stemora wrote on Thursday, August 17, 2017:
Hello there,
I’m compiling FreeRTOS 9.0.0.0 + TCP 160919 for LPC1778.
On the run of the board I send the DHSP request: sniffing with wireshark I see 3 DHCP requests and a number of ARP requests (?).
No reply from the DHCP sever.
1003 68.228709 0.0.0.0 255.255.255.255 DHCP 309 DHCP Discover - Transaction ID 0x2ae6
1022 81.701502 0.0.0.0 255.255.255.255 DHCP 309 DHCP Discover - Transaction ID 0x2ae7
1029 91.951347 0.0.0.0 255.255.255.255 DHCP 309 DHCP Discover - Transaction ID 0x2ae8
4979 122.497600 Metrohm_10:15:11 Broadcast ARP 60 Gratuitous ARP for 0.0.0.0 (Request)
8055 152.497153 Metrohm_10:15:11 Broadcast ARP 60 Gratuitous ARP for 0.0.0.0 (Request)
…
Frame 1003: 309 bytes on wire (2472 bits), 309 bytes captured (2472 bits) on interface 0
Ethernet II, Src: Metrohm_10:15:11 (00:12:13:10:15:11), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68, Dst Port: 67
Bootstrap Protocol (Discover)
VSS-Monitoring ethernet trailer, Source Port: 12
Checking on the DHCP server we don’t see any request (?): possibile that the request is blocked by a switch ?
If yes,why?
My guess is that the package is not malformed … is it ?
Thanks