td_miles at yahoo
Apr 4, 2012, 5:46 PM
Post #8 of 8
We've only ever had ONE bus stall when replacing a SUP (this was replacing a failed one, not upgrading from single to dual). As a result we always schedule this sort of activity in a maintenace window and plan for the worst (ie. box reboot & 5-10 mins of downtime).
Re: Adding a SUP720-3BXL standby SUP question
[In reply to]
----- Original Message -----
> From: Andrew K. <andrew [at] vianet>
> To: cisco-nsp [at] puck
> Sent: Thursday, 5 April 2012 10:02 AM
> Subject: Re: [c-nsp] Adding a SUP720-3BXL standby SUP question
> I've attempted this before and failed, this was with a 7606 running SRE5.
> The bootvar is the spare sup720 I was adding was set to boot from the
> bootflash, and not the CF disk.
> When I inserted the card it loaded the bootflash IOS (which was from a
> totally different train).
> After this the box promptly crashed, I imagine its because the slave-sup
> was attempting to SSO.
> Since then I keep a console on the new slave as I insert it and if I see
> it loading the incorrect ISO I break into ROMMON.
> Just my experience, wanted to share.
> On 4/4/2012 5:58 PM, Brian Wallingford wrote:
>> I wouldn't go that far unless you've got a use for an additional
>> Simply put the compact flash from the new 3bxl into the primary's 2nd
>> slot, copy the image& return it to the new card if you're nervous.
>> Either way, insterting a new sup should not interfere with the primary.
>> On Wed, 4 Apr 2012, Lee Starnes wrote:
>>> I had figured as much, but wanted to make sure. I have backups of
>>> everything, so if something does go wrong, it can get corrected. We may
>>> just pick up a spare chassis to do this upgrade. Seems that they are
>>> too costly.
>>> Thanks for the input.
>>> 2012/4/4 Piotr Wojciechowski<peper [at] peper>
>>>> On 4/4/12 22:14 , Lee Starnes wrote:
>>>>> I have a question about the 6509 and the SUP720-3BXL standby
> sup. If a
>>>>> chassis only has 1 SUP installed and you install a second one,
> will that
>>>>> disrupt the currently installed and working SUP? I ask this
> because we
>>>>> our standby SUPs and I would like to install them, but I know
> they don't
>>>>> have the same version of IOS running. I don't want to blow
> away the
>>>>> or cause the chassis to go down when installing these. Does
> anyone have
>>>>> experience with this?
>>>> Normally when you insert second sup as a standby (same type,
>>>> configuration including PFC and memory) it should synchronize
> itself to
>>>> active one including IOS and configuration (except configuration
>>>> registers) and reload as standby. But I normally recommend my
>>>> to manually load proper IOS to supervisor on spare chassis and
>>>> prepared one into production chassis.
>>>> Piotr Wojciechowski (CCIE #25543)
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