Interface Card Critical Resource Analysis(CRA) Whitepaper for HP-UX 11i v3

configuration, re-assign the IP address to an alternative Network interface card (NIC) and then
proceed with the olrad deletion.
Scenario 3
System Configuration:
HP-UX System is running, which has a multi-port Network interface card (NIC),
with one or more NIC ports configured with IP addresses and connected to network.
User Scenario:
Replace the card with another card of same model.
Or
Delete and add a different type of card which can be claimed by the same or different driver.
Operation Performed:
# olrad –C | -r | -d <slot id>
Criticality reported by CRA:
CRA_DATA_CRITICAL
Explanation and user action required:
The olrad(1M) command with –C option reports the resource usage and its criticality.
The above operations with olrad(1M) with –r or –d option (if it were to be allowed) will render the
system inaccessible to the network . This may result in network applications running on the system
hanging, inaccessible to the network client applications, leading to application downtime or any
other indeterminate system state.
Because of the above reasons, the requested olrad operations will not be allowed by CRA to proceed
and the operation will fail with CRA_DATA_CRITICAL error.
However, if the user wants to override the CRA criticality report, he can do so at his own risk by using
the –f option of the olrad command.
If any of these operations must be performed for system administration purposes, then the user must re-
assign all the IP addresses configured on the ports of the NIC to be replaced or deleted to alternative
NIC card(s).
Follow the procedure in Scenario 1 to delete and re-assign the IP addresses.
Scenario 4
System Configuration:
HP-UX System is running, which has a single or multi-port Network interface
card (NIC), with one or more NIC ports configured with IP addresses and connected to network.
User Scenario:
Unload the interface driver of the LAN card to which the IP address is set.
Operation Performed:
# kcmodule <interface driver associated with card>=unused
Criticality reported by CRA:
CRA_DATA_CRITICAL
Explanation and user action required:
The above operation with kcmodule(1M) will render the system inaccessible to network. This may
result in network applications running on the system hanging, inaccessible to the network client
applications, leading to application downtime or any other indeterminate system state.
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