router with IP address 125.45.23.12
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
A router with IP address 125.45.23.12 and Ethernet physical address 23:45:AB:4F:67:CD has received a packet for a host destination with IP address 125.11.78.10 and Ethernet phys-ical address AA:BB:A2:4F:67:CD.
(I) Show the entries (a, b, c, d, e in Figure 1(a)) in the ARP request packet sent by therouter. Assume no subnetting.
(II) The packet made in part (I) is encapsulated in a data link frame. Fill in the fields fand g in Figure 1(a).
(III) Show the entries (h, i, j, k, l in Figure 1(b)) in the ARP reply packet sent in responseto part (I).
(IV) The packet in part (III) is encapsulated in a data link frame. Fill in the fields m andn.
Transcribed Image Text:Ox0001
Ox0800
Ox06
Ox04
a:
b:
C:
d:
Preamble
f.
and SFD
Data 28
g.
Ox0806
CRC
bytes
From the router to the host destination
(a) ARP request
Ox0001
Ox0800
Ox06
Ox04 h:
i:
j:
k:
I:
Preamble
m:
and SFD
n:
Ox0806
Data
CRC
From the host destination to the router
(b) ARP reply
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