L06-1

1

©D. Karvelas

SNMPv1 Network Management:Organization and Information Models

� Introduction to SNMP Network Management

� Network Management Examples

� Evolution of SNMP Management Documents

©D. Karvelas

SNMP Management

� Also referred to as Internet management

� It can manage any TCP/IP network

� It can also manage non-TCP/IP network elementsThrough proxy agents

� It is the most widely used NMS • Most net components have-built in network agents that can

respond to SNMP requests

• Enables automatic discovery/monitoring of new components

• Enables easy addition and configuration of net components

©D. Karvelas

2

AT&T Global Network Operations Center (NOC)

Network Management Examples

©D. Karvelas

Seattle

Los Angeles

Salt Lake City

Kansas

Houston

Chicago

Atlanta

New York

Virginia

Seattle

Los Angeles

Salt Lake City

Kansas

Houston

Chicago

Atlanta

New York

Virginia

3

Seattle

Los Angeles

Salt Lake City

Kansas

Houston

Chicago

Atlanta

New York

Virginia

� A NMS is a very powerful tool

Enables traffic monitoring, failure detection, network reconfiguration, remote troubleshooting

� A NMS can also cause performance degradation

©D. Karvelas

A Managed LAN Interconnection

172.16.46.0

Backbone Network

Hub 1172.16.46.2

Hub 2172.16.46.3

Router 1

192.168.252.0

Router 2

NMS192.168.252.110

192.168.252.1

172.16.46.1

172.16.252.1

©Addison-Wesley, Network Management, M. Subramanian

4

Title: System Information: 172.16.46.2Name or IP Address: 172.16.46.2

System Name :System Description : 3Com LinkBuilder FMS, SW version:3.02System Contact :System Location :System Object ID : .iso.org.dod.internet.private.enterprises.43.1.8.5System Up Time : (2475380437) 286 days, 12:03:24.37

System Information on 172.16.46.2 Hub

Note that “2475380437” is in units of hundredths of a second

System Information acquired by NMS

©D. Karvelas ©Addison-Wesley, Network Management, M. Subramanian

172.16.46.0

Backbone Network

Hub 1172.16.46.2

Hub 2172.16.46.3

Router 1

192.168.252.0

Router 2

NMS192.168.252.110

192.168.252.1

172.16.46.1

172.16.252.1


A Managed LAN Interconnection

Title: System Information: router1.gatech.eduName or IP Address: 172.16.252.1

System Name : router1.gatech.eduSystem Description : Cisco Internetwork Operating System Software

: IOS (tm) 7000 Software (C7000-JS-M), Version : 11.2(6), RELEASE SOFTWARE (ge1): Copyright (c) 1986-1997 by Cisco Systems, Inc.: Compiled Tue 06-May-97 19:11 by kuong

System ContactSystem Location :System Object ID : iso.org.dod.internet.private.enterprises.cisco.ciscoProducts..

cisco 7000System Up Time : (315131795 ) 36 days, 11:21:57.95

System Information on Router

System Information acquired by NMS (…contd)


5

Addresses on 172.16.46.2 Hub Ports

Index Interface IP address Network Mask NetworkAddress

Link Address

1 3Com 172.16.46.2 255.255.255.0 172.16 46.0 0x08004E07C25C2 3Com 192.168.101.1 255.255.255.0 192.168.101.0 <none>

Addresses acquired by SNMP NMS

172.16.46.0

Hub 1172.16.46.2

Hub 2172.16.46.3

Router 1172.16.46.1

172.162.251.1


Index

Interface IP Address NetworkMask

NetworkAddress

Link Address

1 LEC.1.0 192.168.3.1 255.255.255.0 192.168.3.0 0x00000C3920B4

2 LEC.3.9 192.168.252.1 255.255.255.0 192.168.252.0 0x00000C3920B4

3 Ethernet2/0 172.16.46.1 255.255.255.0 172.16.46.0 0x00000C3920AC

4 Ethernet2/3 172.16.49.1 255.255.255.0 172.16.49.0 0x00000C3920AF

5 Ethernet2/4 172.16.52.1 255.255.255.0 172.16.52.0 0x00000C3920B0

6 Ethernet1/2 172.16.55.1 255.255.255.0 172.16.55.0 0x00000C3920A6

7 Ethernet0/1 172.16.56.1 255.255.255.0 172.16.56.0 0x00000C39209D

8 Ethernet2/2 172.16.57.1 255.255.255.0 172.16.57.0 0x00000C3920AE

9 Ethernet1/1 172.16.58.1 255.255.255.0 172.16.58.0 0x00000C3920A5

10 Ethernet2/1 172.16.60.1 255.255.255.0 172.16.60.0 0x00000C3920AD

Addresses on Router 1 Ports (IP: 176.162.251.1)

Addresses acquired by SNMP NMS (…contd)


� Request for Comments (RFCs)Protocol drafts, proposed standards, draft standards, standards

� Subseries of RFCs- Standards (STD) RFCs

Identify RFCs which are indeed standards

- For Your Information RFCs (FYI)Document overviews and topics which are introductory

- STD/FYI have both STD/FYI numbers and RFC numbersSMI is RFC 1155 and STD 16

� Sources for RFCswww.ietf.org

Internet Documents


6

RFC 1067

SNMPManagementDocuments

RFC 1065SMI

RFC 1155STD 16

RFC 1066MIB I

RFC 1156RFC 1098

SNMPv1RFC 1157

STD 15Concise SMIRFC 1212

STD 16

SNMPv1Traps

RFC 1215

RFC 1442

SMIv2RFC 1902

RFC 1443SMIv2 Txt

ConventionsRFC 1903

RFC 1444SMIv2

ConformancesRFC 1904

RFC 1158MIB II

RFC 1213STD 17

RFC 1448SNMPv2

Protocol Ops1905

RFC 1449SNMPv2

Transport Map.RFC 1906

MIB II forSNMPv2

RFC 1907

SNMP Document Evolution


RFC 1067


RFC 1065SMI

RFC 1155STD 16

RFC 1066MIB I

RFC 1156RFC 1098

SNMPv1RFC 1157


STD 16

SNMPv1Traps

RFC 1215

RFC 1442

SMIv2RFC 1902

RFC 1443SMIv2 Txt

ConventionsRFC 1903

RFC 1444SMIv2


RFC 1158MIB II

RFC 1213STD 17

RFC 1448SNMPv2

Protocol Ops1905

RFC 1449SNMPv2


MIB II forSNMPv2

RFC 1907



RFC 1067


RFC 1065SMI

RFC 1155STD 16

RFC 1066MIB I

RFC 1156RFC 1098

SNMPv1RFC 1157


STD 16

SNMPv1Traps

RFC 1215

RFC 1442

SMIv2RFC 1902

RFC 1443SMIv2 Txt

ConventionsRFC 1903

RFC 1444SMIv2


RFC 1158MIB II

RFC 1213STD 17

RFC 1448SNMPv2

Protocol Ops1905

RFC 1449SNMPv2


MIB II forSNMPv2

RFC 1907



7

RFC 1067


RFC 1065SMI

RFC 1155STD 16

RFC 1066MIB I

RFC 1156RFC 1098

SNMPv1RFC 1157


STD 16

SNMPv1Traps

RFC 1215

RFC 1442

SMIv2RFC 1902

RFC 1443SMIv2 Txt

ConventionsRFC 1903

RFC 1444SMIv2


RFC 1158MIB II

RFC 1213STD 17

RFC 1448SNMPv2

Protocol Ops1905

RFC 1449SNMPv2


MIB II forSNMPv2

RFC 1907

