P5. Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: Destination Address Range Link Interface 11100000 00000000 00000000 00000000 through 11100000 00111111 11111111 11111111

Computer Networking: A Top-Down Approach (7th Edition)
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Chapter1: Computer Networks And The Internet
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P5. Consider a datagram network using 32-bit host addresses. Suppose a router has four links,
numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows:
Destination Address Range
Link Interface
11100000 00000000 00000000 00000000
through
11100000 00111111 11111111 11111111
11100000 01000000 00000000 00000000
1
through
11100000 01000000 11111111 11111111
11100000 01000001 00000000 00000000
2
through
11100001 01111111 11111111 11111111
otherwise
3
a. Provide a forwarding table that has five entries, uses longest prefix matching, and
forwards packets to the correct link interfaces.
b. Describe how your forwarding table determines the appropriate link interface for
datagrams with destination addresses:
11001000 10010001 01010001 01010101
11100001 01000000 11000011 00111100
11100001 10000000 00010001 01110111
Transcribed Image Text:P5. Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: Destination Address Range Link Interface 11100000 00000000 00000000 00000000 through 11100000 00111111 11111111 11111111 11100000 01000000 00000000 00000000 1 through 11100000 01000000 11111111 11111111 11100000 01000001 00000000 00000000 2 through 11100001 01111111 11111111 11111111 otherwise 3 a. Provide a forwarding table that has five entries, uses longest prefix matching, and forwards packets to the correct link interfaces. b. Describe how your forwarding table determines the appropriate link interface for datagrams with destination addresses: 11001000 10010001 01010001 01010101 11100001 01000000 11000011 00111100 11100001 10000000 00010001 01110111
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