Frame forwarding apparatus

A MAC spoofed frame or a loop frame generated by a user is prevented from obstructing communication and the source port ID of a fraud is reported to the network administrator. A MAC frame forwarding apparatus (20) adds the input port ID and the source MAC address of a received frame. The MAC frame f...

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Bibliographic Details
Main Authors TSUGE MUNETOSHI, SAITO TOSHIYUKI, MITSUI YU, TOYAMA TAKAAKI
Format Patent
LanguageChinese
English
Published 13.01.2010
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A MAC spoofed frame or a loop frame generated by a user is prevented from obstructing communication and the source port ID of a fraud is reported to the network administrator. A MAC frame forwarding apparatus (20) adds the input port ID and the source MAC address of a received frame. The MAC frame forwarding apparatus has a frame forwarding management table (2510) and a frame discarding management table (2520). The frame discarding management table has a MAC address to be discarded, indicating a received frame to be discarded if the address matches the source MAC address of the received frame, a target port ID, and the number of discarded frames. A management apparatus discards a received frame if the source MAC address matches the MAC address to be discarded and counts the number of discarded frames. If the number of discarded frames exceeds a predetermined level, the port ID, the MAC address, and the number of discarded frames are reported to the management apparatus (10), and the source port of the fraud i
Bibliography:Application Number: CN200910147543