HP 316095-B21 - StorageWorks Edge Switch 2/24 Instruction Manual

release notes
HP StorageWorks
Edge Switch
Product Version: FW 06.02.00/HAFM SW 08.02.00
Sixth Edition (September 2004)
Part Number: AA–RTDZF–TE/958–000284–006
These release notes contain late-breaking and supplemental information for the
HP StorageWorks Edge Switch 2/12, Edge Switch 2/24, and Edge Switch 2/32.
For the latest version of these release notes and other edge switch documentation, access the
following HP storage web site:
http://www.hp.com/country/us/eng/prodserv/storage.html .

2 HP StorageWorks Edge Switch release notes
© Copyright 2001–2004 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to,
the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for
errors contained herein or for incidental or consequential damages in connection with the furnishing, performance,
or use of this material.
This document contains proprietary information, which is protected by copyright. No part of this document may be
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The information contained in this document is subject to change without notice. The only warranties for HP products
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errors or omissions contained herein.
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Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The
information is provided “as is” without warranty of any kind and is subject to change without notice. The warranties
for Hewlett-Packard Company products are set forth in the express limited warranty statements for such products.
Nothing herein should be construed as constituting an additional warranty.
Printed in the U.S.A.
HP StorageWorks Edge Switch release notes
Sixth Edition (September 2004)
Part Number: AA–RTDZF–TE/958–000284–006

About this document
3HP StorageWorks Edge Switch release notes
About this document
These release notes contain late breaking and supplemental information for the
Edge Switch 2/12, Edge Switch 2/24, and Edge Switch 2/32.
Be sure to read these release notes before installing an edge switch. This
information is periodically updated and available on the following HP web site:
http://www.hp.com/country/us/eng/prodserv/storage.html .
This section describes the content reflected in this document, including:
■Release notes information, page 3
■Intended audience, page 4
■Firmware version 06.02.00-22, page 4
■Other edge switch documentation, page 4
■CD-ROM directory structure, page 5
■Supported configurations, page 7
■Cable requirements, page 8
■Important information, page 8
■Known issues, page 21
Release notes information
These release notes cover the following major topics:
■Certain unauthorized devices may increase response time for fabric operations
under specific conditions with the Edge Switch 2/24, page 21
■HSG80 transparent mode not supported with IBM AIX, page 21
■HSG80 transparent mode not recommended with controller in SCSI-3 mode
with HP-UX operating systems, page 21
■ISL disconnect causes NOS error with the OpenVMS operating systems,
page 22
■Support for speed Auto-Negotiate, page 22
■Ports may accumulate spurious events, page 23
■Possible switch reset after power failure or power off sequence, page 23
■Deleting a certain switch binding member using EWS may cause an error,
page 23

About this document
4 HP StorageWorks Edge Switch release notes
■SNMP issues, page 23
Intended audience
This document is intended for customers who purchased the Edge Switch 2/12,
Edge Switch 2/24, and Edge Switch 2/32.
Firmware version 06.02.00-22
Firmware 06.02.00-22 is the latest (as of this date) firmware released with the
Edge Switch 2/12, Edge Switch 2/24, and Edge Switch 2/32. A copy of firmware
06.02.00-22, is contained on the HP StorageWorks edge switch documentation
and firmware CD (Part Number 524-000001-005).The latest firmware is also
available on the following HP web site:
http://h18006.www1.hp.com/storage/saninfrastructure.html .
For more information on upgrading firmware versions, refer to the appropriate
HP StorageWorks edge switch service manual. The features of this firmware
version are detailed in the accompanying manuals.
Other edge switch documentation
In addition to these release notes, HP provides the following corresponding
information:
■HP StorageWorks Edge Switch 2/12 Flexport Upgrade Instructions,
AA-RV14C-TE/958-000339-002
■HP StorageWorks Edge Switch 2/12 Installation Guide,
AA-RURCB-TE/958-000340-001
■HP StorageWorks Edge Switch 2/12 Service Manual, AA-RURDB-TE
■HP StorageWorks Edge Switch 2/24 Flexport Upgrade Instruction,
AA-RTDHE-TE/958-000286-004
■HP StorageWorks Edge Switch 2/24 Installation Guide,
AA-RTDWB-TE/958-000283-001
■HP StorageWorks Edge Switch 2/24 Service Manual, AA-RTDXB-TE
■HP StorageWorks Edge Switch Element Manager User Guide,
AA-RV1NA-TE
■HP StorageWorks Edge Switch 2/32 Flexport Upgrade Instruction,
AA-RS33E-TE/958-000291-003

