NEC N8405-019, User Manual

Page: 33 / 384

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NOTES:
 Check that LAN cables are connected above and below
appropriately. Each of the EM cards recognizes the positional
relationship among the Blade Enclosures in the rack depending on
the cable connections to the UPPER and LOWER ports on the
Blade Enclosures. Some incorrect cable connection disables the EM
cards to recognize the positional relationship among the Blade
Enclosures properly.

Up to six Blade Enclosures can be subject to the Blade Enclosure
Inter Connect.
 See Connection of UPPER port / LOWER port on page 24 for cable
connection.
Bridge Function
The EM card bridges a packet from the EM1/EM2 port at the rear of the Blade Enclosure to the
internal network. It enables network communication between the management unit of the CPU
blades and switch modules in Blade Enclosure (e.g., EXPRESSSCOPE Engine) and the external
devices.
NOTE:
When bridging, the EM card executes port filtering to prevent
unnecessary packet from flowing in the network.
The port number 49623 is used exclusively by EM card, and cannot be
used in any other purposes.