.Part 4 SAN Extension and Bridging HP SAN Design Reference Guide 785354-001

Figure 88 Basic WDM configuration using one long-distance fiber optic link
WDM
connection
25144a
Fabric 1
Local
Fabric 1
Remote
Fabric 2
Local
Fabric 2
Remote
The configuration in Figure 88 (page 264) is low cost, but has no long-distance link redundancy.
Figure 89 Fully redundant WDM configuration using two long-distance fiber optic links
WDM
connection
WDM
connection
25145b
Fabric A1
Local
Fabric A1
Remote
Fabric B1
Local
Fabric B1
Remote
The configuration in Figure 89 (page 264) is high cost, but is fully redundant.
HP supports the following third-party WDM products and configurations:
• CWDM and DWDM systems supported by the switch vendors.
• WDM devices that are configurable to a data rate of 1 Gb/s, 2 Gb/s, 4 Gb/s, 8 Gb/s, or
10 Gb/s
• Up to 500 km at 1 Gb/s, over a WDM link (switch model dependent). On certain Fibre
Channel switches, there may be reduced performance at this distance. See “Storage product
interface, switches, and transport distance rules” (page 156).
• Performance levels depend on the number of buffers available in the switch and the amount
of application data.
For information about HP-certified third-party WDM products, see “Certified third-party WDM,
iFCP, and SONET products” (page 317).
Extended fabric settings for Fibre Channel switches
When extending fabrics with Fibre Channel long-distance transceivers or WDM, it is important to
maintain the performance of ISL connections. For information about the B-series Extended Fabrics
license, see “Features” (page 95).
B-series switch settings
An Extended Fabrics license is required for B-series switches when extending a fabric beyond 10
km.
For B-series extended fabric switch settings, see the HP StorageWorks Fabric OS Administrator's
Guide, available at http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?
contentType=SupportManual&lang=en&cc=us&docIndexId=179111&taskId=101&
prodTypeId=12169&prodSeriesId=1143936.
NOTE: The HP C-series CWDM solution is not supported on B-series switches. For B-series
supported WDM devices, see “Certified third-party WDM products” (page 317).
264 SAN extension