[j-nsp] Urgent downgrade pic

[chandrasekaran iyer]

On Sat, Nov 14, 2009 at 5:56 PM, chandrasekaran iyer
<shekar1975 at gmail.com> wrote:
> Hi Nilesh,
>
>  What i was observing FPC is detected but the corresponding interface
> is not seen in "run show interface terse output" like
>  xe-6/0/0,xe-6/0/1 not seen or ge-4/0/0,ge-4/0/1 not seen but some
> other interface i think some logical ones are seen.
>  Many time i observe this.
>
>  Do i need to do some other checks.
>
> Regds,
>
> Shekar.B
>
>
> On Sat, Nov 14, 2009 at 12:48 AM, Nilesh Khambal <nkhambal at juniper.net> wrote:
>> Hi Shekar,
>>
>> Is there any specific reason, you downgrading from 9.4 to 7.2? Which type of
>> interfaces are not coming up? Most likely they are not supported in 7.2. You
>> need to check Supported PIC page in the external documentation to find the
>> release the particular PIC is supported from
>>
>> For example this is for M10i.
>>
>> http://www.juniper.net/techpubs/en_US/release-independent/junos/topics/refer
>> ence/general/pic-m10i-supported.html
>>
>> If the PIC is not supported in your 7.2 release, there is pretty much
>> nothing you can do to make it work in that release. No firmware
>> upgrade/downgrade can help here.
>>
>> If your PIC is found supported from the documentation, you should check if
>> at least FPCs are detected and the PICs being marked as "unsupported
>> hardware" in "show chassis hardware" output. If not then, probably your
>> chassisd daemon responsible for detecting and bringing up the FPC/PIC might
>> be having issue. Look under /var/tmp or /var/crash to see if any coredumps
>> are generated. Again, since 7.2 is an EoLed release, this issue can not be
>> fixed in 7.2 anymore. But most likely, it might be already fixed in the
>> later releases. This is all assuming your PIC hardware is supported in 7.2.
>>
>> Also, during the upgrade or downgrade, you are not supposed to jump more
>> than 3 major JUNOS releases at a time. For.e.g from 9.3 you need to upgrade
>> to 9.6 before going to 10.0. Similarly, for downgrade It is usually
>> mentioned in the release notes of every release in the upgrade instructions.
>>
>> Thanks,
>> Nilesh
>>
>> On 11/13/09 5:16 AM, "chandrasekaran iyer" <shekar1975 at gmail.com> wrote:
>>
>>> Also i wanted to know what are the steps that happen when image is
>>> loaded, how the image is loaded in fpc, when does it happen.
>>> Any document for this.
>>>
>>> Also while downgrading, why do we need to go from say 9.4 to 9.0 than
>>> to 8.5 then 8.0. Any specific reason.
>>>
>>> Thanks,
>>>
>>> Shekar
>>>
>>> On Fri, Nov 13, 2009 at 6:25 PM, chandrasekaran iyer
>>> <shekar1975 at gmail.com> wrote:
>>>> On Fri, Nov 13, 2009 at 6:25 PM, chandrasekaran iyer
>>>> <shekar1975 at gmail.com> wrote:
>>>>> Hi,
>>>>>
>>>>>   When i download from 9.4 to 7.2 , i dont' see the interfaces coming
>>>>> up after issuing "run show interface terse".
>>>>>  Also it seems we cannot downgrade directly from 9.4 to 7.2, we have
>>>>> to step by step downgrade like 9.4 to 9.0 than 9.0 to 8.5.
>>>>>
>>>>>   Could you please clarify this point. how to downgrade? why not able
>>>>> to see the interfaces? The router model is M20.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Shekar.B
>>>>>
>>>>> On Thu, Nov 12, 2009 at 9:16 AM, Truman Boyes <truman at suspicious.org> wrote:
>>>>>>
>>>>>> On 11/11/2009, at 9:17 PM, Daniel Verlouw wrote:
>>>>>>
>>>>>>> On Wed, 2009-11-11 at 15:19 +0530, chandrasekaran iyer wrote:
>>>>>>>>
>>>>>>>>  Has anyone downgraded the PIC? how to do it? Which PICs are
>>>>>>>> supported by 6.1 release.
>>>>>>>
>>>>>>> downgrade the PIC? What exactly do you want to achieve? And I'm more
>>>>>>> curious about why you would want to run JUNOS version that's EOLd over 5
>>>>>>> years ago?
>>>>>>>
>>>>>>>  --Daniel.
>>>>>>
>>>>>> I would also recommend against running a release as old as 6.1. There have
>>>>>> been numerous security updates since 6.1, and these are likely important to
>>>>>> your network. BTW, you don't downgrade PICs, you could change the release
>>>>>> to
>>>>>> an older version, in which case all the software for the system will be
>>>>>> downgraded.
>>>>>>
>>>>>> Truman
>>>>>>
>>>>>> _______________________________________________
>>>>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>>>>>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Thanks with regards
>>>>>
>>>>> Shekar.B
>>>>> --
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Thanks with regards
>>>>
>>>> Shekar.B
>>>> --
>>>>
>>>
>>>
>>
>>
>
>
>
> --
> Thanks with regards
>
> Shekar.B
> --
>



-- 
Thanks with regards

Shekar.B
--