Network extension groups of global vlans in a fabric switch

A switch, comprising:

• network extension circuitry configured to:
• maintain a mapping between a information associated with a tenant and an aggregate global virtual local area network (VLAN) identifier of a network extension group associated with the tenant, wherein the network extension group comprises a set of edge global VLAN identifiers for individual VLAN identifiers of the tenant and the aggregate global VLAN identifier corresponding to the tenant;
• include the aggregate global VLAN identifier in a packet belonging to the tenant based on the mapping;
• and
• forwarding circuitry configured to determine an egress port for the packet based on a destination switch identifier of the packet and the aggregate global VLAN identifier;
• wherein a respective global VLAN identifier is persistent in a respective switch of a first network of interconnected switches, wherein the first network of interconnected switches is identified by a first fabric identifier.