HP XP20000/XP24000 User manual

HP StorageWorks
XP24000/XP20000 SNMP Agent Reference
Guide
Abstract
This guide describes the implementation of SNMP for monitoring HP StorageWorks XP24000/XP20000 storage systems. The
guide lists the monitored storage system components and supported traps, describes the trap protocol and extension MIB, and
explains how to use the GUI to limit SNMP access to specific SNMP managers. The intended audience is a storage system
administrator or authorized service provider with independent knowledge of HP StorageWorks XP storage systems and Remote
Web Console.
HP Part Number: AE131-96088
Published: May 2011
Edition: Thirteenth

© Copyright 2007, 2011 Hewlett-Packard Development Company, L.P.
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Acknowledgments
Microsoft, Windows, and Windows XP are U.S. registered trademarks of Microsoft Corporation.
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Revision History
DescriptionDateEdition
This edition applies to microcode version 60-01-31-00/00 or later.June 2007First
This edition applies to microcode version 60-02-04-00/00 or later.September 2007Second
This edition applies to microcode version 60-02-25-00/00 or later.January 2008Third
This edition applies to microcode version 60-02-48-00/00 or later.April 2008Fourth
This edition applies to microcode version 60-03-04-00/00 or later.June 2008Fifth
This edition applies to microcode version 60-03-24-00/00 or later.September 2008Sixth
This edition applies to microcode version 60-04-04-00/00 or later.December 2008Seventh
This edition applies to microcode version 60-04-13-00/00 or later.February 2009Eighth
This edition applies to microcode version 60-05-00-00/00 or later.June 2009Ninth
This edition applies to microcode version 60-06-05-00/00 or later.December 2009Tenth
This edition applies to microcode version 60-07-00-00/00 or later.June 2010Eleventh
This edition applies to microcode version 60-07-50-00/00 or later.October 2010Twelfth
This edition applies to microcode version 60-08-01-00/00 or later.May 2011Thirteenth

Contents
1 Overview of SNMP.....................................................................................5
SNMP Manager Overview........................................................................................................5
SNMP Manager and SNMP Agent Interaction.........................................................................5
Management Information Base (MIB)......................................................................................6
SNMP Agent Overview.............................................................................................................6
System Configuration............................................................................................................6
SNMP Agent Functions.........................................................................................................7
SNMP Manager Functions.........................................................................................................8
Component Status Information...............................................................................................8
2 Using the SNMP GUI................................................................................10
SNMP Information Tab............................................................................................................10
3 Performing SNMP Operations....................................................................14
Adding SNMP Manager IP Addresses.......................................................................................14
Deleting SNMP Manager IP Addresses......................................................................................15
Adding a Community Name....................................................................................................16
Deleting a Community Name...................................................................................................17
Changing a Community Name.................................................................................................17
Adding Community IP Addresses..............................................................................................18
Deleting a Community IP Address.............................................................................................19
Testing the SNMP Trap Report..................................................................................................20
4 SNMP Supported MIB...............................................................................21
Trap Configuration..................................................................................................................21
Extension Trap Specifications...............................................................................................21
Extension Trap PDU............................................................................................................21
Standard MIB Specifications....................................................................................................22
Supported MIB..................................................................................................................22
MIB Access Mode..............................................................................................................22
Object Identifier System......................................................................................................22
Supported Traps................................................................................................................24
MIB Mounting Specifications...............................................................................................24
Extension MIB Specifications....................................................................................................25
Extension MIB Configuration...............................................................................................25
Extension MIB Configuration....................................................................................................32
5 SNMP Failure Trap Reference.....................................................................34
6 Troubleshooting........................................................................................41
Mitigating SNMP Errors...........................................................................................................41
Calling HP Technical Support...................................................................................................41
7 Support and Other Resources.....................................................................42
Related Documentation............................................................................................................42
Conventions for Storage Capacity Values...................................................................................42
HP Technical Support..............................................................................................................42
Contents 3

Subscription Service................................................................................................................43
HP Websites..........................................................................................................................43
Documentation Feedback.........................................................................................................43
Glossary....................................................................................................44
Index.........................................................................................................46
4 Contents