About this document
5HP StorageWorks Edge Switch release notes
■HP StorageWorks Edge Switch 2/32 Installation Guide,
AA-RSTZD-TE/958-000290-002
■HP StorageWorks Edge Switch 2/32 Service Manual, AA-RS2GD-TE
■HP StorageWorks CLI Reference Guide for Directors and Edge Switches,
AA-RQ7AE-TE
■HP StorageWorks SNMP Reference Guide for Directors and Edge Switches,
AA-RQ7BE-TE
■HP StorageWorks SAN High Availability Planning Guide, AA-RS2DD-TE
■HP StorageWorks SAN Design Guide, AA-RMPNN-TE
■HP StorageWorks Embedded Web Server User Guide, AA-RTDRC-TE
■HP StorageWorks HA-Fabric Manager User Guide, AA-RS2CE-TE
■HP StorageWorks HA-Fabric Manager Transition Guide, AA-RV1MA-TE
■HP StorageWorks HA-Fabric Manager Appliance Installation Guide,
AA-RU5FB-TE/958-000324-001
■HP StorageWorks HA-Fabric Manager Release Notes,
AA-RUR6D-TE/958-000288-008
■HP StorageWorks Director and Edge Switch Glossary, AA-RU5JB-TE
■HP StorageWorks C-FCSWAPI SDK Bridge Agent Installation Instructions,
AA-RVJ1A-TE/958-000405-000
CD-ROM directory structure
The HP StorageWorks edge switch documentation and firmware CD contains the
following items:
■Manuals.pdf—HP StorageWorks Edge Switch 2/12, Edge Switch 2/24,
and Edge Switch 2/32 Documentation; links to the following documents and
search function
■Documents
—README.TXT—HP document structure; late-breaking doc changes
— AA-RV14C-TE/958-000339-002—HP StorageWorks Edge Switch 2/12
Flexport Upgrade Instructions
— AA-RURCB-TE/958-000340-001—HP StorageWorks Edge Switch 2/12
Installation Guide
— AA-RURDB-TE—HP StorageWorks Edge Switch 2/12 Service Manual

About this document
6 HP StorageWorks Edge Switch release notes
— AA-RTDWC-TE/958-000283-002—HP StorageWorks Edge Switch 2/24
Installation Guide
— AA-RTDXC-TE—HP StorageWorks Edge Switch 2/24 Service Manual
— AA-RV1NA-TE—HP StorageWorks Edge Switch Element Manager User
Guide
— AA-RSTZD-TE/958-000290-002—HP StorageWorks Edge Switch 2/32
Installation Guide
— AA-RS2GD-TE—HP StorageWorks Edge Switch 2/32 Service Manual
— AA-RQ7AE-TE—HP StorageWorks CLI Reference Guide for Directors
and Edge Switches
— AA-RQ7BE-TE—HP StorageWorks SNMP Reference Guide for
Directors and Edge Switches
— AA-RS2DD-TE—HP StorageWorks SAN High Availability Planning
Guide
— AA-RMPNN-TE—HP StorageWorks SAN Design Guide
— AA-RS2CE-TE—HP StorageWorks HA-Fabric Manager User Guide
— AA-RV1MA-TE—HP StorageWorks HA-Fabric Manager Transition
Guide
— AA-RTDRC-TE—HP StorageWorks Embedded Web Server User Guide
— AA-RU5FB-TE/958-000324-001—HP StorageWorks HA-Fabric
Manager Appliance Installation Guide
— AA-RU5JB-TE—HP StorageWorks Director and Edge Switch Glossary
— AA-RVJ1A-TE/958-000405-000—HP StorageWorks C-FCSWAPI SDK
Bridge Agent Installation Instructions
■Firmware
—HPQ_HAF_v06.02.00-22.bin—HP StorageWorks M-Series
firmware
—HPQ_ES224_v05.03.01-01.bin—HP StorageWorks Edge Switch
2/24 downgrade firmware
—HPQ_ES212_v05.05.00-01.bin—HP StorageWorks Edge Switch
2/12 downgrade firmware
—firmwareupdate.txt—Instructions for updating firmware
■Acrobat

