HP 10BASE-T Guia do Utilizador descarregar pdf (Página 46)

Hub Operation

The HP AdvanceStack Hub-16U is a multiport repeater that conforms to the

IEEE 802.3 repeater specification. Data signals coming into the hub from

any of its ports are automatically regenerated and transmitted to all the

other hub network ports. The hub regenerates the data without interpreting

the contents, so it can be used in either IEEE 802.3 or Ethernet networks

and with any upper-level protocol.

Collision Detection

The hub also performs collision detection. A collision occurs when two

nodes try to transmit at the same time. When the hub detects a collision, it

stops repeating the colliding transmissions and starts transmitting a jamming

signal. The jamming signal tells the transmitting nodes that a collision has

occurred. The colliding nodes then stop transmitting for a random amount of

time before attempting to retransmit the data. Once the collision condition is

removed, the hub stops transmitting the jamming signal and normal

operation is resumed.

Hub Reference

3-4

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 69 70

Sem comentários

HP 10BASE-T Guia do Utilizador Página 46