On Thu, 22 Feb 2001, Dan B wrote: > However, what I really like is the powerful redundancy of FEC. One could > lose any of the 4 NIC's in a trunk and it wouldn't miss a beat. Heck, you > could lose three NIC's and keep pumping (at lower throughput). [I think that this becomes off-topic for the nfs and raid lists] I'm not so sure about this. I am using the bonding module since before it was included in the kernel (2.2.15, IIRC). At that time it didn't support any redundacy: if you have 2 NICs in the setup and you unplug one cable, the bonding module would not sense it and still try to pump packets on the dead link. Between 2.2.16 and 2.2.17 (IIRC), the bonding module was significantly improved and the redundancy capability was discussed. However, to get the info about a lost link, you have to read the MII registers of the NIC which is a costly operation (in terms of CPU cycles); normally, this is done once every 60 seconds, so the loss isn't noticable, but if you want to do it every second (to sense soon that the link went down), it becomes important... so it was left how it was. Sincerely, Bogdan Costescu IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868 E-mail: [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED]
