Re: AW: AW: VSS and PFC3A

Hi Ram,

I forgot one other important point - only 67xx modules and some services
modules are supported in VSS mode. If you have other line cards then you
need to either trade them in (if you have a nice Cisco SE) or bin them
.. and yes there isn't a 67xx module with PoE capability (though VSS is
not the right solution if you are changing a pair of access switches
into VSS).

I will dig out the module compatibility matrix for you.

regards Andy

Andy Reid wrote:
> Hi Ram,
>
> Remember if you have 10GE cards installed it is not possible to remove
> their DFC's as they come installed as standard, which leaves the
> upgrade supervisor option. Note that you cannot have two supervisors
> in the same chassis when switching to VSS mode (at least not at the
> current SXI release). Only one supervisor in each chassis is
> supported, and each must be a VS-S720-10GE-3C or VS-S720-10GE-3CXL. It
> is not possible to use an older supervisor in each chassis and use
> 10GE cards (such as the 4, 8 or 16 port versions).
> Don't forget that you also need a synchronization link between the two
> chassis once cut-over - this is usually a 1GE copper link if they are
> the same room - it does not carry client traffic but information such
> as keep-alives and state information.
>
> regards Andy
>
> KRATTIGER Lukas wrote:
>> Hi Ram
>>
>>
>>
>> You are correct. The DFC, CFC are on the linecards. There are also
>> limitations according to the daughter cards.
>>
>> The only VSS compatible Supervisor is the VS-S720-10GE-3C/XL. It's a
>> Sup720 with 2x 10G and PFC3c on it. All other Sups are not able to do
>> VSS.
>>
>>
>>
>> I hope this helps.
>>
>>
>>
>> Cheers
>>
>> -Lukas
>>
>>
>>
>> Von: Ram Shummoogum [mailto:rshummoo_at_ca.ibm.com]
>> Gesendet: Dienstag, 4. August 2009 16:44
>> An: KRATTIGER Lukas
>> Cc: ccielab_at_groupstudy.com
>> Betreff: Re: AW: VSS and PFC3A
>>
>>
>>
>>
>>
>> Thanks for getting back so fast.
>>
>> When you say remove the PFC3A and replace with CFC or DFC3c/DFC3cXL: Are
>> you referring to the SUP720. I thought CFC and DFC are only for
>> linecards.
>>
>> For the line cards I am good as they are new and are DFC3C.
>>
>> Thanks
>>
>>
>>
>>
>>
>>
>> "KRATTIGER Lukas" <Lukas.KRATTIGER_at_nextiraone.ch>
>>
>> 08/04/2009 10:38 AM
>>
>> To
>>
>> Ram Shummoogum/Quebec/IBM_at_IBMCA, <ccielab_at_groupstudy.com>
>>
>> cc
>>
>>
>> Subject
>>
>> AW: VSS and PFC3A
>>
>>
>>
>>
>>
>>
>>
>>
>> Hi Ram
>>
>> Just remove your PFC3A and replace it with a CFC or buy a DFC3c/DFC3cXL.
>> These are your two options.
>> A VSS will never work with distributed forwarding below 3c.
>> Just as a side note: The linecards for your VSLs need to have a
>> DFC3c/DFC3cXL on it.
>>
>> Cheers
>> -Lukas
>>
>>
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Received on Tue Aug 04 2009 - 23:25:53 ART