VFTHeader

VFTHeader-sets up VFT Header over Fibre Channel.

SYNOPSIS

VFTHeader sub-command options

DESCRIPTION

The Virtual Fabric Tagging Header (VFT Header) allows Fibre Channel frames to be tagged with the Virtual Fabric Identifier (VF_ID) of the Virtual Fabric to which they belong. Tagged frames, that is frames with a VFT_Header, belonging to different Virtual Fabrics may be transmitted over the same physical link.

STANDARD OPTIONS
type

Specifies the kind of tagged frame. To use with Fibre Channel, type is set to 0. The use of other values is beyond the scope of this standard. No device sends a VFT tagged frame with a Type value in the VFT_Header other than 0h. A device receiving a VFT tagged frame with a Type value in the VFT_Header having a non-zero value discards the frame.

version

Specifies the version of the VFT Header. The default is 0.

routingControl

The R_CTL field is a one-byte field that contains routing bits and information bits to categorize the frame function.

The R_CTL is set to the value 50h to identify the VFT Extended Header.

hopCt

The count by which the VFT header packet is forwarded in the stream.

If the Hop Count Valid (HCV) bit is set to one, the Hop Count (Hop_Cnt) field specifies the number of hops remaining before the frame is discarded.

priority

Specifies the Quality of Service (QoS) value for the frame.

When set to zero, is interpreted to contain management information for the class of service.

virtualFabricId

The ID of the VFT header. It specifies the Virtual Fabric Identifier of the Virtual Fabric to which the tagged frame belongs.

COMMANDS

The VFTHeader command is invoked with the following sub-commands. If no sub-command is specified, returns a list of all sub-commands available.

VFTHeader setDefault

Returns the default settings.

EXAMPLES

See under fibreChannel

SEE ALSO

fibreChannel