new vrf with ospf as routing protocol

laura_pineiro

Hello,

I have four sites I will connect through an MPLS network. All the sites are using ICX 7450 routers. They don't have any vrf configured, so all the interfaces and static routing is done into the default-vrf.
I know I need at least a reboot in order to change the default values to give the space for the routing table in the new VRF. My question is:
Is service disruptive the VRF configuration (besides the reboot)?

I will configured an OSPF instance for this VRF, and I think that if I don't assign any interface L3 to the OSPF or the VRF, it shouldn't cause any troubles. Is that right?

Here's the configuration I'm planning to do (this is one of the routers)

!Configure VRF-related system-max values (default FastIron configuration does not allow space for VRF routing tables)!

system-max ip-route-vrf
reload

!Configure VRF instances

vrf new-vrf
exit-vrf

!Configure a Route Distinguisher (RD) for new VRF instance

vrf new-vrf
rd 1:91
ip router-id 172.25.131.6
exit-vrf

!Configure an IPv4 or IPv6 Address Family (AF) for new VRF instance

vrf new-vrf
address-family ipv4
exit-address-family
exit-vrf


!Configure routing protocols for new Multi-VRF instance

router ospf vrf new-vrf
area 0.0.0.0
log adjacency


!Assign VRF instances to Layer 3 interfaces
!NOTE: When a VRF instance is assigned to an interface, all IP addresses are deleted, and will trigger cache deletion, route deletion and associated cleanup. You must re-configure the IP address and interface properties after assigning a VRF instance to the L3 interface. 

interface loopback 2
vrf forwarding new-vrf
ip address 172.25.131.6/32
end

Do I missing something there?

Thanks in advance for your help!

unknown

Overall, it looks close to complete, but you may not have shown the entire configuration...   Did it not work?

Have you checked your neighborships etc.?

On our configurations, we had to set the memory up as follows to create VRF statements.  Not saying your above statements don't work:

system-max ip-route 15168
system-max ip6-route-default-vrf 64

The above requires a reload.

Ultimately, everything looks good with regard to your configuration, but please confirm you have an "area 0" somewhere?

***

Presumably you have another network subnet used as your uplink network, and it is a physical interface(vs that loopback).  Where is that?  You cannot uplink this based on a loopback alone.

Note:  The above is often a VRI (Virtual Routing Interface) such as interface ve xx.  These are very common on multi-layer switches and generally serve as the layer-3 interfaces.  (i.e. they get assigned an IP/mask).


ip ospf area