I have a customer with an issue when creating a NLB in multicast mode between two guests on a Hyper-V 2012 R2 cluster. The cluster is on a C7000 chassis with BL460 g8 servers and VC FlexFabric 10Gb/24-port (4.10 f/w).
MAC spoofing is also enabled on both of the guests, when the static ARP entry is created on the core switch, we see an ARP storm on the core switch causing poor performance on the VLAN in question.
Can anyone provide any advice on how we can get around this issue?
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