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ccna > Vlans > Flashcards

Vlans Flashcards

1
Q

802.1Q tag size

A

4 bytes

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2
Q

TPID

A

Tag protocol identifier
16 bits
Dot1q tag field
Identifies protocol being used, fixed value of 0x8100 in dot1q

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3
Q

Dot1q tag: TPID fixed value

A

0x8100

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4
Q

PCP

A

Priority code point
Dot1q tag field
3 bits
Used for class of service

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5
Q

DEI

A

Drop eligible indicator
Dot1q tag field
1 bit
Indicates that frame can be dropped if network is congested

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6
Q

Reserved vlans

A

0, 4095

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7
Q

Usable Vlan range

A

1 to 4094

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8
Q

Normal Vlan range

A

1 to 1005

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9
Q

Extended Vlan range

A

1006 to 4094

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ccna (37 decks)

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