Data Center Fabric Manager Professional Plus User Manual - Supporting DCFM 10.3.x (53-1001356-01, October 2009)

DCFM Professional Plus User Manual 349
53-1001356-01
Virtual Port Types
12
Consider the constraints described in Table 36 when configuring tunnels to use OSTP.
Virtual Port Types
Virtual ports may be defined as VE_Ports.
VE_Ports
VE_Ports (virtual E_Ports) are used to create interswitch links (ISLs) through an FCIP tunnel. If
VE_Ports are used on both ends of an FCIP tunnel, the fabrics connected by the tunnel are
merged.
TABLE 36
FCIP Fastwrite Tape Acceleration
Each GbE port supports up to 2048 simultaneous
accelerated exchanges, which means a total of 2048
simultaneous exchanges combined for Fastwrite and
Tape Acceleration.
Each GbE port supports up to 2048 simultaneous
accelerated exchanges, which means a total of 2048
simultaneous exchanges combined for Fastwrite and
Tape Acceleration.
Does not natively support multiple equal-cost path
configurations. Traffic isolation zoning can be used to
support these configurations.
Does not natively support multiple equal-cost path
configurations or multiple non-equal-cost path
configurations. . Traffic isolation zoning can be used to
support these configurations.
Class 3 traffic is accelerated with Fastwrite. Class 3 traffic is accelerated between host and
sequential device.
With sequential devices (tape drives), there are 1024
initiator-tape (IT) pairs per GbE port, but 2048
initiator-tape-LUN (ITL) pairs per GbE port. The ITL pairs
are shared among the IT pairs. For example:
Two ITL pairs for each IT pair as long as the target has
two LUNs.
If a target has 32 LUNs, 32 ITL pairs for IT pairs. In this
case, only 64 IT pairs are associated with ITL pairs.
The rest of the IT pairs are not associated to any ITL
pairs, so no Tape Acceleration is performed for those
pairs. By default, only Fastwrite-based acceleration is
performed on the unassociated pairs.
Does not support multiple non-equal-cost path
between host and sequential device