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Loop Guard 4 года назад


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Loop Guard

Cisco has added two features to detect or prevent the unexpected loss of BPDU' UDLD and Loop Guard Suppose a switch port which is neither designated nor the root port which means its a non-designated or a blocking port Assume if that port is not receiving the BPDU for some unknown reason ( it can be a cabling issues) In that switch port will wait for the Max-Age timer to expire , it will flush the BPDU from the memory and moves the current port (blocking port ) into forwarding Port which will lead to a switching loop To prevent this situation we are enabling loop guard which main function is to track the sudden loss of BPDU on a non-designated port

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