# Problem whit ethernet in RCM2100

**URL:** <https://forums.digi.com/t/problem-whit-ethernet-in-rcm2100/9436>\
**Category:** Rabbit\
**Created:** [March 3, 2011, 9:09pm UTC](https://forums.digi.com/t/problem-whit-ethernet-in-rcm2100/9436 "2011-03-03T21:09:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rodogodo](https://avatars.discourse-cdn.com/v4/letter/r/ee7513/32.png) [@rodogodo](https://forums.digi.com/u/rodogodo)\
**Post date:** [March 3, 2011, 9:09pm UTC](https://forums.digi.com/t/problem-whit-ethernet-in-rcm2100/9436/1 "2011-03-03T21:09:19Z")

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Hello,  
I’m trying to use ethernet whit a RCM2100 board. I tested the samples programs: pingme.c, ping.c, pingyou.c, but the board never responded to “ping” that I send from my PC. I’m using a crossover cable.  
The function \_ping return -1.  
Hope you can help me.  
Rodolfo