James Harper via luv-main writes:
Your router had to support the option 60. It cannot be done separately. The option 60 tells the client the ip and path to you tftp server.
That is incorrect. You can have a regular DHCP server, and then have the boot options supplied by the PXE server (Microsoft's WDS does this). The communication goes (very approximately) like:
Client: Give me the info I need to boot DHCP Server: Here is an IP address, subnet mask, DNS Server, gateway, etc PXE Server: Here is your tftp server and path
It is possible to run PXE on the same server as the DHCP server, but it's a bit hacky. In this case the DHCP server sets option 60 that tells the client to do another DHCP request on port 4011, so it doesn't try to use the standard DHCP port. (http://www.experts-exchange.com/articles/2978/PXEClient-dhcp-option-60-what-...)
You can still do it the old fashioned way and just set next-server and path on the DHCP server, which would work but my DHCP server is in the router and doesn't support this.
I don't understand how this works. Assuming the DHCP server can't be configured, i.e. it does not send 'next-server' (66) & 'filename' (67), how does the PXE server provide it? They write: | When using a PXEService, dhcp options 66 and 67 are sent to the PXE | clients by the PXE service itself, not by DHCP service. So the DHCP client does a DISCOVER, and the DHCP and PXE servers both reply with independent OFFERs, and the client somehow merges them together? <VERY CONFUSED> Can you share a .pcap of where this is happening? ...ah, never mind: https://en.wikipedia.org/wiki/Preboot_Execution_Environment#Integration It sounds like you're talking about this "proxyDHCP" thing, and "the client somehow merges them together" is right. YUK. PS: Just so we're all on the same page re DHCP options, https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#DHCP_optio... | 60 Vendor class identifier minimum of 1 octet | 61 Client-identifier minimum of 2 octets | 66 TFTP server name minimum of 1 octet | 67 Bootfile name minimum of 1 octet