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

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 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 olrad command.
If any of these operations must be performed for system administration purposes, the user must ensure
that all the IP addresses configured for VLAN IDs are deleted (see ifconfig(1M)) and VLAN
configurations are removed from all NIC port(s) (see lanadmin(1M), nwmgr(1M)).
Select NIC port(s) from alternative card(s), reconfigure the VLAN on alternative ports (see
lanadmin(1M), nwmgr(1M)) and re-assign the IP addresses set for VLAN IDs, as done earlier.
Scenario 7
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 VLAN and IP addresses and connected to
network.
User Scenario:
Deletion of VLAN interface.
Operation Performed:
#nwmgr --cra | --delete –c lan<vppa>
Criticality reported by CRA:
CRA_DATA_CRITICAL
Explanation and user action required:
The nwmgr(1M) command with the --cra option reports the resource usage and its criticality.
The above operation with nwmgr(1M) with the –delete option (if it were to be allowed) will delete the
vlan and IP address making 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 nwmgr operation will not be allowed by CRA to
proceed and the operation will fail with CRA_DATA_CRITICAL error.
If the user wants to perform the delete operation without impacting system or application availability,
another LAN port must be configured with a similar VLAN configuration.
Scenario 8
System Configuration:
HP-UX system is running with IP address assigned to an APA (Auto-port
Aggregation) group and the link aggregate contains LAN ports from two or more NICs.
User Scenario:
Replace the card with another card of same model.
Or
23