Re: MPLS VRF - Lite and Ideas

The way I understand it, VRF-Lite is basically VRFs but without the BGP to
transport the routes. Also, there seems to be a stressing of using switches
to trunk to router sub-interfaces for different VRFs.

On Tue, Sep 15, 2009 at 4:28 PM, Piotr Matusiak <piotr_at_ccie1.com> wrote:

> 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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> >
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-- 
Regards,
Joe Astorino - CCIE #24347 R&S
Technical Instructor - IPexpert, Inc.
Cell: +1.586.212.6107
Fax: +1.810.454.0130
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