Consider a datagram network using 32-bit host addresses. Suppose a router has fo

Question

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:

11100000 000

11100000 00100000

11100000 0011

11100000 00110001 10

Describe how your forwarding table determines the appropriate link interface for datagrams with destination addresses:

11000000 00110001 01010001 01010101

11100001 00100000 00010001 01110111

Prefix Match Link Interface

11100000 000

0

11100000 00100000

1

11100000 0011

2

11100000 00110001 10

2 Otherwise 3

Explanation / Answer

Prefix match for first address is 3rd entry: link interface 2

Prefix match for second address is 5th entry: link interface 3

Destination Address Prefix Match Link Interface 11000000 00110001 01010001 01010101 11100000 2 11100001 00100000 00010001 01110111 otherwise 3

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.