Azure Stack HCI (Hyper-V) and C9800-c

[PieroB]

I have an Azure Stack HCI (Azure Local) cluster consisting of two servers: Host-1 and Host-2.

• On Host-1, I’m running WLC-1 (C9800-CL) and a Windows VM (VM-test1).

• On Host-2, I’m running WLC-2 (C9800-CL) and another Windows VM (VM-test2).

Both WLCs use a virtual NIC configured as a trunk, while the Windows VMs use access VLAN interfaces. Everything is in VLAN 213, same IP subnet for all VMs and controllers.

Here’s the issue:

• WLC-1 can ping VM-test1 (same host).

• VM-test1 can ping VM-test2 (different hosts).

• But WLC-1 cannot ping VM-test2 across hosts.

• 
  It looks as if only tagged traffic from the WLCs isn’t leaving the host.

thanks everyone!

[Mark Elsen]

  - @PieroB        What is the purpose of this setup ? Why the need for WLC-1 to ping VM-test2 ?

  M.

[PieroB]

Just for troubleshooting, since the WLC-* doesn't reach the gateway on its wireless management interface

[Mark Elsen]

  - @PieroB    Depending on the topology , this is not a direct need if the wireless management interface has it's own
                     SVI (assuming these controllers are both on local servers, not in the cloud).
                     It's always advisable to checkout the complete configuration of a 9800 controller with the
                    CLI command show tech wireless and feed the output from that into Wireless Config Analyzer

  M.