TP-Link TL-SL5428E Reference Manual page 195

Gzcorng"
Enable the loopback detection function of Gigabit Ethernet ports 25-27:
VN/UN764:G*eqphki+%kpvgthceg"tcpig"ikicdkvGvjgtpgv"1/0/25-27
VN/UN764:G*eqphki/kh/tcpig+%nqqrdcem/fgvgevkqp"
nqqrdcem/fgvgevkqp"eqphki"
Fguetkrvkqp"
The nqqrdcem/fgvgevkqp" eqphki command is used to configure the
process-mode and recovery-mode for the ports by which the switch copes with
the detected loops.
U{pvcz"
nqqrdcem/fgvgevkqp" eqphki" [ rtqeguu/oqfg" { alert | port-based } ]
[ tgeqxgt{/oqfg { auto | manual } ]
Rctcogvgt"
process-mode —— The mode how the switch processes the detected loops."
cngtv<"when a loop is detected, display an alert.
rqtv"dcugf< when a loop is detected, display an alert and block the port.
recovery-mode —— The mode how the blocked port recovers to normal status.
cwvq< block status can be automatically removed after recovery time.
ocpwcn< block status can only be removed manually.
Eqoocpf"Oqfg"
Interface Configuration Mode (interface fastEthernet / interface range
fastEthernet / interface gigabitEthernet / interface range gigabitEthernet)
Gzcorng"
Configure
recovery-mode as manual for Gigabit Ethernet port 25:
VN/UN764:G*eqphki+%kpvgthceg"ikicdkvGvjgtpgv"1/0/25
VN/UN764:G*eqphki/kh+%nqqrdcem/fgvgevkqp"eqphki"rtqeguu/oqfg"port-based
tgeqxgt{/oqfg"manual
VN/UN764:G LgvUvtgco" N4" Ocpcigf" Uykvej" ENK" Iwkfg
the loopback detection
178
process-mode as port-based and