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Full Discussion: AIX and port trunking / high availability
Operating Systems AIX AIX and port trunking / high availability Post 302169987 by art on Saturday 23rd of February 2008 11:33:56 AM
Old 02-23-2008
Yes I know, We've been using Etherchannel 802.3ad(LACP) for a while but I don't like it. Or at least not how the switches handle a switch failure. To explain, we have a switch stack of 4 switches and some of the more important AIX hosts use etherchannel(802.3ad) Short time ago we lost 2 switches out of 4 from the stack because of power interruption. The remaining switches automaticly put all etherchannel port in admin down state and the back up to normal. The result was that we lost all connection to those host that were using etherchannel for about 5-10 sec. But the point of having these hosts on etherchannel was to make sure we always had a connection.
So now I'm looking for alternitive methods for high availability.
On linux there is a bonding mode called "Broadcast"(mode 3) which I think would solve my issue but from what I've read in the link you gave me I don't see that AIX has that feature.

What are people using for high availability network connections ?
 

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LEARN ABOUT HPUX

cm

cm(5)								File Formats Manual							     cm(5)

NAME

       cm - cluster monitor for high availability clusters

   Remarks
       Cluster	operations require the installation of the optional Serviceguard or Serviceguard Extension for RAC software, which is not included
       in the standard HP-UX operating system.

DESCRIPTION

       Serviceguard and Serviceguard Extension for RAC are high availability products which provide an environment such that after a failure of  a
       node,  services	(applications)	can be up and running again on another node within a very short amount of time.  In addition, Serviceguard
       Extension for RAC is the enabling software for the Real Application Clusters (RAC).  Working with the basic Serviceguard product,  Service-
       guard Extension for Faster Failover allows configuration of clusters for optimized failover.

   Commands
       The following set of commands is used to configure a high availability cluster:

		     cmquerycl(1M)
		     cmmakepkg(1M)
		     cmcheckconf(1M)
		     cmapplyconf(1M)

       The following commands are used to run or halt a cluster:

		     cmruncl(1M)
		     cmhaltcl(1M)
		     cmrunnode(1M)
		     cmhaltnode(1M)
		     cmviewcl(1M)

       Once a cluster is formed, the following commands are provided for manual operation on high availability packages:

		     cmrunpkg(1M)
		     cmhaltpkg(1M)
		     cmmodpkg(1M)

       The following commands are used within a package control script to control the services and networks configured for a package:

		     cmrunserv(1M)
		     cmhaltserv(1M)
		     cmmodnet(1M)

       A command is provided to aid in migrating from a SwitchOver/UX configuration to a Serviceguard cluster:

		     cmmigrate(1M)

       This command is not applicable with Serviceguard Extension for RAC.

SEE ALSO

       Managing Serviceguard.
       Configuring RAC Clusters with Serviceguard Extension for RAC.

						      Requires Optional Serviceguard Software						     cm(5)
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