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pk2007
1 Copper

Dell PowerConnect POE (3424P and 3448P) switches problem

Hi,

 

I do have weird problem with Dell PowerConnect POE Switches

 

I do have one 3448P(main)  and two 3424P switches

 

First 3424P is connected to 3448P  thru G3 (gigabit)  ports (G3 on both switches) by regular cable and everything works fine (MDI/MDIX set to Auto)

 

Second 3424P I can not get work thru gigabit ports  - I have to use G4 port on main(3448P) switch and regular  port on 3424P or vice versa : use G3 or G4 ports on second 3424 and regular port  on 3448P - only in this configuration it works

 

So I know all port are working  - all cables are tested – and configuration of all 3424P switches are the same

 

Anything I am missing ? anybody ever had the same problem?  I like to have gigabit b/w all switches…

 

thank you for your help

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4 Replies
bh1633
3 Cadmium

Re: Dell PowerConnect POE (3424P and 3448P) switches problem

If the switch is in stacking mode, then g3 and g4 are stacking ports.

You can tell that the switch is in stacking mode if the "Master" led and a "Stack ID" led on the front panel are lit.

To get it out of stacking mode, reboot the switch, when the "Stack ID" starts to blink, press the "Select" button until no "Stack ID" leds are lit.

When the switch boots, g3 and g4 will be normal 1G ports.

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pk2007
1 Copper

Re: Dell PowerConnect POE (3424P and 3448P) switches problem

bh1633 - thank you for reply

none of three switches are in stackable mode.  LED are off  and thru  web management it  confirms it

 

 

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bh1633
3 Cadmium

Re: Dell PowerConnect POE (3424P and 3448P) switches problem

100 Mb Ethernet only requires 4 wires in the cable.  1000 Mb Ethernet requires 8 wires in the cable.  I suspect you have the wrong cables.  Take the cable that works and move it to the switches with the 1G ports that do not work and see if the problem is fixed.

Here is a cable reference:

http://www.zytrax.com/tech/layer_1/cables/tech_lan.htm

 

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pk2007
1 Copper

Re: Dell PowerConnect POE (3424P and 3448P) switches problem

you are absolutely right. One of the jacks had intermittent problem  - and last pair not always had a contact – thank you so much for your help

 

mistery solved 🙂

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