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Using the HP Remote Switch feature

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C Using the HP Remote Switch feature The HP Remote Switch feature (Remote Switch), which aids in ensuring gateway compatibility, was formerly a licensed feature. Its functionality is now available as part of the Fabric OS standard feature set through the use of the portCfgIslMode command, which is described in "Linking through a gateway" on page 33. Remote Switch, enables you to connect two remote HP StorageWorks switches over an IP network, enabling communication of IP or ATM protocols as well as Fibre Channel traffic. The Remote Switch functions with the aid of a bridging device or Fibre Channel gateway. The gateway supports both a Fibre Channel physical interface and a secondary, non-Fibre Channel physical interface, such as IP, SONET, or ATM. Remote Switch functions over E_Port connections. With Remote Switch on both fabrics, the gateway accepts Fibre Channel frames from one fabric, tunnels them across the network, and passes them to the other fabric. From the viewpoint of the connected hosts and storage devices, fabrics using Remote Switch interact the same as locally connected switches. Remote Switch provides many of the same capabilities of normal ISL links including the following: • Coordinated fabric services: The Remote Switch fabric configuration fully supports all fabric services, including distributed name service, RSCN, and alias service. • Distributed management: Management tools, such as Advanced Web Tools, Fabric OS, and SNMP are available from both the local switch and the remote switch. Switch management is routed through the Fibre Channel connection; thus, no additional network connection is required between sites. • Support for ISLs: Sites requiring redundant configurations can connect multiple E_Ports to remote sites by using multiple gateways. Standard Fabric OS routing facilities maximize throughput and provide failover during interruption on the wide area network (WAN) connection. The Remote Switch feature operates with a gateway. The gateway provides an E_Port interface that links to the E_Port. After the link between the two E_Ports has been negotiated, the gateway E_Port moves to passthrough mode and passes Fibre Channel traffic from the E_Port to the WAN. The gateway accepts Fibre Channel frames from one side of a Remote Switch fabric, transfers them across a WAN, and passes them to the other side of the Remote Switch fabric. Remote Switch can be used for these types of gateway devices: • Fibre Channel over ATM • Fibre Channel over IP • Fibre Channel over SONET • Fibre Channel over DWDM Most of these gateway devices have enough buffers to cover data transfer over a WAN. The HP StorageWorks switches on each side of the gateway must have identical configurations. Only qualified SFPs should be used. You must connect the fabrics through the gateway device, and make sure that the configure parameters are compatible with the gateway device. You might be required to reconfigure the following parameters, depending on the gateway requirements: NOTE: Consult your gateway vendor for supported and qualified configurations. • R_A_TOV: Specify a Resource Allocation Timeout Value compatible with your gateway device. • E_D_TOV: Specify an Error Detect Timeout Value compatible with your gateway device • Data field size: Specify the maximum Fibre Channel data field reported by the fabric. Verify the maximum data field size the network-bridge can handle. Some bridges might not be able to handle a maximum data field size of 2112. • BB credit: Specify the number of Buffer-to-Buffer credits for Nx_Port devices. Fabric OS 5.x administrator guide 231