About this document
7HP StorageWorks Edge Switch release notes
—RP505ENU.EXE—Windows installation file for Acrobat Reader 5.0
with Search
Supported configurations
Operation of multiple switches in a fabric topology is subject to the following
topology limits. Consider the impact of these limits when planning the fabric.
Note: For more information about planning the fabric, refer to HP StorageWorks SAN
High Availability Planning Guide
.
■Fabric elements—Each fabric element is defined by a unique domain ID that
ranges between 1 and 31; therefore, the theoretical limit of interconnected
switches in a single fabric is 31. The supported limit of interconnected
switches in a single fabric is 24. Because this number is subject to change,
contact your HP authorized service representative for the current number of
interconnected switches supported in a single fabric.
■Inhomogeneous fabric—To determine if interoperability is supported for a
product, or if restrictions apply, refer to the product publications, or contact
your HP authorized service representative.
■Number of Interswitch Links (ISLs)—The maximum supported number of
ISLs for edge switches is all available switch ports. For redundancy, at least
two ISLs should connect any two switch-class fabric elements. Because this
number is subject to change, contact your HP authorized service
representative for the current number of ISLs supported per switch.
■Hop count—The Fibre Channel theoretical limit of ISL connections traversed
(hop count) in a single path through a fabric is seven. The maximum
supported hop count in a single path through a fabric is three. Because this
number is subject to change, contact your HP authorized service
representative for the current hop count supported by a single fabric path.
Note: The hop count is equal to the number of ISL connections traversed in a single
path, not the total number of ISL connections between devices.

About this document
8 HP StorageWorks Edge Switch release notes
Cable requirements
Note: Optical cables for the Edge Switch 2/12, Edge Switch 2/12, and Edge
Switch 2/32 must be ordered separately.
For cables measuring up to 500 meters (1 Gbps) or 300 meters (2 Gbps), use
multi-mode Fibre Channel cables. For longer cables, use single-mode Fibre
Channel cables.
Multi-mode optical cables are connected to short-wave optical transceiver
modules in a switch. Single-mode optical cables are connected to long-wave
optical transceiver modules in a switch. Multi-mode cables should use 50/125
optical fibers, and single-mode cables typically use 9/125 optical fibers for
distances up to 10 km.
Verify that connectors interfacing with the Edge Switch 2/12, Edge Switch 2/24,
and Edge Switch 2/32 use LC Duplex connectors with a PC finish. In addition, the
connector at the opposite end of the cable must be of either LC or SC type,
depending on the requirements of the connected device.
Important information
This section describes important information related to the Edge Switch 2/12,
Edge Switch 2/24, and Edge Switch 2/32.
HAFM and firmware compatibility
Table 1 lists the minimum version of HAFM that can run with the various versions
of firmware for the directors and edge switches.
Table 1: HAFM and firmware compatibility
Firmware version HAFM version (minimum)
01.01.02 04.00.01 (HP EFCM)
01.02.02-06 04.01.02-14 (SDCM)
01.03.00-35 04.02.00-40 (HP EFCM)
01.04.00-01 04.02.00-40 (SDCM)
02.00.00-33 06.00.00-45 (HP EFCM)
02.00.02-01 06.00.02-06
04.01.02-04 06.03.01-05

