Show Module Version (Meaning of Sw1)

[conceptzone]

Dear All,

Can someone please tell me the meaning of Sw1 under both modules shown below
?

6500#sho mod ver

Mod Port Model              Serial #    Versions

--- ---- ------------------ -----------
--------------------------------------

1   24  WS-X6724-SFP       SAD083700XX Hw : 2.1

                                       Fw : 12.2(14r)S5

                                       Sw : 12.2(18)SXD6

                                       Sw1: 8.4(0.61)RCC9

        WS-F6700-CFC       SAD082807PY Hw : 2.0

5    2  WS-SUP720-BASE     SAD0834001U Hw : 3.1

                                       Fw : 7.7(1)

                                       Sw : 12.2(18)SXD6

                                       Sw1: 8.4(0.61)RCC9

Thanks,

Ismail

[Latchum Naidu]

Hi Ismail,

It is a supervisor engine module's boot version.

Please rate if this helped you...

Regards,
Naidu.

[conceptzone]

Dear Naidu,

Do you mean that the 6500 will boot "Sw1: 8.4(0.61)RCC9"  as a basic IOS in case the "Sw : 12.2(18)SXD6" is not available?

It will be great if you can share some links detailing these information

Thanks,

Ismail

[Shashank Singh]

Hi Ismail,

Sw1 indicates the Version of the firmware runtime (on the supervisor engine).This information does not make much sense as long as valid boot images for the supervisor are concerned. The supervisor will definitely not boot with the image shown beside Sw1 in case the main IOS(12.2(18)SXD) is unavailable.

This information is available at http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/catos/7.x/command/reference/sh_u_v.html

Cheers,

Shashank

Please rate if this helped answer your question

[conceptzone]

So what is the main purpose of  Sw1 which is :the Version of the firmware runtime (on the supervisor engine)"? can't we boot the IOS from Sw and that would be enough ?

Thanks

[Shashank Singh · Accepted solution]

Hi,

Every supervisor has a firmware which is installed in its ROM and helps it to boot up in the initial stages of the boot process (when IOS has not been downloaded from the flash into the RAM). Its only in the later stages of the boot process that the supervisor boots up on the IOS image.

Firmware just builds the initial platform for the supervisor bootup and is not capable of booting up the supervisor on its own. Firmware is denoted by Fw in this output.

Sw1 just denotes the runtime version of the firmware image and practically does not mean much. Presence of an IOS image is absolutely necessary for the supervisor to bootup.

Cheers,

Shashank

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[conceptzone]

Thanks indeed for your help!