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BOOTP - Bootstrap Protocol pdf
The Bootstrap Protocol (BOOTP) enables a host to boot from ROM and
request it's own IP address, a gateway address and a boot filename. The
boot file is used to load the disk image into RAM. This article presents
a sequence diagram describing the BOOTP protocol.
DHCP - Dynamic Host Configuration Protocol
pdf
Dynamic Host Configuration Protocol (DHCP) is used to dynamically
provide IP addresses and configuration information to client nodes. DHCP
provides greater flexibility by leasing out IP addresses to host nodes.
DHCP supports mechanisms that can be used by hosts to renew their
lease. This sequence diagram describes the DHCP interactions between a
Laptop and the DHCP servers in the intranet. Four different cases are
covered:
- Laptop boots up for the first time and requests an IP address.
- Laptop's IP address lease is renewed.
- Laptop reboots and confirms IP address setting
- Laptop is disconnected and connected at a different place in the
Intranet.
IP Routing and Subnets
This article describes the basics of IP routing. We will consider the
example of a simple network and trace the life of a packet as it gets
routed from one node to another. The routing tables at each node will be
discussed
IP addresses are 32 bit integers which are represented in the
familiar dot based notation. The dot based notation is nothing but a
decimal representation for each byte of the IP address. For example, an
IP address with a hex value of 0x800A080B is represented as
128.10.8.11...
Reliability and Availability Basics
Realtime and embedded systems are now a central part of our lives.
Reliable functioning of these systems is of paramount concern to the
millions of users that depend on these systems everyday. Unfortunately
most embedded systems still fall short of users expectation of
reliability. In this article we will discuss basic techniques for
measuring and improving reliability of computer systems.
-- EventHelix.com Team |
