US 7,607,049 B2 · Apparatus and method for detecting network failure location

Abstract

A L2 loop failure location generated in any one of a plurality of search target apparatuses disposed in network is detected in a short time. A network failure location detecting apparatus executes the steps of broadcasting packets with a plurality of different source MAC addresses; acquiring statistical information that is information of a learning port of the plurality of different source MAC addresses learned by each of the plurality of search target apparatuses; finding whether the number of the learning ports of the plurality of different source MAC addresses is one or two from the acquired statistical information; and determining that the L2 loop failure location is the search target apparatus including two learning ports of the plurality of different source MAC addresses.

Claims9

Dependent claims

A method of searching for a L2 loop failure location generated in any one of a plurality of search target apparatuses disposed in a network with a network failure location detecting apparatus, the method comprising:

broadcasting, from the detecting apparatus, a plurality of packets respectively having different source MAC addresses;
acquiring statistical information of learning ports, which have learned the plurality of different source MAC addresses in each of the plurality of search target apparatuses;
finding whether there are, in any of the plurality of search target apparatuses, two learning ports which have respectively learned different source MAC addresses from the acquired statistical information;
and
determining that the L2 loop failure location is at the search target apparatus of which two learning ports are found as respectively having learned the different source MAC addresses.

2 more elements

A network failure location detecting apparatus that detects a L2 loop failure location generated in any one of a plurality of switches disposed in a network, the network failure location detecting apparatus comprising:

a statistical information acquiring unit to broadcast a plurality of packets respectively having different source MAC addresses, and to acquire statistical information of learning ports, which have learned the plurality of different source MAC addresses in each of the plurality of search target apparatuses;
and
a data analyzing unit to find whether there are, in any of the plurality of search target apparatuses, two learning ports which have respectively learned different source MAC addresses from the acquired statistical information and to determine that the L2 loop failure location is at the search target apparatus of which two learning ports are found as respectively having learned different source MAC addresses.

Dependencies are inferred from the claim text.

Apparatus and method for detecting network failure location

Life of this patent

Apparatus and method for detecting network failure location

Life of this patent

Abstract

Claims9