ip subnet-zero allows the subnet with a zero bit to be
used. For example, 10.0.0.0/24 would normally be
disallowed per RFC, but subnet-zero allows its usage.
ip classless allows the router to operate with summary
addresses within the major network boundary. For
example, consider a router with
ip subnet zero is required when you want to use subnet zero i.e. 192.168.0.1
with a subnet mask of 255.255.255.0 is the zero subnet and can only be used
when you have ip subnet zero command. ip classless is another for routing,
with this if a packet comes in for a destination which is not
What is the difference between Classless and Classful ?
"McCallum, Robert" [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
.uk...
ip subnet zero is required when you want to use subnet zero i.e.
192.168.0.1
with a subnet mask of 255.255.255.0 is the zero subnet and can only be
used
Unfortunately, Doyle gives about the best description I have thus read. If
I recall, Bruce Caslow hits this a little in his book too.
I have just posted an answer to a thread that gives one use of IP classless.
Once you begin your quest of CCIE, you will encounter this in such a way it
is
In article [EMAIL PROTECTED], "Bill"
[EMAIL PROTECTED] wrote:
ip subnet-zero allows you to use the .0 subnetwork so if you break
192.168.0.0 into /27s, your first network would typically start at
192.168.32.0 while with subnet-zero enabled you can use 192.168.0.0. As
I understand it, this is
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