08-09-2013
Hmm,
My perception was different, I was taking into account the actual failover of network from one VIOS to other VIOS.
Since you have only one VIO server, the dual redundancy of HEA is termed as SEA. Like when you allow the ethernet bridging, it is considering and naming it as SEA (as it is sharing the ports). unless you don't do SEA, you cannot share the network adapter with clients, so in simple language, we are creating SEA to share the network with client (allowing them to connect to outer world).
But, make sure before you do allow ethernet bridging, you do etherchanneling on the HEA.
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LEARN ABOUT DEBIAN
setether
SETETHER(8) System Manager's Manual SETETHER(8)
NAME
setether - Set the ethernet address for use with DECnet
SYNOPSIS
setether <if> [<if>...]|all [options]
DESCRIPTION
Set ethernet MAC address on ethernet adaptors
This script should be run at system startup. It will change the ethernet hardware (MAC) address of any or all ethernet interfaces to match
the DECnet node address. DECnet requires that the MAC address of all ethernet adaptors running the protocol be set approriately. If you do
not run setether then you must change the ethernet address in some other way for DECnet to work.
By default no ethernet interfaces will have their MAC addresses changed by setether, if you specify all then all interfaces name eth* will
be changed, otherwise a list of interface names can be specified. setether will enable (UP) all interfaces it changes the MAC addresses
of.
(2.4 only) The first interface specified on the command-line will also be made the default interface for DECnet operations (ie attempts to
contact nodes not in the neighbour table will be done over this interface).
This script must be run with the interface inactive, it is normally run from /etc/init.d/decnet before TCP/IP starts up.
EXAMPLES
set the MAC address of eth0.
# /sbin/setether eth0
set the MAC address of all ethernet interfaces
# /sbin/setether all
HELPFUL HINTS
If you have multiple ethernet cards on your system and they are connected to the the same network you should specify which one you want to
use for DECnet communication on the setether command line, otherwise they will both be given the same MAC address and this is probably not
what you want.
Running DECnet on multiple ethernet interfaces only works under Linux 2.4. If you are running Linux 2.2 then the interface name on the
setether command line must match the one in /etc/decnet.conf(5).
SEE ALSO
decnet.conf(5), dntype(1), dndir(1), dndel(1), dnetd(8), dnping(1)
DECnet utilities March 01 2001 SETETHER(8)