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16 Februari 2009

Ealah yo yo...

Ternyata cuma gini tok! Dulu pas kuliah gak jelas sih, coba ngerti prinsipnya...gampang bgt!

Advantages of network bridges

  • Self configuring
  • Primitive bridges are often inexpensive
  • Reduce size of collision domain by microsegmentation in non switched networks
  • Transparent to protocols above the MAC layer
  • Allows the introduction of management - performance information and access control
  • LANs interconnected are separate and physical constraints such as number of stations, repeaters and segment length don't apply
  • it also helps minimize high bandwidth

Disadvantages of network bridges

  • Does not limit the scope of broadcasts
  • Does not scale to extremely large networks
  • Buffering introduces store and forward delays - on average traffic destined for bridge will be related to the number of stations on the rest of the LAN
  • Bridging of different MAC protocols introduces errors
  • Because bridges do more than repeaters by viewing MAC addresses, the extra processing makes them slower than repeaters
Subnetting
Kemarin saya bingung artinya /24 di belakang ip tuh apa. Ternyata itu jumlah bit yang dipakai untuk mengidentifikasi ip network. Jadi klo ada tulisan /24 artinya net masknya: 11111111 11111111 11111111 0000000 = 255.255.255.0
Coba lihat, bit satunya ada 24 bit. Untuk menghitung jumlah host, tinggal di ubah aja bit-bit nol menjadi 1 dan bit 1 menjadi nol, ya itu lah total host yang tersedia. Jadi /24 akan menhasilkan jumlah host 255 (254 available)

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