[Skimmertalk] Moving a trio of RP over to a separate LAN - how to assign static fixed IP to the Red Pitaya

[Bob Wilson, N6TV]

The method for assigning a fixed IP address to the RP is documented
somewhat tersely here, under "Network Configuration".

http://pavel-demin.github.io/red-pitaya-notes/alpine/

You'll have to get into the weeds and edit  /etc/dhcpcd.conf as explained
in the referenced link.

But, if you're using the RP-16, it requests *two* IP addresses with a
"phoney" Mac address (FF substituted for 2nd to last byte) for the second
8-slice receiver, using this command in start.sh:

ip link add mvl0 link eth0 address $address type macvlan mode passthru

I don't know if that command works with fixed IP addresses; it probably
requires a real DHCP server.

In sum, I don't think trying to make all that work is worth the effort.

73,
Bob, N6TV


On Thu, Mar 9, 2023 at 10:04 PM Jeff Blaine <KeepWalking188 at ac0c.com> wrote:

> My key question is how to assign a static IP to the RP Skimmer receiver?
>
> The background is this...
>
> I have 3 RP now and in a busy contest condition, the combined network
> utilization of the 1G link is pretty significant.  Not nearly the point
> where it swamps the network, but it's easily 30-50% of network capacity
> in these conditions.
>
> The computer I use for the skim server host has 2 LAN cards built into
> the motherboard.  So I'm thinking that I could probably hang the 3 RP
> and a switch off of the 2nd LAN port which would isolate all that
> Skimmer chatter to the 2nd LAN port and keep it all from my primary
> LAN.  As all the skimmer apps (as well as HSSDR) run on that computer
> and no where else in the shack, I won't need to bridge the two Ethernet
> connections on the motherboard.
>
> There is no gateway bound traffic and I don't want to hang a router off
> this mini-network just to provide DHCP so I'm thinking that I probably
> could make this work cleanly if I can figure out how to assign the 3
> individual RP with static fixed IP.
>
> Appreciate any advice there.  And if any other of you fine fellows may
> have been there, done that as well.
>
> --
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
>
> _______________________________________________
> Skimmertalk mailing list
> Skimmertalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/skimmertalk
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.contesting.com/pipermail/skimmertalk/attachments/20230309/e4b6190a/attachment.html>