difference between flashes

Unanswered Question
Mar 23rd, 2009

Hi all

i have a Catalyst 6500

and i can't really find the difference between





the first 2 are for the 2 supervisors

but why would i need the last 2? and what are their functions when i have 2 supervisors?

Thank you

I have this problem too.
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Leo Laohoo Mon, 03/23/2009 - 14:59

Sup-Bootflash: is the flash of the HOT supervisor blade.

Slavesup-Bootflash: is the flash of the STANDBY supervisor blade.

Jerry Ye Mon, 03/23/2009 - 17:02

Hi Bart,

In the supervisor card with MSFC, it contains two (2) components, switch processor (SP) and route process (RP). Switch processor provides L2 functions and route process provides L3 functions.

sup-bootflash: is the active switch processor's (SP) flash memory.

slavesup-bootflash: is the standby switch process's (SP) flash memory.

bootflash: is the active MSFC's (RP) flash memory.

slavebootflash: is the standby MSFC's (RP) flash memory.

In native mode, SP (L2) and RP (L3) are on IOS, IOS image doesn't need to be stored in bootflash: or slavebootflash:. The IOS image stored in sup-bootflash: and slavesup-bootflash: can boot up the both supervisor and MSFC.

If you are using hybrid mode, where the SP (L2) is on CatOS and the RP (L3)is on IOS, then the CatOS image will be stored in sup-bootflash: and slavesup-bootflash:, and the IOS image will be stored in bootflash: and slavebootflash:.



adhityakarthik Tue, 03/24/2009 - 06:26


its very good info:

but i am having hybrid version

i am getting this error

DC-6513-1> (enable) dir sup-bootflash:

Open device sup-bootflash failed (unknown devi


BartV1982 Wed, 03/25/2009 - 01:55

Hi Jerry

thank you for this clear explanation

i would say this topic can be closed but i see others still have some questions so i wasn't alone with questions :)


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