Re: MPLS VRF - Lite and Ideas

Hi,

Believe me or not, but for me VRF lite is only 3-commands feature:
#ip vrf <name>
#rd <asn:nn>
#ip vrf forwarding <name>

Rest of commands only support prefixes delivery in my opinion.
Take a look at the following config and decide if this is VRF Lite or not :)

Topo: R1 ==== R2 (two links, each in separate VRF)

R1 config:

ip vrf CUST1
 rd 1:1
!
ip vrf CUST2
 rd 2:2

interface Loopback0
 ip vrf forwarding CUST1
 ip address 1.1.1.1 255.255.255.0
!
interface Loopback1
 ip vrf forwarding CUST2
 ip address 11.11.11.11 255.255.255.0
!
interface FastEthernet0/0
 ip vrf forwarding CUST1
 ip address 10.1.12.1 255.255.255.0
!
interface FastEthernet0/1
 ip vrf forwarding CUST2
 ip address 10.1.21.1 255.255.255.0
!
router rip
 version 2
 no auto-summary
 !
 address-family ipv4 vrf CUST2
  network 10.0.0.0
  network 11.0.0.0
  no auto-summary
 exit-address-family
 !
 address-family ipv4 vrf CUST1
  network 1.0.0.0
  network 10.0.0.0
  no auto-summary
 exit-address-family
!

R2 config:

ip vrf CUST1
 rd 1:1
!
ip vrf CUST2
 rd 2:2
!
interface Loopback0
 ip vrf forwarding CUST1
 ip address 2.2.2.2 255.255.255.0
!
interface Loopback1
 ip vrf forwarding CUST2
 ip address 22.22.22.22 255.255.255.0
!
interface FastEthernet0/0
 ip vrf forwarding CUST1
 ip address 10.1.12.2 255.255.255.0
!
interface FastEthernet0/1
 ip vrf forwarding CUST2
 ip address 10.1.21.2 255.255.255.0
!
router rip
 version 2
 no auto-summary
 !
 address-family ipv4 vrf CUST2
  network 10.0.0.0
  network 22.0.0.0
  no auto-summary
 exit-address-family
 !
 address-family ipv4 vrf CUST1
  network 2.0.0.0
  network 10.0.0.0
  no auto-summary
 exit-address-family

TEST:

R1#sh ip ro vrf CUST1 rip
     2.0.0.0/24 is subnetted, 1 subnets
R 2.2.2.0 [120/1] via 10.1.12.2, 00:00:09, FastEthernet0/0
R1#

R1#sh ip ro vrf CUST2 rip
     22.0.0.0/24 is subnetted, 1 subnets
R 22.22.22.0 [120/1] via 10.1.21.2, 00:00:06, FastEthernet0/1

R1#ping vrf CUST2 22.22.22.22 so lo1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 22.22.22.22, timeout is 2 seconds:
Packet sent with a source address of 11.11.11.11
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/20/44 ms
R1#

-- 
Piotr Matusiak
CCIE #19860 (R&S, SEC)
2009/9/15 ALL From_NJ <all.from.nj_at_gmail.com>:
> Hey folk,
>
> I have not done vrf lite before ... and I found some docs related to mpls
> lite, but am not able to find much on the doc cd.  Here is what I found:
>
> http://www.cisco.com/en/US/docs/ios/12_2sb/12_2sba/feature/guide/vrflite.html
>
> Any better links than the one above?  This seems to be a bit dated and not
> all the commands work ...
>
> Notes on VRF Lite:
> - VRF Lite appears to be plain MPLS VPNs configured, with the send-label
> command on the PEs, and MPLS configured between PE and CE.  Any other
> throughts?
>
> Also, I am looking for some additional lab ideas on MPLS VPNs ...
> configuring them is not too hard, and tshooting my own screwups has been
> entertaining.  I am looking for some ideas on ways to make this better.
>
> The config examples are pretty easy to follow in case e get hung up on a
> task ...
> http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_cfg_layer3_vpn_ps6350_TSD_Products_Configuration_Guide_Chapter.html
>
> Many TIA,
>
> --
> Andrew Lee Lissitz
> all.from.nj_at_gmail.com
>
>
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