naimuniti and ethernet
Posted by: balma01 on 15 November 2010
In my house I've a centralized "adsl router /dhcp server", from there a 20mt ethernet cable goes inside my house and is connected to my private switch. From my switch a 10mt ethernet cable reach the room where I have my naimuniti.
If I connect the uniti to this cable it doesn't get an IP address and on the network display I see NO NETWORK,
If I connect a notebook to the same cable I get an address from the dhcp.
If I connect a second switch to the cable and I connect the naimuniti to the second switch, the uniti works well and get an ip from the dhcp.
It seems that the network signal is 'too low' for the naimuniti and needs to be repeated by a switch. Does anybody have an idea about it?
Thanks
mb
Posted on: 15 November 2010 by Peter_RN
Hello mb........That is indeed strange, there should be no problem with cable lengths etc as they are well below max allowable lengths, and anyway, you say a computer connects OK.
The only thing I can think of is whether or not you initially connected in the correct way; by which I mean connect the RJ45 cable and then switch the unity on. If you switch on without the cable connected it will assume you are connecting wireless. Of course for this to be the case you would have to of booted after trying the second cable.
Can't think of another reason for this to occur; but please post again when you find the cause.
Best regards
Peter
Posted on: 15 November 2010 by 0rangutan
A few ideas:
1. If a free ISP giveaway, replace the ADSL router with a decent one. Many Naim users have fixed their problems through this approach (£2000 hifi atached to £20 router...)
2. Set aside a static IP address from your router's DHCP range and manually assign this on the Uniti.
John
Posted on: 15 November 2010 by balma01
I always connect the ethernet cable and then switch the unity on. My switch is a 20€ 10/100 switch, I'll replace it with a better one. Does somebody know if the naimuniti ethernert port is a 10/100 or a 10/100/1000 ?
Posted on: 15 November 2010 by David Dever
10/100
Posted on: 15 November 2010 by Michael Chare
I would suggest configuring the Uniti with a fixed IP adddress.
Posted on: 15 November 2010 by garyi
I wonder if the cable between your switch and uniti is configured correctly?
It might be the switch or laptop can auto negotiate various configurations of ethernet lead but the uniti cannot?
(I am guessing here)
FOr instance if you are using a patch lead and not a cross over lead.
Posted on: 16 November 2010 by balma01
maybe I'm using crossover cables but I don't know.My cables are inside the wall and from the plugs is not possible to understand how they are connected (I cannot dismount the plugs). I'm looking for a way to understand it with 2 notebooks....does anybody know some tips and tricks?
Thanks again
Posted on: 16 November 2010 by Michael Chare
You appear to have two ethernet switches. What happens if you use the other switch as your 'private switch'?
Posted on: 16 November 2010 by balma01
If I use the second switch as my private switch the problem is the same and if I exchange the position of the 2 switches the problem is solved again, the last test I done is to attach the uniti directly to the router just before my private switch and it works. So I think that the problem is in the cable between my private switch and the uniti....I need a tool to verify if the cable is cross or what else... Thanks (anyway the uniti with n-sats and n-sub connected to a upnp server is the system I dreamt....it's terrific system....)
Posted on: 16 November 2010 by Guido Fawkes
quote:
I need a tool to verify if the cable is cross or what else.
you can just look at the rj45 plugs - if both pugs are the same wiring layout then it is straight through
Posted on: 16 November 2010 by balma01
My cables are inside the wall and from the plugs is not possible to understand how they are connected (I cannot dismount the plugs). I'm looking for a way to understand it with 2 notebooks....does anybody know some tips and tricks?
Posted on: 16 November 2010 by Jack
What type of switches are you using (make/model)?
When you said your Laptop works and the Uniti works from the second switch but not the first then did you actually do something and proved it to be working?
Posted on: 16 November 2010 by Michael Chare
My explanation is that your switches do not have 'auto MDIX' but that your laptops do, and you are using a crossover cable. It is just possible that one port on the switches is different so that they can be daisy chained.
If you have such a port the Uniti might work with the existing cable. Alternatively buy another crossover cable and an rj45 - rj45 coupler.
Google for 'auto MDIX laptop'! Apparently they are not that uncommon.
