[c-nsp] leaking only a couple routes between 2 vrf's

[Paul Wells]

Hi Aaron,

If you're doing this in the context of a BGP/MPLS VPN, then you already 
have BGP in the picture and I think it would be better/simpler to use an 
import or export map as others have suggested.

FWIW, replicated routes can be redistributed by IGPs (but not BGP) by 
using a command like:

   redistribute vrf red ...

Regards,
Paul

On 11/06/2012 11:51 AM, Aaron wrote:
> thanks, per the config guidance below, I have that route replicated into the
> vrf that I wanted it into on the local pe where I did that replicate trick
> from one vrf to another.... but how would I get that replicated route sent
> to other neighboring pe's in that L3VPN ?
>
> Aaron
>
> -----Original Message-----
> From: Paul Wells [mailto:paul at lituya.com]
> Sent: Friday, November 02, 2012 11:51 AM
> To: Aaron; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] leaking only a couple routes between 2 vrf's
>
> Hi Aaron,
>
> If you have a recent IOS release you can use the "route-replicate"
> command to do this directly without requiring BGP.  For example:
>
> vrf definition blue
>    !
>    address-family ipv4
>     route-replicate from vrf red unicast all route-map red2blue
>    exit-address-family
> !
> vrf definition red
>    !
>    address-family ipv4
>    exit-address-family
> !
> ip prefix-list red2blue seq 5 permit 90.0.0.0/8 le 32 ip prefix-list
> red2blue seq 10 permit 91.0.0.0/8 le 32 !
> route-map red2blue permit 10
>    match ip address prefix-list red2blue
> !
>
> R1#sh ip ro vrf red
>
> Routing Table: red
> Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
> ...
>          + - replicated route, % - next hop override
>
> Gateway of last resort is not set
>
>         10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
> C        10.1.0.0/24 is directly connected, Ethernet0/0
> L        10.1.0.180/32 is directly connected, Ethernet0/0
>         90.0.0.0/24 is subnetted, 2 subnets
> O        90.1.0.0 [110/11] via 10.1.0.181, 00:30:26, Ethernet0/0
> i L1     90.2.0.0 [115/20] via 10.1.0.181, 00:00:05, Ethernet0/0
>         91.0.0.0/24 is subnetted, 1 subnets
> O        91.1.0.0 [110/11] via 10.1.0.181, 00:30:16, Ethernet0/0
>         92.0.0.0/24 is subnetted, 1 subnets
> O        92.1.0.0 [110/11] via 10.1.0.181, 00:30:16, Ethernet0/0
>
> R1#sh ip ro vrf blue
>
> Routing Table: blue
> Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
> ...
>          + - replicated route, % - next hop override
>
> Gateway of last resort is not set
>
>         90.0.0.0/24 is subnetted, 2 subnets
> O   +    90.1.0.0 [110/11] via 10.1.0.181 (red), 00:30:38, Ethernet0/0
> i L1+    90.2.0.0 [115/20] via 10.1.0.181 (red), 00:00:17, Ethernet0/0
>         91.0.0.0/24 is subnetted, 1 subnets
> O   +    91.1.0.0 [110/11] via 10.1.0.181 (red), 00:30:28, Ethernet0/0
>
>
> This is documented as part of the "Easy Virtual Network" feature, but can be
> used by itself. See, for example:
>
> http://www.cisco.com/en/US/docs/ios-xml/ios/evn/configuration/xe-3s/Configur
> ing_Easy_Virtual_Network_Shared_Services.html
>
> Regards,
> Paul
>
> On 11/01/2012 04:28 PM, Aaron wrote:
>> What is a clean/easy way to leak a couple routes between two vrf's ?
>> if you have links to docs or sites that explain this or you know how ,
>> lemme know please.
>>
>> Aaron
>>
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