Subnets with no VLSM applied
Subnets with VLSM applied
VSLM, Example 1
VLSM, Example 2
Summary Example
Tuesday, July 28, 2009
Variable Length Subnet Masks (VLSM)
Subnets with no VLSM applied
Subnets with VLSM applied
VSLM, Example 1
VLSM, Example 2
Summary Example
Tuesday, July 14, 2009
Subnetting Basics
Benefits of subnetting include:
How To Create Subnets
Take bits from the host portion of the IP address and reserve the to divine the subnet address.
Understanding the Powers of 2
Subnet Masks
Default Subnet Masks
Classless Inter-Domain Routing (CIDR)
Used to allocate an amount of IP address space to a given entity (company, home, customer, etc).
Example: 192.168.10.32/28
The slash notation (/) means how many bits are turned on (1s) and tells you what your subnet mask is.
CIDR Values
- Reduced network traffic
- Optimized network performance
- Simplified management
- Facilitated spanning of large geographical distances.
How To Create Subnets
Take bits from the host portion of the IP address and reserve the to divine the subnet address.
Understanding the Powers of 2
Subnet Masks
- Used to define which part of the host address will be used as the subnet address.
- A 32-bit value that allows the recipient of IP packets to distinguish the network ID portion of the IP address from the host ID portion.
Default Subnet Masks
Classless Inter-Domain Routing (CIDR)
Used to allocate an amount of IP address space to a given entity (company, home, customer, etc).
Example: 192.168.10.32/28
The slash notation (/) means how many bits are turned on (1s) and tells you what your subnet mask is.
CIDR Values
Monday, July 6, 2009
IP Addressing
An IP address is a numeric identifier assigned to each machine on an IP network.
It designates the specific location of a device on the network.
IP addressing was designed to allow hosts on one network to communicate with a host on a different network regardless of the type of LANs the hosts are participating in.
IP Terminology
BIT: A bit is one digit, either a 1 or a 0.
BYTE: A byte is 7 or 8 bits, depending on whether parity is used. For the rest of this chapter, always assume a byte is 8 bits.
OCTET: An octet, made up of 8 bits, is just an ordinary 8-bit binary number. In this chapter, the terms byte and octet are completely interchangeable.
Network address: This is the designation used in routing to send packets to a remote network—for example, 10.0.0.0, 172.16.0.0, and 192.168.10.0.
Broadcast address: The address used by applications and hosts to send information to all nodes on a network is called the broadcast address.
Network Addressing
Subdividing an IP address into a network and node address is determined by the class designation of one’s network. This figure summarizes the three classes of networks.
Reserved Addressing
Private Addressing
It designates the specific location of a device on the network.
IP addressing was designed to allow hosts on one network to communicate with a host on a different network regardless of the type of LANs the hosts are participating in.
IP Terminology
BIT: A bit is one digit, either a 1 or a 0.
BYTE: A byte is 7 or 8 bits, depending on whether parity is used. For the rest of this chapter, always assume a byte is 8 bits.
OCTET: An octet, made up of 8 bits, is just an ordinary 8-bit binary number. In this chapter, the terms byte and octet are completely interchangeable.
Network address: This is the designation used in routing to send packets to a remote network—for example, 10.0.0.0, 172.16.0.0, and 192.168.10.0.
Broadcast address: The address used by applications and hosts to send information to all nodes on a network is called the broadcast address.
Network Addressing
Subdividing an IP address into a network and node address is determined by the class designation of one’s network. This figure summarizes the three classes of networks.
Reserved Addressing
Private Addressing
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