1. 14. Network Management System (NMS)
Jae Ki Lee
Tel:

2. Basic Concepts of SNMP
The Infrastructure for Network Management (Client-Server Model)

3. Management Information Base

4. Management Information Base
SMI (Structure of Management Information)
MIB
MIB Module
MIB Module
MIB Object
MIB Object
MIB Object
MIB Object
MIB Object
MIB Object
Written by ASN.1
ASN. 1 (Abstract Notation One)

5. Object Identifiers in MIB

6. SNMP Protocol: Understanding the Protocol

7. SNMP Protocol: Understanding the Protocol
SNMPv2 messages
GetRequest (port 161)
Get value of one or more MIB object instances
GetNextRequest (port 161)
Get value of next MIB object instance in list or table
GetBulkRequest (port 161)
Get values in large block of data, for example
InformRequest (port 161)
Inform remote managing entity of MIB values remote to its access
SetRequest (port 161)
Set value of one or more MIB object instances
Response (port 162)
Generated in response to above requests.
SNMPv2-Trap (port 162)
Inform manager of an exceptional event

8. SNMP Protocol: Understanding the Protocol

9. Lab. 1 : NET-SNMP install and configuration
Installing snmp tool on Linux or Unix platform
Now your host is SNMP agent
Understanding SNMP message by using basic SNMP manager application
NET-SNMP
NET-SNMP

10. Lab. 1 : NET-SNMP install and configuration
Widely used free SNMP tool ( on Linux platform or others )
Formerly known as CMU-SNMP and UCD-SNMP
Providing the followings
Basically mib-2 module and other private mib moudules
SNMP agent capability
Simple SNMP manager application
Many C APIs to develop SNMP agent and manager

11. Lab. 1 : NET-SNMP install and configuration
1> Install ( On Linux platform )
You *must* download net-snmp v
After “./configure”, “make” and “make install” , you can execute agent daemon.
#/usr/local/sbin/snmpd
From now this host is a SNMP agent.
Programs and libraries are located in the following directories
/usr/local/bin, /usr/local/sbin/, /usr/local/share/snmp, /usr/local/lib
2> Configuration ( not necessarily for this lab.)
execute /usr/local/bin/snmpconf for configuration
.conf files ( /usr/local/share/snmp/ )
snmpd.conf : snmp agent configuration
snmptrapd.conf : daemon configuration receiving agent trap message
snmp.conf : snmp application configuration

12. Lab. 1 : NET-SNMP install and configuration
3> Using basic SNMP manager applications
usage example
snmpget : by the SNMP GET_Request message
execute snmpgetnext, snmpwalk, snmptable, snmpset, snmptest, snmpstatus
[/home]# snmpget mcl.kaist.ac.kr sysUpTime.0 -c public RFC1213-MIB::sysUpTime.0 = Timeticks: ( ) 13 days, 12:15:08.97

13. Lab. 2 : Management Information Exchange between Agent and Manager via SNMP
MG-Soft MIB Browser
NET-SNMP
NET-SNMP

14. Lab. 2 : Management Information Exchange between Agent and Manager via SNMP
1> Use of MG-Soft MIB Browser (MG-Soft MIB Browser)

15. Lab. 2 : Management Information Exchange between Agent and Manager via SNMP
2> Manager Implementation (NET-SNMP)
Step A) Read and understand the ‘Programming a Simple Application’ part on the website.
URL:
Step B) Read and understand the ‘Programming a Synchronouse/Asynchronous Application’ part on the website
Step C) Write a program searching SNMP agents in a given range of IP addresses.

16. Lab. 2 : Management Information Exchange between Agent and Manager via SNMP
Step C) Write a program searching SNMP agents in a given range of IP addresses.
Hint 1 : Understand the programs for Step A and B briefly.
Hint 2 : You can check SNMP agent alive
Request any object variable for the agent
Check error message for the response

17. Lab. 2 : Management Information Exchange between Agent and Manager via SNMP
3> Adding a New MIB Module in Agent (MG-Soft MIB Browser)
Step 1) A ‘MicrowareOven’ MIB module is provided.
Step 2) Compile the MIB module using MG-Soft MIB compiler. Refer to the ‘MIB Compiler User Manual’ material.
Step 3) Add the MIB module to MG-Soft MIB browser.
Step 4) Check the MIB module in the MIB tree of MG-Soft MIB browser.

18. Lab.3 : Web-based Network Management
Web-based Network Management using CGI
Management Station
Web Browser
NET-SNMP : Agent
Agent
HTTP
Management Server
Http Server
SNMP
Manager
NET-SNMP : Manager

19. Lab.3 : Web-based Network Management
1> Programming a CGI script
Web based “snmpget” execution
HTML interface form
You can use any CGI script language.

20. Pre report and Main Report
1> What are the five areas of network management defined by the ISO?
2> Briefly describe CMIP, and briefly compare SNMP to CMIP.
3> Briefly describe SNMP for various version.
4> Describe network management model (Organization Model, Information Model, Communication Model and Functional Model). Refer to the chapter 6 on the website (sharp.kaist.ac.kr/~ccna4).
Main report
1> Follow above lab 1,2,3 and describe the result
2>Describe various network management architectures (Centralized/Hierarchical/Distributed Network Management Architecture). Refer to the chapter 6 on the website (sharp.kaist.ac.kr/~ccna4).