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Author Topic: DGS-2208 Switch - What are the "1000" and "100" LEDs for?  (Read 5638 times)

tbessie

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DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« on: October 02, 2009, 12:39:21 AM »

Hello all...

Since there's now DGS-2208 forum, and since I have a DIR-655, I thought I'd ask this here. :-)

I've always wondered (and especially now, since I'm trying to debug some network issues) what the 2 LEds on the front panel of the DGS-2208 switch are for.

In the documentation, it doesn't make it clear.  It says "The LED indicators of the Switch include Power, Link/Act, 1000Mbps, and 100Mbps".

However, then it has a section that says "Speed - 1000Mbps/Green; 100Mbps/Amber; 10Mbps/Off: This indicator is amber-colored when the port is connected to a 100 Mbps Fast Ethernet Station; it is green when the port is connected to a 1000Mbps Ethernet station; it is not illuminated when the port is connected to a 10Mbps Ethernet station".

The thing is, it's talking there about the LEDs for each port, not about the 2 (and 2 only) "1000" and "100" LEDs.  I understand how the color will show the speed o***iven port, but what are the two LEDs - unrelated to any port - about? The manual says nothing about it.  I might take some guesses (eg. "Does it mean the whole switch is operating at 1000 or 100 or 10 Mbps? Does it mean at least one port is? What?"  But that would be just guessing.

Does anyone know for sure what those LEDs are for?

- Tim
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lizzi555

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Re: DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« Reply #1 on: October 02, 2009, 02:29:44 AM »

Most D-Link Switches have a Power and a Status LED.
One should show steady green light when the switch is powered on and one should flash each second if status is ok.
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Techgee

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Re: DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« Reply #2 on: October 02, 2009, 09:25:12 AM »

On my DGS-2208 I've never seen the labels "100" (amber), "1000" (green), "Link", and "Act" light up.  I don't believe there are LEDs behind them.  I interpret them only as colored labels describing the functions of the 2 LEDs above and below each of the 8 port numbers.

Under Technical Specifications (pg. 27) it says:

"Diagnostic LEDs
    Per Unit: Power
    Per Port: Activity/Link, 100/1000M"

Also note the unit as a whole has a prodigious 16Gbps switch fabric forwarding capacity.
« Last Edit: October 02, 2009, 09:28:49 AM by Techgee »
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tbessie

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Re: DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« Reply #3 on: October 02, 2009, 09:48:32 AM »

On my DGS-2208 I've never seen the labels "100" (amber), "1000" (green), "Link", and "Act" light up.  I don't believe there are LEDs behind them.  I interpret them only as colored labels describing the functions of the 2 LEDs above and below each of the 8 port numbers.

Under Technical Specifications (pg. 27) it says:

"Diagnostic LEDs
    Per Unit: Power
    Per Port: Activity/Link, 100/1000M"

Also note the unit as a whole has a prodigious 16Gbps switch fabric forwarding capacity.

Funny that they'd make them *look* a bit like LEDs. :-)

If 16Gbps truly prodigious?  I've got nothing to compare it to, so wasn't sure if you're kidding or not.

- Tim
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Fatman

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Re: DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« Reply #4 on: October 02, 2009, 10:32:42 AM »

They are indications of what the port speed LEDs mean.

And given we have 8 ports here at 1000mbps full duplex (so 2,000Mbps per port) , a 16Gbps (16,000 Mbps) fabric would be line speed to every port, which sounds good to me.
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non progredi est regredi

Techgee

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Re: DGS-2208 Switch - What are the "1000" and "100" LEDs for?
« Reply #5 on: October 02, 2009, 10:39:40 AM »


If 16Gbps truly prodigious?  I've got nothing to compare it to, so wasn't sure if you're kidding or not.

- Tim


"Prodigious" might be too much of a superlative.

16Gbps for 8 1Gig ports means theoretically (and likely very close to it in practice) all 8 ports can send 1Gig and receive 1Gig, all at the same time.  Which, of course, is what a 1Gig Switch should do.

My point was that 1000/100 as a status for the entire Switch makes no sense given the full throughput capacity of the device.
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