VSC7440 datasheet(31/444 Pages) MICROSEMI

부품명	VSC7440

상세설명	L2/L3 Enterprise Gigabit Ethernet Switch with 10 Gbps Links

PDF	444 Pages

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제조업체	MICROSEMI [Microsemi Corporation]

홈페이지	http://www.microsemi.com

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

Frames are injected without prefix from internal CPU or directly attached CPU.

Frames can be injected with a prefix to accommodate CPU injection from a front port (that may be

directly attached), controlled by ASM:CFG:PORT_CFG.INJ_FORMAT_CFG.

The internal frame header and optional prefix is removed before transmitting the frame on a port. It is

only visible to the user when injecting and extracting frames to or from the switch core and optionally

when sending/receiving frames using the NPI port.

It is possible to configure a port to transmit frames with internal frame headers using

REW:COMMON:PORT_CTRL.KEEP_IFH_SEL. It is also possible to only transmit CPU redirected

frames with Internal frame headers using REW:COMMON:GCPU_CFG.GCPU_KEEP_IFH.

3.3.2

Internal Frame Header Layout

The internal frame header is 28 bytes long. The following illustration shows the layout.

VSC7440 데이터시트(PDF) 31 Page - Microsemi Corporation