ACI with VxRail issues

[Networker0]

Hello,

We are connecting Dell vxrail nodes to aci via 10G link, but we have issues during the cluster discovery process.

An EPG is configured for vxrail internal mgmt and aci can see all the nodes , we also enabled igmp and Mld snooping under BD.

Is there any special configuration to add (multicast ipv6 ...)?

Note: we are using first gen leafs.

Thnx.

[Robert Burns]

Did you enable PIMv6 under the BD?

Did you enable Multicast on the VRF?

Robert

[Networker0]

Thnx for your reply,

No, we didn't enabe PIMv6 under BD and multicast under VRF. Because i think vxrail node just need L2 multicast from ACI.

Correct me if i'm wrong.

[sacristiano]

Hello,

How did you go about solving the problem?

Thank You!

[Brandon Rumer (Cisco)]

Ran into this recently.

During the VxRail build (initial or node addition) there is a lot of IPv6 multicast communication within the VLAN 3939 ("VxRail Management"). I found that disabling Rogue Endpoint Control in ACI allowed this process to finish. Once the VxRail is done being built (or additional node added) you can safely re-enable Rogue EP control.

You do not need to do anything with MLD or PIM policies on this EPG/VLAN. This is because this network never leaves VLAN3939 and you do not have a gateway/subnet configured in the associated "VxRail Management" Bridge Domain.

[sacristiano]

Hello Brandon,

Thank you so much for compatilhar, I've already booked here in the knowledge base.

Thank you very much!