Section	Page
Contents	3
Intended audience	13
Related documentation	13
HP StorageWorks Fabric OS 5.x master glossary	13
Document conventions and symbols	14
Table 1 Document conventions	14
HP technical support	14
HP-authorized reseller	15
Helpful web sites	15
Introducing Fabric OS CLI procedures	17
About procedural differences	17
Scope and references	17
About the CLI	18
Help information	18
Displaying command help	18
Additional help topics	19
Performing basic configuration tasks	21
Connecting to the Command Line Interface	21
Setting the IP address	22
Setting the default account passwords	22
Table 2 Maximum number of simultaneous sessions	22
Setting the date and time	24
Table 3 Conversion from UTC to local time	26
Maintaining licensed features	26
Customizing the switch name	28
Customizing the chassis name	29
Disabling and enabling a switch	29
Disabling and enabling a port	30
Activating Ports on Demand	30
Making basic connections	31
Connecting to devices	31
Connecting to other switches	31
Working with domain IDs	32
Linking through a gateway	33
Checking status	34
Tracking and controlling switch changes	35
Configuring standard security features	39
Secure protocols	39
Table 4 Secure protocol support	39
Table 5 Items needed to deploy secure protocols	39
Table 6 Main security scenarios	40
Ensuring network security	40
Configuring the telnet interface	41
Blocking listeners	42
Table 7 Blocked listener applications	42
Accessing switches and fabrics	42
Table 8 Access defaults	42
Creating and maintaining user-defined accounts	43
Changing an account password	45
Setting up RADIUS AAA service	45
Configuring the RADIUS server	46
Configuring the switch	50
Enabling and disabling local authentication	52
Configuring for the SSL protocol	52
Browser and Java support	53
Summary of SSL procedures	53
Table 9 SSL certificate files	53
Choosing a CA	54
Generating a public/private key	54
Generating and storing a CSR	54
Obtaining certificates	55
Installing a switch certificate	55
Activating a switch certificate	56
Configuring the browser	56
Installing a root certificate to the Java Plug-in	57
Displaying and deleting certificates	57
Table 10 Commands to display and delete SSL certificates	57
Troubleshooting certificates	58
Table 11 SSL messages and actions	58
Configuring SNMP agent and traps	58
Setting the security level	59
Using the snmpConfig command	59
Using legacy commands for SNMPv1	62
Configuring secure file copy	67
Setting the boot PROM password	67
Without a recovery string	69
Recovering forgotten passwords	71
Maintaining configurations and firmware	73
Maintaining configurations	73
Displaying configuration settings	73
Backing up a configuration	73
Restoring a configuration	74
Restoring configurations in a FICON environment	75
Table 12 Backup and restore in a FICON CUP environment	75
Downloading configurations across a fabric	76
Printing hard copies of switch information	76
Maintaining firmware	76
Obtaining and unzipping firmware	76
Checking connected switches	77
Table 13 Recommended firmware	78
About the download process	78
Table 14 Effects of firmware changes on accounts and passwords	79
Upgrading HP StorageWorks switches	79
Upgrading HP StorageWorks directors	82
Troubleshooting firmware downloads	85
Configuring Core Switch 2/64, SAN Director 2/128, and 4/256 SAN Director	87
Identifying ports	87
By slot and port number	87
By port area ID	88
Basic blade management	88
Powering port blades off and on	88
Disabling and enabling port blades	89
Conserving power	89
Blade terminology and compatibility	89
Table 15 HP StorageWorks director terminology and abbreviations	90
CP blades	90
Port blade compatibility	91
Table 16 Blades supported by each HP StorageWorks director	91
Setting chassis configurations	91
Table 17 Supported configuration options	91
Obtaining slot information	92
Configuring a new SAN Director 2/128 with two domains	93
Converting an installed SAN Director 2/128 to support two domains	94
Setting the blade beacon mode	95
Routing traffic	97
About data routing and routing policies	97
Specifying the routing policy	97
Assigning a static route	98
Specifying frame order delivery	98
Using DLS	99
Viewing routing path information	100
Viewing routing information along a path	102
Administering FICON fabrics	105
FICON overview	105
Table 18 Fabric OS commands related to FICON and FICON CUP	107
Configuring switches	108
Preparing a switch	108
Configuring a single switch	108
Configuring a high-integrity fabric	109
Figure 1 Cascaded configuration with two switches	109
Figure 2 Cascaded configuration with three switches	109
Setting a unique domain ID	109
Displaying information	110
Link incidents	110
Registered listeners	110
Node identification data	110
FRU failures	111
Swapping ports	111
Clearing the FICON management database	111
Using FICON CUP	111
Setup summary	112
Enabling and disabling FMS mode	112
Displaying the fmsmode setting	113
Displaying mode register bit settings	113
Table 19 FICON CUP mode register bits	114
Setting mode register bits	114
Persistently enabling and disabling ports	115
Port and switch naming standards	116
Adding and removing FICON CUP licenses	116
Zoning and PDCM considerations	116
Backing up and restoring configurations	116
Troubleshooting	116
Identifying ports	117
Backing up FICON files	118
Recording configuration information	118
Figure 3 FICON switch configuration worksheet	119
Configuring the Distributed Management Server	123
Enabling and disabling the platform services	123
Controlling access	124
Configuring the server database	126
Controlling topology discovery	127
Working with diagnostic features	129
Viewing POST	129
Viewing switch status	130
Viewing port information	132
Table 20 Port error summary description	134
Viewing equipment status	135
Viewing the system message log	136
Viewing the port log	137
