Finding Services; Moving Packets - Novell NETWARE 6-DOCUMENTATION Manual

Finding Services

Moving Packets

Once a computer is uniquely identified on the network, it can let other
computers know what services it offers, or it can request services from another
computer. There are three service protocols that maintain lists of computers
and the services they offer:
Protocol Name
Service Location Protocol (SLP)
Service Advertising Protocol (SAP)
Domain Name Service (DNS)
SLP (page 17), an Internet protocol, and
both used to locate and advertise network services.
DNS (page 24) is an Internet standard service that provides IP address-to-host
name resolution. Its primary purpose is to match the name of a computer, such
as host1.novell.com, with its IP address. DNS can also map certain Internet
server services, such as E-mail and Web, to specific hosts.
Host files can also be used on private networks to accomplish IP address-to-
host name resolution.
Computers use and provide services by exchanging packets. Packet exchange
can be accomplished only if the computers know how to move information
amongst themselves. Computers learn the path, or route, to other computers
by using routing protocols such as the following:
OSPF (page 25)
NLSP (page 25)
RIP, RIP II (page 25)
There are two kinds of routing protocols, distinguished by their mode of best
route discovery:
Distance Vector
Link State
SAP (page
Understanding Network Communications
Protocol Type
IP
IPX
IP
24), an IPX protocol, are
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