The service interface is a single adapter used for the service tools server.
More commonly it is a network adapter that supports either a local console on a network or the service tools server. In the case where there is a valid network adapter available, even if another console is selected and there is a valid service host name associated with the adapter, then this is the service interface. It can support a console, the service tools server, or both.
Occasionally the adapter is not used for the LAN console but only used to support the System i® Navigator interface for hard disk drive configuration or similar functions. With IBM® i 6.1, the service interface can be shared with an IBM i line description, therefore sharing the same interface. LAN console and *SRVLAN adapter can share the same physical interface.