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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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cmhaltserv(1m)															    cmhaltserv(1m)

NAME
cmhaltserv - halt a service from the high availability package halt script SYNOPSIS
cmhaltserv [-v] service_name DESCRIPTION
cmhaltserv is used only in the high availability package halt script to halt a service. To stop a package service, the running package halt script must be running as superuser(UID=0), or as a user with access policy of FULL_ADMIN allowed in the cluster configuration file. See access policy in cmquerycl(1) or cmmakepkg(1). If any part of a package is marked down, the package halt script is executed as part of the recovery process. This command sends a SIGTERM signal to the PID and the corresponding process group of the monitored service. If this signal is caught by the running application, it is up to the application to ensure that the processes will be terminated. Options cmhaltserv supports the following options: -v Verbose output will be displayed. RETURN VALUE
cmhaltserv returns the following values: 0 Successful completion. 1 Command failed. EXAMPLES
To halt the service db1, do the following: # Halt the service db1 cmhaltserv db1 This line should only be executed within a package halt script. AUTHOR
cmhaltserv was developed by HP. SEE ALSO
cmmakepkg(1m), cmquerycl(1m), cmmodnet(1m), cmrunserv(1m). Requires Optional Serviceguard Software cmhaltserv(1m)
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