VSC7440 datasheet(173/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

156

L4_RNG

Range mask. Range types: SPORT, DPORT,

SPORT or DPORT, VID, DSCP, custom.

Input into range checkers is taken from classified

results (VID, DSCP) and frame (SPORT, DPORT,

custom).

SPORT_EQ_DPORT

Set if TCP/UDP source port equals TCP/UDP

destination port.

SEQUENCE_EQ0

Set if TCP sequence number is 0.

L4_FIN

TCP flag FIN.

L4_SYN

TCP flag SYN.

L4_RST

TCP flag RST.

L4_PSH

TCP flag PSH.

L4_ACK

TCP flag ACK.

L4_URG

TCP flag URG.

L3_PAYLOAD

Payload bytes after IP header.

IPv4: IPv4 options are not parsed so payload is

always taken 20 bytes after the start of the IPv4

header.

L4_PAYLOAD

Payload bytes after TCP/UDP header.

Overloading for IP_7TUPLE:

Non TCP/UDP frames (TCP_UDP = 0): Payload

bytes 0 – 7 after IP header. IPv4 options are not

parsed so payload is always taken 20 bytes after

the start of the IPv4 header for non TCP/UDP IPv4

frames.

OAM_CCM_CNTS_EQ0

Flag indicating if dual-ended loss measurement

counters in CCM frames are used.

This flag is set if the TxFCf, RxFCb, and TxFCb

counters are set to all zeros.

OAM_Y1731

Set if frame’s EtherType = 0x8902. If set, ETYPE

is overloaded with OAM MEL flags, See ETYPE.

CUSTOM1

57 bytes payload starting from current frame

pointer position, as controlled by VCAP CLM

actions.

Note that if frame_type==ETH, then payload is

retrieved from a position following the Ethernet

layer, for example, after DMAC, SMAC, 0 – 3

VLAN tags, and EtherType.

456

CUSTOM2

24 bytes payload from frame. Location in frame is

controlled by VCAP CLM actions.

Note that if frame_type==ETH, payload is retrieved

from a position following the Ethernet layer, for

example, after DMAC, SMAC, 0 – 3 VLAN tags

and EtherType.

192

Table 96 •

VCAP IS2 Key Overview (continued)

Field Name

Description

Size

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