[hpsdr] Hermes/Angelia and Ethernet problems

Scott Traurig scott.traurig at gmail.com
Thu Sep 29 09:54:31 PDT 2016


Jeremy--thanks for the clarification on the source of the MAC address.

Phil--yea, it's easier just to throw in the towel and run a fixed IP, but I
know how Mike feels. When you've got everything "just so" on your network
you want the radio to play along nicely as well.

Mike,

Resolving the illegal MAC address in the bootloader isn't that easy. There
are a great many Hermes, Angelia and Orion boards already out in the world.
The only mechanism to reprogram the bootloader build on the design is to
use a JTAG pod. So it's unlikely that many will want to do that. On the
other hand, it would be nice if a legal, locally administered MAC address
was put into newly shipping units and a new version of Bootloader produced
that worked with both the hold and new MAC addresses. Indeed, I'm not even
sure that the Bootloader cares about MAC address, I though it used a UDP
broadcast packet to discover the radio.

Now, back onto your problem...given that you said this configuration
doesn't work

>
>     d) single Netgear GS724 switch with SDR PC, Angelia, DHCP server -
> doesn't work
>

They are all on the same subnet, correct?

You might take a closer look at both the MAC address table in the GS724 as
well as DHCP process.

Is the MAC table populated with the radio MAC properly? If so, then using
Wireshark on your DHCP server machine at what point does the process break?
Does the discovery message go out from the radio? Does the offer message go
back to the radio? Etc.

73,

Scott/w-u-2-o
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