HP StorageWorks 4000/6000/8000 - Enterprise Virtual Arrays, Reference Manual

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Table 141 describes the appropriate port protocol setting based on the WDM system architecture.
Table 141 Port protocol setting based on the extension architecture
B-series port protocol setting WDM system architecture
portCfgISLMode
slot/port, 1
Active protocol handling ( Table 140 )
portCfgISLMode
slot/port, 0 Passive protocol handling
NOTE:
The
portCfgISLMode
and
portCfgLongDistance
L0.5, L1, or L2 mode cannot be enabled at
the same time; otherwise, fabric segmentation occurs. The
portCfgISLMode
and
portCfgLongDistance
mode LE, LD, or LS can be enabled at the same time.
B-series trunking and WDM
Consider the following when using B-series trunking with WDM:
• Trunking with WDM is supported only at 2 Gb/s or 4 Gb/s (1 Gb/s is not supported).
• Trunking de-skew timers can accommodate a maximum difference of 400 m (de-skew value of
200) between the shortest and longest ISLs in a trunk.
• Trunking distance rules are listed in the HP StorageWorks Fabric OS administrator guide .
• Trunking is not supported with ports configured for portCfgMode slot/port, 1 (R_RDY mode).
C-series switch settings
Table 142 lists the C-series switch extended fabric settings for maintaining performance with extended
fabric links.
Table 142 C-series switch extended fabric settings
Setting Extended fabric item
C-series switches support up to 4095 BB_credits. See Table 191 on page 387
for detailed information.
Supported switch models
7 Maximum number of hops
See Table 80 , Table 81 , and Table 82 in “ SAN fabric connectivity and switch
interoperability rules ” on page 167 for detailed information about distance rules
for long-wave transceivers.
Maximum segment distance
Consider the following when using C-series switches with extended fabric links:
• The MDS 9216i and 14/2 Multiprotocol Services Modules can allocate up to 3,500 BB_credits
to an individual port.
• The MDS 9222i Multiservice Fabric and 18/4 Multiservice Modules can allocate up to 4,095
BB_credits to an individual port.
• 4 Gb/s and 10 Gb/s Fibre Channel Switching Modules can allocate up to 4,095 BB_credits to
an individual port.
• Each port on the 16-port line card supports 255 BB_credits. These credits are available on a
nl
per-port basis through a single link or a link combined with a port channel.
SAN extension 288