VSC7440 datasheet(170/444 Pages) MICROSEMI

170 / 444 page

Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

153

L2_BC

Set if frame’s destination MAC address is the

broadcast address (FF-FF-FF-FF-FF-FF).

xxxxx

SERVICE_FRM

Set if classified ISDX > 0.

xxxxx

L2_FWD

Set if the frame is allowed to be forwarded to front

ports. L2_FWD can for instance be cleared due to

MSTP filtering or frame acceptance.

xxxxx

VLAN_TAGGED

Set if frame was received with a VLAN tag.

xxxxx

VID

For ISDX = 0 (non-service frames): Classified VID.

ANA_ACL::VCAP_S2_CFG.SEC_ROUTE_HAND

LING_ENA is set, VID is IRLEG VID for first lookup

and ERLEG VID for second lookup for routable

frames (L3_RT=1).

For ISDX > 0 (service frames): By default,

classified ISDX. When

ANA_ACL::VCAP_S2_MISC_CTRL.PAG_FORCE

_VID_ENA is set, bit 7 in the PAG controls whether

VID or ISDX is used:

If PAG[7] = 0: Use classified ISDX.

If PAG[7] = 1: Use classified VID.

xxxxxxxxx

DEI

Classified DEI.

xxxxx

PCP

Classified PCP.

xxxxx

L3_SMAC_SIP_MATCH

Match found in SIP security lookup in ANA_L3.

See IP Source/Destination Guard, page 134.

x x

xxxxxx

L3_DMAC_DIP_MATCH

Match found in DIP security lookup in ANA_L3.

See IP Source/Destination Guard, page 134.

x x

xxxxxx

L3_RT

Set if frame has hit a router leg.

x x

xxxxxx

L2_DMAC

Destination MAC address.

L2_SMAC

Source MAC address.

x x

ETYPE_LEN

Frame type flag indicating that the frame is

EtherType encoded.

Set if frame has EtherType >= 0x600.

Table 96 •

VCAP IS2 Key Overview (continued)

Field Name

Description

Size

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