
Chapter 2 Cabling the CSS
Cabling the CSS 11503 and CSS 11506 Modules
The CSS 11506 not only supports redundancy in SCMs but also supports redundant power supplies and redundant Switch Modules (20 Gbps each).
The CSS modules are as follows:
•144 MB or 288 MB (128 MB or 256 MB of usable memory) Switch Control Module (SCM) with:
–Two
–Two PCMCIA slots for a hard or flash disk drive for the system software, and logging and
–
–1
•Switch Module (SM). An SM provides connectivity among the SCM and IOMs.
–The CSS 11503 has a single integrated SM. A single SM has an aggregate throughput of 20 Gbps.
–The CSS 11506 has two removable SMs that share the switching functions. Two SMs provide 40 Gbps aggregate throughput. As implemented in WebNS 5.10 and greater, if one SM fails, the CSS reboots and continues to operate through the other SM.
•Two slots in the CSS 11503 and five slots in the CSS 11506 are configurable with:
–Fast Ethernet Modules that provide either 8 or 16
–Gigabit Ethernet Modules provides up to two
–A Session Accelerator Module (SAM) that provides a
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