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Layer-2 only network and Layer 2 Handoff Border

Erich Schommarz
Beginner
Beginner

We have a SDA environment where we created a L2 Vlan with a Gateway (GW) outside Fabric. For the GW we created a L2 Handoff on the border, for the network we created a L2 Network with the option "Layer-2 only". Now we are facing some issues with ARP not working in one direction (Outside to Fabric) and also a few devices which have issues with DHCP. In addition other L2 NW with same configuration work without issues until now over separate L2 Handoffs.

For the "Layer-2 only" option there is a message that "This is an early-release feature. This feature should not be enabled

without explicit guidance from a Cisco technical expert. We are running following DNA Center version: Version 2.2.3.4

Are there any known limitations for the function "Layer-2 only" especial with combination L2 Handoff?

@Scott Hodgdon , you presented once a presentation at the PVT with new features "Gateway on Firewall Outside Fabric". There you mentioned that a Dummy SVI is required and L2 flooding. With the "Layer-2 only" dummy SVI is not configured. If you see this maybe you have some tips recommendation for us which would be very much appreciated.

Thanks for any answer to this function / feature in SDA.

1 Reply 1

Jonathan Cuthbert
Cisco Employee
Cisco Employee

@Erich Schommarz wrote:

We have a SDA environment where we created a L2 Vlan with a Gateway (GW) outside Fabric. For the GW we created a L2

For the "Layer-2 only" option there is a message that "This is an early-release feature. This feature should not be enabled

without explicit guidance from a Cisco technical expert. We are running following DNA Center version: Version 2.2.3.4

Are there any known limitations for the function "Layer-2 only" especial with combination L2 Handoff?

 


I'm sorry to hear you are running into challenges.  This feature is not yet in General Availability, and our ask is to do just as the UI instructs.

To troubleshoot or advise on this, we really need to sit down and discuss.  As an early-release feature, explicit guidance from a Cisco technical expert is necessary, please.

If you are in the partner community, please reach out in the WxT Partner Space.  If not, please reach out through your Cisco Sales and Support team.

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