HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual page 342

Extended isl modes for 4/8 or 4/16 SAN Switches (Goldeneye ASIC)
Table 76 lists the extended ISL modes for the 4/8 SAN Switch or 4/16 SAN Switch, (Goldeneye ASIC).
Table 76 4/8 SAN Switch or 4/16 SAN Switch extended ISL modes (Goldeneye ASIC)
Mode Buffer allocation
1
1 Gbps 2 Gbps
a
L0 3(17) 3(17)
LE 1 1 16
2
L0.5 18 31
2
L1 31 56
2
L2 56 106
3
LD Auto Auto
4
LS Based on Based on
user-speci user-speci
fied fied
distance distance
1. For each data channel (in this case there are 4) there are 3 credits, plus 5 extra credits.
2. This mode is supported but cannot be configured on switches running Fabric OS v5.2.0 and later.
3. The dynamic long-distance mode (LD) automatically configures the number of buffer credits required, based on the actual link distance.
4. The static long-distance mode (LS) allocates the number of buffer credits based on the user-specified distance.
354 Administering Extended Fabrics
Distance @ 1
Gbps
4 Gbps
3(17) 6 km
26 10 km
56 25 km
106 50 km
n/a 100 km
Auto Auto
Based on Based on
user-speci user-specified
fied distance
distance
Maximum is 293
km.
Distance @ 2 Distance @ 4
Gbps Gbps
3 km 1.5 km
10 km 10 km
25 km 25 km
50 km 50 km
100 km n/a
Auto Auto
Based on Based on
user-specified user-specified
distance distance
Maximum is 146 Maximum is 73
km. km.
Earliest Extended
Fabric OS Fabrics
release license
required?
All No
v3.x, v4.x No
v5.1.0 Yes
v5.1.0 Yes
v5.1.0 Yes
v5.1.0 Yes
v5.1.0 Yes