Hitachi Compute Blade 2000, User Manual

Page: 1364 / 1927

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(3) Examples of promiscuous mode
Set the promiscuous mode to “Through” in the following environment.
# Environment
Behavior with promiscuous mode
“Restricted”
(a) Bridge is implemented in a guest OS. Cannot transfer any packet.
(b) MAC address is changed in a guest
OS.
Cannot transfer any packet.
(c) Load balancing using the MAC
address shared by multiple NICs is
used.
Load balancing (redundancy
function) does not work properly.
(a) Bridge is implemented in a guest OS:
When implementing the bridge in a guest OS, make sure to set the
promiscuous mode to “Through” for the internal virtual switch of LPAR
manager connected to the guest OS.
The following figure shows how to transfer a packet when the bridge is
implemented in the guest OS. When the promiscuous mode is set to Through
for each port1 of the virtual LAN switch (1a) and (2a), communication with
nodes is available across the bridge. That is because port1 of both virtual LAN
switches can transfer packets not to the MAC address of LPAR1 NIC.
Since setting “Through” in port1
allows all packets to be transferred,
communication with nodes across
the bridge is available.
LPAR1
LPAR2 LPAR3
LPAR16
……………
1a 1a 1a
2
1 2 3 16
17
Virtual LAN Switch
(1a)
External Network
-1
LPAR manager
1 2 3 16
17
Virtual LAN Switch
(2a)
2a
External Network
-2
・・・・・ ・・・・・
x
:
Through
setting
2a
Bridge
x
:
Restricted
setting
17 : Port for external connection (always
Through)
: Physical NIC port