Posh switch - another cause of Audiophilia nervosa?

jon honeyball posted:

What firmware versions are people running?

My NDS is on the most up to date firmware version 4.4.

i meant on the switch

jon honeyball posted:

i meant on the switch

 

There are a lot of labels with lots of numbers on the switch. Can you point me in the right direction as I am not clever enough to use the switch management side of things.

you'll need to log into the switch

Jon, what are you looking for?

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(44)SE6, REL
EASE SOFTWARE (fc1)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 09-Mar-09 18:10 by gereddy
Image text-base: 0x00003000, data-base: 0x01100000

ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(44r)SE1, RELEASE SOFTWAR
E (fc2)

64K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:26:0A:F6:xx:xx
Motherboard assembly number : 73-11306-05
Motherboard serial number : FOC132xxxxxx
Model revision number : C0
Motherboard revision number : A0
Model number : WS-C2960PD-8TT-L
System serial number : FOC132xxxxxx
Top Assembly Part Number : 800-29361-02
Top Assembly Revision Number : D0
Version ID : V02
CLEI Code Number : COMS510ARB
Hardware Board Revision Number : 0x01


Switch Ports Model                           SW Version.   SW Image
------ -----         -----                               ----------              ----------
* 1        9         WS-C2960PD-8TT-L 12.2(44)SE6      C2960-LANBASEK9-M

nigelb posted:

 

Thank goodness this was an inexpensive experiment for Harry and the rest of us.

This is what swayed me. Nigel's original contention that the cost to experiment was comparatively peanuts in the context of the whole system was logical and persuasive. Seems that for most people it was of benefit, which is the icing.

well if people are comparing ostensibly the same thing and getting results, firmware version differences might well be a factor here, no?

I guess possibly.. Harry has been the only person who has posted who has an adverse effect, but I I am guessing he won't know how to extract the version info.

S

Jonn posted:

I tried a shielded mains cable with the Cisco today. Wasn't expecting much difference if any but surprisingly it did result in a bit more added clarity and definition, building on the strengths already noted.

What's remarkable is that for a cost of c£100 for the switch and shielded mains cable the improvements in sound is equivalent to changing from the standard interconnects to Naim SL or Chord STA @ £1000+ IMHO so top VFM

I agree,cleaner and klearer and faster bas not so overwelming and the music flow better to..I have the same cable,Chord C-more 90 euro in Sweden to day.I was chocked, much better,and with a " cheap " cable to a switch,this hobby is crazy .

Thinking of Powerline,the new Powerlite and other cables,have any other of you try something with the Cisco 2960?

Simon,my Cisco 2960 (thanks for the tip) run most of the time real cold (under handwarm) but time to time it runs a lot warmer ( quite a bit over Handwarm). Is this okej or is it something wrong with my Ciscoswitch. 80-85% under handwarm.

Other tips you have,for example where do you have the contact in the powerstrip,before or after the streamer and other tips maybee.

Simon again ,do you now if they have  changed anything in the Cicsco 2960 from 2007 and forward,thinking that a newer one can be better not just because the age.

Harry,try your Cisco again with another "better" powercord,my original was "crap" against Chord C-One.The upper level was better and if I remember right you have problem in that directions.Also thinking of witch ehternetcable you use,I have tryed  Chord C-stream and AQ Vodka (thanks HyngryHalibut) and nameless from Linn,for me the Vodka stays.The nameless from Linn sounds a little bit harsch in the topp if you understand my English .As you see I'm from Sweden,shall give you my Hifistory another time.

Simon again again ,your Cisco who started this,what firmware do you have in your Ciscoswitch,I think it's importent that we have the same for the best SQ.I no nothing about such thing,BUT...... have a friend who can fix it .

Peder

Peter, I don't know what causes your change in switch temperature, I suspect it doesn't really matter. I posted my 2960 firmware and hardware build here, again I don't think this matters much either.

https://forums.naimaudio.com/to...22#69004037371527722

Simon sorry   ,I write this early/very early in the morning,a little bit up on this side I see your firmware input.

