I may have missed something here, so shoot me if I an covering old ground. Each 3750x has two power slots, so with the correct wattage power supply it is self sufficient with just one power supply in each, leaving you a spare slot in each switch. Regardless off the number of switches in your stackwise stack, let's say full nine, each of your 3 power stacks (3 stacks each with three switches). on s simplistic view, the least you would go for would be to put an extra power supply in one switch in each power stack. That way you have n+1 and any switch or any power supply can fail. Add more in each stack and add more resillience.

It gets more complicated because if your available power budget is way above what you use, then you don't defo need the extra power supply, and still power the switch with the faulty power supply. Would love to hear bout some real world feed back.

RE: 6513, the 6513E isn't to long away and that solves the Fabric issue! but no news on a hard release date

Sent from my iPhone

On 10 Jul 2010, at 08:47, Matt Hill <[email protected]> wrote:

It might not be very exciting having redundant power, but the
fireworks in the CEO/HR/IT office is when you need to explain why they
have a site down!

Also - whoever was after the 6513 - be careful as only half your slots
are dual fabric.

PS this has been my favourite thread on here for a while ;)

Cheers,
Matt

CCIE #22386
CCSI #31207

On 10 July 2010 15:21, Chadwick L. Allison <[email protected] > wrote:
This is a long thread but some times you have to bite the bullet and spend money on things that just aren't very exciting ie. redundant power! I've been there done that. About the most exciting part was plugging in the
management cable!  WAHOOOO!

--------------------------------------------------
From: "Di Bias, Steve" <[email protected]>
Sent: Friday, July 09, 2010 11:15 PM
To: "Matt Hill" <[email protected]>
Cc: <[email protected]>
Subject: Re: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??

The only way to power all 9 at the same time requires an XPS be installed, otherwise the maximum you can have is four. Either way though you are right and I agree with you 100%! The whole purpose of this technology is for redundancy, if you choose to have two power supplies in the master and no power supplies in the others you will be in a world of hurt when you lose a
power supply, and probably lose most of your stack!

-----Original Message-----
From: Matt Hill [mailto:[email protected]]
Sent: Friday, July 09, 2010 4:05 PM
To: Di Bias, Steve
Cc: Mark Beynon; Tyson Scott; [email protected]
Subject: Re: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??

I am not familiar with the power stacking but you can bet your arse that you should have a "PS required +1" number ob PSUs in the stack. Your 9 switches may be able run off three PSUs but if one blows up you all of a sudden have a down stack. I'd be adding the extra one all the time. Unless
I have this completely wrong ;)

Cheers,
Matt

CCIE #22386
CCSI #31207


On 10 July 2010 08:34, Di Bias, Steve <[email protected]> wrote:

Right so if you had 9 switches in your stack and decided to utilize
StackPower as well you would end up with 3 StackPower stacks within you
StackWise stack.

Phew, that's a lot of stacks in this email!

Steve Di Bias
Network Engineer - Information Systems Valley Health System - Las
Vegas Office - 702- 369-7594 Cell - 702-241-1801
[email protected]


-----Original Message-----
From: Mark Beynon [mailto:[email protected]]
Sent: Friday, July 09, 2010 3:10 PM
To: Di Bias, Steve
Cc: Matt Hill; Tyson Scott; [email protected]
Subject: Re: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??

True, but the stack wise and stack power are independant, so you could
still stack all 9 switches with stack wise whilst powering them as
three stacks.

Or atleast that is what we are told.

Sent from my iPhone

On 8 Jul 2010, at 15:53, "Di Bias, Steve" <[email protected]>
wrote:

One other caveat is that StackPower supports up to four switches
only, whereas the StackWise technology supports up to nine devices
per stack.  So, there could be scenarios where you could have two
StackPower stacks within the same StackWise group of switches,
assuming you have more than 4 in an IDF.

Luckily for me most of the IDF's have between 2 and 3 48 port
switches, but good info incase others are considering the x series

Steve Di Bias
Network Engineer - Information Systems
Valley Health System - Las Vegas
Office - 702- 369-7594
Cell - 702-241-1801
[email protected]


-----Original Message-----
From: Matt Hill [mailto:[email protected]]
Sent: Wednesday, July 07, 2010 4:18 PM
To: Tyson Scott
Cc: Di Bias, Steve; Bill; [email protected]
Subject: Re: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??

I agree with the 3750X as it appears "on paper".

As always with a v1.0 Caveat Emptor...  Of course this wont matter
when in 3 months when the IOS gets its first .1 release :)

If it is power redundancy you are after then your 4500s certainly give
you that.  Then again you say you are using 3 x switches in each
stack. That means you would have a whole 4506 taking up all those RU
(with two empty slots and no no failed supervisor redundancy) when
your 3x3750X will be taking up far less real estate!  With
"supervisor" (stack master) redundancy too...

My cursory pros & cons list leans me towards 3750X.

Cheers,
Matt

CCIE #22386
CCSI #31207


On 8 July 2010 07:09, Tyson Scott <[email protected]> wrote:

Fixed Chassis is always cheaper and the specs on the 3750X switches
is very
good.



Regards,



Tyson Scott - CCIE #13513 R&S, Security, and SP

Managing Partner / Sr. Instructor - IPexpert, Inc.

Mailto: [email protected]

Telephone: +1.810.326.1444, ext. 208

Live Assistance, Please visit: www.ipexpert.com/chat

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From: [email protected]
[mailto:[email protected]] On Behalf Of Di Bias,
Steve
Sent: Wednesday, July 07, 2010 5:04 PM
To: Bill; [email protected]
Subject: Re: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??



From what I can tell it supports IEEE 802.3af PoE+. Depending upon
the
wattage of the power supplies you buy you can actually do up to 30W
of power
per port!



Stev

________________________________

From: Bill [mailto:[email protected]]
Sent: Wednesday, July 07, 2010 1:53 PM
To: Di Bias, Steve; [email protected]
Subject: RE: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??



Do the new 3750-X support Enhanced POE for the new devices? That
was a key
feature that the 4500's supported.



________________________________

From: [email protected]
[mailto:[email protected]] On Behalf Of Di Bias,
Steve
Sent: Wednesday, July 07, 2010 3:46 PM
To: [email protected]
Subject: [OSL | CCIE_RS] OT: Cisco Catalyst 3750-X series??



Hey everyone,



I was considering replacing some of our 3750 stacks with 4506-E's
but our
Cisco rep suggested we take a look at the *new* 3750-X series
instead.  I'm
really interested in the new StackPower capabilities which gives
you power
redundancy within the stack. Also the power supplies are modular
with two
slots on each chassis. The uplink modules are also modular allowing
for 2
10gbE or 4 10GbE uplink ports.



Has anyone seen these things in action yet? Any recommendations as to
staying with the 3750-X series or moving to a single 4506 chassis
for IDF's
that have 3 or more switches in the stack? Thanks in advance!



Thank you,



Steve Di Bias

Network Engineer




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