Problema de rede da classe Arch Linux

Question

Eu tenho um problema a seguir. Eu instalei o Arch Linux em 17 computadores em uma sala, todos conectados a um switch Cisco. (Intel NUC5PPY, com SSD de 120 GB e 4 GB de RAM).

00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 21)
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 21)
00:13.0 SATA controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SATA Controller (rev 21)
00:14.0 USB controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller (rev 21)
00:1a.0 Encryption controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted Execution Engine (rev 21)
00:1b.0 Audio device: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller (rev 21)
00:1c.0 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #1 (rev 21)
00:1c.1 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #2 (rev 21)
00:1c.2 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #3 (rev 21)
00:1f.0 ISA bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 21)
00:1f.3 SMBus: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx SMBus Controller (rev 21)
02:00.0 Network controller: Intel Corporation Wireless 3165 (rev 81)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)

Quando eu inicio um computador, faço o login e o ping 8.8.8.8 ele geralmente funciona bem, mas quando eu ligo mais computadores, então o problema começa - o ping começa a ter uma grande perda de pacotes. Todo computador está em ethernet de 1000Mb / s, conectado via cabo (CAT5).

Nenhum erro (de rede) registrado, nenhum link de desconexão no dmesg.

Fim do ping stdout:

64 bytes from 8.8.8.8: icmp_seq=874 ttl=59 time=5.10 ms
64 bytes from 8.8.8.8: icmp_seq=875 ttl=59 time=6.15 ms

--- 8.8.8.8 ping statistics ---
875 packets transmitted, 549 received, 37% packet loss, time 879408ms
rtt min/avg/max/mdev = 1.972/3.114/12.649/1.729 ms

Quando eu conecto qualquer outro computador (por exemplo, meu ThinkPad X240) a qualquer porta de switch, a Internet funciona sem problemas, sem perda de pacotes.