About this document
9HP StorageWorks Edge Switch release notes
Prerequisites for installing and using firmware 06.02.00
If you are using HAFM, firmware 06.02.00 requires HAFM 07.01.00 or later
(check with HP Customer Support for the latest shipping version of HAFM).
HAFM should be at the minimum level before installing the new firmware.
Note: HAFM is not required for operating hardware products using the firmware.
All directors and edge switches in the same fabric should have the same firmware
level installed. Although products may co-exist in a fabric running different levels
of firmware, all products must be at the same major functional release level.
Upgrading from an earlier version of firmware
Upgrading to firmware 06.02.00-22 is non-disruptive to attached devices. The
director or edge switch is not required to be offline before performing an upgrade
operation. Limitations to upgrades are clearly identified if there are any
limitations to performing the operation.
05.02.00-13 07.01.00-09 (Notebook Server)
05.02.00-13 07.02.00-09 (HAFM Appliance)
05.05.00-12 None (Edge Switch 2/12)
06.01.00-18 07.01.00-09 (Notebook Server)
06.01.00-18 07.02.00-09 (HAFM Appliance)
06.01.00-18 08.02.00 recommended (HAFM
Appliance)
06.02.00-22 07.01.00-09 (Notebook Server)
06.02.00-22 07.02.00-09 (HAFM Appliance)
06.02.00-22 08.02.00 recommended (HAFM
Appliance)
Table 1: HAFM and firmware compatibility (Continued)
Firmware version HAFM version (minimum)

About this document
10 HP StorageWorks Edge Switch release notes
Before upgrading firmware, it is highly recommended that you back up the
director or edge switch configuration. Refer to your HP StorageWorks Edge
Switch Element Manager User Guide for more information. Embedded Web
Server (EWS) also provides an option to print or save product configuration to a
file. Refer to the HP StorageWorks Embedded Web Server User Guide for more
information.
All products must be running firmware 05.00.00 or later before upgrading to
06.02.00-22. If a switch is operating with a firmware level earlier than 05.00.00,
you must upgrade to 05.xx.xx before installing 06.02.00-22.
Upgrades and downgrades are supported only from one major release to the next,
such as from 05.xx.xx to 06.02.00-22. If EWS is used for upgrades and
downgrades, and this rule is not followed, errors occur and there may be a
disruption to attached devices.
If upgrading to firmware 06.02.00-22 requires you to upgrade from 04.xx.xx to
05.xx.xx in the process, there are special considerations, as detailed in the section,
“Upgrading firmware on an edge switch from 04.xx.xx to 05.xx.xx” on page 10.
A small number of early-shipped Surestore Director FC-64 units may receive one
of the following messages when they upgrade to firmware 05.02.00-13:
■HAFM—Firmware cannot be loaded due to insufficient
CTP memory.
■EWS—File System Error: Insufficient memory for new
firmware version.
This occurs only in certain units with CTP cards. Units with CTP2 cards do not
have this issue.
If you get one of these messages during the upgrade, the firmware upgrade failed,
but the unit continues working with the existing firmware without an interruption
in service. The upgrade process checks for sufficient memory before activating the
new firmware image. The firmware upgrade does not complete without sufficient
memory. Please contact HP Customer Support if you receive this message.
Upgrading firmware on an edge switch from 04.xx.xx to 05.xx.xx
An issue has been identified in release 04.xx.xx if the contents of the nonvolatile
storage (NVRAM) on the CTP become corrupted. Once the configuration has
been loaded, this corruption is not detected until an IPL/IML, power cycle, or
firmware code load. If the NVRAM in the CTP has corrupted contents, the
firmware load can cause the configuration to reset to factory defaults, which could
cause a system outage.

