AR8327-AL1A-R datasheet(96/394 Pages) ETC2

96 / 394 page

96 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

96 • June 2011

COMPANY CONFIDENTIAL

R/W

TCP_XMASSCAN_DROP_EN

1'b1: frame with Seq_Num=0, FIN=1,

URG=1, and PSH=1 should be

dropped

R/O

TCP_SYN1_ACK1_PSH1_DROP_

1'b1: frame with SYN=1 & ACK=1 &

PSH=1 should be dropped.

R/O

TCP_SYN1_PSH1_DROP_EN

1'b1: frame with SYN=1 & PSH=1

should be dropped.

R/O

TCP_SYN1_URG1_DROP_EN

1'b1: frame with SYN=1 & URG=1

should be dropped.

R/O

TCP_SYN_ERR_DROP_EN

1'b1:frame with SYN=1 & ACK=0 &

SP<1024,should be dropped

R/O

TCP_HDR_MIN_DROP_EN

1'b1: if frame with TCP header length

less than TCP_HDR_MIN_SIZE, but

not first of fragment, should be

dropped

R/W

TCP_SAME_PORT_DROP_EN

1'b1: TCP frame with SP equal to DP

should be dropped.

R/W

IPV4_CHECKSUM_DROP_EN

1'b1: frame with ipv4 checksum error

should be dropped.

R/W

IPV4_DIP_ERR_DROP_EN

1'b1: frame should be dropped if with

DIP all zero,or DIP[31:24] is 0x7F.

R/W

IPV4_SIP_ERR_DROP_EN

1'b1: frame should be dropped if with

SIP[31:24] more than 0xE0 and less

than 0xF0, or equal to 0x7F, or SIP[31:0]

is 0x32'hFFFFFFFF.

R/W

IPV4_FRAG_LEN_DROP_EN

1'b1: frame with ipv4 fragment length

check error should be dropped.

R/W

IPV4_FRAG_MAX_DROP_EN

R/W

IPV4_FRAG_MIN_DROP_EN

1'b1: frame with offset length less than

min should be dropped

R/W

IPV4_DF_DROP_EN

1'b1: frame with DF=1 and offset or MF

not zero, should be dropped

R/W

IP_LEN_DROP_EN

1'b1: frame with ip length field error

should be drop? include ipv4 and ipv6

R/W

IPV4_HDR_LEN_CHECK_EN

1'b1 :Check the IP options. If Frame is

with options, drop or send to cpu

R/W

IPV4_HDR_LEN_ DROP_EN

This bit can be used to forward or drop

frame when ipv4 header length check

fail.

R/O

IPV4_HDR_LEN_MIN_DROP_E

1'b0:frame with ipv4 header length

check error should be sent to cpu

port(only to cpu port)

R/W

IP_SAME_PORT_DROP_EN

1'b1: frame with ipv4 header length

check error should be drop

Bit

R/W

Inital

Value

Mnemonic

Description

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