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FedeGaibrel
Beginner

l3out priority over another - strechedfabric

Hello guys! is there any way to configure priority in a epg or BD in order to select a L3out over other? We have 2 sites in a streched fabric configuration, and we need that the host in site 1 choose l3out of its site, not the l3out of the other site. But, when the l3out goes down, the traffic should flow to the other l3out in the other site.

I have attached a picture to clarify.

Thanks in advance

 

1 ACCEPTED SOLUTION

Accepted Solutions
micgarc2
Cisco Employee

Are these two identical routes from the perspective of both L3 outs? We will always chooses LPM first.  

 

If they are identical then this should work if you set the local preference via an Interleak Route Policy to a value higher on the L3 out you want to prefer. (Cisco local preference default value is 100).

 

Keep in mind this would only work for EPs that are not directly attached to those BLs. This is because the EPs on the BL will prefer the local route because they are not redistributed/imported into MP-BGP since traffic is local to that leaf.

 

 

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micgarc2
Cisco Employee

Are these two identical routes from the perspective of both L3 outs? We will always chooses LPM first.  

 

If they are identical then this should work if you set the local preference via an Interleak Route Policy to a value higher on the L3 out you want to prefer. (Cisco local preference default value is 100).

 

Keep in mind this would only work for EPs that are not directly attached to those BLs. This is because the EPs on the BL will prefer the local route because they are not redistributed/imported into MP-BGP since traffic is local to that leaf.