Vrf configuration and verification on nexus 7000. Yes, do you know how to configure and verify VRF on Cisco Nexus 7000 Series?

1. <Tags> VRF Configuration, VRF Configuration Verification on Nexus 7000, Cisco
Nexus 7000, Cisco NX-OS
VRF Configuration and Verification on Nexus 7000
The NX-OS supports Virtual Routing and Forwarding (VRF) instances that
define unique L3 routing domains. Each VRF contains its own Address Space,
Unicast, and Multicast routing tables that make decisions independent from
each other. The NX-OS does not allow internal route-leaking between VRF
instances today. All unicast and multicast routing protocols support VRFs.
When you configure a routing protocol in a VRF, you set routing parameters
for the VRF that are independent of routing parameters in another VRF for
the same routing protocol instance. By default, Cisco NX-OS uses the VRF of
the incoming interface to select which routing table to use for a route lookup.
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.
Cisco NX-OS can virtualize each VDC to support virtual routing and
forwarding instances (VRFs). You can configure multiple VRFs in a VDC. Each
VRF contains a separate address space with unicast and multicast route tables
for IPv4 and IPv6 and makes routing decisions independent of any other VRF.
A VRF name is local to a VDC, so you can configure two VRFs with the same
name if the VRFs exist in different VDCs.
Management VRF and Default VRF
Each router has a management VRF and a default VRF:
Management VRF
 The management VRF is for management purposes only.
 Only the mgmt 0 interface can be in the management VRF.
 The mgmt 0 interface cannot be assigned to another VRF.
 The mgmt 0 interface is shared among multiple VDCs.
 No routing protocols can run in the management VRF (static only).
Default VRF
 All Layer 3 interfaces exist in the default VRF until they are assigned to
another VRF.
 Routing protocols run in the default VRF context unless another VRF
context is specified.

2.  The default VRF uses the default routing context for all show
commands.
 The default VRF is similar to the global routing table concept in Cisco
IOS.
Limitations for VRF
VRFs have the following configuration guidelines and limitations:
• When you make an interface a member of an existing VRF, Cisco NX-OS
removes all Layer 3 configurations. You should configure all Layer 3
parameters after adding an interface to a VRF.
• You should add the mgmt0 interface to the management VRF and configure
the mgmt0 IP address and other parameters after you add it to the
management VRF.
• If you configure an interface for a VRF before the VRF exists, the interface
is operationally down until you create the VRF.
• Cisco NX-OS creates the default and management VRFs by default. You
should make the mgmt0 interface a member of the management VRF.
• The write erase boot command does not remove the management VRF
configurations. You must use the write erase command and then the write
erase boot command.
VRF Configuration
Create the VRF Context:
n7000(config)# vrf context Test-VRF
n7000(config-vrf)# ip ?
Assign Interfaces to the VRF:
n7000(config-router-vrf)# interface ethernet 1/13
n7000(config-if)# vrf member Test-VRF
n7000(config-if)# ip address 10.142.1.1 255.255.255.0

3. n7000(config-if)# interface loopback 10
n7000(config-if)# vrf member Test-VRF
n7000(config-if)# ip address 10.142.10.1 255.255.255.0
Create the VRF Routing Process:
n7000(config-vrf)# feature ospf
n7000(config)# router ospf 10
n7000(config-router)# vrf Test-VRF
n7000(config-router-vrf)# router-id 10.142.10.1
VRF Verification
Verify VRF Context:
n7000# show vrf
VRF-Name VRF-ID State Reason
Test-VRF 3 Up --
default 1 Up --
management 2 Up --
Verify VRF Interfaces:
n7000# show vrf interface
Interface VRF-Name VRF-
ID
mgmt0 management
2
loopback10 Test-
VRF 3

4. Ethernet1/1 default
1
Ethernet1/2 default
1
<Text Omitted>
Ethernet1/10 default
1
Ethernet1/11 default
1
Ethernet1/12 default
1
Ethernet1/13 Test-
VRF 3
Verify VRF Routes:
n7000# show ip route vrf Test-VRF
IP Route Table for VRF "Test-VRF"
'*' denotes best ucast next-hop '**' denotes best mcast
next-hop
'[x/y]' denotes [preference/metric]
0.0.0.0/32, 1 ucast next-hops, 0 mcast next-hops
*via Null0, [220/0], 00:04:17, local, discard
159.142.1.0/24, 1 ucast next-hops, 0 mcast next-hops, attached
*via 159.142.1.1, Ethernet1/13, [0/0], 00:01:08, direct
159.142.1.0/32, 1 ucast next-hops, 0 mcast next-hops, attached
Related Information
PVLAN Implementation in Nexus for Traffic Management
vPC Best Practices for Nexus 7000 and 5000
…

5. From https://supportforums.cisco.com/document/133711/vrf-configuration-
and-verification-nexus-7000