Gerana

Gerência de Redes de Computadores Ana Cristina Benso da Silva

Situação Vigente ,[object Object],[object Object]

Gerência de Problemas ,[object Object],[object Object],[object Object]

Isolando o Problema ,[object Object],[object Object],[object Object]

Isolamento e Teste dos Problemas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Isolamento e Testes dos Problemas ,[object Object]

Buscando uma Solução ,[object Object],[object Object],[object Object],[object Object],[object Object]

Rede Distribuída ,[object Object],[object Object],[object Object]

Dificuldades ,[object Object],[object Object],[object Object]

Causas das Dificuldades ,[object Object],[object Object],[object Object],[object Object],[object Object]

Identificando o Problema ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Processo de Diagnóstico ,[object Object],[object Object],[object Object]

Primeiro Nível ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Segundo Nível ,[object Object],[object Object],[object Object],[object Object],Para auxiliar neste nível do processo de diagnóstico é necessário entre outras ferramentas, poder contar com a possibilidade de aprender pelas experiências passadas

Segundo Nível ,[object Object],[object Object],[object Object],[object Object]

Exemplos de Problemas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exemplos de Problemas ,[object Object],[object Object]

Metas do Gerenciamento ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sistemas de Gerenciamento de Rede ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Arquitetura Genérica ,[object Object],Agente Gerente Agente protocolo Coleta informações Monitoram Controlam Repassam informações Agente

Agente PROXY Gerente Proxy Agente SNMP Protocolo Proprietário

Arquitetura Gerente-Agente ,[object Object],[object Object],[object Object]

MIB - Management Base Information ,[object Object],Gerente Agente MIB

MIB ,[object Object],[object Object],[object Object],[object Object],[object Object]

Arquiteturas de Gerência ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Áreas Funcionais ,[object Object],[object Object],[object Object],[object Object],[object Object]

Gerenciamento de Falhas ,[object Object],[object Object],[object Object],[object Object]

Gerenciamento de Configuração ,[object Object],[object Object],[object Object],[object Object]

Gerenciamento de Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gerenciamento de Segurança ,[object Object],[object Object],[object Object]

Gerenciamento de Contabilização ,[object Object],[object Object],[object Object]

Arquitetura de gerenciamento OSI Processos aplicativos de gerenciamento de sistemas Management Information Base LME System Management Application Entity LME Camada de Apresentação LME Camada de sessão LME Camada de transporte LME Camada de rede LME Camada de enlace LME Camada física CMIP

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CMISE ACSE ROSE

Gerenciamento TCP/IP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gerenciamento TCP/IP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Protocolo SNMP ,[object Object],[object Object],[object Object]

ASN.1 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BER ,[object Object],[object Object],ex.: ex::= sequence { nome OCTET STRING, idade INTEGER } dados: { adao, 45 } dados codificados: 30 07 02 04 04 A D A O 02 01 45

Protocolo PROTOCOLO SNMP GET GET-NEXT SET GET-RESPONSE TRAP O protocolo SNMP é transportado pelo protocolo UDP Gerente Agente

TRAPS ,[object Object],COLDSART WARMSTART LINK DOWN LINK UP FAILURE OF AUTHENTICATION EXTERIOR GATEWAY PROTOCOL NEIGHBOR LOSS ENTERPRISE-SPECIFIC TRAP Gerente Agente

Get, Get-Next, Set, Get-Response

Erros ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Estrutura de MIB iso(1) org(3) dod(6) internet(1) dir mgmt(1) exp private mib2(1) sysDescr (1.3.6.1.1.1.1.1) system

[object Object],Macro OBJECT-TYPE SYNTAX Display String (size (0 .. 255)) ACCESS read-write STATUS mandatory DESCRIPTION “ ------ ” ::= { system 6 }

Macro OBJECT-TYPE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Organização da MIB raíz grupo1 grupo2 grupo3 obj1 obj2 tabela entrada obj1 obj2 obj3

MIB II - Grupos de Objetos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Outras MIBs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Operação SNMP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Objetos Relevantes ao Gerenciamento de Falhas ,[object Object],[object Object],[object Object],[object Object],[object Object]

Objetos Relevantes ao Gerenciamento de Falhas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Objetos Relevantes ao Gerenciamento de Configuração ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Objetos Relevantes ao Gerenciamento de Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exemplo ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exemplo penta% snmpi -a tchepoa.ufrgs.br snmpi> get sysDescr.0 sysDescr.0="GS Software (GS3-BFX), Version 9.0(2), SOFTWARE Copyright (c) 1986-1992 by cisco Systems, Inc. Compiled Thu 03-Sep-92 11:13 by mlw" snmpi> get ifNumber.0 ifNumber.0=16 snmpi> get ifDescr.4 ifDescr.4="Serial1" snmpi> get ifOperStatus.4 ifOperStatus.4=up(1) snmpi> get ipRouteNextHop.0.0.0.0 ipRouteNextHop.0.0.0.0=143.54.1.125

Exemplo ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SNMPv2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SNMPv2 Estação de Gerência SNMP Estação de Gerência SNMP Comunicação Gerente-a-Gerente Gerente de Nível médio Token-Ring Conexões diretas com agentes Ethernet Agente mestre Agente 1 Agente 2 Agente 3 SIstema Software Aplica- ções Operacional Comunic. HOST (WS, servidor, etc...)