About this document
11HP StorageWorks Edge Switch release notes
Edge switch products already running 05.01.00 or later continually validate the
NVRAM configuration, so risk of an outage is extremely low. For edge switch
products running an earlier version of firmware, the risk of an outage increases
due to the NVRAM issue. If an outage compromises system integrity, HP
recommends that the edge switch firmware upgrade be a scheduled maintenance
action that anticipates the failure of switch connectivity. This issue was corrected
with firmware 05.02.00-13 and later.
To safely upgrade firmware on a edge switch, perform the following:
1. Upgrade HAFM software on the HAFM server/appliance to 07.01.00
(minimum).
2. Download firmware 05.02.00-13 using the Firmware Library option under
the Product Manager Maintenance menu.
3. Back up the edge switch configuration using the Backup & Restore
Configuration option under the Product Manager Maintenance menu.
4. Upgrade the firmware to 05.02.00-13 on each edge switch using the Send
option on the Firmware Library dialog box.
Considerations for downgrading the version of firmware
Directors or edge switches are not required to be offline before performing a
firmware downgrade operation. Limitations to downgrades are clearly identified if
there are any limitations to performing the operation.
Before downgrading firmware, it is highly recommended that you back up the
director or edge switch configuration. Refer to your HP StorageWorks Edge
Switch Element Manager User Guide for more information. EWS also provides an
option to print or save product configuration to a file. Refer to your
HP StorageWorks Embedded Web Server User Guide for more information.
Downgrading directly to a release before 05.00.00 from 06.02.00-22 is not
allowed. To downgrade to a release before 05.00.00, you must first downgrade to
05.YY.ZZ.
Upgrades and downgrades are supported only from one major release to the next,
such as from 05.xx.xx to 06.02.00-22. If EWS is used for upgrades and
downgrades, and this rule is not followed, errors occur and there may be a
disruption to attached devices.

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12 HP StorageWorks Edge Switch release notes
Note: The Director 2/140 and the Edge Switch 2/24 cannot be downgraded earlier
than 04.01.00, and the Edge Switch 2/12 cannot be downgraded earlier than
05.05.00.
Downgrades directly to 05.03.01 from 06.xx.xx is not concurrent when the
second-generation Edge Switch 2/24 is configured in Open Fabric operating
mode. In other words, downgrades in Open Fabric mode cannot be done with the
second-generation Edge Switch 2/24 online without disrupting port operations.
Since second-generation Edge Switch 2/24 switches cannot be downgraded earlier
than 05.03.01, they must be configured in Homogeneous Fabric Interoperability
mode to remain concurrent. If this process is not followed, I/O through the switch
may be significantly disrupted or stopped. Recovery for this situation is
accomplished by reactivating the current zone set.
If you are installing a new or replacement second-generation Edge Switch 2/12 or
Edge Switch 2/24 into an existing 05.xx.xx fabric, HP recommends that you
downgrade the unit before installing it into the fabric.
Downgrading to 05.05.00 is supported only on first-generation Edge Switch 2/12
switches. Second-generation Edge Switch 2/12 switches can be downgraded only
to 05.05.01. Second-generation Edge Switch 2/24 switches can be downgraded
only to 05.03.01.
If a Director 2/140 in a multiswitch fabric is downgraded earlier than 06.02.00,
ISLs could become segmented if there are any other switches in the fabric
operating with an firmware version earlier than 06.01.00. To prevent this situation,
downgrade all Director 2/140s in the fabric to 06.01.00 before downgrading any
products in the fabric to 05.xx.xx. This problem only exists with Director 2/140s
in the fabric. HAFM displays a warning message if a downgrade from 06.02.00 is
attempted, but you can continue with the downgrade if desired.
Note: The warning message is displayed when downgrading any model from
06.02.00, but only applies to downgrade operations for the Director 2/140.
Firmware downgrades should not be performed using EWS and Internet Explorer
v5.00.3315.1000x. If this operation is performed, the download operation may not
complete and may eventually time-out leaving the switch with the previous
version of firmware.

