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Samenvatting connecting networks
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Samenvatting Hoofdstuk 1-8 connecting networks computernetwerken 4. Er worden afbeeldingen gebruikt en de commando's worden ook vermeld.
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By: bencremer • 3 year ago
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COMPUTERNETWERKEN 4Lincy De Groote
,Inhoud
Computernetwerk 4: connecting networks ............................................................................................ 2
Hoofdstuk 1: WAN concepts ............................................................................................................... 2
1.1 WAN technologies Overview ............................................................................................... 2
1.2 Selecting a WAN technology ..................................................................................................... 8
Hoofdstuk 2: Point-to-point connections .......................................................................................... 16
2.1 Serial Point-to-point overview ................................................................................................ 16
2.2 PPP operation .......................................................................................................................... 19
2.3 PPP implementation ................................................................................................................ 24
2.4 Troubleshoot WAN Connectivity ............................................................................................. 27
Hoofdstuk 3: Branch Connections ..................................................................................................... 27
3.1 Remote Access Connections.................................................................................................... 27
3.2 PPPoE ....................................................................................................................................... 28
3.3 VPNs......................................................................................................................................... 30
3.4 GRE .......................................................................................................................................... 31
3.5 eBGP ........................................................................................................................................ 32
Hoofdstuk 4: Access Control Lists...................................................................................................... 33
4.1 Standard ACL operation and configuration ............................................................................. 33
4.2 Extended IPv4 ACLs ................................................................................................................. 36
4.3 IPv6 ACLs.................................................................................................................................. 37
4.4 Troubleshoot ACLs ................................................................................................................... 38
Hoofdstuk 5: Network Security and monitoring ............................................................................... 38
5.1 LAN security ............................................................................................................................. 38
5.2 SNMP ....................................................................................................................................... 42
5.3 Cisco Switch Port Analyzer (SPAN) .......................................................................................... 47
Hoofdstuk 6: Quality of Service ......................................................................................................... 49
6.1 QoS overview........................................................................................................................... 49
Hoofdstuk 7: Network Evolution ....................................................................................................... 58
7.1 Internet Of Things.................................................................................................................... 58
7.2 Cloud and Virtualization .......................................................................................................... 60
7.3 Network Programming ............................................................................................................ 64
Hoofdstuk 8: Network Troubleshooting............................................................................................ 69
8.1 Troubleshooting Methodology ................................................................................................ 69
8.2 Troubleshooting Scenarios ...................................................................................................... 74
1
,Computernetwerk 4: connecting networks
Hoofdstuk 1: WAN concepts
1.1 WAN technologies Overview
1.1.1 Purpose of WANS
1.1.1.1 Why a WAN?
• WAN’s verbinden LAN’s
• Een WAN gaat verder dan de geografische scope van een LAN
• Een WAN is van een service provider
• Een LAN is van een organisatie zelf
• Een organisatie moet betalen om gebruik te maken van de WAN services
1.1.1.2 Are WANs Necessary?
• Zonder WAN zouder er enkel aparte geïsoleerde LAN netwerken bestaan
• Voor een organisatie is het belangrijk dat ze kunnen communiceren ongeacht de
geografische scope of ligging
• Computergebruikers verzenden en ontvangen data van over een grote afstand
1.1.1.3 WAN topologies
• Point-to-point
o Link tussen 2 eindpunten
o Een directe fysieke link
• Hub-and-spoke
o Private link tussen meerdere sites
o 1 single interface naar de hub
▪ Kan gedeeld worden door alle spokes
o Spokes kunnen worden geconnecteerd door hub door gebruik van virtuele circuits en
routed interfaces in de hub
o Single homed topology
2
, • Full Mesh
o Elke site kan direct communiceren met een andere site
o Veel virtuele circuits moeten worden geconfigureerd
• Dual-homed topology
o Redundantie voor single-homed, hub-and-spoke topologie en loadbalancing
o Duurder dan single-homed
o Back-up service provider connections
o Heeft extra routers en switches nodig
o Moeilijk te implementeren
1.1.1.4 Evolving Networks
1.1.1.5 Small Office
• Small office
o Weinig werknemers
o Single LAN
o DSL internetverbinding
o
1.1.1.6 Campus Network
• Campus network
o Honderden werknemers
o VLAN’s (subnetwerken)
3
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