Loop detection method and device
A loop detection and forwarding path technology, applied in the network field, can solve problems such as time-consuming and low efficiency, and achieve the effect of improving inspection efficiency
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[0054] The embodiments of the present invention will be described below in conjunction with the drawings.
[0055] The device referred to in the embodiment of the present invention may be a network-side edge device, or a router, or a packet transport network (Package Transport Network, PTN) device, etc.
[0056] The Time To Live (TTL) field referred to in the embodiment of the present invention is used to indicate the maximum number of network segments that an IP data packet is allowed to pass through before being discarded by a router, that is, the maximum number of hops that an IP data packet can forward in a computer network . TTL is set by the sending host to prevent data packets from continuously circulating on the IP Internet network forever. The maximum value of TTL is 255.
[0057] Specifically, the TTL field is set by the sender of the IP data packet. On the entire forwarding path of the IP data packet from the source address to the destination address, the router will mod...
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