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1-12 About the PathBuilder S24x, 26x, and 27x switch
Hardware Components
Motherboard
Parts of the
Motherboard
This section describes some of the components that make up the PathBuilder S24x,
26x, and 27x switch motherboard. In addition, this section describes some of the
daughtercards that can be found on the motherboard, shown in Figure 1-7.
Figure 1-7. Motherboard
RAM The PathBuilder S24x, 26x, and 27x switch comes standard with 16 Mbytes of local
DRAM for image execution and 8 Mbytes of global memory for buffer storage.
Ports There are four serial data port DB-25 connectors for network or access functions
(2.048 Mbps):
• Ports 1 and 2 (DB 25) are Data Interface Module (DIM) ports
• Port 3 (DB 25) is a V.36 DTE port
• Port 4 (DB 15) is an Ethernet AUI port
• Port 6 (DB25) is the Control Terminal Port (EIA232)
Power Supply
Ringer Status
DRAM SIMM
Slots 1 and 2
Switch 2
Switch 1
DIMs
Flash SIMM Slot
Optional Flash
SIMM Slot
CMEM SIMM Slot
Data Compression
SIMM Slot
Global DRAM
SIMM Slot
Port 1
LED Connector
Port 2
Port 3
Port 4
Port 6
Etherspan
AUI
Port 2
Port 1
1
2
3
4
5
6
7
8