Hello,
I have followed the guide and instruction listed here to flash to Mi 4A Router Gugabit Edition with OpenWRT Firmware -> [OpenWrt Wiki] Xiaomi Mi Router 4A Gigabit Edition
This router has has 2 LAN Ports. But I am only able to use 1 (the first one). When connecting to the other port, LAN isn't working.
My OpenWRT Details,
My Interface Details,
Can anyone help me configure it properly as how to get that second LAN Port working?
Thanks.
Please copy the output of the following commands and post it here using the "Preformatted text </> " button:
Remember to redact passwords, MAC addresses and any public IP addresses you may have:
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
Hello,
Thank you for the quick reply,
Here are the output as requested,
cat /etc/config/network
root@OpenWrt:~# cat /etc/config/network
config interface 'loopback'
option device 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option packet_steering '1'
option ula_prefix 'fdcd:c910:0b59::/48'
config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
config interface 'wan'
option device 'wan'
option proto 'pppoe'
option username 'yyyyyyyyy'
option password 'xxxxxx'
option ipv6 'auto'
option peerdns '0'
list dns '94.140.14.14'
list dns '94.140.15.15'
config interface 'wan6'
option device 'wan'
option proto 'dhcpv6'
config device
option name 'wan'
option macaddr 'xxxxxx'
cat /etc/config/wireless
I have the Wireless disabled here in this router since I use different access point.
root@OpenWrt:~# cat /etc/config/wireless
config wifi-device 'radio0'
option type 'mac80211'
option path '1e140000.pcie/pci0000:00/0000:00:01.0/0000:02:00.0'
option band '2g'
option htmode 'HT20'
option channel 'auto'
option cell_density '0'
option disabled '1'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt'
option encryption 'psk-mixed'
option key 'xxxxx'
option disabled '1'
config wifi-device 'radio1'
option type 'mac80211'
option path '1e140000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
option band '5g'
option htmode 'VHT80'
option channel 'auto'
option cell_density '0'
option disabled '1'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt_5G'
option encryption 'psk-mixed'
option key 'xxxxx'
option disabled '1'
cat /etc/config/dhcp
root@OpenWrt:~# cat /etc/config/dhcp
config dnsmasq
option domainneeded '1'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option domain 'lan'
option expandhosts '1'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
option localservice '1'
option ednspacket_max '1232'
config dhcp 'lan'
option interface 'lan'
option leasetime '12h'
option dhcpv4 'server'
option dhcpv6 'server'
option ra 'server'
list ra_flags 'managed-config'
list ra_flags 'other-config'
option start '151'
option limit '45'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'
option loglevel '4'
config host
option name 'Tenda-AP'
option dns '1'
option mac 'xxxxxx'
option ip '192.168.1.10'
config host
option name 'HP-AIO'
option dns '1'
option mac 'xxxxxx'
option ip '192.168.1.150'
config host
option name 'VM-Win11-AVS'
option dns '1'
option mac 'xxxxx'
option ip '192.168.1.40'
config host
option name 'U22-Ubuntu'
option dns '1'
option mac 'xxxxx'
option ip '192.168.1.30'
config host
option name 'TL-SG108E'
option dns '1'
option mac 'xxxxx'
option ip '192.168.1.5'
config host
option name 'S1'
option dns '1'
option mac 'xxxxx'
option ip '192.168.1.25'
cat /etc/config/firewall
root@OpenWrt:~# cat /etc/config/firewall
config defaults
option syn_flood 1
option input ACCEPT
option output ACCEPT
option forward REJECT
# Uncomment this line to disable ipv6 rules
# option disable_ipv6 1
config zone
option name lan
list network 'lan'
option input ACCEPT
option output ACCEPT
option forward ACCEPT
config zone
option name wan
list network 'wan'
list network 'wan6'
option input REJECT
option output ACCEPT
option forward REJECT
option masq 1
option mtu_fix 1
config forwarding
option src lan
option dest wan
# We need to accept udp packets on port 68,
# see https://dev.openwrt.org/ticket/4108
config rule
option name Allow-DHCP-Renew
option src wan
option proto udp
option dest_port 68
option target ACCEPT
option family ipv4
# Allow IPv4 ping
config rule
option name Allow-Ping
option src wan
option proto icmp
option icmp_type echo-request
option family ipv4
option target ACCEPT
config rule
option name Allow-IGMP
option src wan
option proto igmp
option family ipv4
option target ACCEPT
# Allow DHCPv6 replies
# see https://github.com/openwrt/openwrt/issues/5066
config rule
option name Allow-DHCPv6
option src wan
option proto udp
option dest_port 546
option family ipv6
option target ACCEPT
config rule
option name Allow-MLD
option src wan
option proto icmp
option src_ip fe80::/10
list icmp_type '130/0'
list icmp_type '131/0'
list icmp_type '132/0'
list icmp_type '143/0'
option family ipv6
option target ACCEPT
# Allow essential incoming IPv6 ICMP traffic
config rule
option name Allow-ICMPv6-Input
option src wan
option proto icmp
list icmp_type echo-request
