VSC7440 datasheet(110/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

DSCP_ENA

If set, use DSCP_VAL as classified DSCP value.

DSCP_VAL

See DSCP_ENA.

COSID_ENA

If set, use COSID_VAL as classified COSID value.

xxxx

COSID_VAL

See COSID_ENA.

xxxx

QOS_ENA

If set, use QOS_VAL as classified QoS class.

xxxx

QOS_VAL

See QOS_ENA.

xxxx

DP_ENA

If set, use DP_VAL as classified drop precedence level.

x xxx

DP_VAL

See DP_ENA.

xxxx

DEI_ENA

If set, use DEI_VAL as classified DEI value.

x x

DEI_VAL

See DEI_ENA.

x x

PCP_ENA

If set, use PCP_VAL as classified PCP value.

x x

PCP_VAL

See PCP_ENA.

x x

MAP_LOOKUP_SEL

Selects which of the two QoS Mapping Table lookups that

MAP_KEY and MAP_IDX are applied to.

0: No changes to the QoS Mapping Table lookup. That is,

MAP_KEY and MAP_IDX are not used.

1: Update key type and index for QoS Mapping Table lookup #0.

2: Update key type and index for QoS Mapping Table lookup #1.

3: Reserved.

MLBS_REDUCED:

Use 8 bits from COSID_ENA (LSB), COSID_VAL, QOS_ENA,

and QOS_VAL (MSB) as MAP_IDX. COSID and QOS class

cannot be assigned at the same time. MAP_KEY is always 3

(TC).

xxxx

MAP_KEY

Key type for QoS mapping table lookup.

0: DEI0, PCP0 (outer tag).

1: DEI1, PCP1 (middle tag).

2: DEI2, PCP2 (inner tag).

3: TC based on conf.mpls_sel_tc_only_ena it is either possible to

always IFH.ENCAP.MPLS_TC or to only use TC it extracted by

label stack.

4: PCP0 (outer tag).

5: Reserved.

6: DSCP if available, otherwise none (64 entries).

7: DSCP if available, otherwise DEI0, PCP0 (outer tag) if

available using MAP_IDX+8, otherwise none (80 entries).

x x

MAP_IDX

Index for QoS mapping table lookup.

Index bits 10:3 into 2K mapping table. Bits 2:0 are always 0.

x x

Table 65 •

VCAP CLM Actions (continued)

Field Name

Description and Encoding

Size

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