Comtrol eCos - Manual (Page 114)

Chapter 1. Getting Started with RedBoot
RedBoot network gateway
RedBoot cannot communicate with machines on different subnets because it does not support routing. It al-
ways assumes that it can get to an address directly, therefore it always tries to ARP and then send packets di-
rectly to that unit. This means that whatever it talks to must be on the same subnet. If you need to talk to
a host on a different subnet (even if it’s on the same ‘wire’), you need to go through an ARP proxy, provid-
ing that there is a Linux box connected to the network which is able to route to the TFTP server. For exam-
ple:
/proc/sys/net/ipv4/conf/ < interface>/proxy_arp where < interface> should be replaced with
whichever network interface is directly connected to the board.
Verification
Once your network setup has been configured, perform simple verification tests as follows:
• Reboot your system, to enable the setup, and then try to ‘ping’ the target board from a host.
• Once communication has been established, try to ping a host using the RedBoot ping command - both by IP
address and hostname.
• Try using the RedBoot load command to download a file from a host.
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