list icmp_type echo-reply
list icmp_type destination-unreachable
list icmp_type packet-too-big
list icmp_type time-exceeded
list icmp_type bad-header
list icmp_type unknown-header-type
list icmp_type router-solicitation
list icmp_type neighbour-solicitation
list icmp_type router-advertisement
list icmp_type neighbour-advertisement
option limit 1000/sec
option family ipv6
option target ACCEPT
# Allow essential forwarded IPv6 ICMP traffic
config rule
option name Allow-ICMPv6-Forward
option src wan
option dest *
option proto icmp
list icmp_type echo-request
list icmp_type echo-reply
list icmp_type destination-unreachable
list icmp_type packet-too-big
list icmp_type time-exceeded
list icmp_type bad-header
list icmp_type unknown-header-type
option limit 1000/sec
option family ipv6
option target ACCEPT
config rule
option name Allow-IPSec-ESP
option src wan
option dest lan
option proto esp
option target ACCEPT
config rule
option name Allow-ISAKMP
option src wan
option dest lan
option dest_port 500
option proto udp
option target ACCEPT
### EXAMPLE CONFIG SECTIONS
# do not allow a specific ip to access wan
#config rule
# option src lan
# option src_ip 192.168.45.2
# option dest wan
# option proto tcp
# option target REJECT
# block a specific mac on wan
#config rule
# option dest wan
# option src_mac 00:11:22:33:44:66
# option target REJECT
# block incoming ICMP traffic on a zone
#config rule
# option src lan
# option proto ICMP
# option target DROP
# port redirect port coming in on wan to lan
#config redirect
# option src wan
# option src_dport 80
# option dest lan
# option dest_ip 192.168.16.235
# option dest_port 80
# option proto tcp
# port redirect of remapped ssh port (22001) on wan
#config redirect
# option src wan
# option src_dport 22001
# option dest lan
# option dest_port 22
# option proto tcp
### FULL CONFIG SECTIONS
#config rule
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 80
# option dest wan
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
# option target REJECT
#config redirect
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 1024
# option src_dport 80
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
Kindly check and assist!!
Thanks.
I don't see any reason that you'd have issues with the 2nd lan port. Does it indicate a physical link when you attempt a connection? You may need to check the cable(s) and also the physical port itself for debris or bent pins, etc.. It is also possible there is physical damage to the circuitry.
Hello,
Thanks for your reply.
It is working with Stock Firmware but under OpenWRT there is no Link from this LAN Port 2
Same cable is working fine with LAN Port 1 but won't work with LAN Port 2. I have changed cables but can't get any link on LAN Port 2.
I am not an expert on this, but I wonder if Switching configuration is done alright in my configuration. Talking about Configuration, I didn't have to do anything since everything else is working fine out of the box from on this OpenWRT given firmware except this LAN Port 2.
I am feeling clueless as what is wrong or what should I do 
Thanks.
P.S.
Can you please help me on how to reset this router to OpenWRT default (like factory reset)?
The Reset page says,
To reset the firmware to its initial state, click "Perform reset" (only possible with squashfs images).
Do I have that mentioned image? I mean, I flashed the image available here -> [OpenWrt Wiki] Xiaomi Mi Router 4A Gigabit Edition
Is it ok to do reset from this page, with that mentioned image?
Thanks.
My 4AG router, both 2 LAN port working ok, maybe your router hardware has a problem.
Could you back to Xiaomi stock fw, to confirm the hardware?
Yes, you can follow the instructions for the reset... the TL;DR is this:
firstboot -y && reboot now
This will reset to defaults. wifi will be disabled, and you'll need to connect via ethernet.
Hello,
Thank you for your replies.
Stock Firmware was OK on both ports.
I have done the reset, the 2nd Port is now working.
However my Switch TP-Link Tl-SG108E (Managed 8Port Gigabit Switch) is acting up. Hot swap between both ports of Mi 4A Router isn't working. I don't have any Link aggregation or VLAN type things enabled on this switch. It is acting as a dumb switch but still, removing the cable from Mi 4A LAN Port 1 to LAN Port 2 wont bring any link to the switch.
But primary issue is solved, I have got the Mi 4A router with OpenWRT now working on both LAN Ports.
Thank you guys for your help and suggestions.
This certainly sounds like an issue with that switch and not your Mi 4A with OpenWrt. The way to verify that the Mi 4A is working properly is to use another ethernet device to see if a link is established on each of the LAN ports (and it sounds like you may have already done that). If the result of the test shows that the 4A is okay, you will want to replace that switch.
If your problem is solved, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.
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