bonding - failed to get speed of NIC ?

[William Reich]

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.