Optimized Fcoe Traffic Flow; Storage Management Initiative Specification (Smi-S) - Lenovo Flex System Fabric CN4093 Application Manual

Optimized FCoE Traffic Flow

Storage Management Initiative Specification (SMI-S)

© Copyright Lenovo 2015
 E_ports can be configured only on Lenovo Flex System Fabric CN4093 10Gb
Converged Scalable Switch and Lenovo RackSwitch G8264CS. E_ports cannot
interoperate with the switches from other vendors.
 A maximum of eight switches are supported in a Fibre Channel fabric.
A maximum of four E_ports can be configured on a switch.

To optimize FCoE traffic flow between FCoE enodes, optimized‐forwarding
feature installs appropriate ACL entries for logged‐in nodes. Usually, any FC/FCoE
traffic in full fabric mode should go through FC module for Zone check. We can
achieve low latency if the Zone check is done on Ethernet switch module for
FCoE‐FCoE traffic. Optimized feature is enabled by default in Full fabric mode,
and is not applicable to NPV mode.
Note: FCoE-FC and FC-FC traffic is not optimized.
If needed, the administrator can disable optimized‐forwarding feature. Prior to
that, disable FIP snooping. Use the following commands:
CN4093(config)# no fcoe fips enable
CN4093(config)# no fcoe optimized­forwarding enable
To re‐enable optimized‐forwarding feature, use the following command sequence:
CN4093(config)# no fcoe fips enable
CN4093(config)# fcoe optimized­forwarding enable
CN4093(config)# fcoe fips enable
To view optimized traffic flow information, use the following commands:
CN4093(config)# show fcoe optimized­forwarding status (Show current state
of feature)
CN4093(config)# show fcoe optimized­acls vlan <vlan ID> (Show list of
optimized ACLs)
Lenovo N/OS provides a programming interface using the SMI‐S to ease
interoperability in a multivendor SAN environment. In this release, only limited
support is provided. The CN4093 switch must be operating in full fabric mode.
An embedded SMI‐S agent runs on the CN4093 and includes standard profiles as
specified in the SMI‐S. These profiles include:
 Fabric Profile
 Indication Profile
Server Profile

 Switch Profile
Configuration capabilities of switch, fabric, or ports is not supported. Zoning
control can be implemented and includes the following functions:
Session control (start, commit, and rollback)

Chapter 19: Fibre Channel
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