Installation guide

3 – Planning
Device Access
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Device Access
Consider device access needs within the FC and iSCSI SANs. Access to an FC
device is controlled by mapping FC device to specific iSCSI initiators. FC devices
may be mapped to more than one initiator. Giving multiple initiators access to an
FC device requires access management.
Fibre Channel
The Fibre Channel ports automatically discover all FC target devices, whether
connected directly (loop) or by fabric (switch).
iSCSI
When an iSCSI initiator logs on, the router records the initiator’s iSCSI name and
IP address. The management interface (command line interface [CLI] or
SANsurfer Router Manager) uses the initiator’s information to simplify the
mapping process.
FC Performance
The iSR6142 router supports Fibre Channel service at transmission rates of 1
Gbps or 2 Gbps with a maximum frame size of 2148 bytes. It supports Ethernet
service at transmission rates of 1000-, 100- or 10-Mbps with a maximum
transmission unit (MTU) size of 1500 or 9000 (jumbo frames).
Related performance characteristics include the following:
 Distance (see page 3-3)
 Bandwidth (see page 3-3)
 Latency (see page 3-3)
NOTE:
An MTU size greater than 1500 should only be used when the router is
connected to a 1000 Mbps Ethernet network.