About firmware-SQ,Linnstreamers (Klimax), when you upgrade firmwares it can be a big step up in SQ. Maybe as you say it don't matter on a Ciscoswith.....I don't now I'm no expert in switches.Have you listen to different firmwares sometimes on switches and wy do you think this don't matters,asking because I'm very intresting in this question.

About your hardware build,what year are your Cisco 2960 from,mine from 2011.

About Cisco-temp,they recommend that put on rubberfeet under the Cisco so air can circulate and cooling the switch.My Cisco

are running mutch cooler then handwarm (37degree) not need any more cooling .Can you or other here tell me how warm your Cisco's run,with the handwarm exemple.

Peder

Peder, I don't think the firmware matters much if at all in terms of SQ in the switch, because I consider the sound differences that some can hear are caused by the hardware design and implementation of the physical layer and synchronisation clocks (the electronics that drives and receives the voltages on the twisted pair cables). The firmware is, for the most part, for controlling the switch processor, the digital data layer, its implementation and protocols. This for the most part (unless the switch is heavily under load) will have in my opinion little to do with SQ.

But as JH suggests for those that know how to do a 'show version' it could be interesting to compare....just in case the firmware is doing something other than I think.

Simon

Simon .... thanks,now I'm with you, understand the differents streamers/switch.But,it happens so many times in my hifi/music life

that theory and practical not work together.Trying a 'show version' could be an interesting thing to do.I shall talk to my friend who nows about this.He shall also buy a Cisco 2960.He's building a new musicroom so it can take some time but it seems that we have a plan .

I am unable to get a used switch, is there a brand new switch with similar properties that will have a posited impact On SQ?  

Fleabay is your friend here. Just looked, several pre loved Cisco 2960 8-ports for sale.

I can not PayPal at the moment so not flea bay for me

Giving one of these switches a go...should arrive tomorrow.

Nothing ventured and all that.

G

GraemeH posted:

Giving one of these switches a go...should arrive tomorrow.

Nothing ventured and all that.

G

I will be interested to hear your thoughts Graeme.

I run HP 1810G-8 & Qnap NAS both with external linear power supply & seriously think that changing to Cisco with internal power supply makes no difference but please let me know if I should try one? Grounding with proper ethernet cabels is impacting as well.

https://commons.m.wikimedia.or...witch_HP_1810G-8.jpg

My IT manager has given me one of his spare Cisco units. Its a 1800  series model 1801 (think its actually a modem) but he says it can be used just as switch.  It appears to have all the correct connections on the back ie 8 ethernet ports.  I have not seen this model mentioned in this long thread, but will I be ok to use it to replace my simple BT switch and see if I can join in the 'fun'?

Gandalf_fi posted:

I run HP 1810G-8 & Qnap NAS both with external linear power supply & seriously think that changing to Cisco with internal power supply makes no difference but please let me know if I should try one? Grounding with proper ethernet cabels is impacting as well.

https://commons.m.wikimedia.or...witch_HP_1810G-8.jpg

Only by trying it will you know. 

Hungryhalibut posted:

Gandalf_fi posted:

I run HP 1810G-8 & Qnap NAS both with external linear power supply & seriously think that changing to Cisco with internal power supply makes no difference but please let me know if I should try one? Grounding with proper ethernet cabels is impacting as well.

https://commons.m.wikimedia.or...witch_HP_1810G-8.jpg

Only by trying it will you know. 

Yes I know, tried 3 different ones before & I belive that with linear power supply & e.g. AQ Vodka/Diamond cabling + own close switch with short connections to nas nds is the key, however, if NDS is so bad with TCP that certain Cisco makes it even better there must be something wrong, RFI/EMI can explain, flow control a bit but it cannot be that this so much about HP vs. Cisco vs others SW issue, HW it can be. Right?

DUPREE posted:

Be aware if this is an 1801 that the switch is only 10/100 and does not support gig. This is a router with an integrated switch and depending on licensing an integrated firewall. You can certainly use it as just a switch, but it does not support gigabit ethernet.

> On Jan 4, 2017, at 11:01 AM, Naim Audio Forums <alerts@hoop.la> wrote:
>

Neither do Naim streamers or the Cisco switch that is the subject of this thread. 100 is plenty for streaming music, and may even be preferable.