Frame transfer method and node in Ethernet
First Claim
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1. A node in an Ethernet network to relay a modified Ethernet frame, comprising:
- an element which inserts two or more VLAN tags into said frame and removes an other VLAN tag in a relay process of said frame,wherein said frame comprises an Ethernet frame, as modified such that network control information is selectively stored to said VLAN tags and said network control information is not restricted to a 64-byte minimum frame size restriction of network control information, as defined by a standard of said Ethernet.
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Abstract
A node to relay the Ethernet frame provided with means to insert, in the relay process of the frame, two or more VLAN tags into the frame at a time and to remove the inserted VLAN tags wherein a TTL area to show the frame survival time is provided in the VLAN tag to be inserted to the frame so that whether the survival time has been elapsed or not is checked by the value in the TTL area and the frame after elapse of the survival time is discarded without being relayed.
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Citations
18 Claims
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1. A node in an Ethernet network to relay a modified Ethernet frame, comprising:
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an element which inserts two or more VLAN tags into said frame and removes an other VLAN tag in a relay process of said frame, wherein said frame comprises an Ethernet frame, as modified such that network control information is selectively stored to said VLAN tags and said network control information is not restricted to a 64-byte minimum frame size restriction of network control information, as defined by a standard of said Ethernet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A frame transfer method of a node in an Ethernet network to relay a modified Ethernet frame, said method comprising:
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receiving said frame in said node, said frame comprising an Ethernet frame as modified such that network control information can selectively be stored to a VLAN tag, said network control information not being restricted to a 64-byte minimum frame size restriction of network control information, as defined by a standard of said Ethernet; inserting two or more VLAN tags into said frame and removing at least one other VLAN tag from said frame in a relay process of said frame; and forwarding said frame. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification