Configuring An Extended Isl - HP AA979A - StorageWorks SAN Switch 2/8V Administrator's Manual

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 (FC4-32 blades)
Speed
(Gbit/sec)
1
2
4
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- 1 5). 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 4/256 SAN Director (B-Series MP Router blades)
Speed
(Gbit/sec)
1
2
4

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.
330 Administering Extended Fabrics
Number of Ports Allowed at Distance (km)
10 km 25 km
32 ports 32 ports
32 ports 32 ports
32 ports up to 26
ports
Number of ports allowed at distance (km)
10 km 25 km
16 ports 16 ports
16 ports 16 ports
16 ports 16 ports
50 km 100 km
32 ports up to 26
ports
up to 26 up to 12
ports ports
up to 12 up to 6
ports ports
Table 77.
50 km 100 km
16 ports up to 26
ports
8 ports up to 12
ports
up to 12 4 ports
ports
Table 76.
250 km 500 km
up to 10 up to 4
ports ports
up to 4 0
ports
0 0
250 km 500 km
6 ports 2 ports
2 ports N/A
N/A N/A