[c-nsp] Cat6500 "Waiting for supervisor to come online in other slot" when booting

[Peter Hicks]

All,

I have a pair of 6504Es with Sup32s here, running 12.2(33)SXH6.  When
they boot, the bootloader loads and I am presented with:

==cut===

System Bootstrap, Version 12.2(18r)SX9, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2008 by cisco Systems, Inc.
Cat6k-Sup32 platform with 524288 Kbytes of main memory

Autoboot executing command: "boot "

Initializing ATA monitor library...
string is bootdisk:s3223-boot-mz.122-33.SXH6.bin

Initializing ATA monitor library...

Self extracting the image... [OK]
Self decompressing the image :
################################################################################################################################################
[OK]

...

Cisco IOS Software, s3223_sp Software (s3223_sp-BOOT-M), Version
12.2(33)SXH6, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Thu 15-Oct-09 11:59 by prod_rel_team
Image text-base: 0x40231348, data-base: 0x41B62000

MAC based EOBC installed

Waiting (slot 1) for supervisor to come online in other slot.  iteration
= 0
         Next Retry will be done after 6 seconds

==cut===

I only have a single Sup32 in the chassis, and this message continues
forever.  Breaking out and booting the image manually appears to work.

What causes this, and how can I get around it?  I am sure I'm not doing
something correctly.

Regards,


Peter