Nexus 7000 - "show ip route" command output

[muthumohan]

Dear All,

The "show ip route" commad output is very different from IOS. I did not find any Cisco document that explains all the fields of this output.

What is ubest/mbest? I guess it is unicast best and multicast best, but why nexus is showing both unicast and multicast in the "show ip route" ?

Why there are many /32 routes marked as direct and local? What does direct and local mean in the output?

Any help/pointer is highly appreciated.

Another question...

When configuring routing protocol in VRF, what is the recommended way? 1 routing instance for multiple VRF or 1 routing instance per VRF? What are the pros and cons of each?

REgards,

Mohan

[sbhadrav@cisco.com]

The unicast RIB and FIB support virtual routing and forwarding (VRF) instances. VRF exists within VDCs. By default, Cisco NX-OS places you in the default VDC and default VRF unless you specifically configure another VDC and VRF.
The following example shows how to add an interface to the VRF:

switch# configure terminal

switch(config)# interface ethernet 1/2

switch(config-if)# vrf member RemoteOfficeVRF

switch(config-if)# ip address 192.0.2.1/16

switch(config-if)# copy running-config startup-config
You can associate a routing protocol with one or more VRFs. See the appropriate chapter for information on how to configure VRFs for the routing protocol. This section uses OSPFv2 as an example protocol for the detailed configuration steps.