No subject
Wed Jun 18 07:36:42 PDT 2008
...
eth0: (PCI Express:2.5GB/s:Width x1) 00:0f:fe:4a:68:37
eth0: Intel(R) PRO/1000 Network Connection
eth0: MAC: 4, PHY: 6, PBA No: 1002ff-0ff
When plugged into a 10/100/1000 porting, forcing:
ethtool -s eth0 autoneg off speed 1000 duplex full
results in erratic (some pings work) or dead operation (no pings work).
Using:
ethtool -s eth0 autoneg off speed 100 duplex full
seems to work OK.
Returning it to autoneg results in erratic/dead operation:
[root at lyra ~]# ethtool -s eth0 autoneg on
[root at lyra ~]# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbag
Wake-on: g
Current message level: 0x00000001 (1)
Link detected: yes
[root at lyra ~]# ping server2
PING server2.domain.avtechpulse.com (192.168.0.3) 56(84) bytes of data.
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=1 ttl=64
time=0.079 ms
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=2 ttl=64
time=0.158 ms
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=7 ttl=64
time=0.161 ms
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=11 ttl=64
time=0.113 ms
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=12 ttl=64
time=0.131 ms
64 bytes from server2.domain.avtechpulse.com (192.168.0.3): icmp_seq=17 ttl=64
time=0.127 ms
^C
--- server2.domain.avtechpulse.com ping statistics ---
18 packets transmitted, 6 received, 66% packet loss, time 17553ms
rtt min/avg/max/mdev = 0.079/0.128/0.161/0.028 ms
[root at lyra ~]#
This was confirmed with multiple 10/100/1000 switches from different
manufacturers.
[root at lyra ~]# more /etc/modprobe.conf
alias eth0 e1000e #same behaviour with "e1000"
alias scsi_hostadapter libata
alias scsi_hostadapter1 ata_piix
alias snd-card-0 snd-hda-intel
options snd-card-0 index=0
options snd-hda-intel index=0
Need any additional data?
- Mike
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