OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Critical
  • Priority Very Low
  • Reported Version openwrt-21.02
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by darkblaze69 - 13.07.2021

FS#3932 - [21.02] Autonegotiation speed fails with my provider's cable

Supply the following if possible:
- Device problem occurs on: xiaomi mir3g
- 21.02 rc3
- My provider uses pppoe, cable is 4-wire 100baseT and my router is 1000baseT xiaomi mir3g

 

openwrt 21.02 fails to establish pppoe link because of failing to autonegotiate (Speed: Unknown!, Link detected: no, etc):

# ethtool wan
Settings for wan:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Speed: Unknown!
	Duplex: Unknown! (255)
	Port: MII
	PHYAD: 1
	Transceiver: external
	Auto-negotiation: on
	Supports Wake-on: d
	Wake-on: d
	Link detected: no

When I set autonegotiation to off and forced to 100baseT/Full, pppoe worked like a charm.

/usr/sbin/ethtool -s wan speed 100 duplex full autoneg off
# ethtool wan
Settings for wan:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  100baseT/Full 
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: No
	Advertised FEC modes: Not reported
	Speed: 100Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 1
	Transceiver: external
	Auto-negotiation: off
	Supports Wake-on: d
	Wake-on: d
	Link detected: yes
Victor commented on 13.07.2021 21:53

I observe the same issue on Xiaomi Mi Router 4A Gigabit edition (https://openwrt.org/inbox/toh/xiaomi/xiaomi_mi_router_4a_gigabit_edition). Configuring the port mode using ethtool helped me.

alex-borkun commented on 15.01.2022 10:35

I experience the same issue on Xiaomi Redmi AC2100.
OpenWrt: 21.02.1, r16325-88151b8303
Workaround from here helped:

ethtool -s wan speed 100 duplex full autoneg on

Please fix.

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