About this document
13HP StorageWorks Edge Switch release notes
HAFM upgrade required for firmware version 06.xx.xx
To upgrade to firmware 06.xx.xx, you must first upgrade the HAFM software to
07.01.00-9 minimum, if you are using the notebook HAFM server to manage the
director or edge switch. The HAFM software is contained on the HP
StorageWorks ha-fabric manager documentation and software CD (Part Number
516-000024-820). An upgrade kit to HAFM 07.01.00-9 is also available, Part
Number 320908-B22, for owners of license for previous versions. This HAFM
upgrade is also available on the following HP web site:
http://h18006.www1.hp.com/storage/saninfrastructure.html .
If you are using the 1U rack-mount HAFM appliance to manage the director or
edge switch, the minimum HAFM version required is 07.02.00-9, which is the
minimum version installed. This HAFM software is contained on the HP
StorageWorks ha-fabric manager documentation and software CD (Part Number
516-000024-720).
The previous minimum versions of HAFM allow you to manage directors or edge
switches running 06.02.00-22 firmware, but to be able to use all the new features
and enhancements, you need to upgrade HAFM to 08.02.00, which runs only on
the 1U rack-mount HAFM appliance. The next major firmware release requires
the use of an HAFM version, which runs only on the HAFM appliance.
As an alternative, you can perform the firmware upgrade directly to the director or
edge switch using their EWS.
Please contact your local HP technical resource if you need to obtain a new
HAFM version.
Please contact your local HP technical resource to confirm compatibility with
devices in your SAN before upgrading to this firmware version.
For more information on upgrading software versions, refer to the HP
StorageWorks HA-Fabric Manager User Guide. The features of this software
version are detailed in the accompanying manuals listed in section “Other edge
switch documentation” on page 4.
Second-generation switch support
This release provides support for second-generation Edge Switch 2/12 and Edge
Switch 2/24 switches.

About this document
14 HP StorageWorks Edge Switch release notes
OSMS change
Open Systems Management Server (OSMS) is now available as a standard
feature. OSMS can be enabled/disabled via EWS, Command Line Interface (CLI),
and HAFM.
Default zone is disabled by default
The default zone on the Edge Switch 2/12, Edge Switch 2/24, and Edge
Switch 2/32 is disabled by default. Zoning must be configured in order for any
devices connected to the edge switches to communicate.
Some IP addresses must be avoided
If you use HAFM to manage other M-Series Fabric directors and edge switches,
when you select IP addresses for edge switches, directors, and for the HAFM
appliance, do not use IP addresses in the following range:
192.168.0.0 through 192.168.0.255—This subnet is used internally to the HAFM
appliance. Using an IP address in this range causes the call-home feature to
function incorrectly.
Hard zoning
Hard zoning is a security enhancement introduced in firmware 05.01.00-24 that
prevents ports from accessing devices outside their zones. Hard zoning is enabled
by default when using firmware 05.01.00-24 or greater and cannot be disabled.
All HP-approved host bus adapters (HBAs) limit access to devices within their
zones, so you will not see a change in fabric behavior unless you are using
nonstandard HBAs. Hard zoning improves security against intruders that load
nonstandard HBA drivers.
Hard zoning is compatible with legacy zone definitions, including World Wide
Name (WWN) and port zoning. You can use your existing zones and zone sets
without any changes. There are no changes to the zoning interfaces, so you do not
need to modify your zone management practice, modify your documentation, or
retrain Storage Area Network (SAN) administrators.
Hard zoning controls access at the ingress port. When a port attempts to send a
frame to a destination outside its zones, the frame is blocked. A Class 2 frame is
fabric rejected, and a Class 3 frame is dropped.

About this document
15HP StorageWorks Edge Switch release notes
Zoning change RSCN control
Normally, when a zone set is activated, a fabric format domain Register State
Change Notification (RSCN) is sent to all devices in the fabric. With firmware
05.00.00 or later, you can disable these RSCNs from being sent. This is done
using the Suppress RSCNs on zone set activations check box on the Configure
Switch Parameters dialog box.
This feature significantly changes the normal behavior of the fabric. Devices will
have no warning when zones change and will not automatically update their
zoning information. The ability to suppress RSCNs is disabled (check box is not
selected) by default. This feature can be configured through HAFM, EWS, and
CLI.
SNMP changes
Firmware 06.02.00-22 supports the following management information base
(MIB) versions on all products:
■Fabric Element MIB: 1.1
■MIB-II MIB: RFC-1213, non-implemented sections are not included
■FCEOS MIB: 2.0
■SNMP Framework MIB: RFC-2271 (1997/09/30)
■FA MIB: 3.0
■FA MIB: 3.1
SNMP requests can be received in either 3.0 or 3.1 of the Fibre Alliance (FA)
MIB, and the switch responds in the same version. The switch can also be
configured to use a specific version for traps generated by the switch.
Zoning limitations
With firmware 06.00.00 and later, you have the ability to configure large zone
sets, including up to 1024 zones and 1024 end ports in a single zone set. Table 2
shows the supported limits for the edge switches and directors.

