[hpsdr] Hermes/Angelia and Ethernet problems

[Bryan Rambo]

Hi Mike,
 
Scott should jump in here with this one.  But I wonder if this has something to do with the "illegal Angelia MAC address" issue, reported here previously, that causes problems with managed switches that will reject such a MAC.  Apparently, cheaper less sophisticated, unmanaged switches will blissfully pass the illegal MAC and everything works fine again.
 
Same thing Scott?
 
73, Bryan W4WMT

  _____  

From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Mike Tubby
Sent: Saturday, September 17, 2016 3:36 PM
To: hpsdr at openhpsdr.org
Subject: [hpsdr] Hermes/Angelia and Ethernet problems


I have an Angelia board that I purchased from Anan about 18 months ago which I use as an SDR in my home 2m DX station on a 28MHz transverter IF and also use in the field with our contest group.

Currently I use the Angelia primarily on RX with CuSDR as I like the UI design and display.

The problem that I have with the Angelia is that it appears to be very 'touchy' (unreliable) with its Ethernet connection, obtaining a DHCP lease and talking to my PC.

In my setup I have:

�������� 1. my workstation PC - Dell T3610, 16Gb, 6-core Xeon, etc. with Gigabit Ethernet
�������� 2. my Linux server which is my default gateway and DHCP server
�������� 3. my Angelia board
�������� 4. Ethernet switch
�������� 5. Various other devices (computers, VoIP phones, etc)

If I connect everything in the shack via an old Netgear FS116 unmanaged 10/100Mbps switch then everything works fine - the Angelia performs Ethernet link negotiation and comes up, sends DHCP request, gets reply, sets up IP address, etc. after which running up CuSDR on the PC works when I hit 'Start' it performs auto-detect, finds the Angelia and comes up...

However this network set-up isn't practical for a range of reasons...�� I have a rack of servers in the garage and that's also where the internet comes in.�� I have have a machine (called "gate") that provides network services, firewall, NAT, NTP, DHCP etc. in the garage.

I have my main PC, the wife's PC, network printers, VoIP phones, etc. in the study/shack.�� At both ends there's a Netgeat GSM724T 24-port switch and a Gigabit fibre trunk runs between the switches.

If I plug the Angelia and my shack PC in to two ports of the switch in the shack and watch the DHCP server on gate with "dhcpdump" then I see my PC perform DHCP request, get a reply and come up as expected but when I turn the Angelia on I see nothing?�� What gives?�� Is the Ethernet implementation in Hermes and Angelia 'fragile' or incomplete?�� Is there a problem with link partner attributes? or timing when talking to managed switches?�� Does Hermes/Angelia assume that the link comes up very quickly and transmit DHCP request(s) too soon or without retries?

Is there something that can be done about this?

I really want to be able to use the Angelia from one or other of two locations in the house on the same local (switched) Ethernet.

I'm happy to spend some time collecting diagnostics/debug if this would help.


Regards


Mike G8TIC

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