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HP StorageWorks MSA 2/8 HP StorageWorks ISL Trunking V3.1.x/4.1.x User Guide ( - Page 14

Overview, dynamically across the merged ISLs at the Fibre Channel frame level while

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Introducing ISL Trunking Overview ISL Trunking allows the formation of trunking groups that distribute traffic across the shared bandwidth of all the Interswitch Links (ISLs) in the trunking group. ISL Trunking is an optionally licensed product provided on the Fabric Operating System (FOS) on all HP StorageWorks 2 Gbps switches. The ISL Trunking feature optimizes network performance by allowing up to four ISL connections between two switches to merge logically into a single link. This enables traffic to be routed through any available ISL in the group rather than be restricted to a specific, potentially congested ISL. ISL Trunking distributes traffic dynamically across the merged ISLs at the Fibre Channel frame level while preserving in-order delivery of the frames. ISL Trunking is compatible with both short wavelength (SWL) and long wavelength (LWL) fiber optic cables and transceivers. 14 ISL Trunking Version 3.1.x/4.1.x User Guide

Section	Page
Contents	3
About this Guide	7
Overview	8
Intended Audience	8
Related Documentation	8
Conventions	9
Document Conventions	9
Table 1: Document Conventions	9
Text Symbols	9
Getting Help	11
HP Technical Support	11
HP Storage Website	11
HP Authorized Reseller	11
Introducing ISL Trunking	13
Overview	14
How ISL Trunking Works	15
Figure 1: Distribution of traffic over an ISL Trunking group	15
Routing of Traffic	15
Trunking Groups	16
Trunking ISLs	16
Trunking Ports	16
Figure 2: Port groupings on a SAN Switch 2/8 EL	17
Figure 3: Quad and port groupings on a SAN Switch 2/16	17
Figure 4: Quad and port groupings on a SAN Switch 2/32	18
Figure 5: Port groupings on the port card on a Core Switch 2/64	19
Activating ISL Trunking	21
Overview	22
License Activation	23
Verifying Activated Licenses	23
Activating the License	23
Setting Up ISL Trunking in a Fabric	25
Overview	26
Designing the Fabric to Optimize Use of ISL Trunking	27
Evaluating Data Traffic Patterns	29
Using the CLI to Gather Traffic Data	29
Using Performance Monitoring to Gather Traffic Data	30
Using Fabric Watch to Gather Traffic Data	30
Managing ISL Trunking	31
Overview	32
Enabling and Disabling Trunking	33
Enabling and Disabling Trunking Using the CLI	33
Enabling and Disabling Trunking Using Web Tools	34
Figure 6: Port Setting tab	35
Specifying Port Speeds	36
Setting Port Speeds Using the CLI	36
Setting Port Speeds Using Web Tools	37
Displaying Trunking Information	39
Displaying Trunking Information Using the CLI	39
Displaying Trunking Information Using Web Tools	40
Figure 7: Trunk Information tab	41
Troubleshooting	42
Debugging a Trunking ISL Failure	42
Interpreting ISL Trunking Error Messages	43
Warning BLOOM-TRNK_MSTR_DWN...	43
Warning BLOOM-TRNK_SLV_DWN...	43
Frequently Asked Questions About ISL Trunking	45
Table 2: Frequently Asked Questions about ISL Trunking	45
ISL Trunking Commands	47
Command List	48
Table 3: Fabric OS Commands Related to ISL Trunking	48
portcfgspeed	48
Syntax	48
Availability	48
Description	48
Operands	49
Example	49
See Also	49
portcfgtrunkport	50
Syntax	50
Availability	50
Description	50
Operands	50
Example	50
See Also	51
switchcfgspeed	51
Syntax	51
Availability	51
Description	51
Operands	51
Example	52
See Also	52
switchcfgtrunk	52
Syntax	52
Availability	52
Description	52
Operands	53
Example	53
See Also	53
trunkdebug	53
Syntax	53
Availability	53
Description	53
Operands	54
Example	54
See Also	55
trunkshow	56
Syntax	56
Availability	56
Description	56
Operands	56
Example	57
See Also	57
Glossary	59
Index	91
A	91
C	91
D	91
E	91
F	91
G	91
H	91
I	91
L	92
M	92
P	92
R	92
S	92
T	92
U	92