I am curious to understand how copper Ethernet keepalive are used and work
between a host or router and a switch?
Cisco default keepalive is 10 seconds with 3 or 5 retries, does this mean
30s or 50s to detect copper link failure??
I may miss something, thanks for your help.
The link failure detection doesn't occur with optical links because hardware
detection (Rx < Rx_min) is much more real time than keepalive timeout