hEX / RB750Gr3: auto-negotiation issue with 1Gbs

Hi,

I’m facing issues trying to get 1G rate when connected directly to laptop or PC or even wifi ap. i have searched the forum and it seems some of them have similar behavior like this http://forum.mikrotik.com/t/rb750gr3-report-and-questions/102735/1 yet i’m not able to figure it out.

i would appreciate any hint to identify if it is something with my config or a limitation in this hardware version and can be solved by purchasing the newer version like the newer hEX / E50UG


[admin@MikroTik] > /export compact
# 2024-12-23 18:32:10 by RouterOS 7.17rc3
# software id = xxxx-xxxx
#
# model = RB750Gr3
# serial number = xxxxxxxxxxx
/interface bridge
add admin-mac=08:55:31:34:B4:7F auto-mac=no comment=defconf name=bridge port-cost-mode=short
/interface ethernet
set [ find default-name=ether1 ] comment=Uplink
set [ find default-name=ether2 ] comment="WiFi 1st DLINK" disabled=yes
set [ find default-name=ether3 ] comment="WiFi Router"
set [ find default-name=ether4 ] comment="WiFi6 2nd"
set [ find default-name=ether5 ] advertise=100M-baseT-half,100M-baseT-full,1G-baseT-half,1G-baseT-full,1G-baseX comment="My PC"
/interface pppoe-client
add add-default-route=yes disabled=no interface=ether1 name=pppoe-out1 user=ibraali
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp ranges=192.168.88.10-192.168.88.254
/ip dhcp-server
add address-pool=dhcp interface=bridge lease-time=10m name=defconf
/port
set 0 name=serial0
/interface bridge port
add bridge=bridge comment=defconf interface=ether2 internal-path-cost=10 path-cost=10 trusted=yes
add bridge=bridge comment=defconf interface=ether3 internal-path-cost=10 path-cost=10 trusted=yes
add bridge=bridge comment=defconf interface=ether4 internal-path-cost=10 path-cost=10 trusted=yes
add bridge=bridge comment=defconf interface=ether5 internal-path-cost=10 path-cost=10 trusted=yes
/ip firewall connection tracking
set udp-timeout=10s
/ip neighbor discovery-settings
set discover-interface-list=LAN
/ipv6 settings
set disable-ipv6=yes
/interface detect-internet
set detect-interface-list=all
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
add interface=pppoe-out1 list=WAN
/interface ovpn-server server
add mac-address=FE:5C:A4:18:5D:8B name=ovpn-server1
/ip address
add address=192.168.88.1/24 comment=defconf interface=bridge network=192.168.88.0
/ip dhcp-client
add comment=defconf disabled=yes interface=ether1
/ip dhcp-server network
add address=192.168.88.0/24 comment=defconf dns-server=192.168.88.1 gateway=192.168.88.1
/ip dns
set allow-remote-requests=yes servers=185.228.168.125,185.228.169.125
/ip dns static
add address=192.168.88.1 comment=defconf name=router.lan type=A
/ip firewall filter
add action=accept chain=input comment="defconf: accept established,related,untracked" connection-state=established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=invalid
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp
add action=accept chain=input comment="defconf: accept to local loopback (for CAPsMAN)" dst-address=127.0.0.1
add action=drop chain=input comment="defconf: drop all not coming from LAN" in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" connection-state=established,related hw-offload=yes
add action=accept chain=forward comment="defconf: accept established,related, untracked" connection-state=established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" connection-state=invalid
add action=drop chain=forward comment="defconf: drop all from WAN not DSTNATed" connection-nat-state=!dstnat connection-state=new in-interface-list=WAN
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" ipsec-policy=out,none out-interface-list=WAN
/ip ipsec profile
set [ find default=yes ] dpd-interval=2m dpd-maximum-failures=5
/ipv6 firewall address-list
add address=::/128 comment="defconf: unspecified address" list=bad_ipv6
add address=::1/128 comment="defconf: lo" list=bad_ipv6
add address=fec0::/10 comment="defconf: site-local" list=bad_ipv6
add address=::ffff:0.0.0.0/96 comment="defconf: ipv4-mapped" list=bad_ipv6
add address=::/96 comment="defconf: ipv4 compat" list=bad_ipv6
add address=100::/64 comment="defconf: discard only " list=bad_ipv6
add address=2001:db8::/32 comment="defconf: documentation" list=bad_ipv6
add address=2001:10::/28 comment="defconf: ORCHID" list=bad_ipv6
add address=3ffe::/16 comment="defconf: 6bone" list=bad_ipv6
/ipv6 firewall filter
add action=accept chain=input comment="defconf: accept established,related,untracked" connection-state=established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=invalid
add action=accept chain=input comment="defconf: accept ICMPv6" protocol=icmpv6
add action=accept chain=input comment="defconf: accept UDP traceroute" port=33434-33534 protocol=udp
add action=accept chain=input comment="defconf: accept DHCPv6-Client prefix delegation." dst-port=546 protocol=udp src-address=fe80::/10
add action=accept chain=input comment="defconf: accept IKE" dst-port=500,4500 protocol=udp
add action=accept chain=input comment="defconf: accept ipsec AH" protocol=ipsec-ah
add action=accept chain=input comment="defconf: accept ipsec ESP" protocol=ipsec-esp
add action=accept chain=input comment="defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=input comment="defconf: drop everything else not coming from LAN" in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept established,related,untracked" connection-state=established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" connection-state=invalid
add action=drop chain=forward comment="defconf: drop packets with bad src ipv6" src-address-list=bad_ipv6
add action=drop chain=forward comment="defconf: drop packets with bad dst ipv6" dst-address-list=bad_ipv6
add action=drop chain=forward comment="defconf: rfc4890 drop hop-limit=1" hop-limit=equal:1 protocol=icmpv6
add action=accept chain=forward comment="defconf: accept ICMPv6" protocol=icmpv6
add action=accept chain=forward comment="defconf: accept HIP" protocol=139
add action=accept chain=forward comment="defconf: accept IKE" dst-port=500,4500 protocol=udp
add action=accept chain=forward comment="defconf: accept ipsec AH" protocol=ipsec-ah
add action=accept chain=forward comment="defconf: accept ipsec ESP" protocol=ipsec-esp
add action=accept chain=forward comment="defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=forward comment="defconf: drop everything else not coming from LAN" in-interface-list=!LAN
/system clock
set time-zone-name=Asia/Dubai
/system note
set show-at-login=no
/system package update
set channel=development
/system scheduler
add interval=1d name=dlink on-event="/interface enable [find name=\"ether2\"]\r\
    \ndelay 7200;\r\
    \n/interface disable [find name=\"ether2\"]" policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon start-date=2023-06-18 start-time=\
    20:00:00
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN
/tool netwatch
add disabled=no down-script="ping test failed" host=8.8.8.8 http-codes="" interval=3s test-script="" type=icmp up-script="ping test working"

Have you upgraded firmware as well as RouterOS?
Have you tested with different LAN cables?

  • thanks. it was not upgraded, done now but same output.
  • yes. occasionally one of the ports moved to 1G but does not sustain for long time. it will go back to 100m after some time

there is a chance that all cables that are around me are not good but i usually keep my eye on CAT6 and all connectors to be CAT6.

Is it something that can be because of the power output of each interface. are there routers that have higher output than others or it is a standard. I'm ok to go for another model if this a hardware issue in this model.