packets. Each end of the FCIP communication path is a compatible FCIP device. The switch operates
independently or in a fabric containing multiple extension switches.
Platform capabilities
The SN4000B SAN Extension Switch offers the following features and capabilities:
• Multiple logical FCIP tunnels with a maximum tunnel bandwidth up to 20 Gb/s allows for scalable
connectivity between sites.
• The FCIP trunking feature allows multiple IP source and destination address pairs (defined as FCIP
circuits) providing high bandwidth FCIP tunnel and lossless failover resiliency using multiple 1/10GbE
or 40GbE interfaces. Additionally, each FCIP circuit supports four QoS classes (Class F, High,
Medium, and Low Priority), each as a TCP connection.
• The ARL feature meets minimum bandwidth guarantee for each tunnel while fully utilizing the available
network bandwidth, without any adverse throughput performance during high traffic load.
• Hardware-based compression maximizes throughput over lower bandwidth links in a WAN, thereby
optimizing the cost efficiencies of FCIP. The switch compresses the FC frames before they are
encapsulated into FCIP packets.
• Key protocol features are enabled in the FCIP implementation to optimize performance of extension
over IP networks.
• The hardware-based IPSec supports a mix of secure and nonsecure tunnels on the same Ethernet
port, jumbo frames, and VLAN-tagged connections. The IPSec function of the switch supports both
IPv4 and IPv6.
• FastWrite, Open Systems Tape Pipelining, and Advanced Accelerator for FICON mitigate the latency
effect of a long distance FCIP connection over IP WAN.
• FCIP HCL provides in-service firmware upgrade for supporting business operations 24/7.
• Built-in WAN link tester generates traffic over an IP connection to test for maximum throughput,
congestion, loss percentage, out-of-order delivery, latency, and other network conditions. It helps
determine the health of a WAN link before deploying it for use.
• Fabric Vision advanced monitoring provides the following functions:
◦ Policy-based monitoring monitors FCIP connectivity and WAN anomalies using multilayer metrics.
◦ Flow monitoring reports IOPS and data rate of individual I/O flows of inter-DC replication and tape
backup operations.
◦ Flow generator generates FC frames for a defined flow with default or custom size and pattern and
sends them across FCIP tunnel to help validate end-to-end network setup and configuration.
• Fabric OS delivers distributed intelligence throughout the network, and enables a wide range of value-
added applications.
Platform components
• A total of 24 Fibre Channel ports with link speeds of 2, 4, 8, and 16 Gb/s, compatible with SWL, LWL,
and ELWL SFP+ transceivers
• Rack-mountable 2U chassis
• A total of 16 1GbE/10GbE ports, compatible with copper, ultra short reach, short reach, and long reach
SFP/SFP+ transceivers
• Two 40 GbE ports compatible with short reach and long reach QSFP transceivers
• An RJ-45 Ethernet management port with 10/100/1000 Mb/s autonegotiating capability
• A USB port that provides storage for firmware updates,
supportSave
command output, and storage
for configuration uploads and downloads
• Two redundant, hot-swappable 1100 W AC/DC power supply units with integral fans
• Three port-side exhaust DC fan FRUs
Platform capabilities
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