### Networking Exercise: Interconnecting LANs**3. Consider three LANs interconnected by two routers, as illustrated in Figure 1.****Figure 1:** A diagram shows three subnets, each with two hosts, interconnected by two routers. Subnet 1 contains Hosts A and B, Subnet 2 contains Hosts C and D, and Subnet 3 contains Hosts E and F.#### Tasks:(a) **Assign IP Addresses:** - **Subnet 1**: Use IP addresses of the form 192.168.1.xxx. - **Subnet 2**: Use IP addresses of the form 192.168.2.xxx. - **Subnet 3**: Use IP addresses of the form 192.168.3.xxx.(b) **Assign MAC Addresses:** - Assign unique MAC addresses to all network adapters within the subnets.(c) **Sending an IP Datagram from Host E to Host B:** - Imagine all the ARP tables are currently up to date. - Detail each step involved in transmitting the datagram successfully.(d) **Handling an Empty ARP Table:** - Repeat the datagram sending operation from Host E to Host B, assuming the ARP table on the sending host is initially empty, while others remain updated. - Enumerate the revised steps under this condition. This exercise aids in understanding IP and MAC addressing and the operation of ARP in network communication.

SOLUTION -(A) The network consists of 3 LAN (Local Area Networks) which are interconnected by 2…

3. Consider three LANs interconnected by two routers, as shown in Figure 1. Subnet 2 Figure 1 Subnet 3 (a) Assign IP addresses to all of the interfaces. For Subnet 1 use addresses of the form 192.168.1.xxx; for Subnet 2 uses addresses of the form 192.168.2.xxx; and for Subnet 3 use addresses of the form 192.168.3.xxx. (b) Assign MAC addresses to all of the adapters. (c) Consider sending an IP datagram from Host E to Host B. Suppose all of the ARP tables are up to date. Enumerate

3. Consider three LANs interconnected by two routers, as shown in Figure 1. Subnet 2 Figure 1 Subnet 3 (a) Assign IP addresses to all of the interfaces. For Subnet 1 use addresses of the form 192.168.1.xxx; for Subnet 2 uses addresses of the form 192.168.2.xxx; and for Subnet 3 use addresses of the form 192.168.3.xxx. (b) Assign MAC addresses to all of the adapters. (c) Consider sending an IP datagram from Host E to Host B. Suppose all of the ARP tables are up to date. Enumerate

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

### Networking Exercise: Interconnecting LANs

**3. Consider three LANs interconnected by two routers, as illustrated in Figure 1.**

**Figure 1:** A diagram shows three subnets, each with two hosts, interconnected by two routers. Subnet 1 contains Hosts A and B, Subnet 2 contains Hosts C and D, and Subnet 3 contains Hosts E and F.

#### Tasks:

(a) **Assign IP Addresses:**
- **Subnet 1**: Use IP addresses of the form 192.168.1.xxx.
- **Subnet 2**: Use IP addresses of the form 192.168.2.xxx.
- **Subnet 3**: Use IP addresses of the form 192.168.3.xxx.

(b) **Assign MAC Addresses:**
- Assign unique MAC addresses to all network adapters within the subnets.

(c) **Sending an IP Datagram from Host E to Host B:**
- Imagine all the ARP tables are currently up to date.
- Detail each step involved in transmitting the datagram successfully.

(d) **Handling an Empty ARP Table:**
- Repeat the datagram sending operation from Host E to Host B, assuming the ARP table on the sending host is initially empty, while others remain updated.
- Enumerate the revised steps under this condition.

This exercise aids in understanding IP and MAC addressing and the operation of ARP in network communication.

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