IP FRAGMENTATION, REASSEMBLY, FLOW CONTROL, TOS, AND TTL

Consider the output of the following ifconfig command:

bash-2.03# ifconfig hme0 
hme0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2 
       inet 192.168.2.222 netmask ffffff00 broadcast 192.168.2.255 
       ether 8:0:20:9e:f0:50 
bash-2.03#

You might have noticed a field with the name MTU (Maximum Transmit Units) in the output of the ifconfig command. This field shows the maximum length of a data frame that can be transmitted on a physical interface. The value of this field in the previous command is 1500, which shows that a frame of a maximum length of 1500 bytes can be sent through interface hme0. Before sending any packet through an interface, IP checks the MTU value. If the ...

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