Package: base
Severity: serious
-- System Information:
Debian Release: 7.8
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
-- Problem Description:
A server machine with a Gigabit NIC is directly linked to a router supporting
Gigabit connetcions.
After a while or after an unexpected power failure on the router(or restart),
the Gigabit Connection on Gigabit NIC gets dumbed down to 100 Mb/s mode.
-- Workaround:
The only working solution discovered, is to retart the server
machine(restarting router does not solve the issue). After doing so,
the connection gets correctly negotiated to 1000 Mb/s mode.
-- Failed attempts:
Using "ethtool" and "mii-tool" to request/force renegotiation with varying
flags and parameters did not produce any positive effects.
Attempting to reset/restart networking results in no effect or "SSH hanging"
depending on the method used.
-- Technical Information:
{([ lshw ])}
*-network
description: Ethernet interface
product: AR8161 Gigabit Ethernet
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 10
serial: 90:2b:34:5e:19:5f
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list
ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx
duplex=full firmware=alx ip=192.168.23.44 latency=0 link=yes multicast=yes
port=twisted pair speed=100Mbit/s
resources: irq:43 memory:f7c00000-f7c3ffff ioport:e000(size=128)
{([ ethtool eth0 ])}
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pg
Wake-on: pg
Current message level: 0x00000000 (0)
Link detected: yes
{([ ethtool -i eth0 ])}
driver: alx
version:
firmware-version: alx
bus-info: 0000:02:00.0
supports-statistics: no
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no
{([ http://www.asus.com/Networking/RTN56U/ ])}
Product: Dual-Band Wireless-N600 Gigabit Router
Firmware version: 3.0.0.4.376.3754
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