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

[Jason Lixfeld]

Handy!

Is there an IOS-XR equivalent to this?

On 2012-11-02, at 12:51 PM, Paul Wells <paul at lituya.com> wrote:

> 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/Configuring_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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> 
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