nixCraft

Dear All.

I have configured Bonding on RHEL 4.0, it is working fine my problem is that before bonding my eth0 speed was 1000GB but after doing bonding my eth0 speed is 100MB so how do I change my eth0 speed.

If I give command mii-tool I get the output like this.

eth0: negotiated 100baseTx-FD, link ok
eth1: negotiated 100baseTx-FD, link ok

But if I give the command ethtool eth0 I get the output
[root@~]# 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: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: d
Current message level: 0x00000007 (7)
Link detected: yes

[i]Which one is correct and how do I change the speed.

Pls help[/i]Regards.
Puppen

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.

Command to setup 1000baseT/Full for eth0:
Command to setup 1000baseT/Full for bond0:
Depending on which type of Ethernet card is installed on the system you need to use either mii-tool or ethtool. See more usage at http://www.cyberciti.biz/faqs/2006/0...x-settings.php

Dear Monk.

it does not work with mii-tool.

If i give mii-tool --force=1000baseTx-FD it does not take
???


regards.
Puppen

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.

Ok,

Which bond mode you are using? Also specify make of your NIC

Dear Monk.

Thanks for your reply.

The problem is not with NIC.
My problem is that before doing bonding, NIC was on 1Gb it was shown in both the commands mii-tool as well as on ethtool.

But after bonding it shows me on 100mb when I give mii-tool, but in
ethtoo it shows me 1gb.

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.

Dear Monk.

I am using
bond0 mode=balance-alb mii-mon=100

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.

I don’t think so you have any problem. See some Ethernet (NIC) card only works with either mii-tool or ethtool. In this case mii-tool is not compatible with your network card.

One of my server only support ethertool and other only support mii-tool. So depending on which type of Ethernet card is installed on the system you need to use any one of the command.

Other way to verify speed:

After server reboot type command at shell prompt
OR use wget command to download file from bond0 interface which will tell you speed. This is method needs configuration of web server.
Goto other linux desktop which connected to same switch
Hope this helps

Dear Monk.

This is the output of grep command.

e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: Warning: failed to get speed/duplex from eth0, speed forced to 100Mbps, duplex forced to Full.
bonding: Warning: failed to get speed/duplex from eth1, speed forced to 100Mbps, duplex forced to Full.
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: Warning: failed to get speed/duplex from eth0, speed forced to 100Mbps, duplex forced to Full.
bonding: Warning: failed to get speed/duplex from eth1, speed forced to 100Mbps, duplex forced to Full.
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: Warning: failed to get speed/duplex from eth0, speed forced to 100Mbps, duplex forced to Full.
bonding: Warning: failed to get speed/duplex from eth1, speed forced to 100Mbps, duplex forced to Full.
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: Warning: failed to get speed/duplex from eth0, speed forced to 100Mbps, duplex forced to Full.
bonding: Warning: failed to get speed/duplex from eth1, speed forced to 100Mbps, duplex forced to Full.
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: Warning: failed to get speed/duplex from eth0, speed forced to 100Mbps, duplex forced to Full.
bonding: Warning: failed to get speed/duplex from eth1, speed forced to 100Mbps, duplex forced to Full.
e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex


Ok now tell me what is the spped of my bonding

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.

As long as your switch is managed and understands trunking you can use this technique to achieve higher speed.

So do you have managed switch?

__________________
Rocky Jr.
You may have my body & soul, but you will never touch my pride!

If you have knowledge, let others light their candles at it.

Certified to work on HP-UX / Sun Solaris / RedHat

Dear Rocky.

I have 3Com layer 3 managed switch

__________________
someone somewhere is made for you.
LOVE is Journey not a destination.
ALL I want is EVERYTHING.