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Altera_Forum's avatar
Altera_Forum
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14 years ago

Ethernet Between 2x DE2-115. One fails DHCP! Not all the time

Hi Fellas,

I've got a Terasic TPAD and a DE2-115the TPAD is a DE2-115.

I'm running identical ethernet firmware and software on them except a switch gives them each a different IP and MAC.

I have sucessfull comms to and from PCs for each IP/MAC pair.

Now for some reason the TPAD regardless of IP or MAC. Will fail its DHCP, but not all the time, just most of the time as in 4 of 5 or more (enough that its useless). A packet sniffer sees the DHCP replies on the network. So its a case of the packets not making it or the stack rejecting it i suppose?

Is there anything regards to using the same boards, that i've over looked?

Its really cheesing me off and costing me precious time as i have to stop and just keep trying to re-download and reset everything in vain attempts to get it back working.

Any ideas?

I can supply plenty more infor if needed.

8 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    What stack and what DHCP server? If it's InterNiche, then it always had problems with DHCP. Afaik it didn't work with Windows Server DHCP at all. There's InterNiche version 4, but not ported to support Nios. I'd offer to check LwIP.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Thanks Soc. I definatley will in the furture when i take this project further in my own time; these stack has infuriated me.

    Unfortunately to make my University due dates its not an option. I'm in discussions with Terasic in order to ensure it is the Ethernet port 0.

    I've ported my project to Ethernet Port 1 and so-far so good for DHCP, but there may be other issues.

    Speaking of which. The "No free buffers error" that seems common, appears to me to be caused by bad program flow. Have you had experience with this in the past?
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Did you get this working on Port 0? I am having the same issues.

    Port 1 works fine, Port 0 fails most of the time.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    No i never did get it working. I'm still in arguements with terasic about it. They use their webserver example as proof of functionality, but i has no software reset, so it proves nothing because it works most of the time off the bat. i got some more tests to do for them. I'll let you know. If i forget PM me.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Let me know if I can help. I have been trying to get Port 0 to work but I have not had any luck.