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We do this by SDC portal.
Design VFs
Design VFs: Design sppartnerVF(composite by sppartner), deviceVF(composite by device), siteVF(composite by site), sitewanVF(composite by sitewanport),
sotnvpnattachmentVF(composite by sotnvpnattachment and allotted resource), sdwanvpnattachmentVF(composite by sdwanvpnattachment and allotted resource).