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US 9,178,795 B2Granted
Method and ethernet switching device for detecting loop position in ethernet
AssigneeHuawei Technologies Co., Ltd.
InventorShengtao Sun
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AssigneeHuawei Technologies Co., Ltd.
InventorShengtao Sun
Estimating the term…
A method for detecting loop position in an Ethernet network, includes: the Ethernet switch device learns a MAC address; in a MAC table, a first MAC address corresponds to a first port before the learning of MAC address, and the first MAC address corresponds to a second port after the learning of MAC address; if the second port and the first port do not belong to the same sub-network, an interval between a time of learning on the second port and a time of transmitting a last packet or receiving a last packet from the first port is calculated; and if the interval is smaller than a predetermined judgment threshold of host migration, it is determined that a loop exists in a sub-network connected to the second port.
A method for detecting a loop position in an Ethernet network, the method comprising:
An Ethernet switch device for detecting a loop position in an Ethernet network, comprising:
Dependencies are inferred from the claim text.
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Arrangements for monitoring or testing data switching networks: testing arrangements
Characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]: loop networks
LAN interconnection over a backbone network, e.g. Internet, Frame Relay: lAN interconnection over a bridge based backbone
Routing or path finding of packets in data switching networks: loop-free operations
About 4 years 11 months of term left · ends 25 Sep 2031 (estimated)
The present application relates to a field of communications, more particularly, to a method and an Ethernet switch device for detecting loop position in Ethernet.
Ethernet is currently the most widely-used communication standard of local area network and is gradually becoming the mainstream in wide area network technology.
In a large scale Ethernet, Ethernet switches are generally used to interconnect a plurality of Ethernets, as the effective transmission distance is limited.
In order to clearly illustrate technical solutions of the embodiments of the application or prior arts, drawings of the embodiments or prior arts will be briefly described in the following. It is obvious that the drawings merely illustrate some embodiments of the present application and those skilled in the art may arrive at other drawings based on these drawings without any inventive work.
FIG. 1 schematically shows a network loop;
FIG. 2 schematically shows networking scheme of Ethernet switch devices;
The technical solutions of the embodiments will be described in a clearly and fully understandable way with reference to the drawings related to the embodiments of the present application. It is obvious that the described embodiments are just a part but not all of the embodiments of the present application. Based on the described embodiments herein, those skilled in the art can obtain other embodiments, without any inventive work, which also should be within the scope of the present application.
Some terms used in the embodiments of the application will be explained with reference to FIG. 2, which is a typical networking scheme of Ethernet switch devices. In the embodiments, the Ethernet switch devices are not limited to specific products; instead, the Ethernet switch devices may be all devices performing Ethernet switching functions, including an Ethernet switch, a layer 3 switch, a VPLS (Virtual Private LAN service) device and the like.
Loop Port Set