US 8,948,002 B2Granted

Method and device for preventing repeated refreshing of address table of Ethernet ring network node

AssigneeZte Corporation

InventorShaoyong Wu

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Abstract

A method and a device for preventing repeated refreshing of an address table of an Ethernet ring network node are provided. After a state of a port of the Ethernet ring network node is changed to a blocked state, it is determined that whether the Ethernet ring network node is an RPL neighbor node and whether the blockage is triggered by an RPL Blocked protocol frame. If so, the Ethernet ring network node stores refreshed record information corresponding to its two ports on the ring. The problem that an RPL neighbor node refreshes an address table repeatedly in the scenario of switchback of an Ethernet ring network can be effectively solved via the aforementioned method and device, thereby reducing flow broadcast during protection switching of the Ethernet ring network and improving the switching efficiency.

Claims14

Dependent claims

A method for preventing repeated refreshing of an address table of an Ethernet ring network node, comprising:

determining by a blockage triggering detection unit of the Ethernet ring network node, after a state of a port of the Ethernet ring network node, except an Ring Protection Link (RPL) owner node, is changed to a blocked state during a switchback of the Ethernet ring network, whether the Ethernet ring network node to which the blockage triggering detection unit itself belongs is an RPL neighbor node;
when the Ethernet ring network node is the RPL neighbor node, determining by the blockage triggering detection unit whether the blockage is triggered by an RPL Blocked (RPLB) protocol frame from the RPL owner node, and sending a determination result to a refreshed record information maintenance unit;
when the Ethernet ring network node to which the blockage triggering detection unit itself belongs is the RPL neighbor node and the blockage is triggered by the RPL Blocked (RPLB) protocol frame from the RPL owner node, storing, by the refreshed record information maintenance unit of the Ethernet ring network node, the refreshed record information corresponding to two ports of the Ethernet ring network node to which the refreshed record information maintenance unit itself belongs on the ring;
and
wherein each of the blockage triggering detection unit and the refreshed record information maintenance unit are connected to each other and each comprising a computer processor and respective memory, the respective memory storing computer-readable instructions which when executed by the computer processor implement the functions of the said units.

2 more elements

A device for preventing repeated refreshing of an address table of an Ethernet ring network node, comprising a blockage triggering detection unit and a refreshed record information maintenance unit connected to each other, wherein the blockage triggering detection unit of the Ethernet ring network node is configured to determine, after a state of a port of the Ethernet ring network node, except an Ring Protection Link (RPL) owner node, is changed to a blocked state during a switchback of the Ethernet ring network, whether the Ethernet ring network node to which the blockage triggering detection unit itself belongs is a RPL neighbor node;

and when the Ethernet ring network node is the RPL neighbor node, the blockage triggering detection unit is further configured to determine whether the blockage is triggered by an RPL Blocked (RPLB) protocol frame from the RPL owner node, and send a determination result to the refreshed record information maintenance unit;
the refreshed record information maintenance unit of the Ethernet ring network node is configured to save, when the Ethernet ring network node to which the blockage triggering detection unit itself belongs is the RPL neighbor node and the blockage is triggered by the RPLB protocol frame, refreshed record information corresponding to two ports of the Ethernet ring network node to which the refreshed record information maintenance unit itself belongs on the ring,
each of the blockage triggering detection unit and the refreshed record information maintenance unit comprising a computer processor and respective memory, the respective memory storing computer-readable instructions which when executed by the computer processor implement the functions of the said units.

Dependencies are inferred from the claim text.