SNR ME2 SFP very slow speed with VLAN

Hi.

Firmware Version OpenWrt 23.05.2 r23630-842932a63d / LuCI openwrt-23.05 branch git-24.040.70644-45b9e79

I'm have problem - very slow speed with vlan filtering enabled.
i'm using iperf3 to test speed with openwrt and linux server and for vlan 2001 and getting result - download
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 34.0 MBytes 285 Mbits/sec
[ 5] 1.00-2.00 sec 28.0 MBytes 235 Mbits/sec
[ 5] 2.00-3.00 sec 38.4 MBytes 322 Mbits/sec
[ 5] 3.00-4.00 sec 37.0 MBytes 310 Mbits/sec
[ 5] 4.00-5.00 sec 38.8 MBytes 325 Mbits/sec
[ 5] 5.00-6.00 sec 34.8 MBytes 292 Mbits/sec
[ 5] 6.00-7.00 sec 35.8 MBytes 300 Mbits/sec
[ 5] 7.00-8.00 sec 36.4 MBytes 305 Mbits/sec
[ 5] 8.00-9.00 sec 35.9 MBytes 301 Mbits/sec
[ 5] 9.00-10.00 sec 32.6 MBytes 273 Mbits/sec

-upload
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 2.25 MBytes 18.9 Mbits/sec 366 2.83 KBytes
[ 5] 1.00-2.00 sec 896 KBytes 7.34 Mbits/sec 73 21.2 KBytes
[ 5] 2.00-3.00 sec 640 KBytes 5.24 Mbits/sec 77 2.83 KBytes
[ 5] 3.00-4.00 sec 1.25 MBytes 10.5 Mbits/sec 163 7.07 KBytes
[ 5] 4.00-5.00 sec 1.00 MBytes 8.39 Mbits/sec 142 9.90 KBytes
[ 5] 5.00-6.00 sec 1.25 MBytes 10.5 Mbits/sec 174 2.83 KBytes
[ 5] 6.00-7.00 sec 2.12 MBytes 17.8 Mbits/sec 317 8.48 KBytes
[ 5] 7.00-8.00 sec 896 KBytes 7.34 Mbits/sec 105 9.90 KBytes
[ 5] 8.00-9.00 sec 1.00 MBytes 8.39 Mbits/sec 94 4.24 KBytes
[ 5] 9.00-10.00 sec 1.25 MBytes 10.5 Mbits/sec 98 8.48 KBytes

And i'm test internet with tagged vlan - same result
download 280mbit
upload - max 30mbit..

And i'm test speed over WIFI - same result.

This mean that this only related to VLAN speed and problem only for TX trafic

network.loopback=interface
network.loopback.device='lo'
network.loopback.proto='static'
network.loopback.ipaddr='127.0.0.1'
network.loopback.netmask='255.0.0.0'
network.globals=globals
network.globals.ula_prefix='fd36:e5c5:71a2::/48'
network.globals.packet_steering='1'
network.@device[0]=device
network.@device[0].name='br-lan'
network.@device[0].type='bridge'
network.@device[0].ports='lan1' 'lan2' 'lan3' 'lan4'
network.@device[0].ipv6='0'
network.@device[0].stp='1'
network.mamange2001=interface
network.mamange2001.proto='static'
network.mamange2001.device='br-lan.2001'
network.mamange2001.ipaddr='172.28.217.251'
network.mamange2001.netmask='255.255.255.0'
network.mamange2001.gateway='172.28.217.1'
network.mamange2001.defaultroute='0'
network.@bridge-vlan[0]=bridge-vlan
network.@bridge-vlan[0].device='br-lan'
network.@bridge-vlan[0].vlan='2'
network.@bridge-vlan[0].ports='lan1:t' 'lan4'
network.@bridge-vlan[1]=bridge-vlan
network.@bridge-vlan[1].device='br-lan'
network.@bridge-vlan[1].vlan='2001'
network.@bridge-vlan[1].ports='lan1:t'
network.@bridge-vlan[2]=bridge-vlan
network.@bridge-vlan[2].device='br-lan'
network.@bridge-vlan[2].vlan='3'
network.@bridge-vlan[2].ports='lan2' 'lan3'
network.@route[0]=route
network.@route[0].interface='mamange2001'
network.@route[0].target='10.20.0.0/16'
network.@route[0].gateway='172.28.217.1'
network.@bridge-vlan[3]=bridge-vlan
network.@bridge-vlan[3].device='br-lan'
network.@bridge-vlan[3].vlan='3888'
network.@bridge-vlan[3].ports='lan1:t'
network.test3888=interface
network.test3888.proto='dhcp'
network.test3888.device='br-lan.3888'
network.test3888.defaultroute='0'
network.test3888.peerdns='0'
network.@bridge-vlan[4]=bridge-vlan
network.@bridge-vlan[4].device='br-lan'
network.@bridge-vlan[4].vlan='888'
network.@bridge-vlan[4].ports='lan1:t'
network.wan_internet=interface
network.wan_internet.proto='static'
network.wan_internet.device='br-lan.888'
network.wan_internet.ipaddr='*********'
network.wan_internet.netmask='255.255.255.0'
network.wan_internet.gateway='*********'
network.wan_internet.dns='8.8.8.8'
network.LAN=interface
network.LAN.proto='static'
network.LAN.device='br-lan.3'
network.LAN.ipaddr='192.168.1.1'
network.LAN.netmask='255.255.255.0'
network.LAN.defaultroute='0'
network.@device[1]=device
network.@device[1].name='br-lan.888'
network.@device[1].type='8021q'
network.@device[1].ifname='br-lan'
network.@device[1].vid='888'
network.@device[1].ipv6='0'
network.@route[1]=route
network.@route[1].interface='mamange2001'
network.@route[1].target='172.28.212.0/24'
network.@route[1].gateway='172.28.217.1'

CPU load seen in htop via SSH ?

htop -

Ups.. probelm in switch - qos enabled on this port :smiley:

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