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Can some tell me the calculation that states that the total number of vlans is 4096

grapevine
Level 1
Level 1

Can some tell me the calculation that states that the total number of vlans is 4096? I used to remember now but forgot it now

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Mark Malone
VIP Alumni
VIP Alumni

first 12 bits are used 111111111111 = 4095 which 0-4095 is 4096 vlans

0 and 4095 are reserved

https://tools.ietf.org/html/rfc5517

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