Page 748 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

Border Gateway Protocol (BGP)

Internet Group Management Protocol (IGMP)

Internet Protocol (IP)
Internet Protocol Security (IPSec)

Internetwork Packet Exchange (IPX)

Network Address Translation (NAT)

Simple Key Management for Internet Protocols (SKIP)

The Network layer is responsible for providing routing or delivery
information, but it is not responsible for verifying guaranteed delivery
(that is the responsibility of the Transport layer). The Network layer
also manages error detection and node data traffic (in other words,

traffic control).

Non-IP Protocols

Non-IP protocols are protocols that serve as an alternative to IP at
the OSI Network layer (3). In the past, non-IP protocols were
widely used. However, with the dominance and success of TCP/IP,

non-IP protocols have become the purview of special-purpose
networks. The three most recognized non-IP protocols are IPX,
AppleTalk, and NetBEUI. Internetwork Packet Exchange (IPX) is
part of the IPX/Sequenced Packet Exchange (SPX) protocol suite
commonly used (although not strictly required) on Novell NetWare
networks in the 1990s. AppleTalk is a suite of protocols developed
by Apple for networking of Macintosh systems, originally released

in 1984. Support for AppleTalk was removed from the Apple
operating system as of the release of Mac OS X v10.6 in 2009. Both
IPX and AppleTalk can be used as IP alternatives in a dead-zone
network implementation using IP-to-alternate-protocol gateways
(a dead zone is a network segment using an alternative Network
layer protocol instead of IP). NetBIOS Extended User Interface

(NetBEUI, aka NetBIOS Frame protocol, or NBF) is most widely
known as a Microsoft protocol developed in 1985 to support file
and printer sharing. Microsoft has enabled support of NetBEUI on