Invention Grant
- Patent Title: Support of a large number of VLANs in a bridged network
- Patent Title (中): 支持桥接网络中的大量VLAN
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Application No.: US11416988Application Date: 2006-05-02
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Publication No.: US08902908B2Publication Date: 2014-12-02
- Inventor: Michael R. Smith , Gyaneshwar S. Saharia , Gaetano Borgione , Atul Rawat
- Applicant: Michael R. Smith , Gyaneshwar S. Saharia , Gaetano Borgione , Atul Rawat
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: The Law Office of Kirk D. Williams
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/56 ; H04L12/723 ; H04L12/46

Abstract:
Disclosed are, inter alia, methods, apparatus, data structures, computer-readable media, mechanisms, and means for supporting a large number of virtual local area networks (VLANS) in a bridged network. Packets are received that include 802.1Q Virtual Local Area Network (VLAN) identifiers (VIDs). However, rather than accessing the VLAN forwarding information directly based on the VID as conventionally performed, the VLAN forwarding information to use for a particular packet is determined based on an interface (e.g., virtual or physical interface, port, MPLS label, GRE tunnel or other abstraction of the interface). In other words, the interface associated with the packet identifies a context for determining the VLAN forwarding information based on the VID included in the packet. Therefore, network bridging devices can support more VLANs than that imposed by the 4096 possible values of a VID.
Public/Granted literature
- US20070258446A1 Support of a large number of VLANs in a bridged network Public/Granted day:2007-11-08
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