L3 border handoff SDA

[Pascal Lacroix]

we are building an SDA network with two Cisco9500 Border Nodes that are connected by BGP to a fusion firewall cluster (Fortigate). When DNAC configures the L3 border handoff it uses a /30 subnet between the Border Node and the external device, in my case the Fortigate. There is a L2 trunk between the border nodes and from each border node there is a L2 trunk towards the Fortigate. So i want to use the same vlan on both Border nodes for the connection with the Fortigate.

Does anyone know if you can you use a /29 subnet (instead of the /30) for the L3 Border handoff (BGP) communication?  

kind regards,

Pascal

[jalejand · Accepted solution]

L3 Handoff automation will only include /30 subnets for peering configured from the L3 handoff IP Pool, in 2.3.4.x, manual L3 handoff config (done on the UI) will allow custom subnets.

Another way is to manually create the SVIs+BGP peerings manually with a /29.

[Pascal Lacroix]

thanks for your answer. 

We are now running 2.3.3.4. Do you know when 2.3.4.x will be released?

[MUP0]

So in 2.3.4.x is /31 also allowed (like in the underlay) and when we have option to manually define VLAN Name and ID, can we re-use the same ID (e.g. 3001) in different fabrics (completely different borders, peers, etc.)?