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Configuring Open Trunking, Open Trunking

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Configuring the Product Configuring Open Trunking The Open Trunking page enables you to configure open trunking settings. Open Trunking is an optional software feature that is enabled using a feature key. The purpose of Open Trunking is to make efficient use of redundant interswitch links (ISLs) between neighboring switches by means of load balancing. ISLs are fiber optic cables that connect ports between Fibre Channel switches and link these switches into a multiswitch fabric. Fibre Channel traffic flows through these ISLs from end devices (servers and storage devices) attached to ports on individual switches. When the traffic on a particular port exceeds a specified threshold, the Open Trunking functionality routes some of the traffic to another ISL. This prevents traffic from becoming congested on an ISL. Open trunking provides automatic, dynamic, statistical traffic load balancing across ISLs in a fabric environment. The Open Trunking feature monitors Fibre Channel data rates through multiple ISLs, dynamically applies a fibre shortest path first (FSPF) networking algorithm to calculate the optimum path between fabric elements, and balances the Fibre Channel traffic load accordingly. The objective is to make the most efficient possible use of redundant ISLs between neighboring switches, even if these ISLs have different bandwidths. The Open Trunking feature monitors the average data rates of all traffic flows (from a transmit port to a destination domain), and periodically adjusts routing tables to reroute data flows from congested links to lightly loaded links and optimizes bandwidth use. Load-balancing among the ISLs does not require user configuration, other than enabling open trunking and selecting optional or default settings for congestion thresholds (per port) and a response threshold for lack of BB_Credits. In particular, you do not need to manually configure ISLs into trunk groups of redundant links where data can be off-loaded. Candidate links for rerouting flow are identified automatically and maintained by the FSPF protocol. All ISLs that lead to adjacent switches on the shortest path to the flow's destination are considered. This means that even if a link is not on the shortest path to the destination, the flow may be rerouted to this link to relieve congestion. This also means that flow may be rerouted onto a link that goes to a different adjacent switch. Embedded Web Server User Guide 49

Section	Page
Contents	3
About this Guide	9
Overview	10
Intended Audience	10
Related Documentation	10
Conventions	11
Document Conventions	11
Table 1: Document Conventions	11
Text Symbols	12
Equipment Symbols	12
Rack Stability	13
Getting Help	14
HP Technical Support	14
HP Storage Website	14
HP Authorized Reseller	15
Introduction	17
Overview	17
Using EWS to Perform Tasks	17
Viewing the User Interface	19
Figure 1: Example Embedded Web Server page for Edge Switch 2/24	19
Benefits	20
Key Terms	21
Fabric	21
Storage Area Network (SAN)	22
Zone (Zoning)	22
Zone Member	22
Zone Set	22
Suggested Reading	22
Where to Start	23
Starting EWS	23
Figure 2: Enter Network Password dialog box	24
Figure 3: Switch Tab View	24
Configuring the Product	25
Factory Default Values	26
Configuring Ports	26
Figure 4: Configure Ports tab view	27
Configuring Product Identification	29
Figure 5: Configure product Identification tab view	29
Configuring Date and Time	31
Figure 6: Configure date and time tab view	31
Configuring Operating Parameters	32
Figure 7: Configure product parameters tab view	32
Configuring Fabric Parameters	35
Figure 8: Fabric Parameters tab view	35
Configuring Network Information	38
Figure 9: Configuring network parameters tab view	38
Figure 10: Network information message box	39
Configuring SNMP	40
Figure 11: Configure SNMP parameters tab view	40
Enabling or Disabling the CLI	42
Figure 12: Disabling the CLI	42
Enabling or Disabling Host Control	43
Figure 13: Enabling OSMS host control	43
Zoning Tab View	44
Configuring User Rights	44
Figure 14: Configuring user IDs	44
User Rights Settings	46
Table 2: User Rights Levels	46
Binding Ports to Devices	47
Figure 15: Configuring Port Binding	48
Configuring Open Trunking	49
Figure 16: Configuring Open Trunking	50
Installing Feature Keys	52
Figure 17: Feature Installation tab view	53
Configuring Zones	55
Understanding Zoning	55
Controlling Access Across a Fabric	55
Figure 18: Zoning through a single Fibre Channel managed product	56
Figure 19: Zoning through a multiswitch fabric	57
Controlling Access at the Switch	58
Controlling Access at the Server or Storage Device	58
Zoning Concepts	59
Naming Conventions for Zones and Zone Sets	60
Zones	60
Using WWNs	60
Using Port Numbers	61
Default Zone	62
Zone Sets	62
Active Zone Set	63
Merging Zoned Fabrics	63
Rules for Merging Zoned Fabrics	64
Table 3: Merging Zones	64
Configuring, Adding, or Deleting Zones	65
Figure 20: Configuring zones	66
Figure 21: Modify Zone tab view	67
Configuring Zone Sets	69
Figure 22: Zone Set tab view	69
Viewing Product and Fabric Data	71
Viewing Product Information	72
Viewing a Representation of the Product	72
Figure 23: Switch tab view for an Edge Switch 2/24	72
Table 4: State Definitions	73
Table 5: Status Indicators	74
Viewing Port Properties	75
Figure 24: Port Properties tab view	75
Viewing FRU Properties	79
Figure 25: FRU Properties tab view	79
Viewing Unit Properties	80
Figure 26: Unit Properties tab view	80
Viewing Operating Parameters for the Product	81
Figure 27: Operating Parameters tab view	81
Viewing Fabric Information	82
Viewing Operating Parameters for a Fabric	83
Viewing Fabric Directors and Switches	83
Figure 28: Fabric tab with Products tab view	84
Parts of the Product Cell	85
Product Cell Information	85
Table 6: Information on the Product Cell	85
Parts of the Product Graphic	86
Table 7: Operating Status Symbols	87
Viewing Fabric Topology	88
Figure 29: Fabric tab with Topology tab view	88
Table 8: Components of the Topology Page	89
Monitoring Products	91
Monitoring Ports	91
Port List	91
Figure 30: Port List tab view	92
Port Operational States	92
Accessing Port Statistics	94
Figure 31: Port Statistics tab view	94
Troubleshooting Tip for Port Stats	94
Parts of Statistics Tables	95
Traffic Transmit and Receive Statistics	95
Class 2 Statistics	96
Class 3 Statistics	96
Error Statistics	97
Open Trunking Statistics	98
Reviewing the Event Log	98
Figure 32: Log tab view	98
Severity Levels	99
Error Event Code Categories	99
Clearing Event Log Entries	100
Clearing the System (Product) Error Light	100
Viewing Node List	100
Figure 33: Node List tab view	100
Operating and Managing Products and Parts	103
Key Tasks	103
Setting Product Beaconing On or Off	104
Figure 34: Setting product beaconing	104
Setting Product Online or Offline	105
Figure 35: Setting product online or offline	105
Resetting Product Configuration to Default Values	106
Figure 36: Resetting product to default values	106
Set Individual Port Beaconing On or Off	107
Figure 37: Setting individual port beaconing on or off	108
Resetting Ports	109
Figure 38: Resetting ports	109
Performing Diagnostics on Ports	110
Figure 39: Performing diagnostics on ports	110
Figure 40: Diagnostics test in progress	111
Figure 41: Completed diagnostics test	112
Retrieving Maintenance Information	112
Figure 42: Retrieving the CTP maintenance information	113
Figure 43: Choosing the location to save the CTP maintenance information	113
Obtaining Product Information	114
Figure 44: Obtaining product information	114
Upgrading Firmware	115
Figure 45: Upgrading firmware	115
Activating (Installing) Optional Features	116
Error Messages	117
Table 9: Embedded Web Serve Messages	117
Index	139
A	139
B	139
C	139
D	140
E	140
F	141
G	141
H	141
I	142
K	142
L	142
M	142
N	142
O	142
P	143
R	144
S	144
T	145
U	145
V	145
W	145

