service VRF Filtering
Syslog Server A
Ethernet 2/1
VRF Red
Ethernet 2/2
VRF Blue
Syslog Server B
shows an SNMP server that is reachable on the management VRF. You can configure the
Service VRF Reachability Filtering
Router A
mgmt0
VRF management
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
Router B
Ethernet 2/1
VRF Red
Ethernet 2/2
VRF Blue
Router C
Licensing Requirements for VRFs
Figure 14-4 shows two
14-5