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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
Chapter 3 BPX Switch Common Core Components
19.2 Gbps Operation with the BCC-4V
The BCC runs self-tests continuously on internal functions in the background and if a failure is
detected, the fail LED is lighted. If the BCC is configured as a redundant pair, the off-line BCC is
indicated by the lighted stby LED. The stby LED also flashes when a software download or standby
update is in progress. The LAN LED indicates activity on the Ethernet port.
19.2 Gbps Operation with the BCC-4V
To operate the BPX switch at up to a 19.2 Gbps peak throughput, these components are required:
• A 19.2 Gbps backplane
• BCC-4V or later controller cards
• OneormoreBXMcards
• Release 8.4.00 or later switch software
• A backplane NOVRAM that is programmed to identify the backplane as a 19.2 Gbps backplane.
Switch software does not allow node operation at 19.2 Gpbs unless it can read the backplane NOVRAM
to verify that the backplane is a 19.2 Gbps backplane.
The 19.2 backplane can be visually identified by the small white card slot fan fuses at the bottom rear
of the backplane. These fan fuses are approximately 1/4 inch high and 1/8 inch wide. The 9.6 Gbps
backplane does not have these fuses.
If the BPX switch is a late model, then a 19.2 Gbps backplane is installed. You can be verify this by
running the despond command which will display “Word #2 =0001” if the backplane NOVRAM has
been programmed. If anything else is displayed, visually check the backplane for the fuses.
If the backplane is a 19.2 Gbps backplane, but the backplane NOVRAM has not been set to display
Word #2 =0001, then you may use the cnfbpnv command to program the NOVRAM:
Step 1 Enter cnfbpnv. The interface responds:
Are you sure this is a new backplane (y/n).
Step 2 Enter y
Step 3 Confirm that the change has been made by entering dspbpnv to confirm the response:
Word #2 =0001
Note If the change does not take place, it will be necessary to change the backplane
NOVRAM. Contact Cisco Customer Service.
Step 4 Enter switchcc to make switch software recognize the change.
If the backplane is not a 19.2 Gbps backplane, contact Customer Customer Service.
Back Cards for the BCC-4V
The backcards for the Broadband Controller Card serve as an interface between the BPX switch and the
BPX switch network management system.