Expand Configuration and Management Manual (G06.24+)

Expand Configuration and Management Manual—523347-008
18-1
18 Subsystem Description
This section provides a high-level technical description of the architecture and
dynamics of the Expand subsystem. You should be familiar with the information
presented in this section before you attempt to configure, manage, or troubleshoot the
Expand subsystem.
The following topics are explained in this section:
•
Expand Subsystem Components on page 18-2
•
Expand Subsystem and the OSI Reference Model on page 18-9
•
Path Function of the Expand Subsystem on page 18-13
•
Routing and Time Factors on page 18-22
•
Message Handling and Buffer Allocation on page 18-38
•
Message Buffering on page 18-46
•
Expand-to-NAM Interface on page 18-49
•
Expand-to-IP Interface on page 18-54
•
Expand-to-ATM Interface on page 18-59
•
Multipacket Frame Feature on page 18-64
•
Variable Packet Size Feature on page 18-68
•
Congestion Control Feature on page 18-71
•
Multi-CPU Feature on page 18-74