1 / 11

Module 10: Routing Fundamentals and Subnets

Module 10: Routing Fundamentals and Subnets. 10.2.9 Small Router Purchase Subnetting Example 10.3.5a Basic Subnetting 10.3.5b Subnetting a Class A Network 10.3.5c Subnetting a Class B Network 10.3.5d Subnetting a Class C Network. Subnetting Exercise.

nathaniel-brock
Download Presentation

Module 10: Routing Fundamentals and Subnets

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Module 10: Routing Fundamentals and Subnets • 10.2.9 Small Router Purchase • Subnetting Example • 10.3.5a Basic Subnetting • 10.3.5b Subnetting a Class A Network • 10.3.5c Subnetting a Class B Network • 10.3.5d Subnetting a Class C Network

  2. Subnetting Exercise • A company has a class C network IP address and needs to subnet so that each Ethernet segment has 10 hosts. 70 hosts are currently needed. • Use IP address 200.12.15.0 • The following topology has been determined.

  3. Question • How many subnets are needed to create this structure? • How many bits do I need to borrow for subnetting? • How many bits are left for the host IDs? • What is the subnet mask? • What IP address can be allocated for the computers in segment 1 assuming, this has the lowest subnet value. • What is the broadcast address for this subnet? • Repeat for the other segments

  4. 12 Subnets are needed 1 per router interface (only 1 subnet needed between 2 directly connected router)

  5. If borrowing 2 bits 22 – 2 subnets available = 2 If borrowing 3 bits 23 – 2 subnets available = 6 If borrowing 5 bits 23 – 2 subnets available = 14

  6. Class C addresses have 8 bits available for use as host Ids. Using 4 for subnetting leaves 4 bits for hosts. The number of hosts per subnet is:- 28-2 -2 = 14 hosts per subnet More that is required (10 +1 for router)

  7. The subnet mask in binary is 11111111.11111111.11111111.11110000 Network portion Subnet Hosts This is 255.255.255.240 in dotted decimal notation

  8. The lowest subnet IP address start at 200 .12 . 15 .00010001 Network ID Subnet Hosts 17

  9. The highest subnet IP address is 200 .12 . 15 .00011110 Network ID Subnet Hosts 30

  10. The broadcast IP address for this subnet is 200 .12 . 15 .00011111 Network ID Subnet Hosts 31

More Related