We know that modern Ethernet is full-duplex. At the same time we can send Or receive the signal. Suppose I consider one Lan where multiple hosts are connected by different ports of switch.

Let's take host A host connected switch port N via baseband link. Consider A starts sending signal to switch and at the same time switch also starts sending signal to A.

My question is both host A and switch uses entire bandwidth of that baseband link at the same time or uses portion of the bandwidth of this baseband link?

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  • \$\begingroup\$ @brhans "the entire link"-- mean respective link between two devices, here MN. \$\endgroup\$
    – S. M.
    Feb 24, 2022 at 12:56
  • \$\begingroup\$ @brhans all pairs are ethernet cable. If I choose fast Ethernet (100 mbps) . \$\endgroup\$
    – S. M.
    Feb 24, 2022 at 13:11
  • 2
    \$\begingroup\$ Nevermind. I give up. \$\endgroup\$
    – brhans
    Feb 24, 2022 at 13:16

1 Answer 1


An Ethernet packet uses the full bandwidth of an Ethernet cable. You can only send one packet at a time, and receive one packet at a time.

  • \$\begingroup\$ when two packets meet at point X ,say in between the link MN then also at that point X also uses full bandwidth ? \$\endgroup\$
    – S. M.
    Feb 24, 2022 at 15:23

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