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SG110-16 Direct to Xfinity Gateway -- Network Loop?

ALittleGreen
Level 1
Level 1

Helllo Cisco Friends,

 

To keep this very simple, I reduced my network to simply

the Xfinity Wireless Technicolor Gateway (with the Wireless Turned off)

and simply plugged an Ethernet Cord from the back of it, directly to a brand new Cisco SG110-16 Small Business Switch.

 

Nothing else is plugged into the switch. Wireless is off. Simply Xfinity Gateway to the Switch.

 

The LED's on the connected Port:

LEFT Side: Flashing Amber

Right Side Solid Green

 

Other posts, describing the LED functions of this switch, say that this LED combination indicates a Network Loop.

 

But how? The ONLY thing plugged into the switch is the Xfrinity Gateway,,,nothing else, but power.

 

How can I have a Network Loop with only the Gateway plugged into the switch?

 

Is that LED Legend posted elsewhere incorrect?

 

What I do notice is that when I FIRST plug it in, I get the nice pretty flashing green and solid green (as would be expected), but then it changes to the Flashing Amber / Solid Green...so it kind of seems that something is wrong, but what?

 

When I DO plug in other devices they seem to work pretty well, but speeds are a bit erratic. 

 

Can anyone offer any insight as to what is going on?

 

Thank you for your consideration.

 

Mark in Boston

 

 

 

 

 

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