VSC7440 datasheet(215/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

198

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Dropping of traffic towards front port due to policer can be identified

(POL_STICKY.POL_STORM_DROP_FWD_STICKY).

•

Policers that are active but not closed can be identified per policer

(POL_STICKY.POL_STORM_ACTIVE_STICKY).

3.23.3

Analyzer Statistics

This section describes how to configure and collect statistics. There are six statistics counter blocks in

the analyzer:

•

Port statistics: Four 40-bit counters available are for each port.

•

Queue statistics: Two 40-bit counters are available for each queue.

•

BUM policer statistics: Six 40-bit counters are available for each BUM policer.

•

ACL policer statistics: Two 40-bit counters are available for each ACL policer.

•

Ingress router leg statistics: Eight IPv4 40-bit counters and eight IPv6 40-bit counters are available

for each ingress router leg.

•

Egress router leg statistics: Eight IPv4 40-bit counters and eight IPv6 40-bit counters are available

for each egress router leg.

Counters can be set up to count frames or bytes based on configurable criteria. This is described in the

following sections.

3.23.3.1 Port Statistics

The following table lists the applicable port statistics registers.

The port statistics block allows counting of a wide variety of frame events. These are represented by a

12-bit event mask:

•

Bits 0–3 represent any stick bit contribution from preceding blocks in ANA.

•

Bits 4–7 represent port policer events.

•

Bits 8–11 represent storm and ACL policer events and loopback frames.

The propagation of the event mask from the preceding blocks in the analyzer to ANA_AC is shown in the

following illustration, except for bits 8–11. See

ANA_AC:STAT_GLOBAL_CFG_PORT:STAT_GLOBAL_EVENT_MASK.GLOBAL_EVENT_MASK.

Table 127 •

Analyzer Port Statistics Register Overview

Target::Register.Field

Description

Replication

ANA_AC:STAT_GLOBAL_CFG_PORT.

STAT_GLOBAL_EVENT_MASK

Configures global event mask per counter.

ANA_AC:STAT_GLOBAL_CFG_PORT:S

TAT_RESET.RESET

Initializes or resets all statistic counters and the sticky bits. 1