Answers: IPv4 Addresses 5

certskills
By certskills September 19, 2012 09:00

Look back at the original problem statement, calculate the IP addresses to be used by routers and hosts, and create the router configuration for in the interfaces in the network diagram. Today’s post shows the answers.

Answers

Your first task was to calculate the IP addresses to use, based on requirements. For reference, Table 1 lists the results. Note that all subnets use a /26 (255.255.255.192) mask in this particular exercise.

Table 1: IPv4 Addresses

Location IP/mask
R1 F0/0 172.18.1.62 /26
R1 S0/0/0 172.18.8.125 /26
R1 S0/0/1 172.18.8.189 /26
R2 F0/0 172.18.2.126 /26
R2 S0/0/0 172.18.8.253 /26
R2 S0/0/1 172.18.8.126 /26
R3 F0/0 172.18.3.190 /26
R3 S0/0/0 172.18.8.190 /26
R3 S0/0/1 172.18.8.254 /26

 

To create the configuration, all you have to do is add the ip address command to each interface in configuration mode. Easy once you’d done it a few times; here are the answers to be complete.

Example 1: R1 IPv4 Address Configuration

 

Example 2: R2 IPv4 Address Configuration

 

Example 3: R3 IPv4 Address Configuration

 

IPv4 Addresses 5
STP Puzzle 3
certskills
By certskills September 19, 2012 09:00
Write a comment

5 Comments

  1. Bav July 2, 10:37

    Maybe I was reading it wrong but I don’t see how requirement 4 is actually a requirement. All the bank boxes are relating to Router interfaces, not hosts. Is that right?

    Reply to this comment
    • CCENTSkills July 5, 09:33

      Bav,
      I see your point. I’m sure I just copy/pasted the intro text from a similar lab – I think I made five or six of these similar labs back in 2012, and a few had hosts in them.
      Wendell

      Reply to this comment
  2. JP August 6, 14:22

    The host address should be the first available address on the network per #4
    4. Hosts should use the lowest IPV4 address in the subnet, with the same tiebreaker concept as stated in #2.
    R1 f0/0 should be 172.18.1.1 not 172.18.1.62
    same for R2 and R3

    Reply to this comment
    • certskills Author August 10, 12:53

      JP,
      My reading of the lab states that requirement #2 tells us to use the highest IP addresses in the subnets for routers, and the lowest for hosts. I think you’re applying the lab requirement #4 to both hosts and routers. So I think the suggested answer’s router IP addresses are correct per the lab requirements.

      Reply to this comment
View comments

Write a comment

Leave a Reply to certskills Cancel reply

Subscribe

Subscribe to our mailing list and get interesting stuff and updates to your email inbox.

Thank you for subscribing.

Something went wrong.

Search

Categories