US 2019/0158401 A1Published application

Packet forwarding

AssigneeNew H3C Technologies Co., Ltd.

InventorXuewei LIANG

Life of this patent

Estimating the term…

Loading patent…

Abstract

A PE and a method of forwarding packet are provided. According to an example of the method, when receiving a packet, the PE may determine a vPort associated to a port through which the packet is received. When a forwarding entry adding condition is satisfied, the PE may add a first forwarding entry in a forwarding table by recording the first vPort as an egress port, a source MAC address of the packet as a MAC address and an VLAN identifier of the VLAN associated with the first vPort as a VLAN identifier. Subsequently, the PE may search the forwarding table for a second forwarding entry matching the destination MAC address of the packet and the VLAN to which the packet belongs. The PE may search a port associating relationship table for a port associated to a second vPort in the second forwarding entry to forward the packet.

Claims12

Dependent claims

A method of forwarding packet, comprising:

receiving, by a Port Extender (PE), a packet;
determining, by the PE, a first Virtual Port (vPort) associated to a port through which the packet is received;
adding, by the PE, a first forwarding entry in a forwarding table in response to a forwarding entry adding condition is satisfied, by recording the first vPort as an egress port in the first forwarding entry, recording a source Media Access Control (MAC) address of the packet as a MAC address in the first forwarding entry, and recording a Virtual Local Area Network (VLAN) identifier of a VLAN associated with the first vPort as a VLAN identifier in the first forwarding entry;
searching, by the PE, the forwarding table for a second forwarding entry matching a destination MAC address of the packet and a VLAN identifier of the VLAN to which the packet belongs;
and
searching, by the PE, a port associating relationship table for a port which is associated to a second vPort in the second forwarding entry;
and
forwarding, by the PE, the packet through the port associated to the second vPort.

5 more elements

A Port Extender (PE), comprising a processor and a forwarding chip, wherein

receiving, by the forwarding chip, a packet;
determining, by the forwarding chip, a first Virtual Port (vPort) associated to a port through which the packet is received;
sending, by the forwarding chip, the packet to the processor, and
adding, by the processor, a first forwarding entry in a forwarding table in response to a forwarding entry adding condition is satisfied, by recording the first vPort as an egress port in the first forwarding entry, recording a source MAC address of the packet as a Media Access Control (MAC) address in the first forwarding entry, and recording a VLAN identifier of a VLAN associated with the first vPort as a Virtual Local Area Network (VLAN) identifier in the first forwarding entry;
searching, by the forwarding chip, the forwarding table for a second forwarding entry matching a destination MAC address of the packet and a VLAN identifier of a VLAN to which the packet belongs;
searching, by the forwarding chip, a port associating relationship table for a port associated to a second vPort in the second forwarding entry;
and
forwarding, by the forwarding chip, the packet through the port associated to the second vPort.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/099,677Filed 20 Jun 2017
Priority: CN 201610464540.421 Jun 2016
Published: 23 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 49/70
Packet switching elements: virtual switches
H04L 12/4641
Interconnection of networks: virtual LANs, VLANs, e.g. virtual private networks [VPN]
H04L 45/02
Routing or path finding of packets in data switching networks: topology update or discovery
H04L 45/66
Routing or path finding of packets in data switching networks: layer 2 routing, e.g. in Ethernet based MAN's