Remote network monitoring method

• US 20040186693A1
• Filed: 12/29/2003
• Published: 09/23/2004
• Est. Priority Date: 06/28/2001
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Chen, Hongfei, Xiang, Haizhou, Lv, Zhenfeng
• Granted Patent: US 7,437,453 B2
• Time in Patent Office: Days
• US Class Current: 702/188
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 43/022 by sampling
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route
• CPC Class Codes: H04L 43/16 Threshold monitoring

Abstract

The invention discloses a remote network monitoring method of computer network. It is an improvement of the RMON (Remote Network Monitoring) alarm group. The method mainly includes: Setting an alarm-extended table in the RMON alarm group; Defining a combination object in MIB (Management Information Base) that is an expression with two or more than two independent objects; A network management center sends a Set-Request packet with the expression to managed devices to initiate a RMON monitoring process; The expression is calculated and its value is compared with a threshold; When calculated value of the expression exceeds the threshold, processing steps preset by the network management center are taken. The invention supports SNMP (Simple Network Management Protocol), optimizes network performance, and saves network bandwidth and CPU resource of the network management center.

Claims

1. A remote computer network monitoring method is that a network management center supports Simple Network Management Protocol (SNMP) and implements remote network monitoring alarm through describing an independent object of a managed device and its attribute in a Manage Information Base (MIB) and comparing statistic value of the independent object with a preset threshold;

comprising;

A. in the MIB, defining an alarm-extended table of Remote Network Monitoring (RMON) that has a combination object combined with at least two independent objects through operation expression;

B. sending a Set-Request packet with said operation expression to the managed device by the network management center;

C. in the managed device, sampling values of every independent object in the operation expression and calculating said combination object according to the operation expression, and then comparing calculated result with the preset threshold;

if calculated result exceeds the threshold, then making process with steps preset by said network management center;

2. The remote computer network monitoring method according to claim 1, further comprising, defining a set of objects which concern about monitoring duration in said alarm-extended table;

ending a monitoring process automatically until the monitoring process exceeds its monitoring duration.

3. The remote computer network monitoring method according to claim 1, said step B comprising, through running an alarm-extended application program, the network management center sending the SNMP Set-Request packet to the managed device and setting the combination object and its attribute.

4. The remote computer network monitoring method according to claim 1, executing said step C based on a preset sampling period.

5. The remote computer network monitoring method according to claim 1, before step C further comprises a step of checking and analyzing the operation expression, which includes parsing a character-string data information of the operation expression from said Set-Request packet and checking whether said character-string data information satisfies syntax rules of four fundamental operations of arithmetic, analyzing whether all independent objects of said in the operation expression can be sampled at said managed device;

initiating a monitoring process for the combination object if said checking and analyzing have been passed.

6. The remote computer network monitoring method according to claim 5, further comprising, if said character-string data information cannot satisfy syntax rules of four fundamental operations of arithmetic, reporting to said network management center that said Set-Requesting is failure and ending;

if said independent objects cannot be sampled from the managed device, reporting to said network management center that set request is failure and ending.

7. The remote computer network monitoring method according to claim 5, the combination object is OCTECT STRING data type and each of the independent objects is represented by integers separated by points.

8. The remote computer network monitoring method according to claim 1, said managed device is a node device or an interface device for network signal transmission supporting SNMP of sub-networks.

9. The remote computer network monitoring method according to claim 1, the step of making process with steps preset by said network management center in the step C comprising, sending Trap packet to the network management center or logging.