Cat3750 stack, sw-upgrade without rebooting the whole stack at the same tim
hi,
i've gout a question regarding catalyst 3750 stack software upgrades.
is there any possibility to do a software upgrade to the stack without rebooting all stack
members at the same time?
i tried to do this manually with "archive download-sw /overwrite"
(without using /force-reload or /reload parameters) and then reboot one of the two members
in the stack. the remaining switch correctly becomes the Master. But when the member with the
new software comes up again, a version missmatch is detected (by the switch running the old sowftware) and the upcomming switch stucks in the boot process.
so everything i tried, i've got a network down for the whole stack.
we have a scenario where servers are connected to both members of a stack (for REDUNDANCY and
bandwidth aggregation). it would be nice if' there's any procedure to do an upgrade in the stack without
losing both connections to our servers at the same time...
kind regards
hi clare,
thanks for your reply. i tried your described procedure, but with no success.
rebooting both switches, regardless which software the have in their flash, will interrupt the connected servers, because both links (to the stack) are going down at the same time (to achieve this, its easier to use the standard procedure as described in the config guide).
the idea with a seperated sw-download with different feature-set's sounded interesting for me in the first moment.
unfortunately it doesn't work too. after the sepedated download to the switches as soon as i reboot one the switches to load the new software, the other becomes (or stays) master of the stack. once the rebooted switch with the new software comes up again, the mastes displays a version mismatch (and the upcoming switch stucks in operation, awaiting the pretended correct software).
at this stage i can only reboot the master switch which results in complete outage of the stack (the upcoming stucking switch reboots too).
i have posted the question in the "ask the expert, high availability.." threat too, so maybe the expert has an idea to accompish this task ;-)
kind regards
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Thanks!Originally Posted by smflood
lpphiggp wrote:
> I was reading through the inst-oes-lnx.pdf doc (for OES2sp3) to upgrade
> our OES2sp2 server, and section 5.2.2 clearly states, "You must upgrade
> SLES 10 and OES 2 -at the same time-". This line is confusing me
> badly.
>
> The problem is, following along the online(rug) upgrade section
> (Section 5.4.5), I see it says only to download the -move-to-oes2-sp3-
> patch, after which there are more rug commands, some configuring, and at
> least one reboot. It doesn't explicitly say anything about a
> -move-to-sles10-sp4- patch (except that it cannot be used to upgrrade
> OES2 SP3) until Section 7.4.1, Updating the Server Base form SLES 10SP3
> to SLES10 SP4.
>
> So... they're done sequentially, OES, then SLES? Or am I off here? That
> would mean for a time, the server is running as OES2sp3/SLES10sp3. That
> doesn't seem to meet the "same time" requirement.
>
> But if they are to be done simultaneously, which is what "same time"
> means to me, then I'm at a loss.
> Does the move-to-oes2-sp3 patch automatically add the
> -move-to-sles10-sp4- patch? That seems to be hinted at by line 5 of
> Section 5.4.5 Performing the Upgrade: " Install the recommended patches
> that are in the channels using rug up -t patch -g recommended && rug
> ping -a." (But why then have Section 7.4.1?)
>
> I don't have the luxury of development or test servers to play around
> on, being tight budgeted, our servers are in production- I have to get
> this right.
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