Chassis switches, network interface cards, and methods for management of packet forwarding
AssigneeAccton Technology Corporation
InventorChin-Chieh Huang
Life of this patent
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Abstract
A chassis switch including a network interface card is provided. The network interface card includes a first Virtual Local Area Network (VLAN) ID to a first packet originating from an internal Internet Protocol (IP) address, to prevent the first packet from being forwarded to the outside of the chassis switch. In addition, the network interface card further includes a second VLAN ID to a second packet originating from an external IP address, to allow the second packet to be forwarded to the outside of the chassis switch.
Claims11
A chassis switch, comprising:
- a network interface card, comprising an external port for communications towards outside of the chassis switch, and configured to process a first packet originating from an internal Internet Protocol (IP) address, and a second packet originating from an external IP address;
- wherein the processing of the first packet comprises:
- including a first Virtual Local Area Network (VLAN) tag in the first packet, determining a first egress port for the first packet according to the first VLAN tag and a first Media Access Control (MAC) address included in the first packet, and dropping the first packet when the first egress port is the external port;
- wherein the processing of the second packet comprises:
- including a second VLAN tag in the second packet, determining a second egress port for the second packet according to the second VLAN tag and a second MAC address included in the second packet, and removing the second VLAN tag from the second packet and forwarding the second packet via the second egress port.
A method for management of packet forwarding, executed by a network interface card of a chassis switch, the method comprising:
- processing a first packet originating from an internal IP address, wherein the processing of the first packet comprises:
- including a first VLAN tag in the first packet, determining a first egress port for the first packet according to the first VLAN tag and a first MAC address included in the first packet, and dropping the first packet when the first egress port is the external port;
- and
- processing a second packet originating from an external IP address, wherein the processing of the second packet comprises:
- including a second VLAN tag in the second packet, determining a second egress port for the second packet according to the second VLAN tag and a second MAC address included in the second packet, and removing the second VLAN tag from the second packet and forwarding the second packet via the second egress port.
A network interface card, installed in a chassis switch, comprising:
- an external port, configured for communications towards outside of the chassis switch;
- a controller, configured to generate a first packet originating from an internal IP address, and a second packet originating from an external IP address;
- and
- a switch device, configured to include a first VLAN tag in the first packet, determine a first egress port for the first packet according to the first VLAN tag and a first MAC address included in the first packet, drop the first packet when the first egress port is the external port, include a second VLAN tag in the second packet, determine a second egress port for the second packet according to the second VLAN tag and a second MAC address included in the second packet, and remove the second VLAN tag from the second packet and forward the second packet via the second egress port.
Dependencies are inferred from the claim text.