Logical links

A logical link represents the path that connects protocol endpoints to each other. The most common logical link class is IPNetwork, which represents an IP (sub)network. ConnectedVia describes the relationship between a protocol endpoint and a logical link. Two IP addresses can communicate directly when they are ConnectedVia the same IPNetwork. A connection between two IP addresses that are not on the same IPNetwork must go through one or more Routers.

Logical link classes instantiated by the IP Manager identifies the logical link classes that can be instantiated by the IP Manager.

Table 1. Logical link classes instantiated by the IP Manager

Class	Available to	Description
IPNetwork	All IP Manager products	A Layer 3 logical link between IP objects.
IPv6Network	All IP Manager products	A Layer 3 logical link between IPv6 objects.
VLAN	All IP Manager products	A virtual LAN that is typically implemented in switched network environments.
VirtualCircuit	All IP Manager products	A virtual connection between network endpoints, typically traversing a WAN.
FrameRelayPVC	All IP Manager products	A circuit that is implemented over a Frame Relay network.