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16 HP StorageWorks Edge Switch release notes
Table 2: Zoning parameters supported limits
Using the same firmware
All directors and edge switches in the same fabric should have the same firmware
level installed—whether 1 Gbps or 2 Gbps capable, this firmware operates
correctly.
The recently released Edge Switch 2/12 had an interim firmware specific for the
Edge Switch 2/12, 05.05.00-12. This firmware cannot be used for any other edge
switch or director. This interim version is compatible with the M-Series firmware
05.01.00-24 and 05.02.00-13 used for the rest of the M-Series fabric products. The
firmware 06.02.00-22 is a common firmware for all the M-Series fabric products,
including the Edge Switch 2/12.
Firmware 06.02.00-22 includes minor bug fixes, and provides support for
second-generation Edge Switch 2/12 and Edge Switch 2/24 switches. This is the
minimum M-Series firmware supported on the second-generation Edge
Switch 2/12 and Edge Switch 2/24.
Zoning parameter Maximum value
Number of zone members in a zone 2048
Number of zones in a zone set 1024
Number of unique zone members in a
zone set 2048
Total number of zone members in a
zone set (where a zone member can be
in multiple zones)
4096
Characters per zoning name 32
Number of unique zone members in
HAFM Zoning Library 2048
Number of zones in HAFM Zoning
Library 1024
Number of zone sets in HAFM Zoning
Library 64
Number of end ports 1024
Number of devices supported (including
loop devices) 1024

About this document
17HP StorageWorks Edge Switch release notes
For customers who want to add a second-generation switch to their existing SAN,
but are not ready to upgrade their SAN from 5.x to 06.02.00, there is a downgrade
firmware version for each of these edge switches which provides compatibility
with a SAN running 05.02.00.
Firmware 05.03.01-01 is available for the Edge Switch 2/24, and firmware
05.05.01-01 is available for the Edge Switch 2/12. These versions are installed
only on the Edge Switch 2/24 and Edge Switch 2/12, and only when these
switches are placed in a M-Series SAN running 05.02.00 firmware. A copy of
these versions of firmware, are contained on the HP StorageWorks edge switch
documentation and firmware CD (Part Number 524-000001-005).
Reinstalling feature licenses
Feature licenses (or keys) must be reinstalled after performing a factory reset on
an edge switch to regain use of the licensed features (e.g., SANtegrity Binding).
Disconnecting the null modem cable
Always log out and disconnect the null modem cable from the serial maintenance
port when not in use or when the switch is reset.
CTP controls port lights
Port lights on the edge switch and director products are controlled by the CTP
functionality. Certain activities such as firmware updates, IPLing the CTP, or
switching over to the backup CTP (director) can cause these port lights to
extinguish momentarily until control is reasserted by the CTP. The actual Fibre
Channel traffic is not affected during these times.
Ethernet switch support
With firmware 06.00.00 and later, customers can now connect the management
port on edge switches and directors to Ethernet switches or hubs. Prior to
firmware 06.00.00, only connections to Ethernet hubs were qualified and
supported.
Full Volatility
Full Volatility is an optional feature of firmware 06.00.00 and later that is enabled
with a feature key. The Full Volatility feature is designed to support high-security
environments, which require that customer data not be retained by the edge switch
or director after power off.

