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VSC7440 датащи(PDF) 126 Page - Microsemi Corporation

номер детали VSC7440
подробное описание детали  L2/L3 Enterprise Gigabit Ethernet Switch with 10 Gbps Links
PDF  444 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC7440 датащи(HTML) 126 Page - Microsemi Corporation

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Functional Descriptions
VMDS-10492 VSC7440 Datasheet Revision 4.2
109
Figure 24 •
Basic DP Classification Flow Chart
The following illustration shows the flow chart for basic DSCP classification.
DP = DEFAULT_DP_VAL[port]
DSCP = 0
”Frame is IPv4 or IPv6"
DSCP_DP_ENA[port]
DSCP_TRANSLATE_ENA[port]
Y
DSCP = Frame.DSCP
Y
DSCP = DSCP_TRANSLATE_VAL[DSCP]
Y
DSCP_TRUST_ENA[DSCP]
DP = DSCP_DP_VAL[DSCP]
Y
”Frame has inner tag” and
PCP_DEI_DP_ENA[port] and VLAN_TAG_SEL[port]
DP = PCP_DEI_DP_VAL[port][Frame.InnerDEI][Frame.InnerPCP]
Y
”Frame has outer tag” and
PCP_DEI_DP_ENA[port]
DP = PCP_DEI_DP_VAL[port][Frame.OuterDEI][Frame.OuterPCP]
Y
Y
Basic classified DP
(IFH.VSTAX.QOS.CL_DP)
”Frame is BPDU”
(DMAC = 0x0180C200000X)
and ”redirect to CPU”
”Frame is GARP”
(DMAC = 0x0180C200002X)
and ”redirect to CPU”
”Frame is Y.1731/IEEE802.1ag”
(DMAC = 0x0180C200003X)
and ”redirect to CPU”
DP = 0
DP = 0
DP = 0
Y
Y
Y



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