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Domain ID, principal priority, and domain ID lock, Common topologies

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Domain ID, principal priority, and domain ID lock The following switch configuration settings affect multiple switch fabrics: • Domain ID • Principal priority • Domain ID lock The domain ID is a unique number from 1-239 that identifies each switch in a fabric. The principal priority is a number (1-255) that determines the principal switch which manages domain ID assignments for the fabric. The switch with the highest principal priority (1 is high, 255 is low) becomes the principal switch. If the principal priority is the same for all switches in a fabric, the switch with the lowest Worldwide Name (WWN) becomes the principal switch. The domain ID lock allows (False) or prevents (True) the reassignment of the domain ID on that switch. Switches come from the factory with the domain ID set to 1, the domain ID lock set to False, and the principal priority set to 254. For information about changing the default domain ID, domain ID lock, and principal priority parameters, see the set config switch command in the HP StorageWorks 8/20q Fibre Channel Switch Command Line Interface Guide. If you connect a new switch to an existing fabric with its domain ID unlocked, and a domain ID conflict occurs, the new switch will isolate as a separate fabric. You can remedy this by resetting the new switch or taking it offline then putting it back online. The principal switch will reassign the domain ID and the switch will join the fabric. NOTE: Domain ID reassignment is not reflected in zoning that is defined by domain ID/port number pair or Fibre Channel address. You must reconfigure zones that are affected by domain ID reassignment. To prevent zoning definitions from becoming invalid under these conditions, lock the domain IDs. Domain ID reassignment has no effect on zone members defined by WWN. Common topologies For additional information about Storage Area Network (SAN) connectivity, see the SAN design reference guide available at the HP website: http://www.hp.com/go/SANdesignguide. 22

Section	Page
Contents	3
About this guide	7
Intended audience	7
Related documentation	7
Document conventions and symbols	8
Table 1 Document conventions	8
Rack stability	9
HP technical support	9
Customer self repair	9
Product warranties	9
Subscription service	9
HP web sites	10
Documentation feedback	10
General description	11
Figure 1 8/20q Fibre Channel Switch	11
Switch LEDs and controls	12
Figure 2 Switch LEDs and controls	12
Input power LED (green)	12
Heartbeat LED (green)	12
System fault LED (amber)	12
Maintenance button	13
Resetting a switch	13
Placing the switch in maintenance mode	13
Fibre Channel ports	14
Figure 3 Fibre Channel ports	14
Port LEDs	14
Figure 4 Port LEDs	14
Port Logged-in LED (green)	14
Port Activity LED (green)	15
Transceivers	15
Port types	15
Table 2 Fibre Channel port types	15
Ethernet port	16
Figure 5 Ethernet port	16
Serial port	16
Figure 6 Serial port and pin identification	16
Table 3 Serial port pin identification	17
Power supply and fans	17
Switch management	17
QuickTools web applet	18
Simple SAN Connection Manager	18
Command line interface	18
Simple Network Management Protocol	18
Storage Management Initiative–Specification (SMI-S)	18
File transfer protocols	18
Planning	19
Devices	19
Device access	19
Table 4 Zoning database limits	20
Performance	20
Distance	20
Bandwidth	20
Latency	21
Table 5 Port-to-port latency	21
Feature licenses	21
Multiple switch fabrics	21
Optimizing device performance	21
Domain ID, principal priority, and domain ID lock	22
Common topologies	22
Transparent routing	23
Switch services	24
Security	26
User account security	26
IP security	26
Port binding	26
Connection security	26
Device security	27
Fabric management	28
Installation	29
Site requirements	29
Management Station and Workstation requirements	29
Table 6 Management station requirements for Simple SAN Connection Manager	29
Table 7 Workstation requirements for QuickTools	30
Switch power requirements	30
Environmental conditions	30
Installing a switch	30
Mount the switch	31
Before you begin	31
Collect the required items	32
Verify the kit contents	32
Table 8 8/20q Fibre Channel Switch rack mount kit hardware	32
Rack the switch	33
Figure 7 Attaching the rails to the switch	33
Figure 8 Installing the rear mounting brackets	33
Figure 9 Installing the switch and rail assembly	33
Figure 10 Fastening the rail to the front of the rack	34
Figure 11 Fastening the rail to the rear mounting bracket	34
Figure 12 Installing the filler panel	34
Install the transceivers	35
Configure the workstation	35
Configuring the workstation IP address for Ethernet connections	35
Configuring the workstation serial port	35
Apply power to the switch	36
Connect the management station or workstation to the switch	37
Figure 13 Management station and workstation cable connections	37
Configure the switch	37
Simple SAN Connection Manager switch configuration	37
QuickTools switch configuration	37
CLI switch configuration	38
Cable devices to the switch	38
Installing firmware	38
Using QuickTools to install firmware	39
Using the CLI to install firmware	39
One-step firmware installation	40
Custom firmware installation	41
Adding a switch to an existing fabric	41
Installing feature license keys	42
Configuring Call Home to HP Services (optional)	42
Role of the Remote Support Software Manager	42
Role of OSEM and versions required	42
Installation instructions and documentation for SIM, RSP, OSEM, and ISEE	43
RSP requirements for the CMS	43
Infrastructure requirements for implementing Call Home to HP Services	44
Configuring Call Home to HP services	44
Diagnostics and troubleshooting	47
Switch diagnostics	47
Figure 14 Switch LEDs	47
Input power LED is extinguished	47
System fault LED is illuminated	48
Power-On self test diagnostics	48
Heartbeat LED blink patterns	48
Internal firmware failure blink pattern	48
Fatal POST error blink pattern	49
Configuration file system error blink pattern	49
Over-temperature blink pattern	49
Logged-in LED indications	50
Figure 15 Logged-in LED	50
E_Port isolation	50
Excessive port errors	51
Transceiver diagnostics	52
Recovering a switch using maintenance mode	53
Exiting the maintenance menu (option 0)	53
Unpacking a firmware image file in maintenance mode (option 1)	54
Resetting the network configuration in maintenance mode (option 2)	54
Resetting user accounts in maintenance mode (option 3)	54
Copying log files in maintenance mode (option 4)	54
Removing the switch configuration in maintenance mode (option 5)	54
Remaking the file system in maintenance mode (option 6)	54
Resetting the switch in maintenance mode (option 7)	55
Updating the boot loader in maintenance mode (option 8)	55
Regulatory compliance and safety	57
Regulatory compliance	57
Federal Communications Commission notice for Class A equipment	57
Cables	57
Laser device	57
Laser safety warning	57
Certification and classification information	58
Laser product label	58
Figure 16 Class 1 laser product label	58
International notices and statements	58
Canadian notice (avis Canadien)	58
European Union regulatory notice	59
Japanese notice	59
Korean notice	59
Taiwan notice	59
Electrostatic discharge	61
How to prevent electrostatic discharge	61
Grounding methods	61
Technical specifications	63
General specifications	63
Table 9 General specifications	63
Maintainability features	64
Table 10 Maintainability features	64
Fabric management specifications	65
Table 11 Fabric management specifications	65
Weight and physical dimensions	65
Table 12 Switch physical dimensions	65
Electrical specifications	65
Table 13 Electrical specifications	65
Environmental requirements	66
Table 14 Environmental requirements	66
Factory configuration defaults	67
Factory switch configuration	67
Table 15 Switch configuration defaults	67
Factory port configuration	68
Table 16 Port configuration defaults	68
Factory port threshold alarm configuration	69
Table 17 Port threshold alarm configuration defaults	69
Factory zoning configuration	69
Table 18 Zoning configuration defaults	69
Factory SNMP configuration	70
Table 19 SNMP configuration defaults	70
Factory switch services configuration	70
Table 20 Services configuration defaults	70
Factory DNS host name configuration	71
Table 21 DNS host name configuration defaults	71
Factory IP version 4 Ethernet configuration	71
Table 22 IP version 4 Ethernet configuration defaults	71
Factory IP version 6 Ethernet configuration	71
Table 23 IP version 6 Ethernet configuration defaults	71
Factory event logging configuration	72
Table 24 Event logging configuration defaults	72
Factory NTP server configuration	72
Table 25 NTP server configuration defaults	72
Factory timer configuration	72
Table 26 Timer configuration defaults	72
Factory RADIUS configuration	73
Table 27 RADIUS configuration defaults	73
Factory security configuration	73
Table 28 Security configuration defaults	73
Factory Call Home configuration	74
Table 29 Call Home service configuration defaults	74
Glossary	75
Index	79
Numerics	79
A	79
B	79
C	79
D	79
E	79
F	79
G	80
H	80
I	80
L	80
M	80
N	80
O	80
P	80
Q	81
R	81
S	81
T	81
U	81
V	81
W	81