Operações SNMPv2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SNMPv2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SNMPv3 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Segurança no SNMPv3 ,[object Object],[object Object],[object Object]

User-Based Security Model (USM) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

USM – Entidade Autoritativa ,[object Object],[object Object],[object Object],[object Object],[object Object]

USM - ... ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Criptografia de Dados ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

View Access Control Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Elementos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Contexto - Exemplo “ bridge1” “ bridge2” “ ” (default) Context some MIB Other MIB Context Bridge MIB Context Bridge MIB

RMON - Remote Monitoring MIB ,[object Object],[object Object],[object Object],[object Object]

Comentários sobre RMON ,[object Object],[object Object],[object Object],[object Object],RMON Roteador Estação de Gerência da rede

Metas do RMON ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Metas do RMON ,[object Object],[object Object],[object Object],[object Object],[object Object]

RMON - Grupos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RMON - Grupo Estatísticas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RMON - Grupo Estatísticas ,[object Object],[object Object]

Estatísticas ,[object Object],[object Object]

Estatísticas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Histórico ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Alarme ,[object Object],[object Object]

Host ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Host ,[object Object],[object Object],[object Object],[object Object],[object Object]

HostTopN ,[object Object],[object Object]

HostTopN ,[object Object],[object Object],[object Object],[object Object],[object Object]

Matriz ,[object Object],A B C Gera dados sobre: A->B, B->A, B->C, C->B, A->C, C->A

Matriz ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Matriz ,[object Object],[object Object],[object Object],[object Object],[object Object]

Filtro ,[object Object],[object Object],dataoffset = 0 pktData = 00 00 00 00 00 A5 00 00 00 00 00 BB pktDataMask = FF FF FF FF FF FF FF FF FF FF FF FF pktDataNotMask = 00 00 00 00 00 00 FF FF FF FF FF FF filtro de status pacote > 1.1518 (0), pacote < 64 (1), CRC ou alinhamento (2) filtro de dados

Filtro ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exemplos de Consulta (Filtro) ,[object Object],[object Object],[object Object]

Captura de Pacotes ,[object Object],[object Object]

Captura de Pacotes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Eventos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Eventos ,[object Object],[object Object],[object Object],[object Object],[object Object]

RMON 2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RMON 2 ,[object Object],[object Object],[object Object]

RMON 2 ,[object Object],[object Object],[object Object],[object Object]

RMON2 - Grupos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Programação SNMP ,[object Object],struct snmp_session *snmp_open (session) struct snmp_session *session; struct snmp_session { char *community; int community_len; int retries; long timeout; char *peername; short remote_port; short local_port; int (*callback) (); }

Programação SNMP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Programação SNMP ,[object Object],BEGIN { } pattern { actions } . . . END { }

Programação SNMP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Programação SNMP A B C D gerente 1 2 3 4 143.65.10.0

Programação SNMP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Implementação de Novos Agentes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Implementação de Novos Agentes especificação da MIB Kernel representação da MIB Funções de acesso compilador ASN.1 agente

Ferramentas de gerência de redes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gerência Pró-Ativa ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Agregando Inteligência à Gerência Pró-ativa ,[object Object],[object Object],[object Object]

Agregando Inteligência à Gerência Pró-ativa ,[object Object],[object Object],[object Object],[object Object],[object Object]

Sistemas especialistas aplicados à gerência de redes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Construção dos módulos inteligentes ,[object Object],[object Object],[object Object],[object Object]

Exemplo de regra: Nível de broadcast ,[object Object],[object Object],[object Object],[object Object]

Exemplo de regra: Nível de broadcast ,[object Object],[object Object]

Descoberta de novos problemas ,[object Object],[object Object],[object Object],[object Object],[object Object]

Descoberta de novos problemas ,[object Object],[object Object],[object Object],[object Object]

Aplicações de gerenciamento ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Software de terceiros Desenvolvimento próprio

Algumas Referências ,[object Object],[object Object],[object Object],[object Object],[object Object]

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