Table 21 Commands for port log management	137
Configuring for syslogd	138
Configuring the host	138
Table 22 Fabric OS and UNIX message severities	138
Configuring the switch	139
Viewing and saving diagnostic information	140
Setting up automatic trace dump transfers	140
Troubleshooting	143
Most common problem areas	143
Table 23 Common troubleshooting problems and tools	143
Gathering information for technical support	144
Troubleshooting questions	144
Analyzing connection problems	145
Restoring a segmented fabric	148
Correcting zoning setup issues	149
Table 24 Types of zone discrepancies	149
Table 25 Commands for debugging zoning	150
Recognizing MQ errors	151
Correcting I2C bus errors	151
Correcting device login issues	152
Identifying media-related issues	155
Table 26 Component test descriptions	156
Table 27 Switch component tests	157
Correcting link failures	157
Table 28 Switchshow output and suggested action	159
Correcting marginal links	159
Table 29 Loopback modes	160
Inaccurate information in the system message log	161
Port initialization and FCP auto-discovery process	161
Administering extended fabrics	163
About extended link buffer allocation	163
SAN Switch 2/8V, SAN Switch 2/16V, and SAN Switch 2/32, Core Switch 2/64, SAN Director 2/128, and 4/256 SAN Director (FC2-16 port blades)	163
Brocade 4Gb SAN Switch for HP p-Class BladeSystem, SAN Switch 4/32, and 4/256 SAN Director (FC4-16 and FC4-32 port blades)	163
Fabric considerations	163
Choosing an extended ISL mode	164
Table 30 Extended ISL modes: switches with Bloom ASIC	164
Table 31 Extended ISL modes: switches with Goldeneye ASIC	164
Table 32 Extended ISL modes: switches with Condor ASIC.	165
Configuring an extended ISL	165
Trunking over distance	166
Administering ISL trunking	167
About ISL trunking	167
Figure 4 Distribution of traffic over ISL trunking groups	167
Standard trunking criteria	168
Fabric considerations	168
Initializing trunking on ports	169
Monitoring traffic	169
Enabling and disabling ISL trunking	171
Setting port speeds	171
Displaying trunking information	173
Trunking over extended fabrics	173
Troubleshooting trunking problems	174
Listing link characteristics	174
Recognizing buffer underallocation	174
Administering advanced zoning	177
Zoning terminology	177
Figure 5 Zoning example	177
Zoning concepts	178
Zone types	178
Table 33 Types of zoning	178
Table 34 Approaches to fabric-based zoning	179
Zone objects	179
Zone aliases	180
Zone configurations	180
Zoning enforcement	181
Table 35 Enforcing hardware zoning	182
Figure 6 Hardware-enforced non-overlap ping zones	183
Figure 7 Hardware-enforced overlapping zones	183
Figure 8 Zoning with hardware assist (mixed-port and WWN zones)	184
Figure 9 Session-based hard zoning	184
Rules for configuring zones	184
Creating and managing zone aliases	185
Creating and maintaining zones	187
Table 36 Resulting database size: 0 to 96K	189
Table 37 Resulting database size: 96K to 128K	189
Table 38 Resulting database size: 128K to 256K	190
Table 39 Resulting database size: 256K to 1M	190
Creating and modifying zoning configurations	190
Maintaining zone objects	193
Managing zoning configurations in a fabric	195
Table 40 Zoning database limitations	195
Adding a new switch or fabric	195
Splitting a fabric	197
Using zoning to administer security	197
Resolving zone conflicts	197
Table 41 Considerations for zoning architecture	198
Administering advanced performance monitoring	199
Table 42 Advanced performance monitoring commands	199
Displaying and clearing the CRC error count	200
Monitoring EE performance	201
Adding EE monitors	201
Figure 10 Setting EE monitors on a port	202
Figure 11 Proper placement of EE performance monitors	202
Setting a mask for EE monitors	202
Figure 12 Mask positions for EE monitors	203
Deleting EE monitors	204
Monitoring filter-based performance	204
Adding standard filter-based monitors	205
Table 43 Commands to add filter-based monitors	205
Adding custom filter-based monitors	205
Table 44 Predefined values at offset 0	206
Monitoring ISL performance	207
Monitoring trunks	207
Displaying monitor counters	207
Clearing monitor counters	209
Saving and restoring monitor configurations	211
Collecting performance data	211
Configuring the PID format	213
About PIDs and PID binding	213
Summary of PID formats	213
Impact of changing the fabric PID format	213
Host reboots	214
Static PID mapping errors	214
Changes to configuration data	214
Table 45 Effects of PID format changes on configurations	215
Selecting a PID format	215
Table 46 PID format recommendations for adding new switches	216
Evaluating the fabric	216
Planning the update procedure	218
Online update	218
Offline update	218
Hybrid update	219
Changing to Core PID format	219
Changing to Extended Edge PID format	220
Table 47 Earliest Fabric OS versions for Extended Edge PID format	220
Converting port number to area ID	222
Figure 13 4/256 SAN Director with Extended Edge PID	223
PID format changes	224
Executing the basic procedure	224
Executing the HP-UX procedure	225
Executing the AIX procedure	227
Swapping port area IDs	227
Configuring interoperability mode	229
Using the HP Remote Switch feature	231
Understanding legacy password behavior	233
Password management information	233
Table 48 Account and password characteristics matrix	233
Password prompting behaviors	234
Table 49 Password prompting matrix	234
Password migration during firmware changes	235
Table 50 Password migration behavior during firmware upgrade and downgrade	235
Password recovery options	236
Table 51 Password recovery options	236
Zone merging scenarios	237
Table 52 Zone merging scenarios	237
Upgrading firmware in single-CP mode	239
Index	243
A	243
B	243
C	243
D	244
E	244
F	244
G	245
H	245
I	245
J	245
K	245
L	245
M	245
N	245
O	245
P	245
R	246
S	246
T	247
U	247
V	247
W	247

