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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9397942 B1

PDFFull Text
Date of Patent:
Jul. 19, 2016

Filed:

Sep. 02, 2013

Packet forwarding

Applicant:

Hangzhou H3c Technologies Co., Ltd., Hangzhou, CN;

Inventor:

Yubing Song, Beijing, CN;

Assignee:

HANGZHOU H3C TECHNOLOGIES CO., LTD., Zhejiang, CN;

Attorney:

Hewlett Packard Enterprise Patent Department

Primary Examiner:

Faruk Hamza

Assistant Examiner:

Abu-Sayeed Haque

Int. Cl.
CPC ...
H04L 12/50 (2006.01); H04Q 11/00 (2006.01); H04L 12/28 (2006.01); H04L 12/56 (2006.01); H04L 12/741 (2013.01); H04L 12/46 (2006.01); H04L 29/12 (2006.01); G06F 9/455 (2006.01); H04L 12/18 (2006.01); H04L 12/715 (2013.01); H04L 12/723 (2013.01); H04L 12/721 (2013.01); H04L 12/14 (2006.01);
U.S. Cl.
CPC ...
H04L 45/745 (2013.01); G06F 9/45558 (2013.01); H04L 12/1886 (2013.01); H04L 12/4633 (2013.01); H04L 12/4641 (2013.01); H04L 45/12 (2013.01); H04L 45/66 (2013.01); H04L 45/72 (2013.01); H04L 61/103 (2013.01); H04L 61/6022 (2013.01); G06F 2009/4557 (2013.01); G06F 2009/45595 (2013.01); H04L 12/1485 (2013.01); H04L 45/04 (2013.01); H04L 45/34 (2013.01); H04L 45/505 (2013.01);
Abstract

According to an example, to forward a packet, an access layer device searches a Layer 2 forwarding table according to a source Media Access Control (MAC) address of the packet, and replaces the source MAC address with a mapped virtual MAC address in a matching Layer 2 forwarding entry. The Layer 2 forwarding table is searched according to a destination MAC address of the Ethernet packet. In response to determining that a Layer 2 forwarding entry matching the destination MAC address of the Ethernet packet does not include a MAC address mapped to the destination MAC address, Very Large Layer 2 (VLL2) network protocol encapsulation is performed on the Ethernet packet of which the source MAC address is replaced according to an egress port in the Layer 2 forwarding entry matching the destination MAC address; and the Ethernet packet encapsulated with a VLL2 network protocol header is sent via the egress port.

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