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TOPIC: ip address

Subnet Zero woes 16 years 7 months ago #3413

It is true that Cisco tell you not to use subnet zero and yet they have it enabled. It actually gets worse as i teach CCNA 1-4 whist studying CCNP!!! In CCNP you can use subnet zero. There are times when my brain wants to drip out of my head!!!!!

Garrett

Re: ip address 16 years 7 months ago #3414

Oh in the CCNP they allow subnet zero ? Thats so random of them. I actually like s/n 0, its just more logical.. especially to anyone who uses computers much.. do you ever count in hex ?

0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10

Ever asked a cabbie for 3B back in change ?
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com

Re: ip address 16 years 5 months ago #3930

  • mew
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Not only can you use subnet zero you can use the all ones as well.

Go to Cisco.com and do a search for subnet zero or just click this link.

www.cisco.com/en/US/tech/tk648/tk361/tec...186a0080093f18.shtml

Re: ip address 16 years 5 months ago #3935

  • Chris
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I can confirm that Cisco assumes Subnet 0 is not usable on the latest CNNA course as I was teaching it a few months ago. I really do not see this changing in the near future either.

The fact the CCNP does make use of Subnet 0 also makes some sence. A CCNA candidate cannot be compared with a CCNP candidate in terms of knowledge and experience, and I believe that Cisco also see's it in a similar way, by 'allowing' the use of Subnet 0 in the CNNP course.

Topics like subnetting and IP Addressing run in the vains of a CCNP, where as a CCNA usually hears these networking terms and turn the other way :!:
Chris Partsenidis.
Founder & Editor-in-Chief
www.Firewall.cx
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