1 Overview of SNMP
This chapter provides an overview of SNMP including an overview of the agent and management
functions:
•“SNMP Manager Overview” (page 5)
•“SNMP Agent Overview” (page 6)
•“SNMP Manager Functions” (page 8)
Unless otherwise specified, the term storage system in this guide refers to the following disk arrays:
•HP StorageWorks XP24000 Disk Array
•HP StorageWorks XP20000 Disk Array
The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer
browser. Actual windows may differ depending on the operating system and browser used. GUI
contents also vary with licensed program products, storage system models, and firmware versions.
SNMP Manager Overview
SNMP Manager and SNMP Agent Interaction
The following figure shows an SNMP environment.
Figure 1 SNMP Environment
SNMP is an industry-standard protocol for managing and monitoring network devices, including
disk devices, routers, and hubs. SNMP uses SGMP to manage the TCP/IP gateways.
The standardized configuration and database of network management information is called a
MIB. A standard MIB is common to all SNMP interfaces. An extension MIB is defined by the
particular managed device or protocol.
An SNMP manager monitors the devices, which are referred to as managed nodes. The primary
types of interaction between the SNMP manager and an SNMP agent are polling and trap.
Typically, the SNMP manager polls the SNMP agents on a periodic basis, to determine whether
the device is operating normally. If an abnormal event occurs, the SNMP Agent can report the
condition without a request from the manager, by using a message called trap.
When an SNMP Manager polls the agent, the following dialog takes place:
•An SNMP manager sends a request packet to an SNMP agent, which requests data regarding
the status of managed node.
•The SNMP agent sends a response packet back to the SNMP manager.
SNMP Manager Overview 5

•SNMP uses the TCP/IP UDP. If the SNMP agent does not respond within a specified time
period, the SNMP manager re-sends the request packet. That time period is set by the system
administrator, taking into account the network traffic and operation policy.
•If an SNMP agent again does not respond to the re-sent packet, the SNMP manager assumes
that an error has occurred. Depending on the times set for polling and response, this can take
several seconds.
If an SNMP agent detects an abnormal event, it sends a trap to the SNMP manager. However, if
a trap is dropped in transmission, the SNMP manager does not know that it was sent. For this
reason, you should use both polling and traps to determine whether an abnormal event has
occurred.
Management Information Base (MIB)
Each managed device has certain types of information, including the configuration information,
the status information for device, and statistical, which is known collectively as a Management
Information Base (MIB). Each parameter is called a managed object, and it consists of the parameter
name, one or more parameter(s), and a group of operations that can be executed with the object.
The MIB defines the type of information that can be obtained from a managed device, and the
device settings that can be controlled from a management system.
SNMP Agent Overview
System Configuration
The SNMP agent for the HP storage system is on the SVP, which is the computer within the storage
array that manages the storage system. The storage system has an exclusive LAN for communications
between a disk controller and a service processor, and a separate LAN for SNMP. The configuration
of each Network Management Station is determined by the type of SNMP Manager. The following
figure illustrates the SNMP environment.
Figure 2 SNMP Environment Architecture
The following figure shows an example of SNMP operations by using an SNMP manager.
6 Overview of SNMP

Figure 3 Example of SNMP Operations
SNMP Agent Functions
SNMP Traps
An SNMP agent reports a storage system error to a SNMP manager using the trap report function.
If an error occurs, an SNMP agent issues an SNMP trap to an SNMP manager to report a failure.
Issuing an SNMP trap, an SNMP agent also reports a product number, nickname, reference code,
and an identifier of the component.
The following table lists the events that trigger an SNMP agent trap.
Table 1 SNMP Trap Triggering Events
DescriptionEvents
All operations in a storage system stopped.Acute failure detected.
Operation in a component where a failure occurred
stopped.
Serious failure detected.
Partial failure.Moderate failure detected.
Minor failure.Service failure detected.
An SNMP agent logs the most recent 256 traps, so you can see the trap history of a particular
device.
SNMP Agent Operations
The following table lists the types SNMP Agent operations.
Table 2 SNMP Agent Operations
DescriptionOperation
Obtains a specific MIB object value.
GET REQUEST is the request from an SNMP manager, and
GET RESPONSE is the agent's response to that request.
GET
Continuously finds a MIB object.
GETNEXT REQUEST is the request from an SNMP manager,
and GETNEXT RESPONSE is the agent's response to that
request.
GETNEXT
Reports an event (failure) to an SNMP manager.
TRAP occurs without a request from the SNMP manager.
TRAP
SNMP Agent Overview 7

