Ethernet Shield W5500 not starting

Dear Arduino Fans: I am kindly asking for help or guidance in configuring my Ethernet Shiel attached to an Arduino UNO R3. The local vendor in argentina delivered to me an special board with the Wizne chip mounted on a daughter board over the Shield. There are no LEDs on that board to show teh status of tle link, onle a green led on the front side of the female RJ45. The chip itself is W5500 vice W5100. Following the manufacturer instructions I have downloaded an replaced the original Ethernet Libraries of the Arduino IDE. Y repeated the process with IDE 1.05, IDE 1.6.4 and over the latest one 1.6.7. Finally, I can compilate and dowload the Ethernet Examples from the IDE, but no link can be stablished. When the code is running and a proper RJ35 is conecting the Shield with an Ethernet Switch, the LED on the Shield turns on but the associated LED on the port of the switch remain off. Obviusly, in this condition when I try to send a ping from the PC to the shield, no packet is received back.
Your comments will be highly appreciated. Jose, Buenos Aires

The w5500 requires a different library.

Download and import this library, then change the include to
#include <EthernetV2_0.h>
in your code.

Hi Tim (imagine meeting you over here!),
I use that lib but don't have it in front of me. Does it work natively with the 5500's or do you have to edit the util config and main EthernetV2.h to include the 5500 segments, like we do with the EthernetMod lib?

I don't have a w5500, but those here who do say it works without any mods. I'm just taking their word for it. What mods do you need to make to EthernetMod? Does it work with the w5200 without the mods?

edit a quick Google search turned up this library.

Says it is good for the w5100, w5200, and w5500. It requires a mod to the w5100.h file. You must change the define to your wiznet model.

I've never had much luck with the 5500- mod or not and it's been hit an miss with the 5200s. The best one I have used for 5200 was the EthernetMod-W5x00 (sorry no link at the moment)
At one point I was thinking it was all Seeed products but then I realized that half of the 5100s we have are Seeeds. And then we had that discussion last night in the other thread - going to try that for the 5200s that were acting up. I think it's more a carbon based error rather than silicon.