VSC7440 datasheet(169/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

152

IGR_PORT_MASK_SEL

Mode selector for IGR_PORT_MASK.

0: Default setting.

1: Set for frames received from a loopback device,

i.e. LBK_DEV*.

2: Set for masqueraded frames if

ANA_ACL::VCAP_S2_MISC_CTRL.MASQ_IGR_

MASK_ENA == 1.

A masqueraded frame is identified by the following

criteria:

(IFH.FWD.DST_MODE == INJECT &&

IFH.SRC_PORT != physical src port)

(MISC.PIPELINE_ACT == INJ_MASQ)

3: Set for the following frame types:

3a: CPU injected frames and

ANA_ACL::VCAP_S2_MISC_CTRL.CPU_IGR_M

ASK_ENA == 1.

3b: Frames received from VD0 or VD1 and

ANA_ACL::VCAP_S2_MISC_CTRL.VD_IGR_MA

SK_ENA == 1.

3c: Frame received on a loopback device and

ANA_ACL::VCAP_S2_MISC_CTRL.LBK_IGR_M

ASK_SEL3_ENA == 1.

If a frame fulfills multiple of above criteria, then

higher value of IGR_PORT_MASK_SEL takes

precedence.

xxxxx

IGR_PORT_MASK

Ingress port mask.

IGR_PORT_MASK_SEL == 0:

Each bit in the mask correspond to physical

ingress port.

IGR_PORT_MASK_SEL == 1:

Each bit in the mask correspond to the physical

port on which the frame was looped.

IGR_PORT_MASK_SEL == 2:

Each bit in the mask correspond to the

masqueraded port.

If IGR_PORT_MASK_SEL == 3:

Bit 0: Physical src port == CPU0

Bit 1: Physical src port == CPU1

Bit 2: Physical src port == VD0

Bit 3: Physical src port == VD1

Bits 4:9: Src port (possibly masqueraded or

looped)

Bits 44:48: IFH.MISC.PIPELINE_PT

Bits 49:51: IFH.MISC.PIPELINE_ACT

Bits 52: Reserved

xxxxx

L2_MC

Set if frame’s destination MAC address is a

multicast address (bit 40 = 1).

xxxxx

Table 96 •

VCAP IS2 Key Overview (continued)

Field Name

Description

Size

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