Table . Properties of the class InternetLayerType Name Type Multiplicity Description The property is associated with the class Has_Choice It indicates that there is a choice InternetLayerChoiceType. among and properties. IPv4, ICMPv4, IPv6 ICMPv6 Has_Choice InternetLayerChoiceType 1 Only one of the properties of class can InternetLayerChoiceType be populated at any time. See Section 1.2.3 for more detail. The class is the type of the property. In the UML model, this class is associated with the InternetLayerChoiceType Has_Choice UML stereotype, which specifies that only one of the available properties of the class can be <<choice>> InternetLayerChoiceType populated at any time. The property table of the class is given in Table 330. InternetLayerChoiceType . Properties of the class InternetLayerChoiceType Name Type Multiplicity Description The property specifies the Internet Protocol version 4 (IPv4) packet. IPv4 IPv4 is a connectionless protocol for use on packet-switched link networks (e.g., Ethernet). IPv4 0..1 IPv4PacketType Only one of the properties of can be InternetLayerChoiceType populated. The property specifies an ICMP packet (v4) which is chiefly used ICMPv4 in the operating systems of networked computers to send error messages indicating, for example, that a requested service is not available or that a ICMPv4 ICMPv4PacketType 0..1 host or router could not be reached. See and for more information.
Table . Properties of the InternetLayerType class Name Type Multiplicity Description Has_Choice InternetLayerChoiceType 1 The Has_Choice property is associated with the class InternetLayerChoiceType. It indicates that there is a choice among IPv4, ICMPv4, IPv6 and ICMPv6 properties. Only one of the properties of InternetLayerChoiceType class can be populated at any time. See Section 1.2.3 for more detail. The InternetLayerChoiceType class is the type of the Has_Choice property. In the UML model, this class is associated with the <<choice>> UML stereotype, which specifies that only one of the available properties of the InternetLayerChoiceType class can be populated at any time. The property table of the InternetLayerChoiceType class is given in Table 330. . Properties of the InternetLayerChoiceType class Name Type Multiplicity Description IPv4 IPv4PacketType 0..1 The IPv4 property specifies the Internet Protocol version 4 (IPv4) packet. IPv4 is a connectionless protocol for use on packet-switched link networks (e.g., Ethernet). Only one of the properties of InternetLayerChoiceType can be populated. ICMPv4 ICMPv4PacketType 0..1 The ICMPv4 property specifies an ICMP packet (v4) which is chiefly used in the operating systems of networked computers to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached. See and for more information.
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