Hitachi Compute Blade 2000 User Manual page 852

Do not change or delete the management port setting because the management module
might not be able to monitor.
Note that from lines 13 to 24 (slot 0, 1), and lines 13, 14, 23, 24 (slot 2-5) in the LAN switch

module cannot be used. Do not change the default configuration from shipment.
Slots for the 10BASE-R are Line 25 and 26 on the 10 Gbps LAN switch module.
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Transceivers 10GBASE-LR and the 10GBASE-SR are available. Note that the 10GBASE-
ER is unavailable.
The 10GBASE-R transceiver is available as an option and you can purchase and use the

optional item. For details, see the List of Options. If you use any other 10GBASE-R
transceiver other than the option, correct operation or safety is not guaranteed.
Laser light is used for the 10GBASE-R transceiver. (Laser light is colorless and transparent,

meaning that it is invisible to the human eye.) Never look directly into the light-
transmitting/receiving unit.
In the default configuration, limit-queue-length of transmission in physical ports is set to

1976, and also "flowcontrol send on" is set to all ports.
When you start the switch module, restart it by unplugging and plugging, or restart the

switch module using an operational command, linkup (1), linkdown (2), and linkup (3) might
be detected for a couple of seconds in the onboard LAN and LAN mezzanine card of the
server blade at the linkup immediately after the boot. Usually a linkup (3) is detected once.
Since this occurs immediately after the switch module starts, operation will not have any
problem. Logs of (1), (2), and (3), however, might be collected in the log information of OS
(Windows or Linux).
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