BY default the first IP address reached on the device is used for Simple Network Management Protocol (SNMP) communications. Unfortunately the IP may not be resolvable from the CommandCentral Storage Control Host.
About monitoring devices with SNMP (ref: Page 214 of the Admin Guide)
CommandCentral Storage monitors most switches and storage arrays with Simple Network Management Protocol (SNMP).
For monitoring to work, devices must adhere to the following requirements:
■ Have an IP address or fully-qualified device name known to CommandCentral Storage
■ Run the SNMP agent that is accessible from the Management Server
Note: See the Veritas CommandCentral 5.2 RU3 Hardware and Software Compatibility List for compatible devices and the CommandCentral Hardware and Software Configuration Guide for detailed configuration requirements for a vendor’s device.
Note: Some switches and arrays implement SNMP in a different way or not at all. CommandCentral Storage can still monitor these devices, with some extra configuration:
■ Some devices do not have an IP address attribute with a valid IP address; however, you can manually add an SNMP IP address attribute to enable monitoring. Network Appliance (NetApp) Filers use object identifiers (OID) for SNMP queries.
ISSUE:
Netapp filers are not reporting performance data. Getting error Unreachable via IP (or Unreachable via SNMP)
STATUS:
CCS Administrators need to change the configuration for the Netapp filer to use different than the default first available IP for SNMP communications.
Resolution:
Configuration change is required:
Determine which filer is not returning performance data:
check the performance report an note if a NetApp Filer is missing from a table or has (N/A) as a value.
On the Managing Summary » NAS and Unified Storage Systems » Filername page click on the Overview tab and note the available IP addresses under
IP Address:
Example:
Open The NAS and Unified Storage Systems page:
Select a filer that is NOT returning performance data
Click on the Display Name link and view the IP addresses identified on the NetApp filer:
Test each one with the SNMPWalk tool (attached below) until data is returned (community string should be public or additional configuration is required)
Find a successful IP that has returned data and use it to create a new attribute.
In the drop-down list in the upper right corner of the page above the Attributes tab, click the down arrow, select Create Attribute. Then, click Go.
In the Create Attribute dialog box, do the following:
In the Attribute Name field (which is case-sensitive), type the name of the new attribute: Xt_SNMPIPAttribute
In the Attribute Value field, type the IP address of the switch.
Note: this entry is case sensitive on all Operating Systems.
A message displays stating that the task has been submitted.
Click OK.
Then navigate to the Attributes tab
Reconfiguration should allow CCS commands to talk to the array via SNMP for trapping and monitoring as CCS begins to perform SNMP monitoring using the specified IP and the new attribute shows up on the last page as the last entry in the Attributes table.
Allow a complete polling cycle to complete (Default is 30 minutes) and recheck the performance report data.
