TCP/IP Configuration and Management Manual

Overview of NonStop TCP/IP
TCP/IP Configuration and Management Manual—427132-004
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Management Interfaces and Network Components
Shown in Figure 2-2
Management Interfaces and Network Components Shown in
Figure 2-2
Filters
Filters provide a logical mechanism whereby frames received from the LAN can be
sorted, then delivered, to a particular client such as NonStop TCP/IP. Filters replace
the PORT objects used in systems prior to the ServerNet architecture in the sense that
filters are the final destination for data received from the LAN. The NonStop TCP/IP
process in NonStop S-series systems registers ARP filters and IP filters through a LIF.
LANMAN
The LANMAN process is part of the SLSA subsystem. The LANMAN process performs
the following tasks:

Starts and manages the SLSA subsystem objects and the LAN monitor (LANMON)
process

Assigns ownership of Ethernet adapters to the LANMON processes in the system
Subsystem Control Facility (SCF) commands are directed to the LANMON processes
for configuring and managing the SLSA subsystem and the Ethernet adapters.
LANMON
The LANMON process is part of the SLSA subsystem. The LANMON process has
ownership of the Ethernet adapters controlled by the SLSA subsystem.
SLSA Adapters
For more information about SLSA adapters, see the manuals listed under SLSA
Adapters Manuals on page xiv.
Overview of TCP/IP over ATM
NonStop TCP/IP includes support for TCP/IP over ATM networks. ATM stands for
Asynchronous Transfer Mode, a networking technology that relays fixed-sized cells as
opposed to frames or packets. These fixed-sized cells reduce processing time in the
switching hardware giving ATM high bandwidth networking services. ATM can transmit
data, voice, and video information on both local and wide area networks.
HP provides ATM technology through the ATM subsystem, which is described in detail
in the ATM Configuration and Management Manual.
The rest of this subsection provides high-level information about TCP/IP for ATM.