VSC7511 datasheet(91/324 Pages) MICROSEMI

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Functional Descriptions

VMDS-10488 VSC7511 Datasheet Revision 4.2

Fields not applicable to a certain frame type (for example, L3_OPTIONS for an IPv6 frame) must be set

to don’t care for entries the frame type can match.

If L3_FRAGMENT or L3_OPTIONS are set to 1 or set to don’t care, Layer 4 information cannot be

trusted and should be set to don’t-care for such entries.

3.8.2.2

IS1 Action Encoding

The VCAP generates an action vector from each of the three IS1 lookups. All matches return the same

action vector, independently of the match entry type. The action vectors are combined into one action

vector, which is applied to the classification of the frame.

There are no default action vectors for the IS1.

The following table lists the available fields for the IS1 action vector.

L4_RNG

337

Range mask with one bit per range. A bit is set, if the

corresponding range is matched.

Range types: SPORT, DPORT, SPORT or DPORT, VID,

DSCP

Input to range checkers:

SPORT/DPORT: From frame

VID: From frame if tagged, otherwise port’s VID

DSCP: Translated DSCP from the basic classification.

See Range Checkers, page 94.

IP_PAYLOAD_S1_5TUPLE 345

Payload after IPv6 header. For TCP and UDP frames, this

field contains the source and destination port numbers.

Table 45 •

IS1 Action Fields

Action Field

Bit

Width

Description

DSCP_ENA

If set, use DSCP_VAL as classified DSCP value.

Otherwise, DSCP value from basic classification is

used.

DSCP_VAL

See DSCP_ENA.

QOS_ENA

If set, use QOS_VAL as classified QoS class.

Otherwise, QoS class from basic classification is used.

QOS_VAL

See QOS_ENA.

DP_ENA

If set, use DP_VAL as classified drop precedence level.

Otherwise, drop precedence level from basic

classification is used.

DP_VAL

See DP_ENA.

PAG_OVERRIDE_MASK

Bits set in this mask will override PAG_VAL from port

profile.

New PAG =

(PAG (input) AND ~PAG_OVERRIDE_MASK) OR

(PAG_VAL AND PAG_OVERRIDE_MASK)

PAG_VAL

See PAG_OVERRIDE_MASK.

RESERVED

Reserved. Must be set to 0.

Table 44 •

Specific Fields for IS1 Full Key S1_5TUPLE_IP6 (continued)

Field Name

Bit

Width

Description

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