Using Link Local when DHCP not available

John K0TG

When I take the 6600M to a site that does not have Internet available (or DHCP source), I connect the radio to the copper port on my PC. The two devices talk to each other using Link Local addresses (169.254.x.x). The PC is connected to the Internet via WiFi and a hotspot I have along. This has worked well.

My question is. If I had the 6600M and PGXL on a switch and the PC connected to that, will Link Local work between all of these devices. Will the PGXL support Link Local? I think it is native to the spec. Not sure in real world use though.

BTW, the Internet access on the WiFi side is only for the laptop. THe radio has no access or need to access it.

Thanks, John K0TG

David Decoons, wo2x

The PGXL will support link local but TGXL defaults to a 192.168.x.x subnet.

My suggestion if you are planning on using the equipment without Internet access is to still use a home router to provide DHCP service and provide IPs to the equipment. Set DHCP reservations for the equipment rather than static IPs. This way if the router ever gets changed to one on a different local subnet you won’t run into problems communicating to the equipment.

Dave wo2x

John K0TG

Thanks Dave,

I do not have the TGXL yet, but may at some point. So that is good to know.

Sounds like I will be fine to connect the 6600M, PGXL and PC to a switch and operate the way I have been. I will have to play with that once the PGXL comes.

You say the TGXL defaults to the 192.168.x.x network. I assume it will accept any address via DHCP? I run 10.x.x.x here.

Thanks Dave es 73, John K0TG

David Decoons, wo2x

Yes, it will look for DHCP server first, then default to its default IP. As of current firmware the TGXL does not default to link local.

73

Dave wo2x