hi all..
i am trying to understand vrf-lite much better than I am now. Pleasea advice me..
Lets say I have this network :
R1(CE1)--172.16.1.0--R2--192.168.1.0--R3--172.16.2.0--R4(CE2)
From R2 there is also a link out to internet. Lets say this is a default route..
I have a customer (X) behind R1 who also have a office behind R4..
I am running ospf on R2 between some other routers in that core.
This is where I want to use vrf-lite.. I want to be able to make another routing process on R2 that only have routes that is for customer X locations. This are privat ip ranges, so I dont want them in to my ordernary routing table.
I can do this makeing the routing process attached to vrf X, right?
Then, this is the config :
R2
interface g0/1
ip vrf forwarding X
describtion to CE1
interface g0/2
ip vrf forwarding X
describtion to R3
interface g0/3
ip vrf forwarding X
describtion to Internett
(do I need the ip vrf forwarding X command on g0/3 so that customer X are able to reach the internet??)
ip vrf X
rd 1:1
route-target export 1:1
route-target import 1:1
router ospf 2 vrf X
log-adjacency-changes
capability vrf-lite
network 172.16.0.0 0.0.255.255 area 0
default-information originate always
router ospf 1
log-adjacency-changes
network 192.168.0.0 0.0.255.255 are 0
default-information originate always
ip route 0.0.0.0 0.0.0.0 10.0.0.1
R3
interface g0/1
ip vrf forwarding X
describtion to CE2
interface g0/2
ip vrf forwarding X
describtion to R2
ip vrf X
rd 1:1
route-target export 1:1
route-target import 1:1
router ospf 2 vrf X
log-adjacency-changes
capability vrf-lite
network 172.16.0.0 0.0.255.255 area 0
default-information originate always
router ospf 1
log-adjacency-changes
network 192.168.0.0 0.0.255.255 are 0
default-information originate always
So, what I wonder is several things. With this config, will an user that are on the internet be able to reach a server in location at customer X? since this is not taged with vrf X?.. If not what do I need to do so that anybody can reach a web server in customer X either location.
Will customer X also be able to reach internet?, if not what do i need to do?..
CE 1 only have a default route to R2, but CE2 have an ospf process with R3. Do this process need to be both routing processes from R3(both ospf vrf X and the ordernary)?
I hope somebody can help me understand this a litle better, I have tried to read some about this, but are not able to get the full picture..
Thanks
JP