Error Report
The following table lists the errors to be reported for the REQUEST operations.
Table 3 SNMP Agent REQUEST Operations
Corrective ActionDescriptionError
N/ANormalnoError(0)
Verify that the requested object is
correct.
•There are no MIB objects that are
required. (Not supported).
•The GETNEXT REQUEST command
that is specified for the following
object identifier of the last
supported MIB object is received.
noSuchName(2)
SET operation is not supported.SET REQUEST is received.readOnly(4)
Retry the operation.Error occurred for other reasons.genErr(5)
SNMP Manager Functions
Component Status Information
You can obtain the status information for certain storage system components from an SNMP
manager. The following table lists the components for which the status can be obtained.
Table 4 Available Component Status Information
Component NameArea
ProcessorStorage System
BUS
Cache
Shared memory
Power supply
Battery
Fan
Others
Hard Disk Drive
Power supplyDisk Unit
Fan
Others
Drive
The following table lists the storage system component status as well as the trap report function.
Table 5 Storage system Component Status Types
DescriptionStatus
Normal operation.Normal
All operations in a storage system stopped.Acute failure detected
Operation in a component where a failure occurred stopped.Serious failure detected
8 Overview of SNMP

Table 5 Storage system Component Status Types (continued)
DescriptionStatus
Partial failure.Moderate failure detected
Minor failure.Service failure detected
SNMP Manager Functions 9

2 Using the SNMP GUI
This chapter explains the SNMP information tab:
•“SNMP Information Tab” (page 10)
SNMP Information Tab
The SNMP IP Security tab allows you to limit SNMP access to specific SNMP managers and to
enter SNMP trap addresses. Click Go –Install –SNMP SNMP IP Security in the menu bar of Remote
Web Console Main window. The SNMP IP Security tab displays. Select the SNMP SNMP IP Security
tab (see “SNMP Information Tab” (page 11)).
Option buttons (left side of the window) and storage system information icons (window upper right
corner) have been omitted from the screen shot. See HP StorageWorks XP24000/XP20000 Remote
Web Console User Guide for an illustration.
10 Using the SNMP GUI

Figure 4 SNMP Information Tab
Table 6 SNMP Information Tab
DescriptionItem
The Extension SNMP check box is selected if the SNMP
Agent feature is enabled.
To set the SNMP Agent properties from XP Remote Web
Console computer, select Extension SNMP on SNMP
Information window.
Install
The Manager section allows you to add and delete SNMP
manager information (see “Adding SNMP Manager IP
Addresses” (page 14)).
Manager
Displays the IP addresses of registered SNMP managers
from which the SNMP agent accepts requests. If no
manager is registered, the SNMP agent accepts requests
from all managers. You can register up to 32 managers.
IP Address list box
SNMP Information Tab 11

Table 6 SNMP Information Tab (continued)
DescriptionItem
Enter the IP address of the manager that the SNMP Agent
receives the request from.
•Ipv4 and Ipv6 addresses can be specified for IP
Address. However, if the OS of SVP is Windows XP
and you enter Ipv6 address and select Apply, an error
message is displayed and the Ipv6 address is not set.
•Any IP address having all values set to zero (0) cannot
be specified for Ipv4 and Ipv6.
•The Ipv4 address is specified by entering four (4)
numbers that are separated by periods (.) using a
maximum 3 digits from zero (0) to 255 inclusive (for
example, XXX.XXX.XXX.XXX where X is a number). Enter
the numbers only and do not enter periods.
•The Ipv6 address is specified by entering eight (8)
hexadecimal numbers that are separated colons (:) using
a maximum 4 digits from zero (0) to FFFF inclusive (for
example,
YYYY:YYYY:YYYY:YYYY:YYYY:YYYY:YYYY:YYYY where
Y is a hexadecimal number). Enter the hexadecimal
numbers only and do not enter the colons. The cursor
can be moved between the entry field using the Tab
key.
IP Address text box
Is selected when entering an Ipv4 address. The Ipv4
address can be entered to IP address text box when this
radio box is selected.
Ipv4 radio box
Is selected when entering Ipv6 address. The Ipv6 address
can be entered to IP address text box when this radio box
is selected.
Ipv6 radio box
Adds new IP addresses to the IP Address list box.Set
Allows you to add, delete, or change SNMP trap
information. The registered IP address is the trap destination
for the specified community.
•Each community can have more than one defined IP
address (see “Adding a Community Name” (page 16)
and “Adding Community IP Addresses” (page 18)).
•You can register up to 32 community names and up to
32 IP addresses per community name.
•You can use up to 180 alphanumeric characters for a
community name. You cannot use the following: ",\,
;,:,,,*,?,<,>,|,/,^,&,%, and a space before or
after the community name.
Community & Trap
12 Using the SNMP GUI

