ch03 IP Addressing.pdf - The Cisco Learning Network
ch03 IP Addressing.pdf - The Cisco Learning Network
ch03 IP Addressing.pdf - The Cisco Learning Network
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
30 Chapter 3: <strong>IP</strong> <strong>Addressing</strong><br />
Step 5: Figure Out the Directed Broadcast Addresses<br />
After figuring out all of your subnets, you next need to figure out what the directed<br />
broadcast address is for each subnet. This is very simple. <strong>The</strong> directed broadcast of a<br />
subnet is one number less than the next network<br />
number. Also, the broadcast address has all of its<br />
As a shortcut, remember<br />
that the directed broadcast address is one<br />
number less than the network address of<br />
the next network number.<br />
TABLE 3-13<br />
<strong>Network</strong><br />
and Directed<br />
Broadcast<br />
Addresses for<br />
192.168.1.0/28<br />
hosts bits set to binary 1s. Table 3-13 shows our<br />
network numbers and directed broadcast<br />
addresses. For the last table entry, the directed<br />
broadcast address will be the highest possible<br />
value in a byte: 255.<br />
<strong>Network</strong> Addresses Mathematics Directed Broadcast Addresses<br />
192.168.1.0 16 - 1 192.168.1.15<br />
192.168.1.16 32 - 1 192.168.1.31<br />
192.168.1.32 48 - 1 192.168.1.47<br />
192.168.1.48 64 - 1 192.168.1.63<br />
192.168.1.64 80 - 1 192.168.1.79<br />
192.168.1.80 96 - 1 192.168.1.95<br />
192.168.1.96 112 - 1 192.168.1.111<br />
192.168.1.112 128 - 1 192.168.1.127<br />
192.168.1.128 144 - 1 192.168.1.143<br />
192.168.1.144 160 - 1 192.168.1.159<br />
192.168.1.160 176 - 1 192.168.1.175<br />
192.168.1.176 192 - 1 192.168.1.191<br />
192.168.1.192 208 - 1 192.168.1.207<br />
192.168.1.208 224 - 1 192.168.1.223<br />
192.168.1.224 240 - 1 192.168.1.239<br />
192.168.1.240 192.168.1.255
Change language