Sponsored Content
Full Discussion: Subnetting
Special Forums IP Networking Subnetting Post 302993556 by drysdalk on Saturday 11th of March 2017 05:36:15 AM
Old 03-11-2017
Hi,

To put it as simply as possible, in any given network range the very first address and the very last address are not usable for hosts. The first address is the network address, and the last address is the broadcast address.

So for 192.168.1.0/24 you'd have:

192.168.1.0 - Network address (NOT usable for hosts)
192.168.1.1 through 192.168.1.254 - Free IPs (Usable for hosts)
192.168.1.255 - Broadcast address (NOT usable for hosts)

And for /25 sub-nets (and all others besides) it'd be the same: the first address in the range and the last address in the range are not usable for hosts.
These 2 Users Gave Thanks to drysdalk For This Post:
 

3 More Discussions You Might Find Interesting

1. IP Networking

Subnetting

We have subnetted our Internal Network. We used an I.P. range of 172.16.16.0-254, 172.16.17.0-254, 172.16.18.0-254, 172.16.19.0-254 and mask 255.255.252.0. We created a subnet range of 172.16.10.0-254 and maske 255.255.255.0. Our routers are configure to route to approprate network. We are able... (2 Replies)
Discussion started by: cassy
2 Replies

2. IP Networking

Subnetting in 11 steps

As seen on Digg.com, here is my ip addressing article in full... Original Subnetting in 11 Steps article Subnetting in 11 Steps There are a few things that you will need to know first. I personally use 11 rules that I learned from Mike Vana. Below you will find the 11 rules as well as... (1 Reply)
Discussion started by: jking2100
1 Replies

3. IP Networking

Subnetting

Guys, Anyone could help me understand subnetting. I know a bit in networking but there are things that I don't get them easily. Thank You in advance. (1 Reply)
Discussion started by: etcpasswd
1 Replies
prtdscp(1M)						  System Administration Commands					       prtdscp(1M)

NAME
prtdscp - display DSCP IP addresses SYNOPSIS
prtdscp [-v ] prtdscp [-v ] -h prtdscp [-v ] -d prtdscp [-v ] -s DESCRIPTION
prtdscp displays the IP addresses associated with a Domain to Service Processor Communications Protocol (DSCP) link. If no arguments are specified, prtdscp displays the IP addresses on both ends of the DSCP link. The IP address of either the Service Processor or domain side can be displayed separately by the use of the -s or -d options, respectively. OPTIONS
The following options are supported: -v Verbose mode. Print additional details about the program's internal progress to stderr. -h Help. Print a brief synopsis of the program's usage and exit. All other command line arguments are ignored. -d Display only the local domain's IP address. -s Display only the remote Service Processor's IP address. EXAMPLES
Example 1 Displaying both addresses The following example displays both the local domain's IP address and the remote SP's IP address: # prtdscp Domain Address: 192.168.103.2 SP Address: 192.168.103.1 Example 2 Displaying the local IP address The following example displays the local domain's IP address: # prtdscp -d 192.168.103.2 Example 3 Displaying the remote IP address The following example display the remote SP's IP address: # prtdscp -s 192.168.103.1 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWdscpr.u, SUNWdscpu.u | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.11 25 Apr 2006 prtdscp(1M)
All times are GMT -4. The time now is 01:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy