Nov30

Hierarchical Network

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Hierarchical Network

Core Layer Switch features:

  • Layer 3 support
  • Very High forwarding rate
  • Gigabit Ethernet / 10 Gigabit Ethernet
  • Redundant components
  • Link Agregation
  • QOS (Quality of Service)

 

Distribution Layer Switch features:

  • Layer 3 support
  • High forwarding rate
  • Gigabit Ethernet / 10 Gigabit Ethernet
  • Redundant components
  • Security Policies / Access Control List
  • Link Agregation
  • QOS (Quality of Service)

 

Access Layer Switch features:

  • Port Security
  • VLANs
  • Fast Ethernet / Gigabit Ethernet
  • Power Over Ethernet (POE)
  • Link Agregation
  • QOS (Quality of Service)
Nov29

VLSM scenario 1

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VLSM scenario 1

Solo 650 host, Jogja 350 host, Jakarta (HQ) 2010 host. IP 10.25.0.0/16. HQ terhubung ke masing-masing cabang.

1. urutkan dari jumlah host yang paling besar, 2010, 650, 350, 2, 2. kemudian cari 2 pangkat x yang memenuhi jumlah host.

211=2048 (2010)

210=1024 (650)

29=512 (350)

22=4 (2)

22=4 (2)

2. buat tabelnya

host network 1st host Last host broadcast Subnet mask
2010 10.25.0.0 10.25.0.1 10.25.7.254 10.25.7.255 /21 atau 255.255.248.0
650 10.25.8.0 10.25.8.1 10.25.11.254 10.25.11.255 /22 atau 255.255.252.0
350 10.25.12.0 10.25.12.1 10.25.13.254 10.25.13.255 /23 atau 255.255.254.0
2 10.25.14.0 10.25.14.1 10.25.14.2 10.25.14.3 /30 atau 255.255.255.252
2 10.25.14.4 10.25.14.5 10.25.14.6 10.25.14.7 /30 atau 255.255.255.252
Dec3

OSI Layer dan TCP/IP Model

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OSI Layer dan TCP/IP Model

OSI (Open System Interconection) terdiri dari 7 lapisan (layer), yang masing-masing layer memiliki fungsi tersendiri.

7 Lapisan OSI :
Application (Layer 7)
Presentation (Layer 6)
Session (Layer 5)
Transport (Layer 4)
Network (Layer 3)
Data Link (Layer 2)
Physical (Layer 1)

TCP/IP Model :
Application
Transport
Internet
Network