HP StorageWorks Fabric OS 6.x administrator guide (5697-7344, March 2008)

Fabric OS 6.x administrator guide 371
Table 82 lists the extended ISL modes for switches with Bloom-based ASICs. You can configure extended
ISL modes with the portCfgLongDistance command when the Extended Fabrics license is activated.
Table 82 Extended ISL modes: B-Series 2Gb Switches (Bloom and Bloom II ASICs)
Mode Buffer allocation Distance @ 1
Gbps
Distance @ 2
Gbps
Earliest
Fabric OS
release
Extended
Fabrics
license
required?
1 Gbps 2 Gbps
L0 5 (26)
1
1. For each data channel (in this case, there are 4) there are 5 credits, plus 6 extra credits.
5 (26) 10 km 5 km All No
LE 13 19 n/a 10 km 3.x, 4.x No
LD
2
2. The dynamic long-distance mode (LD) automatically configures the number of buffer credits required,
based on the actual link distance.
Auto Auto Auto
Maximum is 200 km
Auto
Maximum is 100
km
3.1.0, 4.1.0,
4.4.0, 5.x
(depending on
the model)
Yes
LS
3
3. The static long-distance mode (LS) allocates the number of buffer credits based on the user-specified
distance.
Based on
user-spec
ified
distance
Based on
user-spec
ified
distance
Based on
user-specified
distance
Maximum is 200 km
Based on
user-specified
distance
Maximum is 100
km
5.1.0 Yes