IBM HS20 User Guide - Page 65

Configuring, Gigabit, Ethernet, controllers, Blade, server, controller, enumeration - ethernet drivers

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Configuring the Gigabit Ethernet controllers Two Ethernet controllers are integrated on the blade server system board. Each controller provides a 1000-Mbps full-duplex interface for connecting to one of the Ethernet-compatible switch modules in I/O module bays 1 and 2, which enables simultaneous transmission and reception of data on the Ethernet local area network (LAN). Each Ethernet controller on the system board is routed to a different switch module in I/O module bay 1 or bay 2. The routing from Ethernet controller to I/O module bay will vary based on blade server type and the operating system that is installed. See "Blade server Ethernet controller enumeration" on page 51 for information about how to determine the routing from Ethernet controller to I/O module bay for your blade server. Note: Other types of blade servers, such as the BladeCenter HS20 Type 8678 blade server, that are installed in the same BladeCenter unit as the BladeCenter HS20 Type 8832 blade server might have different Ethernet controller routing. See the documentation that comes with the other blade servers for detailed information. You do not have to set any jumpers or configure the controllers for the blade server operating system. However, you must install a device driver to enable the blade server operating system to address the Ethernet controllers. For device drivers and information about configuring your Ethernet controllers, see the Broadcom NetXtreme Gigabit Ethernet Software CD that comes with your blade server. For updated information about configuring the controllers, go to the IBM Support Web site at http://www.ibm.com/pc/support/. Your Ethernet controllers support failover, which provides automatic redundancy for your Ethernet controllers. Without failover, you can have only one Ethernet controller from each server attached to each virtual LAN or subnet. With failover, you can configure more than one Ethernet controller from each server to attach to the same virtual LAN or subnet. Either one of the integrated Ethernet controllers can be configured as the primary Ethernet controller. If you have configured the controllers for failover and the primary link fails, the secondary controller takes over. When the primary link is restored, the Ethernet traffic switches back to the primary Ethernet controller. (See your operating system device driver documentation for information about configuring for failover.) Important: To support failover on the blade server Ethernet controllers, the Ethernet switch modules in the BladeCenter unit must have identical configurations to each other. Blade server Ethernet controller enumeration The enumeration of the Ethernet controllers in a blade server is operating-system dependent. You can verify the Ethernet controller designations a blade server uses through your operating-system settings. The routing of an Ethernet controller to a particular I/O-module bay depends on the type of blade server. You can verify which Ethernet controller is routed to which I/O-module bay by using the following test: Chapter 4. Configuring the blade server 51

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Configuring
the
Gigabit
Ethernet
controllers
Two
Ethernet
controllers
are
integrated
on
the
blade
server
system
board.
Each
controller
provides
a
1000-Mbps
full-duplex
interface
for
connecting
to
one
of
the
Ethernet-compatible
switch
modules
in
I/O
module
bays
1
and
2,
which
enables
simultaneous
transmission
and
reception
of
data
on
the
Ethernet
local
area
network
(LAN).
Each
Ethernet
controller
on
the
system
board
is
routed
to
a
different
switch
module
in
I/O
module
bay
1
or
bay
2.
The
routing
from
Ethernet
controller
to
I/O
module
bay
will
vary
based
on
blade
server
type
and
the
operating
system
that
is
installed.
See
“Blade
server
Ethernet
controller
enumeration”
on
page
51
for
information
about
how
to
determine
the
routing
from
Ethernet
controller
to
I/O
module
bay
for
your
blade
server.
Note:
Other
types
of
blade
servers,
such
as
the
BladeCenter
HS20
Type
8678
blade
server,
that
are
installed
in
the
same
BladeCenter
unit
as
the
BladeCenter
HS20
Type
8832
blade
server
might
have
different
Ethernet
controller
routing.
See
the
documentation
that
comes
with
the
other
blade
servers
for
detailed
information.
You
do
not
have
to
set
any
jumpers
or
configure
the
controllers
for
the
blade
server
operating
system.
However,
you
must
install
a
device
driver
to
enable
the
blade
server
operating
system
to
address
the
Ethernet
controllers.
For
device
drivers
and
information
about
configuring
your
Ethernet
controllers,
see
the
Broadcom
NetXtreme
Gigabit
Ethernet
Software
CD
that
comes
with
your
blade
server.
For
updated
information
about
configuring
the
controllers,
go
to
the
IBM
Support
Web
site
at
Your
Ethernet
controllers
support
failover,
which
provides
automatic
redundancy
for
your
Ethernet
controllers.
Without
failover,
you
can
have
only
one
Ethernet
controller
from
each
server
attached
to
each
virtual
LAN
or
subnet.
With
failover,
you
can
configure
more
than
one
Ethernet
controller
from
each
server
to
attach
to
the
same
virtual
LAN
or
subnet.
Either
one
of
the
integrated
Ethernet
controllers
can
be
configured
as
the
primary
Ethernet
controller.
If
you
have
configured
the
controllers
for
failover
and
the
primary
link
fails,
the
secondary
controller
takes
over.
When
the
primary
link
is
restored,
the
Ethernet
traffic
switches
back
to
the
primary
Ethernet
controller.
(See
your
operating
system
device
driver
documentation
for
information
about
configuring
for
failover.)
Important:
To
support
failover
on
the
blade
server
Ethernet
controllers,
the
Ethernet
switch
modules
in
the
BladeCenter
unit
must
have
identical
configurations
to
each
other.
Blade
server
Ethernet
controller
enumeration
The
enumeration
of
the
Ethernet
controllers
in
a
blade
server
is
operating-system
dependent.
You
can
verify
the
Ethernet
controller
designations
a
blade
server
uses
through
your
operating-system
settings.
The
routing
of
an
Ethernet
controller
to
a
particular
I/O-module
bay
depends
on
the
type
of
blade
server.
You
can
verify
which
Ethernet
controller
is
routed
to
which
I/O-module
bay
by
using
the
following
test:
Chapter
4.
Configuring
the
blade
server
51