HP ProLiant Gen8 Troubleshooting Guide Volume II: Error Messages

HP Virtual Connect errors 205
HP Virtual Connect errors
SNMP overview
SNMP is used by network management systems to monitor network-attached devices for conditions that
require administrative attention. SNMP consists of a set of standards for network management, including an
Application Layer protocol, a database schema, and a set of data objects.
The SNMP configuration is controlled by VCM and applies to all modules in the VC domain. The SNMP
agent software residing on a primary module provides access to managed information using SNMP
protocol. The managed information is presented as a hierarchical database called a MIB. Each element of
the managed information is identified by a unique identifier called Object ID. Basic SNMP support is
provided for both VC-Enet modules and VC-FC modules.
Each VC module has an independent SNMP agent that supports a set of MIBs. MIB support for each module
depends both on the type of module (VC-Enet or VC-FC) and the role of the module in the VC domain. A
VC-Enet module can be primary, backup, or subordinate based on its ability to run the VCM. By default, the
SNMP agent is enabled on VC-Enet modules with a read community string of "public."
The VC MIBs are provided in the current HP MIB Kit available for download from the HP website
(http://www.hp.com).
The following restrictions and limitations apply:
• You must have Administrative privileges to configure SNMP capabilities. The type of privilege required
depends on the item you are configuring.
• The VCM GUI and CLI do not support configuration of threshold trap parameters (high-water mark,
low-water mark, and averaging period).
• For Flex-10 connections, threshold traps reflect the state of the entire physical port. These traps are not
generated for individual FlexNICs. For more information on Flex-10 connections, see "Flex-10
overview."
• When upgrading from a VC release prior to 3.00, if Fibre Channel SNMP traps were defined with the
DNS type of the Trap Destination address, SNMP settings are not applied to the VC-FC modules upon
completion of the upgrade. To resolve this issue, use the GUI or CLI to edit any FC SNMP trap
destinations that have a DNS name for the trap destination, and change the DNS name to an IPv4
address.
• VC 3.00 and higher limits the number of FC PortStatus traps you can configure through the CLI to five.
Prior releases did not enforce this restriction. If you have more than five FC PortStatus traps configured
in an earlier version of VC firmware, and then you upgrade to VC 3.00 or higher, then those traps are
retained. Similarly, if you restore a configuration from an earlier version of VC firmware that contains
more than five configured FC PortStatus traps in VC 3.00 or higher, you will have more than the allowed
number of configured FC PortStatus traps. Use caution not to exceed the maximum number of
configured FC PortStatus traps in these scenarios.
The following table provides a list of MIBs and where they are supported. FlexFabric modules support the
Fibre and Fabric MIBs in addition to the Enet MIBs.