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How does keepalives functioning on 100BaseT full-duplex Interfaces?

uniemeyer
Level 1
Level 1

What does a router do when it sends keepalives on a Fastethernet in full-duplex-mode and what does he checks for?

THX in advance

1 Reply 1

uniemeyer
Level 1
Level 1

I found the answer.

The router sends CTP frames (ethertype 0x9000)

to its own hardware address and get that back from the switch.

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