46 to 1500 bytes

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5
46 to 1500 bytes
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9
16
0
8
31
TYPE
CODE
CHECKSUM
IDENTIFIER
SEQUENCE NUMBER
OPTIONAL DATA
ICMP Echo message
10
16
0
8
31
UDP SOURCE PORT
UDP DESTINATION PORT
LENGTH
CHECKSUM
DATA
UDP DATAGARAM
11
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14
Destination
Reassembly Required
router
IP packet fragments
Fragments Created
router
IP packet
source
15
ftp client
ftp server

131.123.8.111
131.123.250.211
2349
21
2353
20
TCP Segments
Proto Local Address Foreign Address
TCP 131.123.8.1112349 131.123.250.21121
TCP 131.123.8.1112353 131.123.250.21120
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17
Send Segments
Receive Segments with ACK
Sliding Window Protocol
time
18
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19
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