IBM JS20 Hardware Maintenance Manual - Page 29

Blade, server, Ethernet, controller, enumeration

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traffic switches back to the primary Ethernet controller port. (See the operating-system device driver documentation for information about configuring for failover.) Important: To support failover on the blade server Ethernet controller, 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 or controller ports in a blade server is operating-system dependent. You can verify the Ethernet controller or controller port designations that a blade server uses through the operating-system settings. The routing of an Ethernet controller or controller port to a particular BladeCenter unit I/O bay depends on the type of blade server. You can verify which Ethernet controller port in this blade server is routed to which I/O bay by using the following test: 1. Install only one Ethernet switch module or pass-thru module in I/O bay 1. 2. Make sure that the ports on the switch module or pass-thru module are enabled (I/O Module Tasks → Management → Advanced Management in the BladeCenter management-module Web interface). 3. Enable only one of the Ethernet controller ports on the blade server. Note the designation that the blade server operating system has for the controller port. 4. Ping an external computer on the network connected to the Ethernet switch module. If you can ping the external computer, the Ethernet controller port that you enabled is associated with the switch module in I/O bay 1. The other Ethernet controller port in the blade server is associated with the switch module in I/O bay 2. If you have installed an I/O expansion card on a blade server, communications from the option are routed to I/O bays 3 and 4. You can verify which controller port on the card is routed to which I/O bay by performing the above test, using a controller on the I/O expansion card and a compatible switch module or pass-thru module in I/O bay 3 or 4. Chapter 3. Configuration 19

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traffic
switches
back
to
the
primary
Ethernet
controller
port.
(See
the
operating-system
device
driver
documentation
for
information
about
configuring
for
failover.)
Important:
To
support
failover
on
the
blade
server
Ethernet
controller,
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
or
controller
ports
in
a
blade
server
is
operating-system
dependent.
You
can
verify
the
Ethernet
controller
or
controller
port
designations
that
a
blade
server
uses
through
the
operating-system
settings.
The
routing
of
an
Ethernet
controller
or
controller
port
to
a
particular
BladeCenter
unit
I/O
bay
depends
on
the
type
of
blade
server.
You
can
verify
which
Ethernet
controller
port
in
this
blade
server
is
routed
to
which
I/O
bay
by
using
the
following
test:
1.
Install
only
one
Ethernet
switch
module
or
pass-thru
module
in
I/O
bay
1.
2.
Make
sure
that
the
ports
on
the
switch
module
or
pass-thru
module
are
enabled
(
I/O
Module
Tasks
→
Management
→
Advanced
Management
in
the
BladeCenter
management-module
Web
interface).
3.
Enable
only
one
of
the
Ethernet
controller
ports
on
the
blade
server.
Note
the
designation
that
the
blade
server
operating
system
has
for
the
controller
port.
4.
Ping
an
external
computer
on
the
network
connected
to
the
Ethernet
switch
module.
If
you
can
ping
the
external
computer,
the
Ethernet
controller
port
that
you
enabled
is
associated
with
the
switch
module
in
I/O
bay
1.
The
other
Ethernet
controller
port
in
the
blade
server
is
associated
with
the
switch
module
in
I/O
bay
2.
If
you
have
installed
an
I/O
expansion
card
on
a
blade
server,
communications
from
the
option
are
routed
to
I/O
bays
3
and
4.
You
can
verify
which
controller
port
on
the
card
is
routed
to
which
I/O
bay
by
performing
the
above
test,
using
a
controller
on
the
I/O
expansion
card
and
a
compatible
switch
module
or
pass-thru
module
in
I/O
bay
3
or
4.
Chapter
3.
Configuration
19