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FOS v7.4 New Feature Descriptions
New Hardware Support
FOS v7.4 adds support for the following new hardware:
Brocade-branded 4GB external USB flash drive
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IP Extension features for Brocade 7840
FOS v7.4 introduces IP Extension support for the Brocade 7840. Users can use this capability to extend IP
storage for replication and disaster recovery in much the same way as Fibre Channel storage while taking
advantage of the compression, encryption, QoS, and trunking features available in the Brocade 7840.
A Brocade 7840 running FOS v7.4 can support both FCIP Extension and IP Extension at the same time. IP
Extension includes the following:
Support for system configuration for IP Extension
•
Support for GbE port configuration for IP Extension
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Tunnel configuration for IP Extension
•
Adaptive Rate Limiting
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TCP/IP Features
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Traffic Control List
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Support System Configuration for IP Extension
FOS v7.4 supports users configuring Brocade 7840 for both FCIP Extension and IP Extension (hybrid mode). By
default, Brocade 7840 supports FCIP Extension only. Changing a Brocade 7840 between FCIP-only and hybrid
mode requires a switch reboot.
Support GE Port Configuration for IP Extension
FOS v7.4 supports users configuring the front end 1/10 GbE ports as LAN ports on a Brocade 7840 for hybrid
mode. These ports are used to connect to IP storage devices on the LAN side. FOS v7.4 supports static Link
Aggregation Group (LAG) configuration so that multiple LAN ports can be assigned to the same LAG group.
Tunnel configuration for IP Extension
FOS v7.4 supports user configuration of IP tunnels on a Brocade 7840 in the same way as FC tunnels are
configured. IP tunnels and FC tunnels are all represented under virtual E-port (VE). Each VE is configured as a
FC-only tunnel or as both FC and IP tunnels. Trunking, QoS, and compression are supported on IP tunnels as
they are for FC tunnels.
Adaptive Rate Limiting (ARL)
FOS v7.4 supports all ARL features available on the FCIP Extension for IP Extension. The static distribution of
unused bandwidth is hierarchical.
TCP/IP Features
FOS v7.4 supports the following TCP/IP features for IP Extension.
LAN side jumbo frames
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IPv4 and IPv6 for LAN side
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Maximum 512 TCP connections per Data Processor (DP)
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Maximum 512 TCP open requests per second per DP
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Maximum 64 UDP flows per DP
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DSCP/VLAN L2CoS marking
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Segment Preservation
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Each LAN TCP window will be 64K by default. If TCP window scaling is requested, the maximum advertised
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window is 256K. The maximum window per connection is 2M irrespective of the advertised window.
Fabric OS 7.4.1a Release Notes v3.0
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