Specifications

Introduction
Fibre Channel Card Dependencies
1-9
FC/SCSI E_Port to E_Port
When an UltraNet Edge 3000 is configured for E_port, its peer UltraNet Edge 3000 must also be
configured as E_port.
FC/SCSI F_port Configurations
F_port is a port in the fabric where an N_port can attach. F_ports are frame routing ports, which are
insensitive to higher level protocols. A port configured for F_port can only connect to another
N_port via a point-to-point connection.
The UltraNet Edge 3000 contains an application which acts as a Fibre Channel switch (FCSW) and
eliminates the need for an external Fibre Channel switch. When the UltraNet Edge 3000 is
configured for use with the FCSW application, it is configured for F_port.
The UltraNet Edge 3000 offers the standard F_port configuration and F_port Disk Streaming which
moves data more efficiently in high latency networks than our standard F_port solution. F_port
Disk Streaming functions as a subset of our Fibre Channel Device Extension technology. A
significant performance gain is normally achieved in networks which limit the number of
concurrent SCSI I/O operations and also in networks with high latency.
IP or ATM WANs are supported with F_port configurations.
FC/SCSI F_Port to F_Port
When an UltraNet Edge 3000 is configured for F_port, its peer UltraNet Edge 3000 must also be
configured as F_port.
FC/SCSI N_port Configurations
N_port is a node port, or a port on a disk or computer. Ports that are N_port can only communicate
with another N_port on another node, or to a switch. NL_port is a Node Loop Port; a port
supporting the Arbitrated Loop protocol.
When running Tape Pipelining (Device Extension) on the UltraNet Edge 3000, it will be
configured for N_port or NL_port. Refer to Chapter 9, Tape Pipelining, in the UltraNet Edge
Storage Router - 3000 Series User Guide for more information.