PASSHOT Latest Cisco CCNP Enterprise 300-430 ENWLSI Dumps Explanation

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What is the difference between MTU and PMTU?

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MTU (Maximum Transmission Unit) The maximum transmission unit is used to notify the other party of the maximum size of the data service unit that can be accepted, and to indicate the size of the payload that the sender can accept. Both Ethernet and 802.3 have a limit on the length of the data frame, and their maximum values  are 1500 bytes and 1492 bytes, respectively. This characteristic of the link layer is called MTU, which is the maximum transmission unit. Most types of networks have an upper limit on the length of several frames. If there is a datagram to be transmitted in the IP layer, and the length of the data frame is greater than the MTU of the link layer, then the IP layer needs to be fragmented (fragmentation), that is, the datagram is divided into dry slices, so that each slice is smaller than MTU. Different data links have different maximum transmission units (MTU). Since the IP protocol is the upper layer of the data link, it must be able to be used wi...
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