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18 HP StorageWorks Edge Switch release notes
The feature configures a switch or director so that no frame data is stored after a
power off. Without Full Volatility, if the switch or director experiences a fault
condition, a dump of the embedded memory space is captured into non-volatile
memory. This dump retains the last 30 frames transmitted from and last four
frames transmitted to the embedded port. With Full Volatility installed, this dump
does not occur when a fault condition occurs. Although this limits the amount of
diagnostic information available for potential problem resolution, the vast
majority of problems are typically resolved without the dump files.
Contact your sales representative to purchase a feature key for Full Volatility.
CLI threshold alerts
With firmware 06.00.00 and later, the CLI allows you to set and monitor
Throughput Threshold Alerts (TTAs).
CLI show.eventLog command
With firmware 06.00.00 and later, the CLI show.eventLog command has been
enhanced. The command now displays a link incident (LIN) log and event log.
MIHPTO value
With firmware 06.00.00 and later, the internal Missing Interrupt Handler Primary
Time Out (MIHPTO) value has been changed from 15 seconds to 3 minutes.
Route management—Preferred Path
Preferred Path can be configured using either CLI or HAFM 08.02.00.
Preferred Path allows you to influence the route of data traffic when it traverses
multiple switches or directors in a fabric. If more than one interswitch link (ISL)
connects switches in a fabric, you can specify an ISL preference for a particular
flow. The data path consists of the source port of the switch or director being
configured, the exit port of that switch or director, and the domain ID of the
destination switch or director. Each switch or director must be configured for its
part of the desired path to achieve optimal performance. You may need to
configure Preferred Paths for all switches or directors along the desired path for
proper multi-hop Preferred Path operation.
This feature allows use of the fabric shortest path first (FSPF) for any undefined or
erroneous path definitions and uses standard rerouting algorithms when errors in
the fabric occur. Thus if the defined route is not valid, the standard, automatically
generated route, is used.

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19HP StorageWorks Edge Switch release notes
When a Preferred Path is defined for all of the ports on a switch, it provides a
reasonable level of predictability because it isolates changes in routing only to the
ports affected by a particular “preferred path.” Thus, if the “preferred path” goes
away, only the ports assigned to the path are rerouted to other paths. Conversely, if
the “preferred path” is re-established, the ports assigned to the path are rerouted
back to the path.
The Preferred Path enhancement modifies the behavior of Open Trunking by
providing guidance for the balancing function. The paths are balanced according
to the Open Trunking guidelines after the Preferred Path selections have been
assigned. Thus, the Preferred Path selections are eliminated from the list of
candidates to be moved off of a flow.
The Preferred Path configuration allows you to assign the exit port assignment,
but is subject to the standard rules regarding the FSPF protocol. Thus, if the
indicated path is not a least-cost route, the FSPF algorithm takes precedence.
Likewise, any port that does not have a Preferred Path definition is subject to the
static load-balance rules. And finally, a Preferred Path is not excluded from the
FSPF path selection operation for undefined or recovered paths.
Note: Activating a new Preferred Path will cause a reroute to occur if the Preferred Path
is different from the current path. In congested environments, with traffic on the current
path, a reroute can cause an out-of-order frame (OOOF) at the destination device.
Reroutes are a natural activity in any Fibre Channel fabric when the network is
modified. For example, reroutes occur when ISLs are added or lost or when new
switches are added to the fabric. Fibre Channel devices are designed to handle errors
such as OOOFs, but some devices send error messages. In FICON environments, an
IFCC error can result from an OOOF. To avoid these error messages, vary devices s
offline before a Preferred Path is activated, and then return the devices to online status
afterwards.
EWS enhancements
With firmware 06.00.00 and later, EWS enhancements include support for
managing the SANtegrity Binding feature and Enterprise Fabric Mode, and
providing the Link Incident (LIN) log and the Open Trunking log.

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20 HP StorageWorks Edge Switch release notes
Full-fabric capability for Edge Switch 2/12
Unlike other edge switch and director products, a product feature enablement
(PFE) key, controls Edge Switch 2/12 E_Port-to-E_Port connections. Once the
feature key is purchased and installed, the switch can be configured for E_Port
connections on any of the active ports.
The feature key includes distance support. With firmware 06.00.00 and later, the
Edge Switch 2/12 ships standard with five buffer-to-buffer (BB) credits allocated
to each port. After activation of the Full Fabric feature on a switch, every port has
12 BB Credits allocated to support up to 12 km links at 2Gb/s speeds.
Hard zoning for Edge Switch 2/12 and Edge Switch 2/24 switch loop ports
Firmware 06.00.00 and later extends Hard Zoning to loop (FL) ports on Edge
Switch 2/12 and Edge Switch 2/24. Previously, zoning on FL ports was regulated
in software.