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VLSM less than /24
jmasterj206
Member Posts: 471
in CCNA & CCENT
All the materials I have read on VLSM on concentrate on /24 - /30 for VLSM. What happens when you need 500 hosts? I know you would use a /23, but why does the material only seem to focus on the others. Is it because ICND2 is based on small to medium sized networks?
WGU grad
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Optionstheodoxa
Member Posts: 1,340 ■■■■□□□□□□
I don't know, but I use a /23 at home (172.16.0.0/23)...so that I can use 172.16.0.x for DHCP (Laptops, Tablet, Phone, Wii, TiVo, etc...) and 172.16.1.x for Static Addresses for things such as Servers, Cisco Equipment, and my Media Center PC.R&S: CCENT → CCNA → CCNP → CCIE [ ]
Security: CCNA [ ]
Virtualization: VCA-DCV [ ] -
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RouteMyPacket
Member Posts: 1,104
I don't know, but I use a /23 at home (172.16.0.0/23)...so that I can use 172.16.0.x for DHCP (Laptops, Tablet, Phone, Wii, TiVo, etc...) and 172.16.1.x for Static Addresses for things such as Servers, Cisco Equipment, and my Media Center PC.
What is your reasoning for using a /23? How do you have it cut up to justify a /23?Modularity and Design Simplicity:
Think of the 2:00 a.m. test—if you were awakened in the
middle of the night because of a network problem and had to figure out the
traffic flows in your network while you were half asleep, could you do it? -
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ChickenNuggetz
Member Posts: 284
jmasterj206 wrote: »All the materials I have read on VLSM on concentrate on /24 - /30 for VLSM. What happens when you need 500 hosts? I know you would use a /23, but why does the material only seem to focus on the others. Is it because ICND2 is based on small to medium sized networks?
VLSM is presented in easiest light in the textbooks, so it makes sense to use /24-/30 to do this. Check out the link below if you want more practice:
Use this website: Practice Subnet Skills: Design a VLSM Network
It will randomly generate a VLSM scenario for you. Often the VLSM address schema you'll be figuring out will be for large amounts of hosts. Its good practice!:study: Currently Reading: Red Hat Certified Systems Administrator and Engineer by Ashgar Ghori
Certifications: CCENT; CCNA: R&S; Security+
Next up: RHCSA -
Optionstheodoxa
Member Posts: 1,340 ■■■■□□□□□□
RouteMyPacket wrote: »What is your reasoning for using a /23? How do you have it cut up to justify a /23?
It makes static addressing simpler by allowing me to use any number (1 - 254) in the final octet without having to worry about it conflicting with an address assigned [by DHCP] to a Laptop, Desktop, Tablet, Phone, Game Console, or Media Device.R&S: CCENT → CCNA → CCNP → CCIE [ ]
Security: CCNA [ ]
Virtualization: VCA-DCV [ ]