Internal ports:
14 internal full-duplex 8 Gb FC ports
Internal ports operate as F_ports (fabric ports) on the FC3171 8Gb SAN Switch
Internal ports operate as TH_Ports (transparent host ports) on the FC3171 8Gb SAN Pass-thru
Two internal full-duplex 1 GbE ports connected to the chassis management module
External ports:
Six external ports for 8 Gb SFP+ transceivers supporting 4 Gb and 8 Gb port speeds (SFP+ modules are not included and must be purchased separately - see Table 2)
External ports can operate as F_ports (fabric ports), FL_ports (fabric loop ports), or E_ports (expansion ports) on the FC3171 8Gb SAN Switch
External ports operate as TF_Ports (Transparent Fabric Ports) on the FC3171 8Gb SAN Pass-thru
One external 100 Mb Fast Ethernet (100BASE-TX) port with RJ-45 connector for switch configuration and management
One RS-232 serial port (mini-USB connector) that provides an additional means to configure the switch module
Transparent (N_Port ID Virtualization - NPIV) mode support
Power-on self-test diagnostics and status reporting
Support for Non-Disruptive Code Load Activation (NDCLA)
Registered State Change Notification (RSCN):
The switch supports RSCN as described in FC-FLA. RSCN enables an agent to register for change events in the fabric and attached devices.

Support for standards-based FC-SW2 interoperability
Error detection:
Cyclic redundancy check (CRC)
8-byte and 10-byte conversion
Parity
Long frame and short frame
D_ID mismatch
S_ID mismatch
Frame bundling:
No frame bundling (frames are intermixed from different source ports)
Soft lockdown (the I/O module waits for the sequence to be completed or a gap in the frame traffic to occur before it services requests from a different port)
Configurable Fabric Address Notification (FAN)
Supports up to 239 switches depending on configuration
8 Gb switch fabric aggregate bandwidth: 320 Gbps at full duplex
Maximum frame size: 2148 bytes (2112 byte payload)
Nonblocking architecture to prevent latency
Fabric Latency: Less than 4 ms
Support for Call Home function
Support for Domain Name Service (DNS)
Support for Internet protocol (IP) Version 4 and Version 6
Support for Internet protocol security (IPsec)
Support for separate trap community strings for each trap address
Support for Simple Network Management Protocol (SNMP) Version 3
Support for vital product data (VPD)
Easier SAN maintenance, isolation and troubleshooting with SANdoctor that is a part of base firmware
Optional small form-factor pluggable plus (SFP+) modules
The following software features come with the switch module:

QuickTools Web interface
Fabric Security
The switch supports the following management methods:

Web interface through QuickTools
Command-line interface through SSH (Telnet is also supported but disabled by default)
Switch simple network management protocol (SNMP) agent: enables a network management workstation to receive configuration values, traffic information, and Fibre Channel failure data through SNMP and the Ethernet interface
Supported standards
The switch supports the following Fibre Channel standards:

C-PH version 4.3
FC-PH-2
FC-PH-3
FC-AL version 4.5
FC-AL-2 Rev 7.0
FC-FLA
FC-GS-3
FC-FG
FC-PLDA
FC-Tape
FC-VI
FC-SW-2
Fibre Channel Element MIB RFC 2837
Fibre Alliance MIB version 4.0