hc110118010 simple network management protocol

7/26/2019 HC110118010 Simple Network Management Protocol

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HUAWEI TECHNOLOGIES CO., LTD.

Simple Network

Management Protocol



Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.

Foreword

Management framework solutions for TCP/IP networks were introduced

as hardware and software increased, in order to support rapid network

growth. SNMP was originally adapted from a more simpler SGMP

protocol for use as the basis for common network management

throughout the system. SNMP has since experienced version revisions,

however remains the standard protocol for network management. The

SNMP framework, as well as the supporting Management Information

Base act as the foundation for network management, and are introduced

in support of a well rounded understanding of the network management

framework for TCP/IP.




Objectives

Upon completion of this section, trainees will be able to:

Describe the SNMP architecture and messaging behavior.

Describe the function of the Management Information Base (MIB).

Configure general SNMP parameters and traps.




SNMP Application

NM Station

SNMP

SNMP is used to communicate management information

between network management stations and network elements.




SNMP Architecture

Agent MIBObject

SNMP

Execute

Notify

Network Element

NMS

Agents exist within network elements through which NMS

interact to retrieve or alter parameter variables in the MIB




MIB Objects

internet(1)

directory(1) mgmt(2) experimental(3) private(4)

system(1) interface(2) at(3) ip(4) icmp(5)

mib-2(1)

……

……

…… …… …… …… ……

root

Ccitt(1) ISO(1) Joint-iso-ccitt(1)

Standard(0) registration authority(1) Member body(2) Identified organization(3)

dod(6)

enterprise(1)

The MIB acts as a virtual store for the management of objects.




SNMP Operation

NMS

UDP 162

UDP 161

UDP 161

UDP 161

get-request

get-response

get-next request

get-response

set-request

get-response

trap

SNMP Management Process SNMP Agent Process

Requests are received by an SNMP agent on UDP port 161.




SNMPv2c

system(1) interface(2) at(3) ip(4) icmp(5)

mib-2(1)

sysUpTime OBJECT-TYPESYNTAX TimeTicks

ACCESS read-only

STATUS mandatory

DESCRIPTION "The time (in 1/100th of a

second) since the network management

portion of the system was last re-

initialized.“

::= { system 3 }

ifSpeed OBJECT-TYPESYNTAX Gauge

ACCESS read-only

STATUS mandatory

DESCRIPTION "An estimate of

the interface's current bandwidth

in bits per second."

::= { ifEntry 5 }

ifOutOctets OBJECT-TYPE

SYNTAX Counter

ACCESS read-only

STATUS mandatory

DESCRIPTION "The total

number of octets

transmitted out of the

interface, including framing

characters."

::= { ifEntry 16 }

New Get-bulk request PDU and inform request included.

64 bit counters introduced to prevent counter wrap.




Get

Get Response

SNMPv3 security mechanisms support data integrity, data

origin authentication, confidentiality and timely message delivery

SNMPv3




SNMP Configuration

NMS RTA

G0/0/1

20.1.1.1/2410.1.1.1/24

[RTA]snmp-agent

[RTA]snmp-agent sys-info version v2c

[RTA]snmp-agent trap enable

[RTA]snmp-agent trap source G0/0/1




Configuration Validation

[RTA]display snmp-agent sys-info

The contact person for this managed node:

R&D Shenzhen, Huawei Technologies Co., Ltd.

The physical location of this node:

Shenzhen China

SNMP version running in the system:

SNMPv2c




Summary

Which version(s) of SNMP is/are enabled by default?

What is the destination port number that is used by an agent to

forward traps to a Network Management Station?



Thank youwww.huawei.com

hc110118010 simple network management protocol

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