VSC7511 datasheet(59/324 Pages) MICROSEMI

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Functional Descriptions

VMDS-10488 VSC7511 Datasheet Revision 4.2

3.6

Statistics

The following table lists the registers for the statistics module.

The device implements a statistics block containing the following counter groups:

•

Receive statistics available per physical ingress port

•

Transmit statistics available per physical egress port

•

FIFO Drop statistics available per physical ingress port

Each counter is 32 bits wide, which is large enough to ensure a wrap-around time longer than 13

seconds for port statistics on a 2.5G port and longer than 30 seconds for port statistics on a 1G port.

Each switch core port has 44 Rx counters, 18 FIFO drop counters, and 31 Tx counters. The following

lists the counters.

3.6.1

Port Statistics

The following table defines the per-port available Rx counters and lists the counter’s address in the

common statistics block.

Table 22 •

Counter Registers

Description

Replication

SYS:STAT:CNT

Data register for reading port counters.

The current view is specified in

SYS::STAT_CFG.STAT_VIEW.

Per counter

for specified

port

SYS::STAT_CFG.STAT_VIEW

Sets the current counter view.

None

SYS::STAT_CFG.STAT_CLEAR_SHOT

Clears counters per counter group.

None

QSYS::STAT_CNT_CFG.TX_GREEN_CNT_MODE

QSYS::STAT_CNT_CFG.TX_YELLOW_CNT_MODE

Controls whether to counts bytes or

frames for Tx priority counters.

None

QSYS::STAT_CNT_CFG.DROP_GREEN_CNT_MODE

QSYS::STAT_CNT_CFG.DROP_YELLOW_CNT_MODE

Controls whether to counts bytes or

frames for drop priority counters.

None

ANA::AGENCTRL.GREEN_COUNT_MODE

ANA::AGENCTRL.YELLOW_COUNT_MODE

ANA::AGENCTRL.RED_COUNT_MODE

Controls whether to counts bytes or

frames for Rx priority counters.

None

Table 23 •

Receive Counters in the Statistics Block

Type

Short Name

Counter

Address Description

c_rx_oct

0x00

Received octets in good and bad frames.

c_rx_uc

0x01

Number of good broadcasts.

c_rx_mc

0x02

Number of good multicasts.

c_rx_bc

0x03

Number of good unicasts.

c_rx_short

0x04

Number of short frames with valid CRC (<64 bytes).

c_rx_frag

0x05

Number of short frames with invalid CRC (<64 bytes).

c_rx_jabber

0x06

Number of long frames with invalid CRC (according to

MAXLEN.MAX_LENGTH).

c_rx_crc

0x07

Number of CRC errors, alignment errors and RX_ER

events.

c_rx_symbol_err

0x08

Number of frames with RX_ER events.

c_rx_sz_64

0x09

Number of 64-byte frames in good and bad frames.

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