rvzoqa.blogg.se - Wireshark ip header checksum

Source Address − 32-bit address of the Sender (or source) of the packet.

Header Checksum − This field is used to keep checksum value of entire header which is then used to check if the packet is received error-free.

For example protocol number of ICMP is 1, TCP is 6 and UDP is 17.

Protocol − Tells the Network layer at the destination host, to which Protocol this packet belongs to, i.e.

At each hop, its value is decremented by one and when the value reaches zero, the packet is discarded. Time to Live − To avoid looping in the network, every packet is sent with some TTL value set, which tells the network how many routers (hops) this packet can cross.Fragment Offset − This offset tells the exact position of the fragment in the original IP Packet.In this 3-bit flag, the MSB is always set to ‘0’. Flags − As required by the network resources, if IP Packet is too large to handle, these ‘flags’ tells if they can be fragmented or not.to identify original IP packet they belong to. Identification − If IP packet is fragmented during the transmission, all the fragments contain same identification number.Total Length − Length of entire IP Packet (including IP header and IP Payload).

ECN − Explicit Congestion Notification It carries information about the congestion seen in the route.DSCP − Differentiated Services Code Point this is Type of Service.IHL − Internet Header Length Length of entire IP header.