• Config Labs
    • Config Lab CCNA Vol 1 Part 2
      • Vol1 Ch04 CLI
      • Vol1 Ch06 Switch Mgmt.
      • Vol1 Ch07 Switch Interfaces
    • Config Lab CCNA Vol 1 Part 3
      • Vol1 Ch08 VLANs
      • Vol1 Ch10 RSTP
    • Config Lab CCNA Vol 1 Part 5
      • Vol1 Ch16 Routers
      • Vol1 Ch17 IPv4 Routes
      • Vol1 Ch18 InterVLAN
      • Vol1 Ch19 DHCP & Hosts
      • Vol1 Ch20 Troubleshooting IP
    • Config Lab CCNA Vol 1 Part 6
      • Vol1 Ch22 OSPF Basics
      • Vol1 Ch23 OSPF Options
      • Vol1 Ch24 OSPF Neighbors
    • Config Lab CCNA Vol 1 Part 7
      • Vol1 Ch27 IPv6 Addresses
      • Vol1 Ch29 IPv6 Routing
    • Config Lab CCNA Vol 2 Part 2
      • Vol2 Ch06 Standard ACLs
      • Vol2 Ch07 Extended ACLs
    • Config Lab CCNA Vol 2 Part 3
      • Vol2 Ch11 Port Sec.
      • Vol2 Ch12 Switch Inspections
    • Config Lab CCNA Vol 2 Part 4
      • Vol2 Ch13 Management
      • Vol2 Ch14 NAT/PAT
  • Other Labs
    • CML-Free-Labs
      • CML-Free Layer 2
      • CML-Free Layer 3
    • Ad Hoc Labs
  • Youtube
    • YouTube Playlists
    • Ad Hoc Labs
  • Q&A
    • IPv4 Ch. 11 Addressing Basics
    • IPv4 Ch. 12 Network Analysis
    • IPv4 Ch. 13 Mask Drills
    • IPv4 Ch. 14 Address Drills
    • IPv4 Ch. 15 Design Drills
    • IPv4 VLSM
    • IPv4-Adv Summary Routes
    • IPv6 Address Drills
    • OSPF Enabler
    • STP vs RSTP
  • General
    • Cert News
    • Content News
    • Archived News
    • Study Tips
  • Reference
    • Product Links
    • Config Labs
    • Final Review
    • Comparing Book Editions
Discussions to build real CCNA skills
  • Config Labs
    • Config Lab CCNA Vol 1 Part 2
      • Vol1 Ch04 CLI
      • Vol1 Ch06 Switch Mgmt.
      • Vol1 Ch07 Switch Interfaces
    • Config Lab CCNA Vol 1 Part 3
      • Vol1 Ch08 VLANs
      • Vol1 Ch10 RSTP
    • Config Lab CCNA Vol 1 Part 5
      • Vol1 Ch16 Routers
      • Vol1 Ch17 IPv4 Routes
      • Vol1 Ch18 InterVLAN
      • Vol1 Ch19 DHCP & Hosts
      • Vol1 Ch20 Troubleshooting IP
    • Config Lab CCNA Vol 1 Part 6
      • Vol1 Ch22 OSPF Basics
      • Vol1 Ch23 OSPF Options
      • Vol1 Ch24 OSPF Neighbors
    • Config Lab CCNA Vol 1 Part 7
      • Vol1 Ch27 IPv6 Addresses
      • Vol1 Ch29 IPv6 Routing
    • Config Lab CCNA Vol 2 Part 2
      • Vol2 Ch06 Standard ACLs
      • Vol2 Ch07 Extended ACLs
    • Config Lab CCNA Vol 2 Part 3
      • Vol2 Ch11 Port Sec.
      • Vol2 Ch12 Switch Inspections
    • Config Lab CCNA Vol 2 Part 4
      • Vol2 Ch13 Management
      • Vol2 Ch14 NAT/PAT
  • Other Labs
    • CML-Free-Labs
      • CML-Free Layer 2
      • CML-Free Layer 3
    • Ad Hoc Labs
  • Youtube
    • YouTube Playlists
    • Ad Hoc Labs
  • Q&A
    • IPv4 Ch. 11 Addressing Basics
    • IPv4 Ch. 12 Network Analysis
    • IPv4 Ch. 13 Mask Drills
    • IPv4 Ch. 14 Address Drills
    • IPv4 Ch. 15 Design Drills
    • IPv4 VLSM
    • IPv4-Adv Summary Routes
    • IPv6 Address Drills
    • OSPF Enabler
    • STP vs RSTP
  • General
    • Cert News
    • Content News
    • Archived News
    • Study Tips
  • Reference
    • Product Links
    • Config Labs
    • Final Review
    • Comparing Book Editions

