HP NetServer AA 4000 HP AA HP Netserver 4000 Reference Guide - Page 74

Public Rail Configuration IOP

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HP NetServer AA onward if the first NIC fails. The CEs will then generate a series of requests to be carried out by the resources of the IOPs. When the transaction is completed by the CEs and both CEs send the result to the SSDLs, the IOPs will then prepare to generate LAN traffic, but only one NIC in each rail is the responder or traffic generator directly on the LAN. Public Rail Configuration (IOP) Each public rail consists of a pair of network cards, one on each IOP that will be redirected as part of the set up in the Marathon Configuration Utility. As part of the configuration, the MAC address from one card will be used by the other card simultaneously. This is important to know when troubleshooting so that the administrator avoids booting the IOP into maintenance mode and places on the same local LAN segment a NetServer using its own "real" MAC address that is identical to the MAC address being adopted (spoofed) by the surviving IOP in online mode. NOTE There is no MAC address conflict when one IOP is booted into offline mode since the offline server does not have any active protocols bound to the NIC. 4-8 Hewlett-Packard Company

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HP NetServer AA
Hewlett-Packard Company
4-8
onward if the first NIC fails.
The CEs will then generate a series of
requests to be carried out by the resources of the IOPs.
When the
transaction is completed by the CEs and both CEs send the result to
the SSDLs, the IOPs will then prepare to generate LAN traffic, but
only one NIC in each rail is the responder or traffic generator
directly on the LAN.
Public Rail Configuration (IOP)
Each public rail consists of a pair of network cards, one on each IOP
that will be redirected as part of the set up in the Marathon
Configuration Utility.
As part of the configuration, the MAC
address from one card will be used by the other card simultaneously.
This is important to know when troubleshooting so that the
administrator avoids booting the IOP into maintenance mode and
places on the same local LAN segment a NetServer using its own
“real” MAC address that is identical to the MAC address being
adopted (spoofed) by the surviving IOP in online mode.
NOTE
There is no MAC address conflict when one IOP is booted into
offline mode since the offline server does not have any active
protocols bound to the NIC.