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US 2003/0198224 A1Published application
Method for filtering packets and associated controller
AssigneeVIA Technologies, Inc.
InventorsBenjamin Lee, Aj Jiang, Tevin Chen
Life of this patent
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Abstract
The present invention discloses a method and an associated controller for filtering packets. The controller is capable of filtering a plurality of multicast packets. The controller comprises: a content addressable memory control circuit for identifying the packets; a receive buffer; and a FIFO (first-in-first-out) buffer.
Claims20
A method for filtering packets, comprising steps of:
- initializing a network device;
- arranging a content for a content addressable memory;
- writing a plurality of pre-determined MAC addresses into said content addressable memory according to said content;
- and
- activating said network device so as to transceive packets.
2 more elements
A method for filtering a packet, comprising steps of:
- receiving said packet;
- comparing a destination address of said received packet with a content of a content addressable memory;
- and
- selectively dropping said packet in response to said comparison.
1 more element
A MAC (medium access control) controller, comprising:
- a buffer, for receiving and storing a portion of a packet;
- a content addressable memory, comprising an identifying circuit coupled to said buffer for storing a plurality of MAC addresses;
- and
- a receive buffer;
- coupled to said buffer and said content addressable memory, so as to store said packet;
- wherein said an identifying circuit compares a destination address in said packet and said plurality of MAC addresses of said content addressable memory, so as to determine whether said receive buffer should drop said packet.
3 more elements
Dependencies are inferred from the claim text.