CPSW and CPSW2 Differences
The main differences between the CPSW (Feature 6501) and the new CPSW2 (Feature Code 6502) are:
Integrated power control
Improved performances
No backward compatibility with any 8260 modules (see list below)
A module in slot 12 will be powered up by the new CPSW2 only if the chassis is a "Release 4"
chassis (P/N 26L0112). The EC to upgrade the 8265 chassis to "Release 4" is a 'use as is'.The P/N of
the old chassis is 13J8689 (see table below) :
The chassis level (in fact the backplane level) can also be read thru the console (useful when remote
access). The command to display the backplane P/N is
show inventory verbose. New backplane P/N
is 02L4093.
CPSW/CPSW2 - Chassis/Backplane Compatibility Table
8265 module designates an ATM module with an 768Mbps backplane attachment.
8260 module designates an ATM module with an 256Mbps backplane attachment.
CPSW2 (FC 6502) and Controller Module (FC 8000) Coexistence
A chassis with CPSW2 does not require a controller module to operate. The CPSW2 handles the power
control (including fans and inventory management). However, the CPSW2 will be operational if a controller
module is plugged in the chassis. In this case, the customer may choose if he wants the CPSW2 or the
controller module to handle the power control. A red switch is located on the CP card, on the bottom left of
the circuit board. When the switch is OFF, the integrated power control is active, when the switch is ON
(Force Controller Module), the controller module is active. You can also use the following table.
This functions allows a customer to take benefit of the controller module redundancy with the CPSW2.
Even if the availability of the CPSW2 is significantly improved versus the CPSW, the availability is still
better with one CPSW2 and two controller modules. So, we may find customers who can afford this
availability function or who already own controller modules (8260 migration, upgrade Feature Code 6501
to Feature Code 6502).
There is no possible power control redundancy between a CPSW2 (FC 6502) and a controller
module.
Module
Old Chassis (PN 13J8689)
Release 4 Chassis (PN 26L0112)
CPSW
(Feature code 6501)
8260 module: Slots 1,3,5,7
8265 module: Slots 1 to 8 and 12
to 17
8260 module: Slots 1,3,5,7
8265 module: Slots 1 to 8 and 12
to 17
CPSW2
(Feature Code 6502)
8260 module: Not operational
8265 module: Slots 1 to 8 and 13
to 17
(with IPC active)
8260 module: Not operational
8265 module: Slots 1 to 8 and 12
to 17
(with IPC not active)
Switch position
ON
OFF
Controller Module present
Controller Module
Integrated Power Control
Controller Module not present
Hub remains power off
Integrated Power Control
Chapter 3. Procedures
3-31
Summary of Contents for 8265 Nways ATM Switch
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