reDDevil

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About reDDevil

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  1. I checked all my devices in the network. All of them are set automatically to DHCP and have MTU 1500. iMac as well iMac-Dmitry:~ reddevil$ networksetup -getMTU en0 Active MTU: 1500 (Current Setting: 1500) But ifconfig run on iMac shows me one strange interface with MTU 2000 utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 inet6 fe80::d71d:9b73:2477:19ef%utun0 prefixlen 64 scopeid 0xe nd6 options=201<PERFORMNUD,DAD> I don't have any VPN, Tunnelblick or Back to my Mac installed Anyway this interface can't be a reason, I think
  2. Why do you recommend me to find correct MTU for internet connection? There is NO any problem with DOWNLOAD speed to DSM, there is a problem of READ speed from DSM to local divices with mtu 1500 set automatically in DSM
  3. I was revisiting our discussion to give it a second thought and doing some further tests on my system. First of all, it is never enough to show appreciation once again to you guys (flyride, ig-88) for your contribution and help on the matter. Secondly, I think I shall give flyride an extra credit for your critical judgment, whereas critical should for the most part stand for objective and unbiased approach, and where it comes to each of the following: - My conclusions leading to narrowing the problem source down exclusively to DSM are wrong. Or not ultimately right
  4. All devices are set to dhcp. Excluding just some of them to have the fixed IP address from the router. No more abnormal manual settings
  5. Let's go deeper into this issue. I agree to make as much experiments and tests as need with pleasure if it may be useful for community. I just don't know where to seek
  6. 1500 MTU can not be fixed manually in the settings of DSM unfortunately with unknown reason and I don't have enough experience to dig this issue deeper. Of course not. Sorry if I could offend you personally or community by my words. I just want to say that after my experiments as "blind kitten" I could find some threads through google by the request "dsm slow speed mtu" to see that some people found this way also as a decision of the problem. I have no Idea what may be wrong with a whole infrastructure. I gave you several times the explanations that other NASes including origina
  7. I am really sorry for misunderstanding caused because of my bad English. I just wanted to ask if you correctly understood according which adapter (internal or external) I used lspci -k to discover kernel driver used. Ten minutes ago I accidentally found a SIMPLE solution which solved slow reed speed issue to any device in my network (iMac, Windows, SmartTV, etc.) There seems to be a bug with MTU in DSM or a driver. By default the settings are Auto for MTU there but do not work correctly. To fix that it is necessary go to Control Panel / Network / Network In
  8. Are you sure? That was the answer to flyride on my question how to check current driver for internal NIC (not external AX88179) which I am trying to make working to check my guess with low read speed through internal NIC
  9. you are right, I can not see the difference. I just can say that the boot process is abnormal with unknown reason when USB NIC is in a port of NAS. And there is no serial port in ex485 unfortunately Thank you for explanation. The only strange thing that I can switch between adapters during installation process but not when DSM is installed The vid/pid of my USB NIC are 0B95/1790 and I can see it in a "FULL Hardware list support 6.2.0 synoboot DS3615xs" USB https://xpenology.com/forum/topic/34466-full-hardware-list-support-620-synoboot-ds3615xs-usb/
  10. I repeated a try to run my server with prepared flash drive for clean installation or with installed DSM through internal NIC with external USB NIC connected many times but none of try was successful LEDs on USB NIC are not blinking and DSM doesn't boot. Probably this is an issue of the hardware or BIOS settings which I can not change because hp ex485 is a headless machine and I can not check what's wrong is going there. How can you explain then that I could get USB NIC working after loading DSM to initial screen through internal LAN as hotplug and I even could make a full setu
  11. I tried both variants. Unfortunately DSM does not boot with USB NIC in the port even after successfull installation process. No LEDs, nothing. As soon as I disconnect it from the USB port and connect cable to the internal LAN, the DSM is up and running. But when it is loaded and I am trying to plug-in again the USB NIC nothing happens. No LEDs, no connect to DSM. Tried to use extra.izma 0.11 but it didn't help
  12. Hello! Please explain me how I can use correctly the external USB 3.0 LAN adapter with AX88179 chip to make a clean install of ds3617 DSM 6.3.2-25426 (or below) to let it work with that external adapter HP Ex485 MediaSmart server (headless) CPU: Intel Pentium Processor E5200 2M Cache, 2.50 GHz, 800 MHz FSB RAM: 2Gb DDR2 SDRAM 800 Mhz LAN adapter: Realtek 10/100/1000 (Gigabit) RJ45 Ethernet. With DSM 6.3.2 already installed through integrated LAN adapter the external USB doesn't work as "Plug & play", nor with DSM booted nor after reboot. I can not see
  13. 0000:02:00.0 Class 0200: Device 10ec:8168 (rev 02) Subsystem: Device 10ec:8168 Kernel driver in use: r8168 I can see these records there as soon as I connect an external USB LAN adapter. But I can not see it as a LAN2 in DSM as well as there is no new client in DHCP list of the router with MAC address of the adapter . If I reboot DSM with USB LAN adapter plugged, the DSM doesn't start [176300.759029] usb 2-3: new high-speed USB device number 4 using ehci-pci [176301.219237] ax88179_178a 2-3:1.0 eth1: register 'ax88179_178a' at usb-0000:00:1d.7-3, ASIX
  14. Well. I have no idea how it is possible but I could reach normal read speed ONLY from Windows (same rj45 outlet and cable as iMac is connected), only through CIFS, and only directly through IP address of DSM. Ie: If I am connecting to DSM as \\192.168.1.30\video the speeds in Lan Speed test and in File Explorer are: 87/98MBps. As soon as I am connected as \\HPEX485\video (ie manually or through Network icon in File Explorer) the speeds are 78/1.82MBps. At the same time, If I am connected to DSM from iMac through smb://192.168.1.30/video and trying to do LAN Speed test or download a file f
  15. But again... A friend of mine (who should join this discussion later) has same issue with absolutely different network setup. He also has lost packets from DSM to his iMac but in addition he has the original Synology where he also has lost packets to iMac but at the same time he has not any complaints for write/read speeds in his network with original Synology