[c-nsp] Problems with 6509 upgrade kit
Chris Roberts
croberts at bongle.co.uk
Tue Jan 11 15:35:18 EST 2005
Hey,
Apologies for replying to self, but I thought I'd update on this in case
anyone else gets bitten. I managed to find a Cisco bugID stating something
about the fan tray polarity.
Basically, in the 6509-NEB-UPGRD kit the fan trays are wired incorrectly by
default, with the polarity on the external DC connections to the PSU
reversed.
This is what I got from Cisco:
By default, red cable is inserted into positive (+) terminal of Fan Tray,
black
one into negative (-) terminal. Fan Tray cannot gain power from Power Supply
wit
h this connection.
If the polarity of Fan Tray is reversed, Fan Tray can gain power from Power
Supp
ly and work fine.
By default:
+--------------+
+----------+
| | +-----------+ |
|
| (+)---Red Cable-----| |---Red Cable------(+)
|
| Power Supply | | Connector | | Fan
Tray |
| (-)---Black Cable---| |---Black Cable----(-)
|
| | +-----------+ |
|
+--------------+
+----------+
External Wire
|<---------------------->|
Reverse polarity of Fan Tray:
+--------------+
+----------+
| | +-----------+ |
|
| (+)---Red Cable-----| |---Black Cable----(+)
|
| Power Supply | | Connector | | Fan
Tray |
| (-)---Black Cable---| |---Red Cable------(-)
|
| | +-----------+ |
|
+--------------+
+----------+
External Wire
|<---------------------->|
-----------
Cheers,
Chris.
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Chris Roberts
> Sent: 08 January 2005 06:54
> To: jexum at harding.edu; 'Tim Winders'
> Cc: cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] Problems with 6509 upgrade kit
>
> Thanks for the ideas.
>
> We have the chassis running at 220-240V (UK) so all should be
> well there.
> We've now tried 2 different upgrade kits, both of which have
> the same problems, with 4 different PSUs. We're going to try
> some things with the power for our next attempt however all
> seems well on the power front, with 'sh power' giving good
> results (900W / 1900W used).
>
> TAC recommended the command 'hw-module fan-tray version 2',
> however this doesn't exist in our 12.2(18)SXD IOS, although
> its listed on the website as supported by the Sup720 in
> 12.2(14)SXD. TAC also claim it should never be needed on a
> Sup720, however our fan-tray is definitely being recognised
> as a WS-C6509-NEB-FAN rather than a FAN2, and it 'feels' like
> there's something simple like this missing.
>
> TAC also claim it is most likely a chassis problem, and want
> us to send them the Sup720s, all the PSUs and fan trays for
> testing and proving in the lab so that they can then rule our
> chassis as the problem by default.
>
> :(
>
> Cheers,
> Chris.
>
> > -----Original Message-----
> > From: jexum at harding.edu [mailto:jexum at harding.edu]
> > Sent: 13 December 2004 16:06
> > To: Tim Winders
> > Cc: Chris Roberts; cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] Problems with 6509 upgrade kit
> >
> > You are correct on that. Here at Harding we have the 2500W
> PS and we
> > tried 110v without luck. Same PS at 220V and all is well.
> >
> > In our case, the SUP720 was fine but two of our line cards did not
> > work correctly till the power issue was resolved. It may have been
> > the SUP720 was not working correctly either but without "real"
> > connectivity who knew?
> >
> > John Exum
> > Network Manager
> > Harding University
> >
> > ----- Original Message -----
> > From: Tim Winders <twinders at southplainscollege.edu>
> > Date: Monday, December 13, 2004 6:48 am
> > Subject: Re: [c-nsp] Problems with 6509 upgrade kit
> >
> > > Make sure your input to the 3000W power supplies is correct. I
> > > believe you need 20A 220V input to be able to output the
> > correct power
> > > to the Fan Tray. Those power supplies will work with
> > either 110V or
> > > 220V input, but will only give you partial output capabilities if
> > > connected to 110V.
> > >
> > > --
> > >
> > > Tim Winders
> > > Associate Dean of Information Technology South Plains College
> > > Levelland, TX 79336
> > >
> > > On Mon, 13 Dec 2004, Chris Roberts wrote:
> > >
> > > > We (unsuccessfully) attempted to upgrade one of our 6509 chassis
> > > to Sup720s
> > > > at the weekend. Of all of the high tech components that could
> > > have had
> > > > problems, it seems the fan tray or PSUs failed. :(
> > > >
> > > > I'm wondering if anyone has seen similar. We upgraded the
> > > chassis with the
> > > > WS-C6509-NEB-UPGRD kit (high speed fan tray, and pointless
> > > seeming backplate
> > > > change), and the power supplies to the WS-CAC-3000W. Connected
> > > the appalling
> > > > external power connectors to the power supplies and the fan
> > > trays. Upon
> > > > booting, the fans did not spin, and the system complained that
> > > the fan tray
> > > > had failed. Neither power input on the fan tray was showing a
> > > green light on
> > > > input power, however both PSUs had a green light on output
> > > power. We checked
> > > > the cables/cabling between the two and all seemed to be good.
> > > >
> > > > What I found odd however, is that on booting the system,
> > the system
> > > > complained not only of a fan tray failure, but also had a major
> > > fault and
> > > > complained that the fan tray needed upgrading. I can only assume
> > > that> without the external power the card appears to the chassis
> > > as a normal fan
> > > > tray and not a FAN2 tray? I also find it a bit odd that the PSUs
> > > read an
> > > > output of 42V DC/17A (which is repeated in the manuals) and the
> > > fan tray
> > > > states an input of 48V DC.
> > > >
> > > > Also, after replacing the Sup1As in the chassis, the Sup1As
> > > complained of a
> > > > lack of power and failed to boot the two WS-C6348-RJ-45 cards.
> > > > Unfortunately, by this point our time was limited, so I didn't
> > > have time to
> > > > fully investigate why this was happening, and we simply
> > replaced the
> > > > original 1300W PSUs. Is there an incompatibility between the
> > > Sup1A cards and
> > > > 3000W power supplies?
> > > >
> > > > Anyone think of anyone I've missed before I RMA the power
> > > supplies and the
> > > > fan trays?
> > > >
> > > > Cheers,
> > > > Chris.
> > > >
> > > > ---
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