IPv4 Ch. 15 Design Drills

BIG Subnet Design Exercise 1: Plan, Choose, and Configure IP Subnets and Addresses
By Wendell Odom
In 200-301 V1 Ch15: Subnet Design, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 15 Design Drills
Posted October 30, 2025

BIG Subnet Design Exercise 1: Plan, Choose, and Configure IP Subnets and Addresses

IP Subnetting includes a variety of math processes that answer specific questions. But how do those processes then apply to building networks? In this BIG exercise, I’ll pull some of those [...]

READ MORE
Choose Subnet Masks 1
By Wendell Odom
In 200-301 V1 Ch15: Subnet Design, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 15 Design Drills, Questions
Posted August 17, 2024

Choose Subnet Masks 1

This post presents questions that ask you to analyze design data about a network and then choose the one subnet mask to use for all subnets. If a company uses one subnet mask for all subnets of [...]

READ MORE
Mask Design Drill 2: Answers
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted April 24, 2012

Mask Design Drill 2: Answers

Today’s post just lists the answers to the Mask Design drill #2. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: [...]

READ MORE
Mask Design Drill 2
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted April 20, 2012

Mask Design Drill 2

Here’s another mask design drill, with the same idea as the previous two posts (chronologically speaking). For those of you with my ICND1 book, Chapter 16 spells out the details, and you can just [...]

READ MORE
Mask Design Drill 1: Answers
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted April 17, 2012

Mask Design Drill 1: Answers

Today’s post just lists the answers to the Mask Design drill #1. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: [...]

READ MORE
Mask Design Drill 1
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted April 13, 2012

Mask Design Drill 1

Today’s post changes gears, at least for those of you who read regularly when the posts show up. The last few weeks, I’ve focused more on broader prep issues, and today, we’ll get back to [...]

READ MORE
Answers: Subnet Design Exercise 3
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted February 7, 2012

Answers: Subnet Design Exercise 3

Today’s post shows the solution to subnet design exercise 3, specifically the IP subnets. This post isn’t all that meaningful without reading the other one first – after that, [...]

READ MORE
Subnet Design Exercise 3
By certskills
In CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted February 3, 2012

Subnet Design Exercise 3

  The subnet design exercises require that you do some subnetting math, but rather than reacting like you would in a help desk or support job role, you plan as if you were in the role of a [...]

READ MORE
Answer: Subnet Design Exercise 2
By certskills
In 200-301 V1 BBB Not in new books, CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted July 28, 2011

Answer: Subnet Design Exercise 2

Today’s post shows the solution to subnet design exercise 2, specifically the IP subnets. This post isn’t all that meaningful without reading the other one first – after that, [...]

READ MORE
Subnet Design Exercise 2
By certskills
In 200-301 V1 BBB Not in new books, CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted July 25, 2011

Subnet Design Exercise 2

Today’s exercise requires a little more thought than most of my exercise posts. In this case, you’ll start with two class B networks: 172.20.0.0 and 172.30.0.0. The problem also lists a set [...]

READ MORE
Answer Part 2: Subnet Design Exercise
By certskills
In 200-301 V1 BBB Not in new books, CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted July 6, 2011

Answer Part 2: Subnet Design Exercise

Today’s post picks up the discussion of the solution to the subnet design exercise I posted a while back. Start with the post for the original problem statement, and read from there!

READ MORE
Answer (Part 1): Subnet Design Exercise
By certskills
In 200-301 V1 BBB Not in new books, CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted July 4, 2011

Answer (Part 1): Subnet Design Exercise

Today’s post shows the beginning of a solution to the subnet design exercise I posted last week. This post isn’t all that meaningful without reading the other one first – after [...]

READ MORE
Subnet Design Exercise
By certskills
In 200-301 V1 BBB Not in new books, CCENT-OLD, IPv4 Ch. 15 Design Drills
Posted July 1, 2011

Subnet Design Exercise

For the US holiday weekend, I thought I’d leave you with a design exercise that requires a little more thought than most of my exercise posts. In this case, you’ll start with a class [...]

READ MORE
CCNA Video Playlist
Buy Me a Coffee (Thanks!)
Wendell – Youtube!
  • Home
  • Privacy Policy
  • Terms of Use
  • Disclaimer
© CertSkills Professional, LLC - Disclosure: If you click and spend money, we earn a small referral fee.