auto negotiation question
server is runnnig half duplex, here is the result. Does it mean switch set to auto negoation or network card set to auto negotiation? Please help me.
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
Advertised auto-negotiation: Yes
Port: Twisted Pair
Supports Wake-on: g
Link detected: yes
Here is the /etc/sysconfig/ethconf file, does it need to set to auto or full duplex?
# This file is read by /etc/init.d/ethconf shortly after the network
# is started. It is used to sets each NIC in the system according to
# the requirements of the network its on. The format of this file is
# as follows:
# <ifname> is eth0, eth1, etc.
# <speed> is 10, 100, or 1000, or auto
# <duplex> is half or full (or empty if auto is set)
# auto and 1000 are synonymous (the gigE standard requires auto-negotiation,
# and the interface and switchport will negotiate 1000 full-duplex)
# Here are some examples:
# If auto (or 1000) is not set, then the duplex must be specified or
# the script will continue without flagging an error.
Whether it needs 100:full or auto depends on your switch. How is the switch port configured?
Switch configured as full duplex
Port 1/26 100Full
Does it need to be auto or full ? Thanks in advance
There was a type it was configured as FULL, I just missed the L.
Then your card should be configured for 100/full to match the switch. Either both sides should be auto, or both sides forced to the same speed and duplex.
I have no idea why the ethconf file isn't working if you don't have a typo. You can use ethtool to force the speed/duplex manually.
Thanks a lot for helping me out. When we do ethtool eth0, does it grep the information form ethconf and display the mode, such as auto or full duplex?
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