HP StorageWorks Fabric OS 5.2.x administrator guide (5697-0014, November 2009)
330 Administering Extended Fabrics
4/256 SAN Director (FC4-32 port blades)
The number of ports that can be configured at various distances is summarized in Table 76.
4/256 SAN Director (B-Series MP Router blades)
For the B-Series MP Router blade, long distance settings are applicable only to the physical FC_Ports (ports
0-15). Long distance settings are not applicable to virtual FC_Ports (ports 16-31). The number of ports that
can be configured at various distances is summarized in Table 77.
Configuring an extended ISL
Before configuring the ISL, ensure that the following conditions are met:
• Extended ISL support for HP StorageWorks 1 GB switches is limited as follows:
• Extended ISLs are not supported between HP StorageWorks 1 GB switches.
• To support extended ISLs between HP StorageWorks 1 GB switches, the
fabric.ops.mode.longDistance parameter must be set to 1 on all switches in the fabric.
Each switch must be disabled before setting this parameter.
• For fabrics that contain a mix of switch models, the fabric.ops.mode.longDistance parameter
must be set to 0 (the default). Under certain circumstances (for example, if you want extended distance
between Bloom-based switches) this mode needs to be enabled (set to 1) on switches running Fabric
OS v3.x or v4.x. Talk to your switch provider for details.
• The ports on both ends of the ISL must have the same configuration.
• Use only qualified SFPs.
Table 76 4/256 SAN Director (FC4-32 blades)
Speed
(Gbit/sec)
Number of Ports Allowed at Distance (km)
10 km 25 km 50 km 100 km 250 km 500 km
1 32 ports 32 ports 32 ports up to 26
ports
up to 10
ports
up to 4
ports
2 32 ports 32 ports up to 26
ports
up to 12
ports
up to 4
ports
0
4 32 ports up to 26
ports
up to 12
ports
up to 6
ports
00
Table 77 4/256 SAN Director (B-Series MP Router blades)
Speed
(Gbit/sec)
Number of ports allowed at distance (km)
10 km 25 km 50 km 100 km 250 km 500 km
1 16 ports 16 ports 16 ports up to 26
ports
6 ports 2 ports
2 16 ports 16 ports 8 ports up to 12
ports
2 ports N/A
4 16 ports 16 ports up to 12
ports
4 ports N/A N/A