HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, November 2009)

Fabric OS 5.3.0 administrator guide 353
Extended ISL modes for switches that integrate the Bloom ASIC
Table 75 lists the extended ISL modes for switches that have a Bloom ASIC. You can configure extended ISL
modes with the portCfgLongDistance command when the Extended Fabrics license is activated.
Table 75 Extended ISL modes: 3xxx 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 v3.x, v4.x No
L0.5
2
2. This mode is supported but cannot be configured on switches running Fabric OS v5.2.0 and later.
19 34 25 km 25 km v3.1.0, v4.1.0,
v4.x, v5.x
Yes
L1
2
27 54 50 km 50 km All Yes
L2
2
60 65
108 for
Bloom II
100 km 60 km
100 km for Bloom
II
All Yes
LD
3
3. 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
v3.1.0, v4.1.0,
v4.4.0, v5.x
(depending on
the model)
Yes
LS
4
4. The static long-distance mode (LS) allocates the number of buffer credits based on the user-specified distance.
Based on
user-speci
fied
distance
Based on
user-speci
fied
distance
Based on
user-specified distance
Maximum is 200 km
Based on
user-specified
distance
Maximum is 100
km
v5.1.0 Yes