US 8,559,318 B2Granted

Method, node and system for obtaining link aggregation group information

AssigneeHuawei Technologies Co., Ltd.

InventorsWei Cao, Xinchun Guo

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Abstract

A method for obtaining link aggregation group (LAG) information, and a node and a system thereof are provided, which belong to the field of communication technologies. The method includes the following steps. An ingress node of a label switched path (LSP) sends an echo request message to another node on the LSP, in which the message carries identification information, and the identification information is for identifying that the LAG information on the LSP needs to be obtained. The ingress node receives an echo reply message returned by said another node, in which the message carries LAG information between said another node and a next hop node on the LSP. The present invention implements the obtaining of LAG information on the LSP and brings great convenience to OAM of MPLS network, and has the advantages of being simple, convenient, and easy to implement and having strong practicality.

Claims9

Dependent claims

A method for obtaining link aggregation group (LAG) information, comprising:

sending, by an ingress node of a label switched path (LSP), an echo request message to another node on the LSP, and carrying identification information in the echo request message, wherein the identification information is for identifying the LAG information on the LSP which needs to be obtained;
and
receiving, by the ingress node, an echo reply message returned by said another node, wherein the echo reply message carries the LAG information between said another node and a next hop node on the LSP;
wherein after the ingress node of the LSP sends the echo request message to said another node on the LSP, the method further comprises:
receiving, by said another node, the echo request message;
determining according to the identification information in the echo request message, by said another node, whether the LAG information needs to be obtained;
and
if the LAG information needs to be obtained, obtaining the LAG information between said another node and the next hop node on the LSP, carrying the LAG information in the echo reply message, and returning the echo reply message to the ingress node;
if the LAG information does not need to be obtained, not obtaining the LAG information between said another node and the next hop node on the LSP.

6 more elements

A system for obtaining link aggregation group (LAG) information, comprising:

an ingress node and another node, wherein the ingress node and said another node are located on a label switched path (LSP) corresponding to the same forwarding equivalence class (FEC);
the ingress node is configured to send an echo request message to said another node, carry identification information in the echo request message, and receive an echo reply message returned by said another node, wherein the echo reply message carries the LAG information between said another node and a next hop node on the LSP, and the identification information is for identifying whether the LAG information on the LSP needs to be obtained;
and
said another node is configured to receive the echo request message sent by the ingress node, determine, according to the identification information carried in the echo request message, whether the LAG information needs to be obtained, and if the LAG information needs to be obtained, obtain the LAG information between said another node and the next hop node on the LSP, carry the LAG information in the echo reply message, and return the echo reply message to the ingress node;
if the LAG information does not need to be obtained, not obtain the LAG information between said another node and the next hop node on the LSP.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/092,384Filed 22 Apr 2011 · continuation
Priority: CN 2008 1 022469023 Oct 2008
Published: US 2011/0205909 A125 Aug 2011
Granted: 15 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 41/00
Arrangements for maintenance, administration or management of data switching networks
H04L 43/10
Arrangements for monitoring or testing data switching networks: active monitoring, e.g. heartbeat, ping or trace-route
H04L 43/50
Arrangements for monitoring or testing data switching networks: testing arrangements
H04L 45/02
Routing or path finding of packets in data switching networks: topology update or discovery