RE: VSS and PFC3A

Per the Breakout Session at Cisco Live (BRKRST-3035)

"Diversify VSL bundle on separate line card and port, just like any resilient EtherChannel design. The VSL link port location also affect the QOS configuration on the other supervisors ports.

Design 1 uses both 10G ports on supervisor which does not provide hardware diversity as both ports are connected to single internal fabric connection.

Design 2 offers a practical solution where the cost is more influential then flexibility. Design 2 uses one port from Sup720-10G uplink and other from WS-X6708 line card. This design limits unused ports on Sup720-10G with default CoS based queuing. 12.2(33)SXI removes this restriction

Design 3 is recommended if full flexibility of QOS configuration is required. This option avoids using Sup 720-10G uplink ports and uses two separate WS-X6708 line cards for VSL links but not as cost effective as option 2 or 1"

David Lucas
CCIE No. 21272

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-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Martin Kiefer
Sent: Wednesday, August 05, 2009 11:18 AM
To: 'GS CCIE-Lab'
Subject: RE: VSS and PFC3A

SXH does not support any service modules in a VSS setup, there you will need
SXI and if you will be using the new 10G sfp modules you will need to run at
least SXI2 software.

Btw I have seen some using the 6708 and 6716 10G modules for the VSS link.
Can anyone explain why you would do that?

I always just use both of the 10G links in the supervisor, some would say
that this is for redundancy, but where is the redundancy in this?

Best regards
Martin Kiefer

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Reza
Toghraee
Sent: 4. august 2009 19:12
To: 'KRATTIGER Lukas'; 'Andy Reid'; 'Ram Shummoogum'
Cc: ccielab_at_groupstudy.com
Subject: RE: VSS and PFC3A

Correct,

I have a VSS pair, with WS-X6748 with CFC.
The only problem which I faced was the IOS, which must be SXI, not SXH. SXH
does not support FWSM modules in VSS.

Regards
Reza
CCIE R&S

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
KRATTIGER Lukas
Sent: Tuesday, August 04, 2009 7:56 PM
To: Andy Reid; Ram Shummoogum
Cc: ccielab_at_groupstudy.com
Subject: AW: VSS and PFC3A

Hi Andy
This is not correct.
Only the cards with VSL on it need to have DFC3C and the Sup has to be
PFC3c.
All the rest has to be a 67xx-Linecard but no matter if CFC or DFC3c.
Important is, if DFC, it has to be 3c.
Cheers
-Lukas

________________________________

Von: nobody_at_groupstudy.com im Auftrag von Andy Reid
Gesendet: Di 04.08.2009 16:47
An: Ram Shummoogum
Cc: ccielab_at_groupstudy.com
Betreff: Re: VSS and PFC3A

Hi Ram,

Yes, you have to have PFC3C to run in VSS mode. In addition, all modules
equipped with DFC's must also be DFC3C.

http://www.cisco.com/en/US/partner/prod/collateral/switches/ps5718/ps9336/pr
od_qas0900aecd806ed74b.html

regards Andy

Ram Shummoogum wrote:
> Hi:
>
> Do you think I can convert my 6500 series to VSS with a PFC3A on my sup.
> Or do I absolutely need the PFC3C or PFC3CXL.
>
>
> Thanks
> Ram
>
>
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Received on Wed Aug 05 2009 - 21:53:14 ART