Beta Draft Confidential
Overview
Hardware Component Descriptions
CBX 500 Multiservice WAN Switch Hardware Installation Guide
4/5/03
1-7
SP Modules
The switch processor (SP) provides background management and static networking
functions for the IOP modules. CBX 500 SPs are available in four models:
•
Model 10 supports throughputs up to 2.5 Gbps
•
Models 20, 30, and 40 support throughputs up to 5 Gbps
SP Features
•
Intel’s i960 RISC processors for control and status
•
State-of-the-art hardware switching for the high-performance packet switching
needed for ATM, high-bandwidth transmission environments, and high port-
density configurations
•
Passive connector panels to allow an SP to be removed without powering down
the switch or “hot swapping”
•
Expanded RAM (up to 128 Mbytes) to support IP switching (Model 40)
•
Models 30 and 40 have the Stratum 3 holdover capability, which enables the
switch to continue to provide system timing even after a selected timing source
fails
SP Redundancy
Installations with high-reliability networking requirements may require a second SP to
make the switch redundant. In the event of an SP failure, the redundant partner
automatically becomes the active processor. This avoids serious service disruption on
the network. See
Appendix D
for more information about redundancy on a CBX 500
switch.
Table 1-1
shows the SP configurations supported on the CBX 500.
Note – You cannot configure a switch with one Model 10 SP and one Model 20 SP, or
one Model 30 and one Model 40. In a redundant SP configuration, both SPs must be
of the same model type.
