bonding - failed to get speed of NIC ?

[SIG - Pédagogie]

William Reich a écrit :
> I have a system setup with IP bonding.
> The NIC cards are 1gig,
> but sometimes, not always, I get this error ( below )
> which makes the NICs into 100Mbps.
> ( observed on the RH 4 Update 4 system. )
> 
> Anybody know why ?
> 
> wr
> 
> ++++++++
> 
> 
> Aug 25 14:05:55 jazz kernel: bonding: Warning: failed to get
> speed/duplex from eth3, speed forced to 100Mbps, duplex forced to Full.
> Aug 25 14:05:55 jazz kernel: bonding: bond0: making interface eth3 the
> new active one.
> Aug 25 14:05:55 jazz kernel: bonding: bond0: enslaving eth3 as an active
> interface with an up link.
> ...
> Aug 25 14:05:55 jazz ifup: Enslaving eth4 to bond0
> Aug 25 14:05:55 jazz kernel: bonding: Warning: failed to get
> speed/duplex from eth4, speed forced to 100Mbps, duplex forced to Full.
> Aug 25 14:05:55 jazz kernel: bonding: bond0: enslaving eth4 as a backup
> interface with an up link.

On my server, the link speed cannot be detected at first but is set to 
1000Mbps just after :

eth0: Broadcom NetXtreme II BCM5708 1000Base-SX (B2) PCI-X 64-bit 133MHz 
found at mem dc000000, IRQ 169, node addr 001e4f32f79e
eth1: Broadcom NetXtreme II BCM5708 1000Base-SX (B2) PCI-X 64-bit 133MHz 
found at mem da000000, IRQ 185, node addr 001e4f32f7a0

bonding: bond0: Warning: failed to get speed and duplex from eth0, 
assumed to be 100Mb/sec and Full.
bonding: bond0: enslaving eth0 as a backup interface with an up link.
ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
bnx2: eth0 NIC SerDes Link is Up, 1000 Mbps full duplex, receive & 
transmit flow control ON

bonding: bond0: Adding slave eth1.
bnx2: eth1: using MSI
bonding: bond0: Warning: failed to get speed and duplex from eth1, 
assumed to be 100Mb/sec and Full.
bonding: bond0: making interface eth0 the new active one.
bonding: bond0: enslaving eth1 as a backup interface with an up link.
bnx2: eth1 NIC SerDes Link is Up, 1000 Mbps full duplex, receive & 
transmit flow control ON


-- 
Nicolas Cuissard

Université PARIS 1 - Panthéon Sorbonne
SIG - Service Informatique de Gestion
Tel    : +33 (0)1 44 07 89 76
Fax    : +33 (0)1 44 07 86 10

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