Table 6 SNMP Information Tab (continued)
DescriptionItem
Allows you to add, delete or change SNMP system group
information. If system group information has already been
registered, the registered information displays. To register
the system group information, the Extension SNMP check
box must be selected. When you register system group
information, select Apply. System group information is as
follows:
•Name: Connected storage system name. Remote Web
Console users can change the device name. You can
use up to 180 alphanumeric characters for a device
name. You cannot use the following: ",\,;,:,,,*,?,
<,>,|,/,^,&,%, . You can use a space in the middle
of the device name, but not before and after and a
space before or after the device name.
The device name is required to use SNMP Agent. Make
sure to document the device name, because settings
will be cleared when SVP is replaced.
•Contact: Contact information such as personnel and
telephone numbers where you can inquire about the
connected storage system. Remote Web Console users
can change contact information in Modify mode. Enter
contact information using up to 180 alphanumeric
characters (ASCII codes), except for some symbols, such
as ",\,;,:,,,*,?,<,>,|,/,^,&, and %. You can
also use a space, except before and after contact
information.
A contact name is required to use SNMP Agent. Make
sure to document the contact name, because settings
will be cleared when SVP is replaced.
•Location: Location of connected storage system. Remote
Web Console users can change device locations with
the modify mode. You must enter a device location using
up to 180 alphanumeric characters (ASCII codes). You
can use a space, except for before and after the
location. You cannot use some symbols, such as ",\,
;,:,,,*,?,<,>,|,/,^,&, and %.
The device location is required to use SNMP Agent.
Make sure to document the device location, because
the settings will be cleared when SVP is replaced.
System Group
Executes test report of the trap to the community registered
in the disk storage system.
Operation in Modify mode is required to use this button.
Operation authority is required as well.
Trap Test
Implements settings made on this window.Apply
Cancels settings made on this window.Cancel
SNMP Information Tab 13

3 Performing SNMP Operations
This chapter covers adding and deleting an SNMP manager IP address, adding and deleting a
community name, along with adding and deleting a community IP address:
•“Adding SNMP Manager IP Addresses” (page 14)
•“Deleting SNMP Manager IP Addresses” (page 15)
•“Adding a Community Name” (page 16)
•“Deleting a Community Name” (page 17)
•“Changing a Community Name” (page 17)
•“Adding Community IP Addresses” (page 18)
•“Deleting a Community IP Address” (page 19)
•“Testing the SNMP Trap Report” (page 20)
Adding SNMP Manager IP Addresses
To add SNMP Manager IP addresses:
1. Log on to open Remote Web Console Main window. Change to Modify mode (see the HP
StorageWorks XP24000/XP20000 Remote Web Console User Guide if you need instructions).
2. Click Go – Environmental Settings – SNMP Information in the menu bar of Remote Web Console
Main window. The SNMP Information window is displayed (see “SNMP Information Tab”
(page 11)).
3. Select the radio box of Ipv4 or Ipv6 and specify the version of the IP address you enter.
NOTE: If the OS of SVP is Windows XP and you enter Ipv6 address and select Apply, an
error message is displayed and the Ipv6 address is not set.
4. Enter desired numerical IP address in IP Address text box (see “Adding SNMP Manager IP
Address (Top: Before Setting, Bottom: After Setting)” (page 15)).
5. Select Set. The new IP address is added to IP Address list, but the changes are not implemented.
14 Performing SNMP Operations

6. Select Apply to implement the changes, or select Cancel to cancel the changes, then select
OK on the confirmation message.
Figure 5 Adding SNMP Manager IP Address (Top: Before Setting, Bottom: After Setting)
Deleting SNMP Manager IP Addresses
To delete an SNMP Manager IP address:
1. Change to Modify mode.
2. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window is displayed
(see “SNMP Information Tab” (page 11)).
3. Select one or more unwanted IP addresses in IP Address list box. Right-click to display Delete
IP Address menu (see “Delete IP Address Menu” (page 16)).
4. Select Delete IP Address.
5. A confirmation message displays. Select OK or Cancel.
6. Select Apply. Select OK or Cancel.
Deleting SNMP Manager IP Addresses 15