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Domain ID, principal priority, and domain ID lock

The following switch configuration settings affect multiple switch fabrics:

•

Domain ID

•

Principal priority

•

Domain ID lock

The domain ID is a unique number from 1–239 that identifies each switch in a fabric. The principal priority

is a number (1–255) that determines the principal switch which manages domain ID assignments for the

fabric. The switch with the highest principal priority (1 is high, 255 is low) becomes the principal switch. If

the principal priority is the same for all switches in a fabric, the switch with the lowest Worldwide Name

(WWN) becomes the principal switch.

The domain ID lock allows (False) or prevents (True) the reassignment of the domain ID on that switch.

Switches come from the factory with the domain ID set to 1, the domain ID lock set to False, and the

principal priority set to 254. For information about changing the default domain ID, domain ID lock, and

principal priority parameters, see the

set config switch

command in the

HP StorageWorks 8/20q

Fibre Channel Switch Command Line Interface Guide

If you connect a new switch to an existing fabric with its domain ID unlocked, and a domain ID conflict

occurs, the new switch will isolate as a separate fabric. You can remedy this by resetting the new switch or

taking it offline then putting it back online. The principal switch will reassign the domain ID and the switch

will join the fabric.

NOTE:

Domain ID reassignment is not reflected in zoning that is defined by domain ID/port number pair

or Fibre Channel address. You must reconfigure zones that are affected by domain ID reassignment. To

prevent zoning definitions from becoming invalid under these conditions, lock the domain IDs. Domain ID

reassignment has no effect on zone members defined by WWN.

Common topologies

For additional information about Storage Area Network (SAN) connectivity, see the

SAN design reference

guide

available at the HP website:

http://www.hp.com/go/SANdesignguide