HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.2.x administrator guide (569 - Page 326

Choosing an Extended ISL mode, Table 67 Extended ISL modes: switches with Bloom and Bloom II ASICs

Page 326 highlights

versions earlier than v4.0.2 and v3.0.2c, make sure that VC translation link initialization is disabled because these versions do not support it. Choosing an Extended ISL mode Table 67 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 67 Extended ISL modes: switches with Bloom and Bloom II ASICs Mode Description Buffer allocation 1 2 Gbit/sec Gbit/sec Distance @ 1 Gbit/sec L0 Level 0 static 5 (26)1 5 (26) 10 km mode, the default. LE Level E static 13 19 n/a mode, supports links beyond 5 km. L0.5 Level 0.5 static 19 34 25 km mode (designated LM when listed with the portcfgshow command). L1 Level 1 static 27 54 50 km mode. L2 Level 2 static 60 mode. 65 108 for Bloom II 100 km LD2 Dynamic mode Auto uses automatic distance detection for a user-specified distance. Auto Auto (Maximum is 200 km) LS3 Static long Based on Based on Based on distance mode user-spec user-spec user-specified that uses the ified ified distance user-specified link distance. distance distance (Maximum is 200 km) Distance @ 2 Gbit/sec 5 km 10 km 25 km 50 km 60 km 100 km for Bloom II Auto (Maximum is 100 km) Based on user-specified distance (Maximum is 100 km) Earliest Fabric OS release All Extended fabrics license required? No v3.x, v4.x No v3.1.0, v4.1.0, Yes v4.x, 5.x All Yes All Yes v3.1.0, v4.1.0, Yes v4.4.0, 5.x (depending on the model) 5.1.x Yes 1. For each data channel (in this case, there are 4) there are 5 credits, plus 6 extra credits. 2. The dynamic long-distance mode (LD) automatically configures the number of buffer credits required, based on the actual link distance. 3. The static long-distance mode (LS) allocates the number of buffer credits based on the user-specified distance. 326 Administering Extended Fabrics

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326
Administering Extended Fabrics
versions earlier than v4.0.2 and v3.0.2c, make sure that VC translation link initialization is disabled
because these versions do not support it.
Choosing an Extended ISL mode
Table 67
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 67
Extended ISL modes: switches with Bloom and Bloom II ASICs
Mode
Description
Buffer allocation
Distance @ 1
Gbit/sec
Distance @ 2
Gbit/sec
Earliest Fabric
OS release
Extended
fabrics
license
required?
1
Gbit/sec
2
Gbit/sec
L0
Level 0 static
mode, the default.
5 (26)
1
5 (26)
10 km
5 km
All
No
LE
Level E static
mode, supports
links beyond 5
km.
13
19
n/a
10 km
v3.x, v4.x
No
L0.5
Level 0.5 static
mode (designated
LM when listed
with the
portcfgshow
command).
19
34
25 km
25 km
v3.1.0, v4.1.0,
v4.x, 5.x
Yes
L1
Level 1 static
mode.
27
54
50 km
50 km
All
Yes
L2
Level 2 static
mode.
60
65
108 for
Bloom II
100 km
60 km
100 km for
Bloom II
All
Yes
LD
2
Dynamic mode
uses automatic
distance detection
for a
user-specified
distance.
Auto
Auto
Auto
(Maximum is
200 km)
Auto
(Maximum is
100 km)
v3.1.0, v4.1.0,
v4.4.0, 5.x
(depending on
the model)
Yes
LS
3
Static long
distance mode
that uses the
user-specified link
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.x
Yes
1.
For each data channel (in this case, there are 4) there are 5 credits, plus 6 extra credits.
2.
The dynamic long-distance mode (LD) automatically configures the number of buffer credits required, based on the actual link distance.
3.
The static long-distance mode (LS) allocates the number of buffer credits based on the user-specified distance.