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Is this a correct way to subnet?

mera2me
Level 1
Level 1

Hey.

 

So i´ve been doing some theoretical exercises for  Subnetting for IPv4 & IPv6. Is this a correct way to subnet? 

 

IPv4 Scenario:  Subnet 193.10.30.0/24 after these requierments.  

 

1 Network : 120 Hosts 

2 Network : 28 Host 

3: Network : 25 Host

4 Linknet 1    

5 Linknet 2  

Linknet 1 & 2 consist of 3 routers (a > b > c)

 

Network Address     CIDR    First Host                 Last Host                    Broadcast Address   Subnet mask 

193.10.30.0             /29      193.10.30.1            193.10.30.6                193.10.30.7              255.255.255.248

193.10.30.128        /25       193.10.30.129        193.10.30.254            193.10.30.255          255.255.255.128

193.10.30.32         /27        193.10.30.33          193.10.30.62              193.10.30.63            255.255.255.224

193.10.30.64        /27         193.10.30.65          193.10.30.94             193.10.30.95             255.255.255.224

 

Question to you guys:  The three routers now represented as a /29 should i do (2) /30 instead, or is this still a valid subnetting? 

 

IPV6 : Create 5 IPv6 networks with the prefix /64 from 2001:6b0:29::/48

 

2001:6b0:29:0001::  /64

2001:6b0:29:0002:: /64

2001:6b0:29:0003:: /64

2001:6b0:29:0004:: /64

2001:6b0:29:0005:: /64

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Accepted Solutions

balaji.bandi
Hall of Fame
Hall of Fame

yes, you can do with the subnet of 255.255.255.252 - which has 2 usable IP.

 

for IPv6 - i am confused, you want to have 5 subnets from /48 or you want to make /64 subnet from /48

 

i recommend a good tool - make your life easy for IPv6.

 

https://www.site24x7.com/tools/ipv6-subnetcalculator.html

BB

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2 Replies 2

balaji.bandi
Hall of Fame
Hall of Fame

yes, you can do with the subnet of 255.255.255.252 - which has 2 usable IP.

 

for IPv6 - i am confused, you want to have 5 subnets from /48 or you want to make /64 subnet from /48

 

i recommend a good tool - make your life easy for IPv6.

 

https://www.site24x7.com/tools/ipv6-subnetcalculator.html

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

"for IPv6 - i am confused, you want to have 5 subnets from /48 or you want to make /64 subnet from /48" 

 

Given the 2001:6b0:29::/48 i want to create  5 (subnets) networks with the prefix /64. 

 

 

"Edit"  Checked out your tool. My IPv6 subnetting seems legit  it output....

 

2001:6b0:29:1::/64

2001:6b0:29:2::/64 

.......

.....

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