ACI Tenants Use

[dhr.tech1]

Hi All,

I have a question about tenants. I understand how traffic is send via VXLAN over Nexus 9K switches. we use BGP RT-RD values to ensure that the traffic is landed into right L3 VRF. But how does it manufacture in ACI ? Since we don't use MP-BGP but COOP for intra Tenant communication. How ACI ensure that the packet for L2 or L3 actually sent to the right tenant ?

Regards,

[mabushei]

Hi, very good question, actually as per my understanding, to distinguish the traffic ACI use the extra-vxlan header,

if I get your question right, to make forwarding across the fabric possible, ACI tag the identifier that is shared among all the nodes. This identifier is VNID. Mainly this ID is used as a bridge domain VNID for bridging the traffic "l2" or as a VRF VNID for routing the traffic "l3"

[AshSe]

Can you expand (full form) SNE.

[nouse4it]

Hi,

as @mabushei already explained, this is done via the identifier in the VXLAN header, as you can also see in this picture.

Each Tenant, and it´s coponents like VRFs, BD, EPGs, have uniquie identifier, which map to a certain VXLAN Segment and to the coresponding Tenat.

If you want to know more details, I can very recommend this Cisco Live Session from Joe Young: https://www.ciscolive.com/c/dam/r/ciscolive/global-event/docs/2024/pdf/BRKDCN-3900.pdf

Regards,

Ben