How Does Iscsi Optimization Interact With Dcbx; How Does Iscsi Optimization Interact With Dell Compellent Arrays - Dell PowerConnect 8024 User Configuration Manual

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How Does iSCSI Optimization Interact with DCBX?

The Data Center Bridging Exchange (DCBX) component supports the

reception, decoding, and transmission of the Application Priority TLV. The

DCBX component contains a control to allow or disallow the transmission of

the application priority TLV. DCBX transmits an Application Priority TLV

whenever the following conditions are met:

An EqualLogic array has been detected on the port

iSCSI CoS is enabled using a VPT value

PFC is operationally active on the port

The Application Priority TLV will contain the following values (in addition to

any other information contained in the TLV):

AE Selector=14

AE Protocol=3260

AE Priority=priority configured for iSCSI PFC by the iscsi cos vpt

command (default priority is 4)

The existing application priority entries being transmitted, if any, will not be

Dell PowerConnect switches support a macro that may be used to configure a

port connected to a Dell Compellent storage array. The name of the macro is

profile-compellent-nas. The macro takes a single argument: the

interface identifier to which the Dell Compellent array is connected. The

macro disables unicast storm control and sets the spanning tree configuration

on the port to portfast. For an example of how to execute the macro, see

"Configuring iSCSI Optimization Between Servers and a Disk Array" on

Configuring iSCSI Optimization

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