17 December 2009

Group 1

Developers: Peter Hannon Brian Walshe

Researchers: Arnav Aggarwal Paul Gildea

PM: Paul Soprovici

Objective

Design an SNMP Manager & Agent for Monitoring Web Server

SNMP ModelManager

Set Get Get Bulk

Agent Trap

Management Information Base

An SNMP-Managed Network Consists of Managed Devices, Agents, and NMSs(http://www.cisco.com/en/US/docs/internetworking/technology/handbook/SNMP.html#wp1022871)

Design

SNMP – used by the manager to communicate with the agentManager – SNMP4J LibrariesAgent - AdventNet SNMP Agent Toolkit for JavaAgent to Web Server communication through JMX (Java Management

Extensions) calls

Design -2What to monitor?

Set: restart the server Enable/disable http port Set connections per second threshold

Get: Hostname/port Uptime Connections per second/ threshold Heap memory usage

Get bulk Servlet table

Trap: Connections per second threshold exceeded

notification

Implementation - Manager

SET

GET

TRAP

GET BULK

Implementation - AgentMIB: designed in AdventNetAgent: generated in AdventNet

1.3.6.1.4.1.1.5.3

EvaluationComparison of the values returned by Gets

and Get Bulk with JConsoleSets have the expected resultsThreshold and Traps

Use Python to generate multiple requestsfrom urllib import urlopen

import timefor i in range(1000):

urlopen("http://localhost:8080")time.sleep(0.01)

If connectionsPerSec > connectionsThreshold

TRAP

Conclusion:

DEMO