Managing Serviceguard Eighteenth Edition, September 2010

information about this model, see the HP-UX IPSec Version A.03.00 Administrator's
Guide which you can find on www.docs.hp.com/en/internet.html..
ip_strong_es_model is disabled (set to 0) by default. Setting it to 1 enables it.
CAUTION: HP supports enabling this parameter only if you are not using a
cross-subnet configuration (page 41). Otherwise, leave the parameter at its default
setting (zero, meaning disabled).
Enabling this parameter allows you to configure a default gateway for each physical
IPv4 interface. These gateways allow a system to send an unbound packet through
the interface for the address to which the socket (or communication endpoint) is
bound. If the socket (or communication endpoint) is not bound to a specific address,
the system sends the packet through the interface on which the unbound packet
was received.
This means that the packet source addresses (and therefore the interfaces on a
multihomed host) affect the selection of a gateway for outbound packets once
ip_strong_es_model is enabled. For more information see “Using a Relocatable
Address as the Source Address for an Application that is Bound to INADDR_ANY”
(page 435).
Creating Mirrors of Root Logical Volumes
HP strongly recommends that you use mirrored root volumes on all cluster nodes.
The following procedure assumes that you are using separate boot and root volumes;
you create a mirror of the boot volume (/dev/vg00/lvol1), primary swap (/dev/
vg00/lvol2), and root volume (/dev/vg00/lvol3). In this example and in the
following commands, /dev/dsk/c4t5d0 is the primary disk and /dev/dsk/c4t6d0
is the mirror; be sure to use the correct device file names for the root disks on your
system.
IMPORTANT: This must be done, as described below, whether or not you intend to
use cmpreparestg (1m) to configure storage. See “Using Easy Deployment
Commands to Configure the Cluster” (page 211) for more information about
cmpreparestg.
NOTE: Under agile addressing, the physical devices in these examples would have
names such as /dev/[r]disk/disk1, and /dev/[r]disk/disk2. See “About
Device File Names (Device Special Files)” (page 106).
1. Create a bootable LVM disk to be used for the mirror.
pvcreate -B /dev/rdsk/c4t6d0
224 Building an HA Cluster Configuration