Networking Concepts
Network Interface and Link Types
•An FDDI interface can have only one link configured under it; however, a single link can reach a large number of nodes. FDDI/iX Network Link can support up to 1000 nodes. Up to four FDDI NIs can be active at a time per system.
•A
•An X.25 network interface can have from one to 11 links configured, depending on the number of configured X.25 network interfaces on the node. (A single node can have up to 11 NIs and up to 11 X.25 links.) Each link can be connected to as many as 1,024 remote nodes, with communication allowed with as many as 256 nodes at the same time. Up to 11 X.25 NI’s can be active at a time (one NI must be loopback) for a total of 12 NI’s per system..
•A gateway half network interface can have only one link configured under it (the gateway half link). Links connecting two gateway halves can be only NS
If more than one
Refer to “Software Configuration Maximums” at the end of this chapter for information on configuration path maximums.
Priority of Network Interfaces
If it is possible to reach a destination through more than one active NI, the network determines which NI to select according to the following priority:
Loopback
LAN Token Ring X.25 Gateway Half
If more than one NI of a given type is active, (for example, two X.25 NIs) the network will select the one that it finds first.
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