Invention Grant
- Patent Title: Hardware-accelerated packet multicasting in a virtual routing system
- Patent Title (中): 虚拟路由系统中的硬件加速分组多播
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Application No.: US11849352Application Date: 2007-09-03
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Publication No.: US07933269B2Publication Date: 2011-04-26
- Inventor: Joseph Cheng , Zahid Hussain , Tim Millet
- Applicant: Joseph Cheng , Zahid Hussain , Tim Millet
- Applicant Address: US CA Sunnyvale
- Assignee: Fortinet, Inc.
- Current Assignee: Fortinet, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Hamilton, DeSanctis & Cha LLP
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/56 ; G06F15/173

Abstract:
Methods and systems are provided for hardware-accelerated packet multicasting in a virtual routing system. According to one embodiment, a multicast packet is received at an ingress system of a packet-forwarding engine (PFE). The ingress system identifies flow classification indices for the multicast packet. Then, for each instance of multicasting, the ingress system sends a single copy of the multicast packet and the flow classification indices to an egress system of the PFE. The single copy of the multicast packet is buffered in a memory accessible by the egress system. The egress system prepares the multicast packet for transmission by for each flow classification index, identifying corresponding transform control instructions based on the flow classification index, reading the single copy of the multicast packet from the memory, causing the multicast packet to be transformed in accordance with the identified transform control instructions and outputting the transformed multicast packet.
Public/Granted literature
- US20070291755A1 HARDWARE-ACCELERATED PACKET MULTICASTING IN A VIRTUAL ROUTING SYSTEM Public/Granted day:2007-12-20
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