How to upgrade Synology NAS network from 1Gbps to 2.5Gbps

Guestbook

Synology NAS DS920+ with two 1Gbps ethernet adapters. There is an affordable and easy upgrading its gigabytes network path to 2.5Gbps.

Login Synology NAS Admin UI and run Control Panel -> Network -> Network Interface

Installation before

  • Get a USB 3.0 Ethernet Adapter 2.5Gbps with Realtek RTL8156 / RTL8156B / RTL8156BG chipset, e.g., UGREEN 2.5Gbps USB-C Ethernet Adapter:

UGREEN 2.5Gbps USB-C Ethernet Adapter

  • Find out the architecture name of CPU in NAS. For example, Synology DS920+ is equipped with Intel Celeron J4125 CPU. The architecture name of this processor is Geminilake.

  • Go to driver releases site https://github.com/bb-qq/r8152/releases and download the latest version e.g. r8152-geminilake-2.17.1-1_7.2.spk, Synology DSM 7.2 and above, use packages with the suffix _7.2.

  • Login Synology Admin UI, then go to Package Center -> Manual Install and choose a driver package downloaded from above step.

Package installation

Installation warning

Installation confirmation

  • The installation will fail at the very first time.

Installation failed

  • Then ssh into the NAS, and run the following command:
1
$ sudo install -m 4755 -o root -D /var/packages/r8152/target/r8152/spk_su /opt/sbin/spk_su

and also enable multiple identical USB devices, which SAME products have the SAME serial number:

1
$ sudo bash /var/packages/r8152/scripts/install-udev-rules

Installation fix

1
2
3
4
$ sudo bash /var/packages/r8152/scripts/install-udev-rules
Updating Hardware Database Index...
UDEV rules have been installed to /usr/lib/udev/rules.d
lrwxrwxrwx 1 root root 50 May 24 17:13 /usr/lib/udev/rules.d/51-usb-r8152-net.rules -> /var/packages/r8152/scripts/51-usb-r8152-net.rules

and continue / retry the installation .

  • Reboot NAS.

  • Login Synology Admin UI, Package Center -> Installed -> RTL8152/RTL8153 driver and check new installed Realtek network adapter driver is running:

Running

  • Control Panel -> Network -> Network Interface and check the new network interface LAN 3 and Lan 4 have been turned on, with MTU / jumbo frame enabled 9000:

New network interface

Bind the USB network adapter and run iperf3 network performance test:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
$ iperf3 -c 192.168.0.244 -B 192.168.0.229
Connecting to host 192.168.0.244, port 5201
[  5] local 192.168.0.229 port 46171 connected to 192.168.0.244 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   281 MBytes  2.36 Gbits/sec    0    450 KBytes
[  5]   1.00-2.00   sec   281 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   2.00-3.00   sec   280 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   3.00-4.00   sec   281 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   4.00-5.00   sec   281 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   5.00-6.00   sec   281 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   6.00-7.00   sec   281 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   7.00-8.00   sec   280 MBytes  2.35 Gbits/sec    0    450 KBytes
[  5]   8.00-9.00   sec   281 MBytes  2.36 Gbits/sec    0    450 KBytes
[  5]   9.00-10.00  sec   281 MBytes  2.36 Gbits/sec    0    670 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  2.74 GBytes  2.35 Gbits/sec    0             sender
[  5]   0.00-10.05  sec  2.74 GBytes  2.34 Gbits/sec                  receiver

iperf Done.

References

Contents

  1. References