ch03 IP Addressing.pdf - The Cisco Learning Network

More documents

Recommendations

Info

24 Chapter 3: IP Addressing TABLE 3-10 Class B Subnets Subnet Mask Networking Bits Number of Networks Number of Hosts 255.255.255.252 /30 32,768 2 255.255.255.248 /29 8,192 6 255.255.255.240 /28 4,096 14 255.255.255.224 /27 2,048 30 255.255.255.192 /26 1,024 62 255.255.255.128 /25 512 126 255.255.255.0 /24 256 254 255.255.254.0 /23 128 510 255.255.252.0 /22 64 1,022 255.255.248.0 /21 32 2,046 255.255.240.0 /20 16 4,094 255.255.224.0 /19 8 8,190 255.255.192.0 /18 4 16,382 255.255.128.0 /17 2 32,764 255.255.0.0 /16 1 65,534 TABLE 3-11 Class C Subnets Subnet Mask Networking Bits Number of Networks Number of Hosts 255.255.255.252 /30 64 2 255.255.255.248 /29 32 6 255.255.255.240 /28 16 14 255.255.255.224 /27 8 30 255.255.255.192 /26 4 62 255.255.255.128 /25 2 126 255.255.255.0 /24 1 254
When subnetting, depending on the device, the first and last subnet in a network, referred to as subnet 0, might or might not be valid. For the exam, remember this, since the exam doesn’t tell you one way CERTIFICATION OBJECTIVE 3.04 Planning IP Addressing When it comes to addressing, dealing with protocols like AppleTalk, IPX, and XNS is easy: each has a distinct network and host component. With these protocols, there is no such thing as a subnet mask, which can change the boundary between network and host numbers. When I started out with TCP/IP, one of the most difficult tasks I’ve faced in my networking career was tackling and understanding how to handle subnetting and IP addressing. To make matters worse, IP addressing has its roots in binary mathematics, since this is how computing devices deal with numbers. And considering that I have a degree in Mathematics, and that I had trouble with IP addressing, imagine how strange IP addressing must be to the layman? Through my years of experience dealing with TCP/IP and teaching Cisco-related courses, I’ve developed a six-step approach to help students plan for their IP addressing needs in their networks. Here are the six steps: 1. Figure out network and host requirements 2. Satisfy host and network requirements 3. Figure out the subnet mask 4. Figure out the network addresses 5. Figure out the directed broadcasts for your networks 6. Figure out the host values for your networks The following sections will cover the six steps in depth. Planning IP Addressing 25 or the other. However, when looking for an answer, you’ll never see both as a valid answer, either the answer will include the first and last subnet or it won’t.
Page 1 and 2: CERTIFICATION OBJECTIVES 3.01 TCP/I
Page 3 and 4: TABLE 3-1 Comparison of the OSI Ref
Page 5 and 6: application, your operating system
Page 7 and 8: A nice feature of this process is t
Page 9 and 10: TABLE 3-4 IP Datagram Components IP
Page 11 and 12: TCP/IP Protocol Stack 11 frame, wit
Page 13 and 14: DHCP allows devices to dynamically
Page 15 and 16: TABLE 3-6 Binary to Decimal to Hexa
Page 17 and 18: ■ Class A addresses range from 1-
Page 19 and 20: TABLE 3-7 Powers of 2 IP Addressing
Page 21 and 22: Subnet Masks For example, you might
Page 23: TABLE 3-8 Valid Subnet Mask Values
Page 27 and 28: Remember that the exam might not al
Page 29 and 30: TABLE 3-12 Network numbers for 192.
Page 31 and 32: Step 6: Figure Out the Host Address
Page 33 and 34: CERTIFICATION OBJECTIVE 3.05 Figuri
Page 35 and 36: Remember the shortcut of figuring o
Page 37 and 38: Figuring Out IP Address Components
Page 39 and 40: has a directed broadcast address of
Page 41 and 42: Two-Minute Drill 41 Subnetting ❑
Page 43 and 44: 6. 191.75.39.24 is a Class ________
Page 45 and 46: SELF TEST ANSWERS TCP/IP Protocol S

ch03 IP Addressing.pdf - The Cisco Learning Network

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?