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Configuring the Product

Embedded Web Server User Guide

Configuring Open Trunking

The

Open Trunking

page enables you to configure open trunking settings. Open

Trunking is an optional software feature that is enabled using a feature key.

The purpose of Open Trunking is to make efficient use of redundant interswitch

links (ISLs) between neighboring switches by means of load balancing. ISLs are

fiber optic cables that connect ports between Fibre Channel switches and link

these switches into a multiswitch fabric. Fibre Channel traffic flows through these

ISLs from end devices (servers and storage devices) attached to ports on

individual switches.

When the traffic on a particular port exceeds a specified threshold, the Open

Trunking functionality routes some of the traffic to another ISL. This prevents

traffic from becoming congested on an ISL. Open trunking provides automatic,

dynamic, statistical traffic load balancing across ISLs in a fabric environment.

The Open Trunking feature monitors Fibre Channel data rates through multiple

ISLs, dynamically applies a fibre shortest path first (FSPF) networking algorithm

to calculate the optimum path between fabric elements, and balances the Fibre

Channel traffic load accordingly. The objective is to make the most efficient

possible use of redundant ISLs between neighboring switches, even if these ISLs

have different bandwidths.

The Open Trunking feature monitors the average data rates of all traffic flows

(from a transmit port to a destination domain), and periodically adjusts routing

tables to reroute data flows from congested links to lightly loaded links and

optimizes bandwidth use.

Load-balancing among the ISLs does not require user configuration, other than

enabling open trunking and selecting optional or default settings for congestion

thresholds (per port) and a response threshold for lack of BB_Credits. In

particular, you do not need to manually configure ISLs into trunk groups of

redundant links where data can be off-loaded.

Candidate links for rerouting flow are identified automatically and maintained by

the FSPF protocol. All ISLs that lead to adjacent switches on the shortest path to

the flow’s destination are considered. This means that even if a link is not on the

shortest path to the destination, the flow may be rerouted to this link to relieve

congestion. This also means that flow may be rerouted onto a link that goes to a

different adjacent switch.