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Full Discussion: Can EtherChannel be a redundancy config?
Operating Systems AIX Can EtherChannel be a redundancy config? Post 302491870 by kah00na on Friday 28th of January 2011 02:08:43 PM
Old 01-28-2011
When you go into "smitty etherchannel", change/show, choose your etherchannel, look at the "Mode". You can have "standard" which means it only uses the secondary adapter when the first one loses it's connection. When this happens, you'll see something like "etherchannel failover" in the errpt. You'll see another error in the errpt when it goes back over to the primary adapters... something like "etherchannel restored" or "ether path restored"... I can't remember for sure, but you do see an event everytime it changes.

You can also set "Mode" to "round_robin" which means that it sends so many packets through one adapter and then so many packets through the other adapter and keeps switching back and forth. All this does is split your network traffic between the two adapters.

Both settings are good for redundancy. It just depends on how/if you want your data split between the two adapters.

I have personally physically removed adapters and plugged in other ones, always making sure at least one has a physical connection to the switch, and AIX handled it just fine. It recorded a bunch of errors in the errpt, but that was expected.a
 

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LEARN ABOUT NETBSD

trm

TRM(4)							   BSD Kernel Interfaces Manual 						    TRM(4)

NAME

     trm -- Tekram TRM-S1040 ASIC based PCI SCSI host adapter driver

SYNOPSIS

     trm* at pci? dev ? function ?
     scsibus* at trm?

DESCRIPTION

     The trm driver supports PCI SCSI host adapters based on the Tekram TRM-S1040 SCSI ASIC.

HARDWARE

     Supported SCSI controllers include:

	   Tekram DC-315 PCI Ultra SCSI adapter without flash BIOS and internal SCSI connector

	   Tekram DC-315U PCI Ultra SCSI adapter without flash BIOS

	   Tekram DC-395U PCI Ultra SCSI adapter with flash BIOS

	   Tekram DC-395UW PCI Ultra-Wide SCSI adapter with flash BIOS

	   Tekram DC-395F PCI Ultra-Wide SCSI adapter with flash BIOS and 68-pin external SCSI connector

     For Tekram DC-390 PCI SCSI host adapter, use pcscp(4) driver.

     For Tekram DC-310/U and DC-390U/UW/F PCI SCSI host adapters, use siop(4) driver.

SEE ALSO

     cd(4), ch(4), intro(4), pci(4), scsi(4), sd(4), ss(4), st(4), uk(4), scsipi(9)

     http://www.tekram.com/

AUTHORS

     The trm driver was originally written for NetBSD 1.4/i386 by Erich Chen of Tekram Technology, and Rui-Xiang Guo rewrote the driver to use
     bus_space(9) and bus_dma(9) for NetBSD 1.6.

BSD
								 November 6, 2001							       BSD
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