Restrictions for Day N Changes in Network Design
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Update from dual WAN to single WAN is not supported.
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Control connections from NFVIS to Cisco SD-WAN Manager can only be established through one path. You can configure either wan-br or wan2-br.
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The SRIOV and OVS interfaces cannot be swapped. This is because the interface MAC addresses are changed.
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Physical ports cannot be removed from the default mapping.
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Only one physical port can be assigned to one OVS-bridge.
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Network mapping swap that results in a MAC address change is not allowed. For instance, changing the VNIC type from virtio to SRIOV is not allowed, as it causes a change in the MAC address.
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Only the CPU and Memory values can be updated in the flavor. We recommend to update the flavor through Cisco SD-WAN Manager.
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We recommend that you first apply the DPDK enabling command alone, to the Day N configuration changes, and after that is successful and the VMs are up and running, then apply the flavor configuration update. This is because, enabling DPDK requires a VM reboot, but when the VM is booting, the VM flavor cannot be updated. Hence, we recommend that you separate out the DPDK enabling configuration changes from the rest of the configuration changes.