SD-Access Transit Multicast support

[Sylvain_Che]

Hello,

I'm currently assessing the SD-Access Transit for a multi-site SDA deployment.

At CLEUR2020, I've noted that multicast was not supported between sites when using such type of transit.

I'm unable to find a documentation stating whether or not multicast is now supported with newer DNAC versions.

Does someone have this information please?

Regards,

Sylvain.

[balaji.bandi]

 I've noted that multicast was not supported between sites when using such type of transit.

Do you mean 2 SDA or Multi-site deployment?

check this below information may be helpful :

https://community.cisco.com/t5/networking-documents/cisco-sd-access-multicast/ta-p/4068110

[jedolphi · Accepted solution]

Hi. At this moment multicast between Fabric Sites over SD-Access Transit is not supported. We have multicast support committed to a future release. Pub/Sub SD-Access Transit will be mandatory. It's too early to reveal the supported scenarios and prerequisites in a public forum but if you need to know more about when/how then your Cisco SE or AM should be able to provide additional information. Best regards, Jerome

[Sylvain_Che]

Thank you Jerome! I will contact my local Cisco representative.

What if both my multicast source and Rendezvous-Point are in the datacenter?!

Can I still use SD-Access Transit between sites?

IP-Transit still needed to reach datacenter, right?

Best regards,

Sylvain.

[jedolphi · Accepted solution]

Hi Sylvian, if you are asking for multicast flowing from DC,  over an IP Transit, to a single Fabric Site which is also connected to SD-Access Transit, then the that is fine. The limitation/restriction comes if you try to carry multicast between Fabric Sites over SD-Access Transit. Best regards, Jerome

[Sylvain_Che]

Thank you, it answers my question.

Best regards,

Sylvain.

[anshshar@cisco.com]

Based on some of the confusion over this from some customers, I wanted to clarify that Multicast over SDA-Transit is supported now with Pub/Sub. Here is the cisco live link with details:

https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2024/pdf/BRKENS-2820.pdf

Please reach out to your Cisco SE or AM so customer specific requirements can be verified.

-Anshul