Hi,
I have a problem that seems same as reported here: AZ3166 board cannot connect to Mosquitto running on Synology NAS - Using Arduino / Networking, Protocols, and Devices - Arduino Forum and also started in same way (I tried to connect to MQTT server running on Synology).
In essence it seems to me that packets (ARP, ICMP) from Synology to MXCHIP are simply ignored. I have two Synology machines (214play, 920+) and the behaviour is the same for both. There's no issue for other computers - I can ping MXCHIP and can connect to a port from MXCHIP to other computers.
In following examples, I used port 455 as all my servers provide it. The scenario below is the same for both Synologies and packet capture was done on router.
- MXCHIP --> Windows machine (192.168.1.10):
- ARP: who has 192.168.1.10?
- ARP: Windows reply, I do
- Connection to port 455 is established
- MXCHIP --> Synology (192.168.1.20, or .14)
- ARP: who has 192.168.1.20?
- ARP: Synology replies: I do
- ARP: who has 192.168.1.20?
- ARP: Synology replies: I do
- ARP: who has 192.168.1.20?
- ARP: Synology replies: I do
- ARP: who has 192.168.1.20?
- ARP: Synology replies: I do
And connection fails with error NSAPI_ERROR_NO_CONNECTION -3004 - "not connected to a network".
Any ideas? Thanks!
G