Re: Bonded NIC's did not come up at boot?
On Mon, 22 Nov 2010 18:20:30 -0600, Stan Hoeppner wrote:
> vr put forth on 11/22/2010 5:32 PM:
>
>> mii-tool is showing:
>> eth0: negotiated 1000baseT-HD flow-control, link ok
>> eth1: negotiated 1000baseT-HD flow-control, link ok
>>
>> but "mii-tool bond0" shows:
>> bond0 10 Mbit, half duplex, link ok
>>
>> My switchport says the port is currently at 1000... How can I get that
>> bonded link to return the right speed at the host?
>
> Switch *port* or *port[s]*. Your original email said you're linking to
> two separate switches, one attached to each NIC.
>
> Which bonding mode are you using (0-6)? If you are using mode 4 this
> won't work with two switches. 802.3ad requires both bonded ports be on
> the same switch, and the switch must be manually programmed for this.
>
> Configuring mode 4 on your Linux host with each cable going to a
> different switch may very likely cause the bogus mii-tool output for the
> bonded link.
>
> Give us _all_ of the technical details of how you _want_ this setup and
> how you currently have it setup so that we may better help you.
>
> --
> Stan
I've configured "bond_mode active-backup" which I understand to be mode
1.
Physically, NIC-1 is cabled to switch-1. NIC-2 is cabled to switch-2.
The goal is for this Linux host to survive a switch, switch-port, or
NIC failure.
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