Figure 6 Delete IP Address Menu
Adding a Community Name
To add a community name:
1. Change to Modify mode.
2. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window is displayed
(see “SNMP Information Tab” (page 11)).
3. In Community & Trap box, select and right-click Community.Add Community menu displays
(see “Add Community Menu” (page 16)).
4. Select Add Community.Community dialog box (see “Add Community dialog box” (page 17))
displays.
5. In the Community text box, enter desired community name. You can use up to 180
alphanumeric characters, except for ",\,;,:,,,*,?,<,>,|,/,^,&, and %. You can also
use spaces, except at the beginning or the end of the name.
6. Select OK. The new community name displays in Community & Trap, but the changes are not
yet implemented in the storage system.
7. To add one or more IP addresses to the new community, see “Adding Community IP Addresses”
(page 18).
8. To apply changes, select Apply. Select OK or Cancel.
Figure 7 Add Community Menu
16 Performing SNMP Operations

Figure 8 Add Community dialog box
Deleting a Community Name
To delete a community name:
1. Change to Modify mode.
2. Log on to open Remote Web Console Main window, click Go – Environmental Settings – SNMP
Information in the menu bar of Remote Web Console Main window. The SNMP Information
window is displayed (see “SNMP Information Tab” (page 11)).
3. In Community & Trap, select and then right-click the unwanted community. The Delete
Community menu displays (see “Delete Community Menu” (page 17)).
4. Select the Delete Community command. A confirmation message displays.
5. Select OK or Cancel. The selected community is deleted from Community & Trap, but the setting
is not yet implemented in the storage system.
6. Select Apply. Select OK or Cancel on the confirmation message.
Figure 9 Delete Community Menu
Changing a Community Name
To change a community name:
1. Change to Modify mode (see the HP StorageWorks XP24000/XP20000 Remote Web Console
User Guide if you need instructions).
2. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window is displayed
(see “SNMP Information Tab” (page 11)).
3. Select and then right-click the community name that you want to change in Community & Trap.
The Change Community menu displays (see “Change Community Menu” (page 18)).
Deleting a Community Name 17

4. Select Change Community. The Change Community dialog box displays (see “Change
Community dialog box” (page 18)).
5. In the Community text box, overwrite the old community name with a new community name.
You can use up to 180 alphanumeric characters, except for ",\,;,:,,,*,?,<,>,|,/,^,&,
and %. You can also use spaces, except at the beginning or the end of the name.
6. Select OK. The changed community name displays in Community & Trap, but the changes
are not yet implemented in the storage system.
7. Select Apply. Select OK or Cancel.
Figure 10 Change Community Menu
Figure 11 Change Community dialog box
Adding Community IP Addresses
To add a community IP address:
1. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window is displayed
(see “SNMP Information Tab” (page 11)).
2. Select and right-click the desired community to display the Add Community menu (see “Add
IP Address Menu” (page 19)).
3. Select Add IP Address. The Add IP Address dialog box displays (see “IP Address dialog box”
(page 19)).
4. In IP Address, enter a new IP address or select an existing IP address.
18 Performing SNMP Operations

NOTE:
•If the values for an IP address are all set to zero (0), that address cannot be specified for
Ipv4 and Ipv6.
•The Add IP Address dialog box does not support shortened expression for Ipv6 address.
Enter 8 hexadecimal numbers that are separated colons (:) to a maximum 4 digits from
zero (0) to FFFF inclusive.
•When the OS of the SVP is Windows XP, if you enter an Ipv6 address and select Apply,
an error message is displayed and the Ipv6 address cannot be set.
5. Select OK. The new IP address displays in Community & Trap, but the change is not yet
implemented.
6. Select Apply. Select OK or Cancel.
Figure 12 Add IP Address Menu
Figure 13 IP Address dialog box
Deleting a Community IP Address
To delete a community IP address:
1. Change to Modify mode.
2. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window is displayed
(see “SNMP Information Tab” (page 11)).
3. Select SNMP Information.
4. In Community & Trap, select the unwanted community IP address. Right-click to display Delete
IP Address menu (see “Delete Community IP Address Menu” (page 20)).
Deleting a Community IP Address 19

5. Select Delete IP Address. A confirmation message displays.
6. Select OK or Cancel. The selected IP address is deleted from Community & Trap, but the change
is not yet implemented.
7. Select Apply or Cancel. Select OK on the confirmation message.
Figure 14 Delete Community IP Address Menu
Testing the SNMP Trap Report
To test the SNMP Trap report:
1. Log on to Remote Web Console. Click Go – Environmental Settings – SNMP Information in the
menu bar of Remote Web Console Main window. The SNMP Information window appears.
2. Change to Modify mode.
3. Select Trap Test. A confirmation message displays.
4. Select OK or Cancel. Verify whether the SNMP trap report, which is reference code 7FFFFF,
is received by the SNMP manager registered in the community.
20 Performing SNMP Operations