Lan1 doesn't come up after reboot

Installing and Using OpenWrt
1

New to OpenWRT, but the port did start up under dd-wrt. The other ports in use (lan2 and lan3) start fine. I get the following after unplugging and plugging the cable into the router, but it doesn't work at the PC end.

root@WRT1900ACSv2:~# logread | grep lan1 -w
Sat Jul  2 22:35:57 2022 kern.info kernel: [ 5932.864052] mv88e6085 f1072004.mdio-mii:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
Sat Jul  2 22:35:57 2022 kern.info kernel: [ 5932.872663] br-lan: port 1(lan1) entered blocking state
Sat Jul  2 22:35:57 2022 kern.info kernel: [ 5932.877917] br-lan: port 1(lan1) entered forwarding state
Sat Jul  2 22:35:57 2022 daemon.notice netifd: Network device 'lan1' link is up
Sat Jul  2 22:35:59 2022 daemon.notice netifd: Network device 'lan1' link is down
Sat Jul  2 22:35:59 2022 kern.info kernel: [ 5935.176295] mv88e6085 f1072004.mdio-mii:00 lan1: Link is Down
Sat Jul  2 22:35:59 2022 kern.info kernel: [ 5935.182172] br-lan: port 1(lan1) entered disabled state
Sat Jul  2 22:36:02 2022 kern.info kernel: [ 5938.141912] mv88e6085 f1072004.mdio-mii:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
Sat Jul  2 22:36:02 2022 kern.info kernel: [ 5938.150504] br-lan: port 1(lan1) entered blocking state
Sat Jul  2 22:36:02 2022 kern.info kernel: [ 5938.155767] br-lan: port 1(lan1) entered forwarding state
Sat Jul  2 22:36:02 2022 daemon.notice netifd: Network device 'lan1' link is up

OpenWrt 21.02.3, r16554-1d4dea6d4f on WRT1900ACSv2. Not much changed from defaults.

root@WRT1900ACSv2:~# ubus call system board; \
port network; uci export> uci export network; uci export dhcp; uci export firewall; \
> head -n -0 /etc/firewall.user; \
> ip -4 addr ; ip -4 ro li tab all ; ip -4 ru;
{
        "kernel": "5.4.188",
        "hostname": "WRT1900ACSv2",
        "system": "ARMv7 Processor rev 1 (v7l)",
        "model": "Linksys WRT1900ACS",
        "board_name": "linksys,wrt1900acs",
        "release": {
                "distribution": "OpenWrt",
                "version": "21.02.3",
                "revision": "r16554-1d4dea6d4f",
                "target": "mvebu/cortexa9",
                "description": "OpenWrt 21.02.3 r16554-1d4dea6d4f"
        }
}
package 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 ula_prefix 'fd64:4364:9f80::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

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 device
        option name 'wan'
        option macaddr 'xxxxxxx'

config interface 'wan'
        option device 'wan'
        option proto 'dhcp'
        option peerdns '0'
        list dns '1.0.0.2'
        list dns '1.1.1.2'

config interface 'wan6'
        option device 'wan'
        option proto 'dhcpv6'

package 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 localservice '1'
        option ednspacket_max '1232'

config dhcp 'lan'
        option interface 'lan'
        option dhcpv4 'server'
        option dhcpv6 'server'
        option ra 'server'
        list ra_flags 'managed-config'
        list ra_flags 'other-config'
        option start '201'
        option limit '3'
        option leasetime '24h'
        list dhcp_option '43,01:04:00:00:00:02'

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'

package firewall

config defaults
        option syn_flood '1'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'

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'

config rule
        option name 'Allow-DHCP-Renew'
        option src 'wan'
        option proto 'udp'
        option dest_port '68'
        option target 'ACCEPT'
        option family 'ipv4'

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'

config rule
        option name 'Allow-DHCPv6'
        option src 'wan'
        option proto 'udp'
        option src_ip 'fc00::/6'
        option dest_ip 'fc00::/6'
        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'

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'

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'

config rule
        option name 'Support-UDP-Traceroute'
        option src 'wan'
        option dest_port '33434:33689'
        option proto 'udp'
        option family 'ipv4'
        option target 'REJECT'
        option enabled 'false'

config include
        option path '/etc/firewall.user'

# This file is interpreted as shell script.
# Put your custom iptables rules here, they will
# be executed with each firewall (re-)start.

# Internal uci firewall chains are flushed and recreated on reload, so
# put custom rules into the root chains e.g. INPUT or FORWARD or into the
# special user chains, e.g. input_wan_rule or postrouting_lan_rule.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
7: wan@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
    inet 47.147.141.80/24 brd 47.147.141.255 scope global wan
       valid_lft forever preferred_lft forever
10: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
    inet 192.168.1.1/24 brd 192.168.1.255 scope global br-lan
       valid_lft forever preferred_lft forever
default via 47.147.141.1 dev wan  src 47.147.141.80
47.147.141.0/24 dev wan scope link  src 47.147.141.80
192.168.1.0/24 dev br-lan scope link  src 192.168.1.1
broadcast 47.147.141.0 dev wan table local scope link  src 47.147.141.80
local 47.147.141.80 dev wan table local scope host  src 47.147.141.80
broadcast 47.147.141.255 dev wan table local scope link  src 47.147.141.80
broadcast 127.0.0.0 dev lo table local scope link  src 127.0.0.1
local 127.0.0.0/8 dev lo table local scope host  src 127.0.0.1
local 127.0.0.1 dev lo table local scope host  src 127.0.0.1
broadcast 127.255.255.255 dev lo table local scope link  src 127.0.0.1
broadcast 192.168.1.0 dev br-lan table local scope link  src 192.168.1.1
local 192.168.1.1 dev br-lan table local scope host  src 192.168.1.1
broadcast 192.168.1.255 dev br-lan table local scope link  src 192.168.1.1
0:      from all lookup local
32766:  from all lookup main
32767:  from all lookup default
root@WRT1900ACSv2:~#
2

Few things to try;

  1. check the log of the client machine and try connecting another client instead.

  2. return to stock and see if the port is live. Did you install openwrt from stock or ddwrt?

  3. check your cabling, could be a marginal Ethernet cable

  4. check the dmesg for any errors bringing up the eth module