Fabric OS 6.2 administrator guide 441
On the HP StorageWorks 4/8 and 4/16 SAN Switches, HP StorageWorks 8/8 and 8/24 SAN Switches,
HP StorageWorks SAN Switch 4/32 HP StorageWorks 4/256 SAN Director, HP StorageWorks 4/64
SAN Switch, HP StorageWorks 8/40 SAN Switch, and HP StorageWorks 8/80 SAN Switch, for
long-distance ports, you should specify the port speed instead of setting it to autonegotiate.
Support for 8 Gb/s is between the HP StorageWorks 4/256 SAN Director and the HP StorageWorks DC
SAN Backbone Director enterprise-class platform or between HP StorageWorks DC SAN Backbone
Director-to-HP StorageWorks DC SAN Backbone Director enterprise-class platforms with the appropriate
blades, the HP StorageWorks 8/40 SAN Switch, HP StorageWorks 8/80 SAN Switch, and HP
StorageWorks 8/8 and 8/24 SAN Switches, and the 8 Gb/s supported SFPs installed. The HP
StorageWorks 8/8 and 8/24 SAN Switches, HP StorageWorks 8/40 SAN Switch, and HP StorageWorks
8/80 SAN Switch, support long-distance modes L0, LE, LS, and LD. The distance supported on each
platform depends on the available buffers, number of back-end ports, and number of offline ports.
The distance supported on the HP StorageWorks DC04 SAN Director Switch depends on the available
buffers, number of back-end ports, and the number of ports that are offline.
You can set the port speed for one port or for an entire switch. Trunked ports must be set to the same
speed.
1. Connect to the switch and log in using an account assigned to the admin role.
Table 84 long-distance mode definitions
Long-distance
mode
Distance Comments
L0 Normal Normal mode. More than one
data Virtual Channel is used. All
other modes use one data Virtual
Channel.
LE Up to 10 km Reserves the buffers for 10 km.
LS Static The distance statically specified
by you.
LD Auto distance detect Reserves buffers for distance
specified in the CLI. Fabric OS
6.2.0 supports up to 500 km at
1G up to 250 km at 2G, and
100 km at 4G and 8G.
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