Match case Limit results 1 per page

Fabric OS 5.x administrator guide

231

Using the HP Remote Switch feature

The HP Remote Switch feature (Remote Switch), which aids in ensuring gateway compatibility, was

formerly a licensed feature. Its functionality is now available as part of the Fabric OS standard feature set

through the use of the

portCfgIslMode

command, which is described in ”

Linking through a gateway

”

on page 33.

Remote Switch, enables you to connect two remote HP StorageWorks switches over an IP network,

enabling communication of IP or ATM protocols as well as Fibre Channel traffic.

The Remote Switch functions with the aid of a bridging device or Fibre Channel gateway. The gateway

supports both a Fibre Channel physical interface and a secondary, non-Fibre Channel physical interface,

such as IP, SONET, or ATM. Remote Switch functions over E_Port connections. With Remote Switch on

both fabrics, the gateway accepts Fibre Channel frames from one fabric, tunnels them across the network,

and passes them to the other fabric. From the viewpoint of the connected hosts and storage devices,

fabrics using Remote Switch interact the same as locally connected switches.

Remote Switch provides many of the same capabilities of normal ISL links including the following:

•

Coordinated fabric services: The Remote Switch fabric configuration fully supports all fabric services,

including distributed name service, RSCN, and alias service.

•

Distributed management: Management tools, such as Advanced Web Tools, Fabric OS, and SNMP

are available from both the local switch and the remote switch. Switch management is routed through

the Fibre Channel connection; thus, no additional network connection is required between sites.

•

Support for ISLs: Sites requiring redundant configurations can connect multiple E_Ports to remote sites

by using multiple gateways. Standard Fabric OS routing facilities maximize throughput and provide

failover during interruption on the wide area network (WAN) connection.

The Remote Switch feature operates with a gateway. The gateway provides an E_Port interface that links

to the E_Port. After the link between the two E_Ports has been negotiated, the gateway E_Port moves to

passthrough mode and passes Fibre Channel traffic from the E_Port to the WAN.

The gateway accepts Fibre Channel frames from one side of a Remote Switch fabric, transfers them

across a WAN, and passes them to the other side of the Remote Switch fabric.

Remote Switch can be used for these types of gateway devices:

•

Fibre Channel over ATM

•

Fibre Channel over IP

•

Fibre Channel over SONET

•

Fibre Channel over DWDM

Most of these gateway devices have enough buffers to cover data transfer over a WAN. The HP

StorageWorks switches on each side of the gateway must have identical configurations. Only qualified

SFPs should be used.

You must connect the fabrics through the gateway device, and make sure that the

configure

parameters are compatible with the gateway device.

You might be required to reconfigure the following parameters, depending on the gateway requirements:

NOTE:

Consult your gateway vendor for supported and qualified configurations.

•

R_A_TOV: Specify a Resource Allocation Timeout Value compatible with your gateway device.

•

E_D_TOV: Specify an Error Detect Timeout Value compatible with your gateway device

•

Data field size: Specify the maximum Fibre Channel data field reported by the fabric. Verify the

maximum data field size the network-bridge can handle. Some bridges might not be able to handle a

maximum data field size of 2112.

•

BB credit: Specify the number of Buffer-to-Buffer credits for Nx_Port devices.