6506 fan Tray vs Tray2

Unanswered Question
May 10th, 2010

Hi Groups

I have a small problem. I have a 6506, 2 x 2500W, 1 x SUP2

When bootet the "sh env" reports

fan-tray 1:
  fan-tray 1 type: WS-C6K-6SLOT-FAN
  fan-tray 1 version: 1
  fan-tray 1 fan-fail: OK

chassis per slot cooling capacity: 43 cfm
ambient temperature: < 55C
  module 1 cooling requirement: 30 cfm
  module 2 cooling requirement: 30 cfm
  module 3 cooling requirement: 30 cfm

This is normal to the Fan tray 1

Men when i install Fan-TRAY-2

i reports the same unless for the

fan-tray 1 type: WS-C6K-6SLOT-FAN2

But the CFM is still only 43cfm blade.

Anyone ?

I have this problem too.
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Jon Marshall Mon, 05/10/2010 - 15:09

jaynet wrote:

Hi Groups

I have a small problem. I have a 6506, 2 x 2500W, 1 x SUP2

When bootet the "sh env" reports

fan-tray 1:
  fan-tray 1 type: WS-C6K-6SLOT-FAN
  fan-tray 1 version: 1
  fan-tray 1 fan-fail: OK

chassis per slot cooling capacity: 43 cfm
ambient temperature: < 55C
  module 1 cooling requirement: 30 cfm
  module 2 cooling requirement: 30 cfm
  module 3 cooling requirement: 30 cfm

This is normal to the Fan tray 1

Men when i install Fan-TRAY-2

i reports the same unless for the

fan-tray 1 type: WS-C6K-6SLOT-FAN2

But the CFM is still only 43cfm blade.

Anyone ?

Jay

The Sup2 only needs the normal fan tray to operate so i suspect what you are seeing is that when you put the FAN2 in it is simply that the supervisor is drawing the amount of cooling it would from a normal fan tray ie. it doesn't need anymore so it doesn't draw it. Actually it may not be able to draw it as most things on the 6500 are hardware limited.

Jon

Jens Dalbro Tue, 05/11/2010 - 10:39

What i wanted to do was install a X6748-GE-TX in the switch.-

I was under the impression that the card whould just connect to the SUP2 bus.. And not use CEF720

And the only thing i get when i plug in is that "in suff cooling" and the card has been powered off.

/James

Jon Marshall Tue, 05/11/2010 - 11:08

jaynet wrote:

What i wanted to do was install a X6748-GE-TX in the switch.-

I was under the impression that the card whould just connect to the SUP2 bus.. And not use CEF720

And the only thing i get when i plug in is that "in suff cooling" and the card has been powered off.

/James

James

You cannot use a WS-X6748-GE-TX module without a supervisor 720 in your chassis. All 67xx modules have to have a supervisor 720.

Edit - just to explain a bit more. The WS-X65xx modules are fabric enabled. Fabric enabled means they can use either the classic shared bus or if there is a switch fabric they can connect to that. To provide a switch fabric with a sup2 you need an SFM (Switch Fabric Module) in the chassis.

However the WS-X67xx are fabric only linecards ie. they cannot connect to the 32Gbps shared bus. They have to have a connection to the switch fabric and because of the connections they have to the switch fabric they need a sup720.

Jon

Jens Dalbro Tue, 05/11/2010 - 13:54

Okay.. i had a feeling it was going that way.

I now have 2 ways to go.. either 6148-GE-TX or SUP720

I am only going to use this as a L2 switch for starters. I have seen SUP720 for arround 4k$ thats affordeble. Its for my home network.. But nothing is to god for your own net right ?

I think i'll go for a SUP720 an get one when the price is right.

Thanks for your help

/Jemmer

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