Extending flow channels across fabrics

A network edge node coupling a first network fabric and a second network fabric, the network edge node comprising

• an ingress port to receive a packet from an upstream node within the first network fabric;
• a flow identification logic unit to identify a flow to which the received packet belongs based on a first flow identifier associated with the packet;
• an egress port to forward the packet to the second network fabric, a respective node in the second network fabric to identify the flow based on a second flow identifier;
• an indicating logic unit to indicate to the upstream node of the forwarded packet exiting the first network fabric;
• and
• a flow-maintaining logic unit to keep the flow active within the first network fabric after all packets in the flow exit the first network fabric and until all packets arrive at a destination node.

A non-transitory machine-readable storage medium storing instructions executable by a processing resource to:

• identify, at an egress edge node of the first network fabric, a flow to which a received packet belongs based on a first flow identifier associated with the packet;
• forward, by the egress edge node, the received packet to the second network fabric, a respective node in the second network fabric to identify the flow based on a second flow identifier;
• indicate to an upstream node of the forwarded packet exiting the first network fabric;
• and
• keep the flow active within the first network fabric after all packets in the flow exit the first network fabric and until all packets arrive at a destination node.